"76 911 oil pressure

[Shop Teacher]

Hi, this is my first posting, I hope I am doing it right... I have a 76 911, 2.7. It is very stock I have had it in the garage for the past 15 years. Reciently I have had more time on my hands so I have taken it out of the garage, lisensed it and have it road ready.. I did a generial tune and it runs good.
Problem is... and this is a problem from years back, when the oil temp gets above 230 degrees the oil pressure goes down, about 20 to 30 at 2500 r.p.m.s., the light doesn't come on, it doesn't rattle, but I am a worrier... What is normal? would it be a very worn engine or maybe just a relief valve. What can I check or do. any ideas will help... Thanks very much.
David

[Gogar]

The general accepted rule is that you should look for 10-15 PSI per 1000 rpm. So, at 2500 rpm, you could look for at least 25 psi and not worry too much. You might want to look into the "camshaft oil line restrictor" and see if it is something you are interested in trying.

Part # PEL-CAMRSTN

It's a subject of much discussion on the boards, and something you could install on your engine if you're interested, and it's very easy.

[slodave]

Oil pressure changes as the oil gets warmer (thinner). I just put 40 weight back in and noticed higher pressure when first started, then it was noticeably lower (to me) when after running for an hour or so.

Dave

[LakeCleElum]

Your oil pressure is quite good. Some 2.4 and 2.7 engine show damn near zero at a hot idle. Bruce Anderson sez not to worry as long as you have 10-14 lbs per/1000 rpm above idle.

The cam restrictors are a good idea. Pelican has them.

[wowzer911]

"Some 2.4 and 2.7 engine show damn near zero at a hot idle. Bruce Anderson sez not to worry as long as you have 10-14 lbs per/1000 rpm above idle."

I can sleep better at night now!

[grant lyon]

Might want to look into an 11 Blade fan and front fender oil cooler if you're consistently running 230° and you don't have these. My otherwise stock 2.7 stays below the 212 mark with these.

[Shop Teacher]

Hi Everyone, Really good feed back thanks a lot... I am going to go with the oil restrictors first then look at cooling this puppy down. The eleven blade fan is expensive, so I'll do that last but, I'll start on the front end cooler. This has been really good information, I will keep you posted on the progress.

Thanks, David

[Paulporsche]

Good luck and be sure to post some pictures of your car when you can.

[Howard M]

Don't put that 11 blade fan off too long. My 76 has been very reliable since I bought it in 1983, but I've kept it cool with the fan and the front cooler.