It would be a awesome video segment if you could do a video over mechanical fuel injection (Alkydigger assassinator, Ron’s toilet , Ron’s terminator etc.)would be awesome content and I’m sure there’s a lot of people that would love to watch it!!

With the vein on the Cadillac head. Darin Morgan did a video about wet flow and said if you spray dyechem blue in the port while its flowing you can see where the vein needs to be.

With my Jessel shaft rockers i had to run shims for the proper alignment and was able to run the head studs with about 80 thousands of clearance under the rocker mount and very minimal grinding on my AFR heads i was able to run a 3/8 .135 wall pushrod.

Im curious about the "off the seat" rocker ratio. i.e. The angularity between the cup, the roller, and the fulcrum at any specific ratio. This is rarely ever recognized and mentioned. David Vizard mentioned it.

@flinch622

2 жыл бұрын

I vaguely recall some comment along those lines. In other words, not all ratios are made the same way: cup to fulcrum centerline vs fulcrum to roller centerlines can vary while maintaining the exact same math ratio. All depends on how much lift needs managing, while affording proper spring clearance from rocker. If you don't like clearance, try a different rocker, but try to avoid notching rockers seemed to be his main point.

The way you explain things is good.Danny Jesel makes some real nice stuff as you were showing. Keep up the good work!!!!!!

Your not the only one that has fun with starter wires🤪🤪🤪👍 ask me about my 1977 Buick with a 350-H motor in a regal sedan and the BS I have to go through for the solenoid wires , a real pain. But I like your ideas about installing disconnect plugs👍👍I never thought of that😜

@MrMopar413

2 жыл бұрын

@@michaelangelo8001 I’ve been recently buying them on Amazon because theirs a big selection of connections and other stuff, then what’s available in my local auto parts and hardware stories

I tend to now spec my T&D stuff in steel instead of aluminum......Easier to work around.....No sleepless nights worrying about metal fatigue.....😁

Man, I actually quite enjoy the Cadillac head. The best things to watch is the stuff that's different.

We had a hell of a time adjusting the jessel shaft rockers on the profiler heads i believe because our engine builder didn't use the right offset but we kept breaking adjuster cups!

Yep. Been down the starter road before. A pigtail [preferably with a deutsch connector] is a gift to yourself. 15 to 18 inches puts it where hookup is easy. You can add a secondary plug in [off of battery] for bumping over with a trigger for maintenance without ignition on: just don't forget to fuse it.

My lgm shaft mounts fit the same way on my profilers. A little massage with a carbide bit and your good to go

any chance you can do something on valve guides? clearances material etc. common problems?

If you put an old school Ford solenoid on the firewall, you can turn your setup into a one wire starter. You'll need to make a jumper wire from Bat + to start position on your solenoid. You'll need one big and one small ring terminal at the starter and about 4 inches of wire. With the Ford solenoid on the firewall, the one big wire going to your starter will be cold, unless the key is in start position.

@thisisyourcaptainspeaking2259

2 жыл бұрын

I did this same thing on my International BB because the key switch circuit had too much resistance to reliably pull in the starter solenoid.

I got Crower Stainless Steel shaft rockers because I didn’t want to deal with the fatigue issues that aluminum has. Took about three weeks to get them.

Thx again

Excellent video here..I subscribed..can you tell me when its time to start looking into offset shaft or roller rockers ? i plan on doing a build thats not super high horsepower but want to use top quality parts..I am thinking about using AFR 195 cc with the 2.02 intake valves or even down to their 180cc cnc ported 2.02 heads and not sure if I would need offset or regular rockers.. I will use a hydraulic roller cam in the intake duration 236 @ .050 and exhaust duration 242 @ .050.. I am sure AFR can tell me but you seem to do lots of work on aluminum heads so I figured I would ask you first. any info greatly appreciated.

There's an LS vendor who's a big fan of Yella Terra Pro rockers but I'm nervous about aluminum fatigue. I'd like to see which steel rockers offer the least weight over the nose and compare against oem LS rockers.

Any luck with the SpeedMaster DNA Rail rockers?

Have you dealt with Manton rocker products before?

What's better rocker ratio over cam lift?.. im trying to figure some ls1 stuff out . For example flycuts .. figured you maybe know

@jrdmotorsports9718

2 жыл бұрын

Cam lift is better. Rocker ratio is a bandaid.

I like the Nuggets

Eric, I have a question for you on the Jessel sportsman rockers. I'm having trouble using arp head studs clearing the stand. Info on heads AFR 227 race ready. Enginge gen 2 LT-1 reverse flow.

@WeingartnerRacing

5 ай бұрын

You have to use the jesel bolts on the sportsman

I'm bad with names, so just say one well respected guy says spray dye while flowing it will tell you were to put the tail and it sounds like you could easily add that to Sunday's test

what about endurance shaft by scorpion?

So will this increase reliable rpm operation even in a hydraulic roller cam operation? Like 7500 and up rpm operation?

@WeingartnerRacing

Жыл бұрын

Yes

ever try the jpw shaft rockers?

I've ran Jesel for a while now, and will be using T&D on my new heads. I believe T&D makes a superior product to Jesel.

You are correct about shaft rockers. I bought my son a T&D Sportsman for his all iron dirt track 422” Dart SBC. No more poly locks or bar. Adjustment stays the same all season. No guide plates. Best $1100 I ever spent.

Can you explain how rocker arm ratio effects can lift and valve duration

@jrdmotorsports9718

2 жыл бұрын

It's a fulcrum. Change the position of the pushrod cup to the fixed trunion, change the ratio. Further out, less ratio, less push on the valve. Further in, more ratio, longer push, more lift. Doesn't really change duration @.050"all that much, but does speed up valve speed, especially at .200" and further up the lobe.

Most of these shaft rockers I can't see any oiling exiting holes to get oil to the valve springs , be nice to see how these thing oil cheers

Have seen 20 cfm flow loss on ls head after chamber softened

Starter wire,,, for decades I have had a wire to the starter and a joiner where it is convenient. Ona Ford I have a piece of steel bolted to the starter main power that goes just behind the bellhousing so simple to connect power and alternator wires and keeps them away from header heat as well

@WeingartnerRacing

2 жыл бұрын

When it comes back apart it is getting one.

Hey in mechanical fuel injection setup because of the increased cylinder pressure MFI motors tend to blow the cylinder wall out more often. I was wondering if going with a bigger exhaust valve would help with the increased cylinder pressure?

@WeingartnerRacing

2 жыл бұрын

No. The reason why it blows out cylinder wall is the mpi doesn’t atomize as well and those raw fuel leads to detonation/preignition conditions.

@austinfuqua8395

2 жыл бұрын

O ok that’s makes since, And I have herd that before.Is there any other way to help the mfi atomize the fuel better? Maybe move the nozzle father up on the intake ports?

@richardcumber5476

2 жыл бұрын

@@WeingartnerRacing plumbing and part choice adds to that equation. High RPM combined with positive displacement pump flow combined with a lack of adequate high speed bypass(es) adds to the very real chance of hydrolocking. All fuel pumped, that isn't going over a bypass, is going into the engine.

@austinfuqua8395

2 жыл бұрын

Exactly I never had this problem with the mfi on my setup but I’ve had a couple people blow there’s up and blame it on the injection. That’s why I didn’t know if there was something different you could do with the heads for a mechanical injection setup?

@richardcumber5476

2 жыл бұрын

@@austinfuqua8395 we had our fuel system gone through and flowed by Kinsler. Our supposedly "ready to run" setup had a mix match of nozzles 18-38.

Eric, I like your humility. One thing I'd like to learn more about with shaft rockers is how they relate to different valve spacing. I think I need to find a buyer for these 195s and have you set me up with some bigguns for my 427 sbc.

@the4flatgarage

2 жыл бұрын

What 195s do you have, and how much are you asking for them?

@SenorYuk

2 жыл бұрын

@@the4flatgarage they're the competition version. Probably looking for a little less than 2k.

Good stuff. I think people would love to see the difference between the Jesel BBC Sportsman and Po series. Also a setup of each would make for great viewing. Nice vid for sure.

Gday mate from Australia! I'm enjoying all your videos! I have a question for you on valve sizes, I'm currently porting a set of edelbrock performer rpm oval port heads that are going on my 540 big block chev I know they are too small for the size of my motor but I'm on a budget with this motor as I have two other big block motors that I have spent alot of money on and I'm trying to put this motor together on the cheap for my street car. The heads come with a 2.19 intake and I have a spare set of 2.3 inch valves that I was considering using and blending the ports after cutting the seat's. My question is with porting the entire inlet do you think it's worth putting the larger valve in? Thanks in advance.

You touched on the offset rockers and how that makes the push rod canted, good to note you can get lifters offset to straighten the push rod up when running offset rockers

@jrdmotorsports9718

2 жыл бұрын

True, IF you offset the same amount. Most real offsets vary between .450" and .750" at the rocker. Lifter is .150" to .180" on an .842, up to .210" on a .903" Not nearly enough to straighten it, especially with inline valve arrangements. Pushrod angle is a necessary evil.

@timchadwick8245

7 ай бұрын

​@@jrdmotorsports9718yet the offset pushrod cup lifters come with their own disadvantage of side loading the lifter, no? Gotta pay somewhere lol

@jrdmotorsports9718

7 ай бұрын

@@timchadwick8245 Agreed, as that is what my reply was hinting at. You're not always going to have that perfect scenario, and will usually have sacrifice somewhere. That's the point I was trying to make to the original comment.

any reason the shaft isn't one piece as in full length?

@WeingartnerRacing

2 жыл бұрын

It would be almost impossible to install because some valves would be open and it would snap the shaft when you tighten them down.

@ShawnDickens

2 жыл бұрын

Can't bolt them down when on base circle if one bar

@WeingartnerRacing

2 жыл бұрын

@@ShawnDickens they would all have to be on the base circle. That’s 8 valves on each side. That’s why they come in pairs.

@ShawnDickens

2 жыл бұрын

@@WeingartnerRacing that was what i was trying to say.

Looking at your headers it looks like Jet Hot has expanded their processes, it appears they are starting to utilize a molten application process like Swain Tech, when you pointed out the rough texture that was the give away. PS; Swain is a nice white finish rated for 3000 degrees.

Is there a reason you picked the driver side mount for your supercharger vs the passenger side? It seems there is more room / less interfering components on the passenger side that could make installation/ fitment of charge piping and intake piping easier.

I think Moroso makes a starter wire harness that makes swapping out starters much easier because the connections or remotely located and down on the starter itself add a quick disconnect stuff

I ordered a set and it took 5 weeks to get them what the problem

@jrdmotorsports9718

2 жыл бұрын

5 weeks? That's all? Currently at 12 weeks waiting on parts. Problem? Ask the fake news.

@curtisendicott5989

2 жыл бұрын

I don't understand if it's a USA product not China why is it taking any time to get them

@jrdmotorsports9718

2 жыл бұрын

@@curtisendicott5989 Because fake news keeps shouting the sky is falling, spreading lies and fear, so businesses shut down or don't have enough people, slowing manufacturing down. Therefore demand goes up while supply is down. And prices go through the roof, and you wait.

So you're saying you listen to Kesha... ;)

I’m a little concerned with rocker arm placement. For this all the rockers should be dead center on the valve tip, not just close to center.

Thank you Thank you

How about one lifters and offset listers. Crower,Howard,Crane,Isky,Comp,Bam. Just to list a few I love your tech talk.

At what rpm point etc do you recommend shaft vs regular stud rockers?!? I was seriously thinking of going this route with my AFR 210 race head version 350CI FORGED Dart block bottom end.. XFI 292 HYD ROLLER cam 9.5:1 compression and 10-15lb of boost. Shooting for 700hp at wheels on down the road. 6500 RPM limit. I just want a engine i can beat on and i know it will handle it. Thoughts?!? Currently a 9.8:1 2 bolt gm ZZ430 clone FB heads, LT4 HOTCAM engine. Plan to add a supercharger next year... 8-10lb boost max. Just don't trust the bottom end past 8-10lb. I was thinking maybe a 383, or competition 195's but the 210xx port isn't much bigger than the comp 195 port and flows about the same plus the springs are already setup for .650 lift.

@WeingartnerRacing

Жыл бұрын

I like shaft rockers because they are easier to me. I don't know that you need them on a hydraulic roller setup. I am an AFR dealer and I would be happy to sell you a set. I would do the AFR 210

@ICONBADGTA

Жыл бұрын

@@WeingartnerRacing I am coming to (YOU) when it's time.. I got to get the TKX trans and supercharger for it, Got everything ready minus the hydraulics which i am going factory 91 formula as i got the (1) bellhousing that uses factory hydraulics but bolts straight up like the TKX requires.. Cost me 250 for a used bellhousing, rare part, only made them for like 5 years... Then i am gonna start the dart block build (GOD WILLING) next year sometime as that 2 bolt factory bottom end ain't gonna handle 6500rpm and 700hp long, so i plan to be (GENTLE) with it until i get the dart/afr engine done. Then with proper ring gap and 4340 bottom end, i know she will handle the beating or "FUN" i plan to have with it.

Put a Ford style solenoid in the truck, and make a brass jumper from the main battery cable to the solenoid, then all u need is the bat cable goin down to the starter, no fighting the little wire......just a thought