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-   -   Rocker roller coversion for 502 - push rod length? - need valve train expert (https://www.offshoreonly.com/forums/general-q/336611-rocker-roller-coversion-502-push-rod-length-need-valve-train-expert.html)

Cap'm Kurt 04-24-2016 08:44 AM

I called EP twice and apparently of the mega amount of sets they have sold - no one has ever called back with this issue.

Actually i called several more times because i did have other issues with them as well. Some of the polyloc set screws came in the set as 7/32" hex wrench, the other four -- where 5mm !!!! Thought i had been working too hard so tried the two wrenches about 5 times. He did send me four more correct ones though.

Also one of the shallow recessed areas where the bottom of the adj nut hits the trunnion but fits into this recess, well, the nut wouldn't go down into the recess, but only by a few thousandths. just had to clean it out a little.

I noticed that the Comp Cam gold unit had no recess cut in it, it was just ground flat across the top.

I figured if i got another set, something else might be wrong, so i just kept those, but will be returning them.

mike tkach 04-24-2016 08:57 AM


Originally Posted by SB (Post 4431807)
Sounds good.

Since you are the OP and have pent so much time and frustration,could you push whom ever got these for you,to find out who makes these damn things for Engine Pro? Would be possibly good info for someone who may be interested ? Yeh, most here have or get Crane, Scorpion, Comp Cams,or etc well know companies stuff...but, you never know who doesn't.

i am pretty sure ep gets those rockers from speedway/pro comp.chinese junk.

SB 04-24-2016 09:34 AM


Originally Posted by mike tkach (Post 4431824)
i am pretty sure ep gets those rockers from speedway/pro comp.chinese junk.

You sure or or are you going by my earlier questioning ?


Originally Posted by SB (Post 4431098)
These Engine Pro Rockers wouldn't happen to be private labeled from Speedmaster (used to be ProComp) would they ?

https://speedmaster79.com/engines-co...t=238&limit=36

Engine Pro : http://www.enginepro.com/downloads/n...RockerArms.pdf


Speedmaster BBC :https://speedmaster79.com/media/cata...B-SSTEEL_1.jpg


Cap'm Kurt 04-24-2016 09:46 AM

Oversized trunion ?
 
1 Attachment(s)
[ATTACH=CONFIG]554554[/ATTACH]

interesting.... look at the bottom line ... comp cam advertises "oversized" trunion !

getrdunn 04-24-2016 12:27 PM


Originally Posted by Cap'm Kurt (Post 4431769)
getrdunn - why inner third. wouldnt' dead over the center of the valve stem be better ??

Congrats... Lesson learned. Chit happens. Btw your correct by center of stem to center of roller tip is ideal however when you roll engine over just make sure as u watch the roller tip it will move slightly both directions on the stem. So I just meant you will have to find your happy spot (center of tip to center of roller) and try and shoot for equal amount of measurement on stem that the roller tip does not touch. You might be perfectly fine as is but just ck it regardless. I always just aim for total movement in the inner 1/3rd of the stem as valve opens and closes.

Cap'm Kurt 04-24-2016 09:12 PM

1 Attachment(s)
Are these geometry readings close enough to center or should i go buy new shorter pushrods???
I don't mind getting them if you think thats far enough off that it should be corrected.
4 pics coming.

[ATTACH=CONFIG]554597[/ATTACH]

Cap'm Kurt 04-24-2016 09:13 PM

1 Attachment(s)
[ATTACH=CONFIG]554598[/ATTACH]

Cap'm Kurt 04-24-2016 09:13 PM

1 Attachment(s)
[ATTACH=CONFIG]554599[/ATTACH]

Cap'm Kurt 04-24-2016 09:14 PM

1 Attachment(s)
[ATTACH=CONFIG]554600[/ATTACH]

End of pics.

mike tkach 04-24-2016 09:59 PM


Originally Posted by SB (Post 4431839)
You sure or or are you going by my earlier questioning ?

sb,if you look at their list of supplier,s you WILL see speedway on it and they look EXACTLY like the ones speedway sells.i would keep the stock gm rocker arms before useing the pro comp/speedway JUNK.jmo.


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