This is the best damn Quadrajet video I have ever seen. I have watched at least 50 videos and this one is the best by far. The best part is that he doesn't insert any stupid music in his video.😎👍
@user-dv8mc5cc7pАй бұрын
Thank you Jay hawker! I am getting ready to tackle my belly acquired Rochester 4me.Your detailed video has given me the confidence I need To go for it. God Bless you too Pete
@edwardmartin30692 жыл бұрын
Just about everything is easier to adjust/tune than a Quadrajet carburetor...BUT, once properly adjusted, Quadrajets provide more power more efficiently than just about any other carburetor around. The carb has adjustments for every phase of engine operations...and...they almost always need some tweaking to get right. Pay no attention to those nay-sayers out there who claim to be Q-jet specialists. Most of them just hate to have anyone de-mystify the art of Quadrajet mastery that they claim to have... I guess they are afraid of being slightly less special... You did a fantastic job of encouraging the common backyard car guy to not be afraid of tackling even the most daunting of chores to take care of their cars....
@TheJayhawker
2 жыл бұрын
Thanks a lot! I appreciate the kind words.
@rooster68able
Ай бұрын
Saw a guy put a brand new quick fuel 750 on pontiac 400ci dyno 360 hp with carb put back the old quaddrajet same exact power!!! I was surprised same graph lines on dyno down to 1 hp and everything
@RT4Him2 жыл бұрын
Enjoyed this very much . Always been so nervous about taking a 4 barrel apart. I like the steps you take from disassembly through rebuild.
@dantheman19982 жыл бұрын
I always had a thing for quadrajets. It's one of the few carbs that are for fuel economy, driveability, and performance. Yeah there are carbs that do each individualy better but this carb had it all
@briansd2772
Жыл бұрын
Well said.
@Cranedewd2 жыл бұрын
Seeing you look for your carb hammer reminded me of a time my dad and I were characters for a Hollywood Squares type game show at a Boy Scout camp. We were the O’lean brothers. He was Gas and I was Valve. Anyway, we dressed in bib overalls and I had a Quadrajet in one hand and a two pound sledge hammer in the other. Of course the hammer was to adjust the Qudrajet! We taught the auto mechanics merit badge at a winter camp outside Houston and had a blast. This was in the early 90’s and I just lost my dad at the beginning of May. Great memories! Thanks for the video!!
@TheJayhawker
2 жыл бұрын
Thanks for the comment, sounds like my kind of guys!
@4xfava4 ай бұрын
Thank you, I overhauled mine today using your video for instruction.
@spyguy7007 Жыл бұрын
a real carb man , going the extra mile. super job !
@-ZIO5 ай бұрын
Rochester Quadrajet. As in Rochester New York, home of the Quadrajet carburetor. Your Welcome :)
@Texassince18362 жыл бұрын
Thats an M4MED specifically. The tan solenoid isn't mixture feedback. When the engine warms up a temperature switch triggers that solenoid which opens a valve allowing some of the accelerator pump shot to leak back into the bowl. The "D" on the end of the model type is for "Dual capacity accelerator pump. Ive got the same one on my '86 and have rebuilt it a couple times in the last dozen years.
@alexheppner9142
Жыл бұрын
I was going to say the same thing about the dual capacity accelerator pump. If left unplugged it functions like a regular one.
@jimclarke11088 ай бұрын
Excellent work bud✌
@briancarsen6315 Жыл бұрын
Anybody that calls a quadrajet carburetor junk is a fool! Best carb for economy while having decent performance and not having to rebuild it every year. I run q jets on all my chevy engines. They are a bit more demanding to rebuild but worth it. On your carb, you have a little electric connector on it that your pickup probly could plug into the factory harness to meet emissions. This works only when you have the computer hooked up. And it takes info from the HEI and I'm sure yours has extra connectors. That sets the electronic spark control up. Btw...I love your engine color! John 3:16
@joanfrellburg49015 ай бұрын
For the idle mixture screws I take them out and put them in a vise between two blocks of wood, then with a hacksaw cut a slot in the middle so you can use a screwdriver OR braze a piece of steel tubing on them so you can adjust them with no tools required.
@johnwallace5593 Жыл бұрын
Best video ever thank you sir
@DesertRatFabrication2 жыл бұрын
Great video, thanks for sharing. God bless
@kevinpfaff23012 жыл бұрын
Great video! Thank you Mr jayhawker
@jamesduffus44552 жыл бұрын
thats a cold start injector i have the same carb in my parts pile fuel mixture control solenoid replaces needles great vid
@Texassince18362 жыл бұрын
The "green painted parts" are actually Teflon coated for decreased friction.
@Spiritof_76
6 ай бұрын
Teflon? Not epoxy?
@pq50052 жыл бұрын
I just picked up the same one at the junk yard today.
@callmenortnortin4672 жыл бұрын
Quite the detailed rebuild. Lots of less detailed Q Jet rebuilds around .
@glennpham27637 ай бұрын
When tuned correctly, Quadra Jets are quite effective.
@ingles-pasoporpaso86976 ай бұрын
Lovvvveee thissss videooooo!!!!!
@octaviofuentes7781 Жыл бұрын
I miss the part when he put the 3 fallen tubes back on the air horn other than that everything looked good( q jets are good carbs but a lot of people are afraid of them)
@shortthings8160
Жыл бұрын
Why afraid?
@callmenortnortin4672 жыл бұрын
Chuck it on an engine and lets hear that sweet QJet moan, lol
@rooster68ableАй бұрын
Forgot how many parts were in them they make a holley look like a mousetrap
@TopGunMan Жыл бұрын
At 47:17, the power piston assembly should not need to be held down, there is a plastic interference fit bushing that holds it in place.
@320iguy5 ай бұрын
I'm rebuilding a Rochester carb, from an 88 Camaro, and it has a little tab on the upper plate that operates a little valve. It's next to the little valve operated by the throttle rod, I can't find ANY info on it and it doesn't seem to fit the typical gasket set. Also, my needle set has a little plate that operates it rather then spring set. It's like a spring then a little plate sits on it, and that is how it operates. My question is, does this invalidate my gasket set, and should I look for the correct one? Great video, very informative and precise. Cheers!
@georgegeorgoudis2749 Жыл бұрын
Hello Sir, God Bless and greetings from Australia. Fantastic video as always. Can I ask, what method did you use to secure the tubes in the airhorn that had fallen off. Was it Loctite, JB weld or some other method. Warmest regards, George (Bonneville 1960).
@briancarsen6315
Жыл бұрын
I am curious as well on those tubes. No wonder if didn't run worth a darn... Great video with the play by play.
@terrellscaife2411Ай бұрын
So what vehicles did they put this carburetor on?
@jtp682 Жыл бұрын
very good video! I need some advice on something. I recently bought an 1986 chevy truck with a V6 4.3. It has a propane system on it and the original carburetor is no where to be found. I have a 78 quadrajet that I just rebuilt and would like to install it. the truck intake manifold is the original spreadbore quadrajet carburetor. Also this engine has the electronic spark control distributor without the vaccum advance. if I put this 78 carb I got on it do you think it will work just fine?
@curtiswells8129 Жыл бұрын
Did you do the cad plating?
@TheJayhawker
Жыл бұрын
kzread.info/dash/bejne/naSDyriSobO3gMY.html
@terrellscaife2411Ай бұрын
Are you familiar with the carburetor on a 1986 Chevy Cavalier 2 L?
@hkpoweralajmi5170 Жыл бұрын
Hi do you have rebuild electric one for my 1984 impala
@gregorydzieciol2662 Жыл бұрын
Question,in there a difference between any of the sbc timing covers ?which one requires the larger front oil pan seal from the felpro oil pan gasket set
@Texassince1836
7 ай бұрын
The difference is the pan, not the cover
@jaedyn1215018 ай бұрын
Do you rebuild carbs on the side? I have a 80s carb that needs a rebuild if your intrested
@jtp682 Жыл бұрын
this is a very good video! I need some advice on something. I recently bought an 1986 chevy truck with a V6 4.3. It has a propane system on it and the original carburetor is no where to be found. I have a 78 quadrajet that I just rebuilt and would like to install it. the truck intake manifold is the original spreadbore quadrajet carburetor. Also this engine has the electronic spark control distributor without the vaccum advance. if I put this 78 carb I got on it do you think it will work just fine?
@joshbohner1712
Жыл бұрын
You can delete that spark control system and throw a hei distributor in it with a vacuum advance then you would be good to go with less electronic crap getting in your way
@ilimikadventures52589 ай бұрын
Do you have a guide how to remove carberator from the intake?
@callmenortnortin4672 жыл бұрын
Why would you mess with that brittle accelerator pump seal right directly over an open carb you just put time into to keep it clean?
@TheJayhawker
2 жыл бұрын
Just being human. Thanks for watching.
@felipeidarias2963
Жыл бұрын
Hi, great learning a lot you make it easy to do thanks.
@jtp682 Жыл бұрын
hi there. found this video very helpful.. I was wondering if you can help me figure something out. I bought an 86 GMC V6 to restore but the carburetor was missing. It has the stock spreadbore quadrajet intake manifold. I have a quardrajet off of an 86 chevy 350 and I am wondering if this carburetor will work since it came off of a V8 and not a V6.. Somebody told me this carburetor would be "too much fuel flow", but I dont buy it. Can I use this carburetor on the stock 4.3 L V6? It seems to bolt right on..
@TheJayhawker
Жыл бұрын
You may be on the verge of too much but why not try it? I honestly can't tell you what CFM they put on the 4.3's. Otherwise it would be easy enough to get a smaller Edelbrock or Carter and an adapter plate.
@jtp682
Жыл бұрын
@@TheJayhawker thank you!
@jimmypickle65579 ай бұрын
how much would you charge me if i wanted you to rebuild my q jet?
@ThickGrizzlyPanda Жыл бұрын
Can I run that same model Chevy without the sensors on the carburetor?
@Texassince1836
7 ай бұрын
Tan(grey) solenoid yes. Blue solenoid no, not reccomended
@jamesroberts18002 жыл бұрын
I honestly don't think he used the correct nomenclature for a single part. He only sealed the main well plugs, what about the other 3 ? I won't mention that he should have capped off the idle vacuum air bleed holes (we used double ought buck shot hammered in to do that) in the base plate so the idle mixture screws actually work correctly. Screw where the index is on the choke, what was the tension ? and how many degrees did the vacuum pull off crack it open ? Carbs are best left to the pros and I worked for the "Carb shop" in SoCal way too many years to ever take this video serious. Did he even know that the primary power valve adjustment screw sets the main jet mixture at both cruise and accel ? Certainly seems like a big no from here.....other wise he'd know to never move that screw unless something is very, very, very, wrong.
@TheJayhawker
2 жыл бұрын
It must be very difficult to be an expert at something and watch an ordinary guy do something not many people do anymore, huh. But let me reply to a few of your statements. If you have never made a public video you may not know that showing every single minute detail looses interest fast. As it was the video was already almost an hour long. Which was why I simply explained to follow instructions on making final adjustments. Also not talking down to people, but instead using language that they themselves can understand makes them feel included. Indeed I did seal all of the plugs, but only showed the main wells. Like I said I sealed everything... As for the pv adj. screw, it was out 3 1/2 turns, it goes back in to 3 1/2 turns....maybe I'm missing something... This carb had very old dried out gas in it everywhere and I wanted everything cleaned out within reason. It seems to me you're very anxious to share your knowledge but you don't share it well. Instead it comes out in the form of degrading put-downs. Perhaps there is a much more constructive way of sharing that knowledge and passing it on to the next generation instead of just trying to be insulting. Maybe you could begin by making your own videos. But instead, if you would like to share some of your knowledge with me, great, I love to learn from guys with experience. I'm learning all the time, I normally don't do mid-80's stuff. It's not where my main interest lies, but rather cars that are much, much older. But I'm willing to learn and to do it. So how about a little mutual respect man? Thanks for watching and God Bless.
@kenswitzer4133
2 жыл бұрын
I am not a pro but have seen rebuilding these for over 30 year and yes he is clueless.
@M4MED86
2 жыл бұрын
@@TheJayhawker I have an M4MED on my truck and know I couldn't rebuild one. And because of that,I don't think it's right for me to criticize anyone who does....or even attempts it!Watching you rebuild this thing was very impressive. By the time you took everything apart,there were more parts layin around than a chop shop,but you seemed to put everything back together w no issues. I'm guessin you tinkered w em in the past.😂 Keep up the great work and thank you!👍🏻
@trailermonkey8687
Жыл бұрын
@@TheJayhawker Well said Mr. Jayhawker. I would be very interested in learning why we should "capped off the idle vacuum air bleed holes" and if that is something you perform?
@ToddASmith-il3zt Жыл бұрын
I am not sure I can do this.. need a better work bench
@luisgarcia120410 Жыл бұрын
Can you rebuild mine 😅😭😭😭
@Bill-xc8le2 жыл бұрын
Holley's are so much easier to rebuild and tune.
@TheJayhawker
2 жыл бұрын
I certainly agree, about any other carb. is easier. But in my opinion few are actually better.
@Bill-xc8le
2 жыл бұрын
@@TheJayhawker I’ve seen a guy at the drag strip run low 11’s with a Quadrajet
@emerybryant Жыл бұрын
what would you charge to do 2 lol
@emerybryant
Жыл бұрын
😳 holy shit you made it factory fresh. I dont need that. Just a basic tear down and clean up. 😅
Пікірлер: 69
This is the best damn Quadrajet video I have ever seen. I have watched at least 50 videos and this one is the best by far. The best part is that he doesn't insert any stupid music in his video.😎👍
Thank you Jay hawker! I am getting ready to tackle my belly acquired Rochester 4me.Your detailed video has given me the confidence I need To go for it. God Bless you too Pete
Just about everything is easier to adjust/tune than a Quadrajet carburetor...BUT, once properly adjusted, Quadrajets provide more power more efficiently than just about any other carburetor around. The carb has adjustments for every phase of engine operations...and...they almost always need some tweaking to get right. Pay no attention to those nay-sayers out there who claim to be Q-jet specialists. Most of them just hate to have anyone de-mystify the art of Quadrajet mastery that they claim to have... I guess they are afraid of being slightly less special... You did a fantastic job of encouraging the common backyard car guy to not be afraid of tackling even the most daunting of chores to take care of their cars....
@TheJayhawker
2 жыл бұрын
Thanks a lot! I appreciate the kind words.
@rooster68able
Ай бұрын
Saw a guy put a brand new quick fuel 750 on pontiac 400ci dyno 360 hp with carb put back the old quaddrajet same exact power!!! I was surprised same graph lines on dyno down to 1 hp and everything
Enjoyed this very much . Always been so nervous about taking a 4 barrel apart. I like the steps you take from disassembly through rebuild.
I always had a thing for quadrajets. It's one of the few carbs that are for fuel economy, driveability, and performance. Yeah there are carbs that do each individualy better but this carb had it all
@briansd2772
Жыл бұрын
Well said.
Seeing you look for your carb hammer reminded me of a time my dad and I were characters for a Hollywood Squares type game show at a Boy Scout camp. We were the O’lean brothers. He was Gas and I was Valve. Anyway, we dressed in bib overalls and I had a Quadrajet in one hand and a two pound sledge hammer in the other. Of course the hammer was to adjust the Qudrajet! We taught the auto mechanics merit badge at a winter camp outside Houston and had a blast. This was in the early 90’s and I just lost my dad at the beginning of May. Great memories! Thanks for the video!!
@TheJayhawker
2 жыл бұрын
Thanks for the comment, sounds like my kind of guys!
Thank you, I overhauled mine today using your video for instruction.
a real carb man , going the extra mile. super job !
Rochester Quadrajet. As in Rochester New York, home of the Quadrajet carburetor. Your Welcome :)
Thats an M4MED specifically. The tan solenoid isn't mixture feedback. When the engine warms up a temperature switch triggers that solenoid which opens a valve allowing some of the accelerator pump shot to leak back into the bowl. The "D" on the end of the model type is for "Dual capacity accelerator pump. Ive got the same one on my '86 and have rebuilt it a couple times in the last dozen years.
@alexheppner9142
Жыл бұрын
I was going to say the same thing about the dual capacity accelerator pump. If left unplugged it functions like a regular one.
Excellent work bud✌
Anybody that calls a quadrajet carburetor junk is a fool! Best carb for economy while having decent performance and not having to rebuild it every year. I run q jets on all my chevy engines. They are a bit more demanding to rebuild but worth it. On your carb, you have a little electric connector on it that your pickup probly could plug into the factory harness to meet emissions. This works only when you have the computer hooked up. And it takes info from the HEI and I'm sure yours has extra connectors. That sets the electronic spark control up. Btw...I love your engine color! John 3:16
For the idle mixture screws I take them out and put them in a vise between two blocks of wood, then with a hacksaw cut a slot in the middle so you can use a screwdriver OR braze a piece of steel tubing on them so you can adjust them with no tools required.
Best video ever thank you sir
Great video, thanks for sharing. God bless
Great video! Thank you Mr jayhawker
thats a cold start injector i have the same carb in my parts pile fuel mixture control solenoid replaces needles great vid
The "green painted parts" are actually Teflon coated for decreased friction.
@Spiritof_76
6 ай бұрын
Teflon? Not epoxy?
I just picked up the same one at the junk yard today.
Quite the detailed rebuild. Lots of less detailed Q Jet rebuilds around .
When tuned correctly, Quadra Jets are quite effective.
Lovvvveee thissss videooooo!!!!!
I miss the part when he put the 3 fallen tubes back on the air horn other than that everything looked good( q jets are good carbs but a lot of people are afraid of them)
@shortthings8160
Жыл бұрын
Why afraid?
Chuck it on an engine and lets hear that sweet QJet moan, lol
Forgot how many parts were in them they make a holley look like a mousetrap
At 47:17, the power piston assembly should not need to be held down, there is a plastic interference fit bushing that holds it in place.
I'm rebuilding a Rochester carb, from an 88 Camaro, and it has a little tab on the upper plate that operates a little valve. It's next to the little valve operated by the throttle rod, I can't find ANY info on it and it doesn't seem to fit the typical gasket set. Also, my needle set has a little plate that operates it rather then spring set. It's like a spring then a little plate sits on it, and that is how it operates. My question is, does this invalidate my gasket set, and should I look for the correct one? Great video, very informative and precise. Cheers!
Hello Sir, God Bless and greetings from Australia. Fantastic video as always. Can I ask, what method did you use to secure the tubes in the airhorn that had fallen off. Was it Loctite, JB weld or some other method. Warmest regards, George (Bonneville 1960).
@briancarsen6315
Жыл бұрын
I am curious as well on those tubes. No wonder if didn't run worth a darn... Great video with the play by play.
So what vehicles did they put this carburetor on?
very good video! I need some advice on something. I recently bought an 1986 chevy truck with a V6 4.3. It has a propane system on it and the original carburetor is no where to be found. I have a 78 quadrajet that I just rebuilt and would like to install it. the truck intake manifold is the original spreadbore quadrajet carburetor. Also this engine has the electronic spark control distributor without the vaccum advance. if I put this 78 carb I got on it do you think it will work just fine?
Did you do the cad plating?
@TheJayhawker
Жыл бұрын
kzread.info/dash/bejne/naSDyriSobO3gMY.html
Are you familiar with the carburetor on a 1986 Chevy Cavalier 2 L?
Hi do you have rebuild electric one for my 1984 impala
Question,in there a difference between any of the sbc timing covers ?which one requires the larger front oil pan seal from the felpro oil pan gasket set
@Texassince1836
7 ай бұрын
The difference is the pan, not the cover
Do you rebuild carbs on the side? I have a 80s carb that needs a rebuild if your intrested
this is a very good video! I need some advice on something. I recently bought an 1986 chevy truck with a V6 4.3. It has a propane system on it and the original carburetor is no where to be found. I have a 78 quadrajet that I just rebuilt and would like to install it. the truck intake manifold is the original spreadbore quadrajet carburetor. Also this engine has the electronic spark control distributor without the vaccum advance. if I put this 78 carb I got on it do you think it will work just fine?
@joshbohner1712
Жыл бұрын
You can delete that spark control system and throw a hei distributor in it with a vacuum advance then you would be good to go with less electronic crap getting in your way
Do you have a guide how to remove carberator from the intake?
Why would you mess with that brittle accelerator pump seal right directly over an open carb you just put time into to keep it clean?
@TheJayhawker
2 жыл бұрын
Just being human. Thanks for watching.
@felipeidarias2963
Жыл бұрын
Hi, great learning a lot you make it easy to do thanks.
hi there. found this video very helpful.. I was wondering if you can help me figure something out. I bought an 86 GMC V6 to restore but the carburetor was missing. It has the stock spreadbore quadrajet intake manifold. I have a quardrajet off of an 86 chevy 350 and I am wondering if this carburetor will work since it came off of a V8 and not a V6.. Somebody told me this carburetor would be "too much fuel flow", but I dont buy it. Can I use this carburetor on the stock 4.3 L V6? It seems to bolt right on..
@TheJayhawker
Жыл бұрын
You may be on the verge of too much but why not try it? I honestly can't tell you what CFM they put on the 4.3's. Otherwise it would be easy enough to get a smaller Edelbrock or Carter and an adapter plate.
@jtp682
Жыл бұрын
@@TheJayhawker thank you!
how much would you charge me if i wanted you to rebuild my q jet?
Can I run that same model Chevy without the sensors on the carburetor?
@Texassince1836
7 ай бұрын
Tan(grey) solenoid yes. Blue solenoid no, not reccomended
I honestly don't think he used the correct nomenclature for a single part. He only sealed the main well plugs, what about the other 3 ? I won't mention that he should have capped off the idle vacuum air bleed holes (we used double ought buck shot hammered in to do that) in the base plate so the idle mixture screws actually work correctly. Screw where the index is on the choke, what was the tension ? and how many degrees did the vacuum pull off crack it open ? Carbs are best left to the pros and I worked for the "Carb shop" in SoCal way too many years to ever take this video serious. Did he even know that the primary power valve adjustment screw sets the main jet mixture at both cruise and accel ? Certainly seems like a big no from here.....other wise he'd know to never move that screw unless something is very, very, very, wrong.
@TheJayhawker
2 жыл бұрын
It must be very difficult to be an expert at something and watch an ordinary guy do something not many people do anymore, huh. But let me reply to a few of your statements. If you have never made a public video you may not know that showing every single minute detail looses interest fast. As it was the video was already almost an hour long. Which was why I simply explained to follow instructions on making final adjustments. Also not talking down to people, but instead using language that they themselves can understand makes them feel included. Indeed I did seal all of the plugs, but only showed the main wells. Like I said I sealed everything... As for the pv adj. screw, it was out 3 1/2 turns, it goes back in to 3 1/2 turns....maybe I'm missing something... This carb had very old dried out gas in it everywhere and I wanted everything cleaned out within reason. It seems to me you're very anxious to share your knowledge but you don't share it well. Instead it comes out in the form of degrading put-downs. Perhaps there is a much more constructive way of sharing that knowledge and passing it on to the next generation instead of just trying to be insulting. Maybe you could begin by making your own videos. But instead, if you would like to share some of your knowledge with me, great, I love to learn from guys with experience. I'm learning all the time, I normally don't do mid-80's stuff. It's not where my main interest lies, but rather cars that are much, much older. But I'm willing to learn and to do it. So how about a little mutual respect man? Thanks for watching and God Bless.
@kenswitzer4133
2 жыл бұрын
I am not a pro but have seen rebuilding these for over 30 year and yes he is clueless.
@M4MED86
2 жыл бұрын
@@TheJayhawker I have an M4MED on my truck and know I couldn't rebuild one. And because of that,I don't think it's right for me to criticize anyone who does....or even attempts it!Watching you rebuild this thing was very impressive. By the time you took everything apart,there were more parts layin around than a chop shop,but you seemed to put everything back together w no issues. I'm guessin you tinkered w em in the past.😂 Keep up the great work and thank you!👍🏻
@trailermonkey8687
Жыл бұрын
@@TheJayhawker Well said Mr. Jayhawker. I would be very interested in learning why we should "capped off the idle vacuum air bleed holes" and if that is something you perform?
I am not sure I can do this.. need a better work bench
Can you rebuild mine 😅😭😭😭
Holley's are so much easier to rebuild and tune.
@TheJayhawker
2 жыл бұрын
I certainly agree, about any other carb. is easier. But in my opinion few are actually better.
@Bill-xc8le
2 жыл бұрын
@@TheJayhawker I’ve seen a guy at the drag strip run low 11’s with a Quadrajet
what would you charge to do 2 lol
@emerybryant
Жыл бұрын
😳 holy shit you made it factory fresh. I dont need that. Just a basic tear down and clean up. 😅