Did you recover the screw with a replacement plug when you were done or did you leave it open?
@gummitarzan8545 Жыл бұрын
idle jet, idle screw...
@TheSteveniell Жыл бұрын
I have a 81 XJ650 too but don’t know if same Seca. In the middle of wiring and tuning carbs. Hope we can learn together. Be safe!
@neilyakuza65952 жыл бұрын
Isn't that set at factory?
@tinkerbgrace96582 жыл бұрын
I just got one for $100 but it needs the carb rebuilt and some other small things. What do you guys think.
@shannonwittman9503 жыл бұрын
I see about one year has passed since you posted this video of your Seca 650 project bike. Would be good to see what progress you've made with refurbishing. Or maybe it became insurmountable and you decided to unload it instead? From what I see via my computer monitor screen, I'd say you have (had) a decent first-time "platform" worthy of bringing back to prime. This particular bike has most of what you might wish for in a long-time city/freeway road runner. No doubt the parts (such as side covers) are still readily available, new and used. The engine sounds solid though that's not a big surprise. I trust the oil level was good for your first starts/runs. The Japanese engineered their air-cooled threes and fours to high levels of reliability. A suggestion: you might consider cutting down the extended segments such as shaking dog food from the exhaust. Good luck and thanks for a good video!
@codyrace45953 жыл бұрын
great job
@paulbull37653 жыл бұрын
Great video ladies, very informative thank you 👍🏻🇦🇺
@paulbull37653 жыл бұрын
Very cool, I am about to start a Cafe racer project using a 1980 XJ650 ...... enjoyed your video, thanks for sharing 🇦🇺👍🏻
@derkstruckauto83703 жыл бұрын
Thank u for the help
@normantoro39793 жыл бұрын
Had a Seca 550 in college, and currently looking to buy one that I saw on Craigslist. They are great bikes, Good luck. I also have a engineer University age daughter, that is a licensed motorcycle rider. She is ride Honda CM200T, Ducati Monster 750 Dark, and GS500e (which we rebuilt together) Good luck and safe riding for you both.
@IzzyMcGoth20493 жыл бұрын
This was an amazing video just to let you know.
@lilandmadsmoto62353 жыл бұрын
Thanks!
@jeremyubrien29553 жыл бұрын
Good on you for having a crack at a bike rebuild. May I suggest checking out Mezzmo Engineering’s channel. Great reference for working on XJs. Cheers
@jhayregz4 жыл бұрын
Awesome stuff gals. I have an 82 Seca and i want to remove my headers to wrap them soon. You should as well since its off. What size did you need to remove the header bolts and for the 2 underneath? Thanks! Will subscribe. The dog food made me laugh.
@jackiehache72444 жыл бұрын
Love this channel! Keep it up
@lilandmadsmoto62354 жыл бұрын
Thanks, Jackie!
@garyconstant42344 жыл бұрын
Do you know how to set them. Someone in the past has been messing with them and now I need to get them balanced again
@lilandmadsmoto62354 жыл бұрын
When I set the screws, I screwed them all the way in and then backed them out 3 full turns. (360 degrees x 3) This seemed to work well. However, this was after I had fully restored the carbs. I knew the float settings were identical, the butterfly values were set identically, and everything was dialed in - these carbs were better than new. If you are starting with the carbs on the bike and they are in unknown condition, a color tune as Mr. Thomas points out in this thread, might be the best way to go. I've never done it myself, but it seems legit. Post back and let us know how it goes. Good luck!
@lilandmadsmoto62354 жыл бұрын
Also, a carb sync gauge will help, too.
@garyconstant42344 жыл бұрын
Lil and Mads Moto ok and thanks for getting back to me. I’ll definitely let you know how I get on. Thanks again
@SinisterSoundsEntertainment4 жыл бұрын
Can start by screwing them al the way in, then backing out 3 full turns, then making fine adjustments after... But a colortune kit takes all the guesswork out of it
@bengearhart46134 жыл бұрын
thanks so much just bought an xj650, cleaned the carbs and is still running like shit. Just assumed that you couldn't adjust these carbs I never would've found the location of these adjustment screws.
@lilandmadsmoto62354 жыл бұрын
I'm glad you found it useful! I'm a hobbyist, and I'm learning so much along the way. I did a full restoration on my carbs, with a bench sync and float bowl test. If you get stuck on something, I can try to help.
@bengearhart46134 жыл бұрын
@@lilandmadsmoto6235 Just patched up some vacuum leeks on my 650 with new gaskets. Have all my needles at 3 turns out now. Wondering if theres a more accurate way to sync the carbs without a gauge (too poor to get one) or if tuning all carbs to the same setting is enough
@lilandmadsmoto62354 жыл бұрын
@@bengearhart4613 Without a carb sync, you can opt for a 'bench sync' at zero cost for tools. Matt has a good video on how to do this. kzread.info/dash/bejne/oYqgrsutqqmZaKw.html
@Garyscott73 жыл бұрын
@@bengearhart4613 You will never get it right without taking actual readings on the bike. Old dogs can get close by sound, but if you are new to syncing 4 carbs you will just frustrate yourself into circles and end up with a rough running bike waaay out of tune. You can start with a pair of $16.00 vacuum gauges from Harbor Freight,.Then find the carb without an adjustment as your base #1. Hook up #1 and #2, match the readings by adjusting #2. Then on to 1-3, and 1-4 off of that base # one - one at a time. You will still need the proper adapters at the carb side. If it is a YICS engine you should get and use the temporary tool to block the secondary ports, until all 4 are synced (or find a friendly Yamaha mechanic and borrow one). As for getting the mixture right - that alone is a mystery religion without using the proper tools. Unless you know what a 14.8 - 15:1 mixture feels and sounds like. Another variable with OLD bikes (besides rusting tanks and such) is now we have "green approved" corn crap gasoline. That alone means re-jetting a little richer to get back the original power. Or stopping by the airport for some 100 octane low lead gas. For your home "generator," not road bike. That would be illegal.
@isbemorph4 жыл бұрын
I found out proper adjusting of these mixture screws with a color tune is crucial. In my case they were set too lean, thus it was causing problems with idle and the rpm hang after cracking the throttle.
@wobu53613 жыл бұрын
yes, these were set at the factory too lean (US govt regs). 1 extra turn out (counter clockwise) give you a better mixture for cold starts.
@scenariofilmssonnydelacruz63684 жыл бұрын
Why did they hide that screw that make us so hard to adjust it?
@lilandmadsmoto62354 жыл бұрын
Seriously!! From what I've read online, it was an emissions thing. I think they had to make the bike run lean and not make it adjustable by the end consumer so that the bike qualified for import. I guess they weren't thinking these things would be around for years and years.
Пікірлер
Did you recover the screw with a replacement plug when you were done or did you leave it open?
idle jet, idle screw...
I have a 81 XJ650 too but don’t know if same Seca. In the middle of wiring and tuning carbs. Hope we can learn together. Be safe!
Isn't that set at factory?
I just got one for $100 but it needs the carb rebuilt and some other small things. What do you guys think.
I see about one year has passed since you posted this video of your Seca 650 project bike. Would be good to see what progress you've made with refurbishing. Or maybe it became insurmountable and you decided to unload it instead? From what I see via my computer monitor screen, I'd say you have (had) a decent first-time "platform" worthy of bringing back to prime. This particular bike has most of what you might wish for in a long-time city/freeway road runner. No doubt the parts (such as side covers) are still readily available, new and used. The engine sounds solid though that's not a big surprise. I trust the oil level was good for your first starts/runs. The Japanese engineered their air-cooled threes and fours to high levels of reliability. A suggestion: you might consider cutting down the extended segments such as shaking dog food from the exhaust. Good luck and thanks for a good video!
great job
Great video ladies, very informative thank you 👍🏻🇦🇺
Very cool, I am about to start a Cafe racer project using a 1980 XJ650 ...... enjoyed your video, thanks for sharing 🇦🇺👍🏻
Thank u for the help
Had a Seca 550 in college, and currently looking to buy one that I saw on Craigslist. They are great bikes, Good luck. I also have a engineer University age daughter, that is a licensed motorcycle rider. She is ride Honda CM200T, Ducati Monster 750 Dark, and GS500e (which we rebuilt together) Good luck and safe riding for you both.
This was an amazing video just to let you know.
Thanks!
Good on you for having a crack at a bike rebuild. May I suggest checking out Mezzmo Engineering’s channel. Great reference for working on XJs. Cheers
Awesome stuff gals. I have an 82 Seca and i want to remove my headers to wrap them soon. You should as well since its off. What size did you need to remove the header bolts and for the 2 underneath? Thanks! Will subscribe. The dog food made me laugh.
Love this channel! Keep it up
Thanks, Jackie!
Do you know how to set them. Someone in the past has been messing with them and now I need to get them balanced again
When I set the screws, I screwed them all the way in and then backed them out 3 full turns. (360 degrees x 3) This seemed to work well. However, this was after I had fully restored the carbs. I knew the float settings were identical, the butterfly values were set identically, and everything was dialed in - these carbs were better than new. If you are starting with the carbs on the bike and they are in unknown condition, a color tune as Mr. Thomas points out in this thread, might be the best way to go. I've never done it myself, but it seems legit. Post back and let us know how it goes. Good luck!
Also, a carb sync gauge will help, too.
Lil and Mads Moto ok and thanks for getting back to me. I’ll definitely let you know how I get on. Thanks again
Can start by screwing them al the way in, then backing out 3 full turns, then making fine adjustments after... But a colortune kit takes all the guesswork out of it
thanks so much just bought an xj650, cleaned the carbs and is still running like shit. Just assumed that you couldn't adjust these carbs I never would've found the location of these adjustment screws.
I'm glad you found it useful! I'm a hobbyist, and I'm learning so much along the way. I did a full restoration on my carbs, with a bench sync and float bowl test. If you get stuck on something, I can try to help.
@@lilandmadsmoto6235 Just patched up some vacuum leeks on my 650 with new gaskets. Have all my needles at 3 turns out now. Wondering if theres a more accurate way to sync the carbs without a gauge (too poor to get one) or if tuning all carbs to the same setting is enough
@@bengearhart4613 Without a carb sync, you can opt for a 'bench sync' at zero cost for tools. Matt has a good video on how to do this. kzread.info/dash/bejne/oYqgrsutqqmZaKw.html
@@bengearhart4613 You will never get it right without taking actual readings on the bike. Old dogs can get close by sound, but if you are new to syncing 4 carbs you will just frustrate yourself into circles and end up with a rough running bike waaay out of tune. You can start with a pair of $16.00 vacuum gauges from Harbor Freight,.Then find the carb without an adjustment as your base #1. Hook up #1 and #2, match the readings by adjusting #2. Then on to 1-3, and 1-4 off of that base # one - one at a time. You will still need the proper adapters at the carb side. If it is a YICS engine you should get and use the temporary tool to block the secondary ports, until all 4 are synced (or find a friendly Yamaha mechanic and borrow one). As for getting the mixture right - that alone is a mystery religion without using the proper tools. Unless you know what a 14.8 - 15:1 mixture feels and sounds like. Another variable with OLD bikes (besides rusting tanks and such) is now we have "green approved" corn crap gasoline. That alone means re-jetting a little richer to get back the original power. Or stopping by the airport for some 100 octane low lead gas. For your home "generator," not road bike. That would be illegal.
I found out proper adjusting of these mixture screws with a color tune is crucial. In my case they were set too lean, thus it was causing problems with idle and the rpm hang after cracking the throttle.
yes, these were set at the factory too lean (US govt regs). 1 extra turn out (counter clockwise) give you a better mixture for cold starts.
Why did they hide that screw that make us so hard to adjust it?
Seriously!! From what I've read online, it was an emissions thing. I think they had to make the bike run lean and not make it adjustable by the end consumer so that the bike qualified for import. I guess they weren't thinking these things would be around for years and years.