1975 911s?
07-30-2015, 05:30 PM
#16
RL Technical Advisor
Oh no,.....not anymore. 
Mag-cased engines are now a $20K project for an experienced and qualified shop to do it properly; anything short is a band-aid.
'75 is a darned good year, especially non-CA cars that never had thermal reactors.
Mag-cased engines are now a $20K project for an experienced and qualified shop to do it properly; anything short is a band-aid.
'75 is a darned good year, especially non-CA cars that never had thermal reactors.
07-30-2015, 05:32 PM
#17
RL Technical Advisor
07-30-2015, 05:51 PM
#18
Intermediate
Join Date: Apr 2004
Location: Northeast
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Dilivar studs have been dismissed as a replacement for about 20 years now. Checking stud torque is infinitely better than a leakdown test. All factory 911 chain tensioners were hydraulic, though the 3.2L '84-'89 (and I guess Turbos we want to get picky) units are pressure fed v. sealed.
As far as the airbox and the pop valve, I'll defer to both the experts who educated me + what I saw in running both shops to say that any car that's in good tune equipped with an updated airbox with the internal cold start manifold won't have any issues.
As far as the airbox and the pop valve, I'll defer to both the experts who educated me + what I saw in running both shops to say that any car that's in good tune equipped with an updated airbox with the internal cold start manifold won't have any issues.
07-30-2015, 08:27 PM
#20
Rennlist Member
Really! Granted, I'm 5 years out of date on a 2.7L, and the only other two I personally know of were my cousin needing something for the last two 910s. But he was working with some pretty virgin and reusable stuff from my stash.