Quote:
Originally Posted by Scooter061
Hello folks,
Having languished for years in the VW world, I am on the brink of purchasing a 911. Yes, I know the 1977 911S is known for thermal reactor reliability issues....but, it's what I can afford. That being said, can you folks tell me if this engine bay shows that the reactors have been replaced properly with something less destructive?
Thanks.
Scott in Oklahoma
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Welcome Scott! What you have on your potential purchase is exactly what my 1977 911S purchased 13 years ago and those bent pipes coming out of the exhaust ports, are not thermo reactors- they are just regular exhaust manifolds.
That is good news if you are not in California, or live in a hot climate. Thermo reactors create a lot of heat and with the 5 blade fan these cars came with, it caused a short engine life. If you are in Cali, you will need thermo reactors to pass smog.
It also looks like you do have the air injection lines, so I assume you have an air pump. If you are in Cali, you will need that to pass smog, if not take it off.
2.7 CIS engines from 1977 usually need "updates" like an 11 blade fan, hydraulic chain tensioners, and a modification to the airbox to avoid fire starting back fires.
Most cars have all of these updates by now. Search for "2.7 CIS updates Pelican" in google and you will have lots of information.
1977 is a great year because they are cheap especially in Cali because they are required to pass smog) and because they are galvanized dipped cars with very little to no rust. Just check below the battery (they can rust here) and at the lower corners of the wind screen and rear windows. (Pry the rubber carefully up, water collects in these corners and can cause rust)
Good luck and read, read read, it takes time to collect the information and this is a great community to support you!