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i also just ordered the gasket kit for the engine, but cant find the overhaul kit for the carbs, i dont even know exactly what brand / type my carbs are, any idea or where to look for an ID ?
As the car has been modified I might not be much help. The stock US delivered CIS equiped and camed 75 911S has a current Bosch number of WD5DPO. For the US based cars I don't think there was a difference in the Carrera. My best suggestion would be pull a plug and see what's in it.
Terry
75 911S
since the engine is running so bad, and everything that has been done to it is basically wrong, i wouldnt want to trust anything that has been put into it.
the car itself seems to be german version since there are no miles on the speedmeter, but the engine may have been replaced so no idea.
any clue on the spark cables and engine oil to use ?
I wouldn't beat yourself up to bad regarding the modifications. Who ever did it was neat if nothing else. Might want to take a look under the car at the exhaust system. If it has been changed to a two outlet system into a dual inlet muffler you may have something else here. A performance upgrade from 20 years ago changed the exhaust system to a dual outlet similar to the 74 2.7 engines, changed pistons,cams and ported the heads. These changes couldn't be effectively fed by the Bosch CIS injection so carburetors where used. I gather from reading that Webers where the choice at the time here in the US.
Terry
75 911S
I NORMALLY always use mobile 1 full synthetic on all my cars, i would assume these engines dont run on synthetic ?
checkout my muffler system, you guys may get a good lough out of it..
and yes i haven't cleaned the car underneath, im currently building a carport for it, so dont plan on doing much before that.
any recommendations on a replacement muffler system, i do not want it to be too loud.
you should be able to get a complete exhaust stock system pretty cheap. Guys take them off all the time to upgrade.
The problem will be getting the nuts off your existing system without breaking off exhaust studs. I would go to pelican.com and read up on their forums.
I use VR1 dino in my 75. The SSI"s mentioned are an aftermarket version of the 1974 Porsche exhaust system. They give you a balanced dual outlet heat exchanger that mates to a dual inlet single exhaust muffler. As noted be careful removing the old exhaust. Heat the nuts cheery red before turning them off. Don't ask how I know this.
Terry
75 011S
wow a car with Thermal reactors in 2017. They're still out there.
I've got a stock 75 heat exchangers with Bursch thermal reactor delete headers and a bursch muffler for 500 plus shipping if you want. I'm located in Las Vegas.
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1975 2.7 general tune up questions
