Pelican Parts Forums

Pelican Parts Forums (http://forums.pelicanparts.com/)
-   911 Engine Rebuilding Forum (http://forums.pelicanparts.com/911-engine-rebuilding-forum/)
-   -   Early forged rockers - any pointers for evaluating condition? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/492810-early-forged-rockers-any-pointers-evaluating-condition.html)

kenikh 08-19-2009 06:59 AM

Early forged rockers - any pointers for evaluating condition?
 
At $40/ea to chrome the faces of a forged rocker arm, I'd like to know which of my rockers don't need to be sent out for rechroming.

Can anyone enlighten me as to what details might suggest a forged rocker needs this work vs. one that doesn't?

Thanks!

camgrinder 08-19-2009 07:31 AM

You will need a "Coating Thickness Gauge" to measure the chrome thickness. I think the magnetic type are the cheapest.
Most likely the re-chromed ones will end up with a thicker more consistent face vs. the used oem ones.

kenikh 08-19-2009 07:48 AM

Whoooooooooo BOY! They are EXPENSIVE! Even the magnetic pen type is $200! Ouch.

That's almost half the price of recoating them all!

Well, now to decide whether to use my forged set or my cast set. The forged ones have a slightly better rocker ratio, so am apt to go that way, but I'll puzzle this out today and have to make a decision.

camgrinder 08-19-2009 07:55 AM

I would call around locally. Sometimes crankshaft grinders will have this tool. Or maybe a chrome plater, or powder coating place?

kenikh 08-19-2009 08:01 AM

Will do!

304065 08-19-2009 10:39 AM

Quote:

Originally Posted by kenikh (Post 4844794)
At $40/ea to chrome the faces of a forged rocker arm, I'd like to know which of my rockers don't need to be sent out for rechroming.

Can anyone enlighten me as to what details might suggest a forged rocker needs this work vs. one that doesn't?

Thanks!

Kenik, why not save the early rockers and use the later cast ones? They are cheap, they break if you zing the motor and the rocker ratio doesn't really make a difference. That is what I did.

kenikh 08-19-2009 11:14 AM

Quote:

Originally Posted by john_cramer (Post 4845223)
Kenik, why not save the early rockers and use the later cast ones? They are cheap, they break if you zing the motor and the rocker ratio doesn't really make a difference. That is what I did.

That's what Camgrinder said! :)

Will probably just do that, then.

Flat6pac 08-19-2009 12:29 PM

The forged rocker, if you jump time wastes the engine because they dont break.

aws 08-19-2009 12:30 PM

Kenik: The early forged rockers are much lighter than the cast ones. ( 109 grams versus 135 grams for the cast ones) They will not break with higher spring pressures associated with running over 8000. if you are interested in selling the set please PM me.

aws


All times are GMT -8. The time now is 06:36 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website


DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.