3.6L Conversion on a 77 911s


Update 9/10 Done! Only minor issues remain, like hooking up the heater and installing the correct muffler.

My sad story...

This is where any 911 engine owner may end up some day.You - or someone driving your car - will shift from 2nd to 1st instead of 3rd, or 4th to 3rd instead of 5th, and you'll end up with a nice collection of conversation pieces and paperweights where you used to have an engine.In my case, it was a friend of mine driving the car at an autocross, and I got to watch the execution. I'm guessing that the engine saw ~13k RPM, which floated the valves and caused them to hit the pistons.

It was obvious that something was wrong with the car, but I wasn't sure what.I got it home, and did a compression test: 0 lbs of compression on #6, and 120 to 145 on the rest.A subsequent trip to the local shop revealed that I'd bent all of the valves. I started down the road of a valve job, but then decided it wouldn't be worth it in the long run, and opted for the upgrade instead.

So, I started doing my homework. I knew Instant-G (Dr. Steve Timmins) offered a 3.6L conversion kit.I got lucky on the 911 list and found a rebuilt 3.6L engine from DC Automotive, so the stage was pretty much set to do the conversion.

Details of the project

Links

Other 3.6 Conversion Projects

Misc Performance Data

CarWeight (lbs)HPLbs:HP
VW Bus22005738.6:1
'77 911 w/2.72470165 15.0:1
'77 911 w/3.6 (chip, cone filter & exhaust)24702808.8:1
'90 964 w/3.6 303125012.1:1
'90 964 w/3.6 (chip, cone filter & exhaust)303128010.8:1
'79 9302870265 10.8:1
References
Pelican Parts 911 FAQ
All figures are stock unless otherwise specified
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