If it had good oil pressure before and doesn't now, I doubt it's the pressure
relief valve. Is there oil in the coolant or vice versa? You said there is
no pressure at idle - is there pressure at higher RPMs? You should of course
connect a pressure gauge to the oil galley - remove one of the plugs on the
galley to do this - before you do anything else to make sure it's not the
gauge or connection.
I agree with Jason that you need a bigger or deeper rad, preferably aluminum
though obviously that won't cure the oil pressure issue.
Keep us posted. Good luck!
Sent from my mobile device
> On Aug 20, 2014, at 9:30 PM, damys@charter.net wrote:
>
> Hello,
>
> I'm new to the group and hope I can get some advice. My son and I are
> building a GT6 into a racer and need some help. We've had the engine
> rebuilt with some mods. Ross pistons, WBC cam, roller rockers, head
> shaved to approx. 10-1 compression, mild port job and balanced.
>
> At Elkhart last weekend we overheated the engine and now there is no oil
> pressure at idle. The engine runs strong, no noise, and still has
> pressure when cold. As the engine warms the pressure drops.
>
> I will add a heavier radiator cap and a shroud to direct air into the
> stock style (aluminum) radiator. It's been suggested I shim the
> pressure relief valve to increase overall oil pressure.
>
> Any advice on resolving the oil and temp problems.
>
> The engine easily turns 6500 RPM's but we have the MSD set at 6000. The
> engine has approx. 1000 miles on it.
>
> Thanks,
>
> Dave Amys
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage:
http://autox.team.net/mailman/options/fot/sjanzen@me.com
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
|