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vacuum specs for 77 911S

Vehicle Information: Year: 1977; Body Type: Coupe;

over fill engine oil

Vehicle Information: Year: 1981; Body Type: Coupe;

Fuel Line

Vehicle Information: Year: 1983; Body Type: Coupe;

I have a cracked high pressure fule line where it comes out of the access tunnel by the fuel pump its the plastic one. Can I cut the ends off and use it as a shelve for a new line or will it reduce the fuel rate too much? the car was built for use overseas and modified for the US when in . Thank You For Your Time Steve White

reactor tube

Vehicle Information: Year: 1977; Body Type: Targa;

Hi (having trouble with this form which wouldn't let me enter name etc). Our local non-porsche mechanic has a lien sale '77S that he has serviced and wants to sell. He says it was recently rebuilt and is a strong runner but doesn't know what needs to be done to smog it since the reactor tube seems to have been disabled or modified.Does this make sense that it would be disabled to run better and if so, what is likely involved in smoging it? Any insights would be very much appreciated. Thanks, Brent

Recommendation for exhaust gas analyzer?

Vehicle Information: Year: 1975; Body Type: Coupe;

Any experience with the Gunson exhaust analyzer? Would you recommend it? If not, is there an alternative? Thanks!John Berry


Vehicle Information: Year: 1981; Body Type: Coupe;

Recently replaced a stock exhaust with a Burschunit, noticed a bit more power and sounds much better, however my idle dropped a few hundred rpms, adjusted it back up to normal, but was wondering your thoughts on what might be the cause of this.

100 octane sunoco fuel

Vehicle Information: Year: 1981; Body Type: Coupe;

Recently a Sunoco fuel station opened close by that sells 100 octane fuel a 7.65 per gallon,I tried it in my 81 911SC,its a low mileswell kept original car,pretty much stock,exceptexhuast air filter ignition,it runs great and sounds awesome,my question is,is this ok to use?Sunoco says it safe for all cars,the cost is not a big deal because the car only gets driven a few hundred miles a month.thanks

drivability under 3000 rpm

Vehicle Information: Year: 1982; Body Type: Coupe;

HelloMy recently purchased 911 SC seems to have a problem with coasting under 3000 rpm.It is running hesitantly and slightly jerking and not feeling right.Abov 3000 rpm it does run great with no issues whatsoever,also on acceleration it seems to be okay even under 3000 rpm.Also when you increase the idle to lets say 2000 rpm manually and hold it there,it is running hesitantly also,like not getting enough fuel.I dont know what to make of it,please helpAny hints will be greatly appreciatedRegardsFred

Increasing Displacement - Cam Profile

Vehicle Information: Year: 1979; Body Type: Coupe;

I forgot to add that with the CIS you can't go too wild with a cam, but a good choice is to have the stock SC cams re-ground to a 964 (Porsche newer model) profile. This works very good in the SC and makes a very steetable engine. Cost for the re-grind runs around $300, well worth it.

Increasing Displacement

Vehicle Information: Year: 1979; Body Type: Coupe;

On the question of doing a short stroke 3.2, I was lucky to find a nice set of Max Moritz 98mm Mahle pistons and cylinders. The alternative is to obtain a set of Mahle 95mm cylinders from a 3.2 Carrera, can't have the sealing ring on top of the cylinders like the 3.0s have, and send them to ERS Racing to be bored to 98mm and Nikasil recoated then combine that with JE 98mm pistons, 9.5:1 compression. Not as expensive as a new 98mm P&C which run $4,000


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