924Board.org

924OZY · Posted: Tue Feb 02, 2010 5:28 pm Post subject: Whats your favorite CAM?

Hello,
Just wondering what your favorite cams are for these motors,

and what performance gains, they gave you.

Also whats a safe rev limit with the stock bottom end?
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924 N/A snailshell, superpro linkage bushes, 2.5"exhaust

4.0L ef Fairmont, 3000rpm stall, shift-kit, J3 chip, 3" exhaust, self tuned using tunerpro, soon to be boosted,
expecting 350Kw at wheels at 10psi.

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

1. Integral Cams
2. Not installed yet, so I don't know the power gains
3. 7000 RPM max, but the bottom end isn't the constraint on rev limit
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erstwhile owner of just about every 924 variant ever made

Joes924Racer · Posted: Wed Feb 03, 2010 2:05 am Post subject:

Hey its not my over-all fav by any means though the wallet
likes it. Schneider racing cams offers regrounnd cams.
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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

924OZY · Posted: Sat Feb 06, 2010 8:03 pm Post subject:

Thanks for that.
There is a guy near me that does regrinds as well.
His name is Ivan Tighe, and I think his websites www.Tighecams.com.au.
He has like 20 differend grinds for the 924,

He has a good reputation in racing and speedway over here.

I would just need a spare cam to have reground.

I wasn't sure if reground cams end up with stock size bearing journals?
Could someone let me know?
I know they can/ do add material with a molybendum rod or something,
but thats about it.

Also does anone have/ or know any famous grind specs for these,
eg, dprod, le-mans, etc.
_________________
924 N/A snailshell, superpro linkage bushes, 2.5"exhaust

4.0L ef Fairmont, 3000rpm stall, shift-kit, J3 chip, 3" exhaust, self tuned using tunerpro, soon to be boosted,
expecting 350Kw at wheels at 10psi.

leadfoot · Posted: Sat Feb 06, 2010 8:46 pm Post subject:

stock regrinds would use the same bearings but depending on the grind might need some attention to the clearances of the lifter. either by using slightly bigger adjustment screws or alternatively lengthening the valves.
It really depends on the duration / lift you are tgrying to achieve.
Stu
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1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

A regrind will almost certainly require larger adjusting screws, custom cut valve stems, or lash caps.
_________________
erstwhile owner of just about every 924 variant ever made