Jesel Rocker Shaft Defect ?

Anyone know if Jesel had a problem with just the end rocker stand breaking off the main stand? This engine was just refreshed by bennett racing, was never raced and just started making a noise, few days later ther other side done the same thing on the end..Jesel only will sell another 1 at cost..I was told they have updated these 3 times...

Man,that sucks.

SBF head?

A longer bolt that extends into the base of the subplate would help i.m.o.

YEah' sbf glidden head

Lem Evans wrote:SBF head?

A longer bolt that extends into the base of the subplate would help i.m.o.

Lem Looks like you hit the nail on the head. THe bolts are too short. They didn't even go through the lower base

Ace

Well I don't know whether it is a short bolt or not. To me, based on the picture, it kinda' looks like the end of the bolt is broken off also. Colormebad is going to have to tell us whether the bolt is broken off or not. The normal length of those 5/16" bolts on most shaft rocker arm systems is 1.250" long. If it's true that Jesel has had three design changes/upgrades with this particular system, then that kind of tells you that there's a problem.

Charlie Evans

c.evans wrote:Well I don't know whether it is a short bolt or not. To me, based on the picture, it kinda' looks like the end of the bolt is broken off also. Colormebad is going to have to tell us whether the bolt is broken off or not. The normal length of those 5/16" bolts on most shaft rocker arm systems is 1.250" long. If it's true that Jesel has had three design changes/upgrades with this particular system, then that kind of tells you that there's a problem.

Charlie Evans

They are not broke! It just looks that way in the pic because thats the taper on the end your looking at..Now if they used the wrong bolts with the shaft stand i dont know till i call and find out tomorrow..They say all they will do is replace at cost with upgraded part

the one piece stand doent look like its made as one piece . .

made up off muti parts and super glued together

DanH wrote:the one piece stand doent look like its made as one piece . .

made up off muti parts and super glued together

The stand is 1 piece!

I just went and looked at the stands & rockers myself..They were overlooked , cause the bolt that goes through the rocker stand into the 1/2 stand IS BROKE...
His first shaft stand was part # STN 20143-R that broke and its some sort of metal..The second new stand he ordered is PArt# Stn 20143-C . It looks like billet alum or something...

colormebad wrote:

DanH wrote:the one piece stand doent look like its made as one piece . .

made up off muti parts and super glued together

The stand is 1 piece!

I just went and looked at the stands & rockers myself..They were overlooked , cause the bolt that goes through the rocker stand into the 1/2 stand IS BROKE...
His first shaft stand was part # STN 20143-R that broke and its some sort of metal..The second new stand he ordered is PArt# Stn 20143-C . It looks like billet alum or something...

thats the cleanest break of metal then

I run the T&D setup myself ! 438 stroker with Brodix 201 heads...They are tuff stands..

colormebad wrote:I run the T&D setup myself ! 438 stroker with Brodix 201 heads...They are tuff stands..

what is the rest of the build on the 438 ?

take its a 9.5 block . what intake manifold used ?

you going to make some big block envy

New 438 Stroker
13.5.1 Compression
Brodix 201 Nitrous Heads: Fully ported & polished by TEA
ARP head studs
Glidden Victor Intake: Fully ported & polished by TEA
1250 pro systems dominator
Dart Iron Eagle 4 Bolt Block : All ARP Studs...
Crower Severe Duty Race Lifters / Offset Intake/ Part # 66378H-16
Comp Cams Double Roller Magnum Timing set....With roller bearing
Msd Dist with bronze gear...
Manton Pushrods

Comp Cams Solid Roller Cam Part # 35-000-9
Grind: FW 1828F /1866F R 115.0
Valve Adj .020 Intake .020 Exhaust
Gross Valve Lift .776 Intake .753 Exhaust
Duration @ .050 281 Int 300 Ex
Lobe Lift .4850 Int .4710 Ex
Lobe Sepration 115.0

Bill Miller Alum Rods
Diamond Custom Pistons
Moroso Oil Pan
Moroso H/V Oil Pump
Canton Windage Tray
Scat crank
Manton Pushrods
T&D shaft mount rockers & stands 1.6 & 1.7
Ford racing valve covers with Vaccum control & vac pump fittings installed
Front and rear motor plates
Elect water pump
Innovators West Balancer
Kooks Coated Headers

I just looked at the bolts in my rocker assembly the bolts do not go to the bottom of the stand. they are about .250 short of the bottom. I have never broken a stand but did break the 2 end bolts that resulted in the shaft breaking at the center bolt which was still ok. I use Harland Sharpe

colormebad wrote:New 438 Stroker
13.5.1 Compression
Brodix 201 Nitrous Heads: Fully ported & polished by TEA
ARP head studs
Glidden Victor Intake: Fully ported & polished by TEA
1250 pro systems dominator
Dart Iron Eagle 4 Bolt Block : All ARP Studs...
Crower Severe Duty Race Lifters / Offset Intake/ Part # 66378H-16
Comp Cams Double Roller Magnum Timing set....With roller bearing
Msd Dist with bronze gear...
Manton Pushrods

Comp Cams Solid Roller Cam Part # 35-000-9
Grind: FW 1828F /1866F R 115.0
Valve Adj .020 Intake .020 Exhaust
Gross Valve Lift .776 Intake .753 Exhaust
Duration @ .050 281 Int 300 Ex
Lobe Lift .4850 Int .4710 Ex
Lobe Sepration 115.0

Bill Miller Alum Rods
Diamond Custom Pistons
Moroso Oil Pan
Moroso H/V Oil Pump
Canton Windage Tray
Scat crank
Manton Pushrods
T&D shaft mount rockers & stands 1.6 & 1.7
Ford racing valve covers with Vaccum control & vac pump fittings installed
Front and rear motor plates
Elect water pump
Innovators West Balancer
Kooks Coated Headers

pretty bad little set up ! what she run?

Well i been soo busy all year getting everyone else's rides going, never go to finish it up..I crank it about once or twice a week but all i like is installing the door windows & alum door panels that would take a few hours..I just ran out of time..I wanted to make it to the grudge races that were held over the past 2 weeks in holly springs ms..They had some fast cars there but i just couldn't get done in time...It will be ready for sure first of spring or when the track opens..Which ever one comes first..I build trans & motors for a living but grudge racing is what i love to do & will be doing...

Here is when the car was first fired up before i even installed the gauges...

https://www.youtube.com/watch?v=uf5wfoXHEYk

Keep us posted on how she runs! It Sounds pretty good good luck with it too!

This pic was took at the first of the year...Looking for the later ones..

Wow, that is crap. Jesel is supposed to be top quality stuff. I have been very happy with my T&D stuff.

Is it only the ends that are breaking? Any indication that anything else could be causing this issue? (coil bind, interference of some kind somewhere?)

psfracer wrote:Wow, that is crap. Jesel is supposed to be top quality stuff. I have been very happy with my T&D stuff.

Is it only the ends that are breaking? Any indication that anything else could be causing this issue? (coil bind, interference of some kind somewhere?)

Its just the ends on each head..

Well if its only the ends that are breaking, then it does seem like some kind of design flaw, especially if they have already revised it 3 times. Wow, that sucks.

a longer bolt in the ends might help a lot

as long as the bolt doesn't go through the other side.

could a more hardened bolt help?

We dont know what gave first...Talk to alot of guys say they have seen this problem, where the rocker bolts were over tq'd..

colormebad wrote:We dont know what gave first...Talk to alot of guys say they have seen this problem, where the rocker bolts were over tq'd..

Not sure how over torquing the rockers bolts would cause only the ends to fail?---as I would assume all of the rocker bolts were torqued the same?

I fogot what site i was on but someone said he broke 2 or 3 stands till he was told to tq at what the bolts were reccomended & it was like 37 or so ..Said after that he never broke another stand..Not sure about that myself..