Reliability of rebuilt 2.7?
 

I'm looking at a 1977 911S that had its engine rebuilt 18,000 miles ago. The original engine before the rebuild lasted about 118,000. During the rebuild, headstuds were either helicoiled or timeserted (can't remember which, but will confirm soon) with Dilivar studs. The engine has the Carrera tensioner upgrade and an 11-blade fan. Don't know about an additional oil cooler yet. The car overall is in very nice condition and has been maintained by a genuine Porsche aficianado, but I would appreciate some feedback on how reliable the 2.7 engines are after rebuild, timeserting, etc. I still need to confirm all the specific upgrades during the PPI, if course. If everything checks out, how does an upgraded, rebuilt 2.7 compare in terms of reliability to, say, a 3.0L from the SC?

2.7
 

this is a matter of opinions and how you will be driving the car. i have seen these motors go 50 to 70 k and pull head studs. a friend of mine has a 76s with a 180k and has recently pulled its head studs. i have on two different cars removed the 2.7 due to head studs and bought a second hand 3.0 and away it goes and not worried about the 2.7 woes. i think depending on who did the work type of studs and inserts depends on what you might end up with for dependability. with the updates you speak of i would buy the car if the inspection comes up good and enjoy it. if you like these mid year narrow cars.

I would also agree on the PPI, I love the 2.7s they are a fun driving and looking car. As long as it checks out your good to go. ALOT of people spread the 2.7 nightmare properly built 2.7 can provide years of fun. Just get it checked out before .

3.0 are notorious for the reliability, however they to can have some issues.

JW

I would also agree on the PPI, I love the 2.7s they are a fun driving and looking car. As long as it checks out your good to go. ALOT of people spread the 2.7 nightmare properly built 2.7 can provide years of fun. Just get it checked out before .

3.0 are notorious for the reliability, however they to can have some issues.

JW

By far the biggest variable will be the quality and workmanship of the rebuilder. A well-built 2.7 will outlast and out-perform a poorly built 3.0.

Totally agree with that. I'll find out as much as I can about the rebuild. Thanks for all the feedback.

What would be a concern to me is if they used helicoils, timeserts are a little better but I would like to see case savers in it. Otherwise if built well its a great engine, we beat the piss out of ours and have another experimental 2.7 in the works.

2.7's pull head studs, 3.0's break them once every 25 years or so. A 2.7, once repaired, can be a great engine. So can a 3.0 without any broken head studs.