Fronkenstein

Yeah diesel and other light oils are amazing for degreasing and penetrating. And YES to the the replacement of all seals for sure. Just the 10 years of dry storage is enough to raise havoc with the rubber. Let's face it, the worst neglect a car can have is not being driven

Red Flash

Welcome to the world of 928s.

On the other hand, I am surprised so many parts are available in spite of the fact that the cars were such low production cars.

My rule of thumb with my 928s is that I don't even take price into the calculation.

I wish I had more time to some real engine work like you though... Good luck!

Fronkenstein

Errrr, not the case. The car is a euro car. The engine came out of either a euro or Canadian car because it was listed in km not miles.

So why did you say I would be Ok with a US 16V engine?

Which makes me ponder the question : if the car was running at the time of the accident isn't there a high probability of bent valves? Darn, I forgot about that :-(

Imo000

If it's a 78 Euro, wouldn't that be pretty much (with some minor differences) be the same as the North American model and be non interferance?

Mrmerlin

what is the engine code you have M28/??

Fronkenstein

Got the silicone gasket. I found other silicone gaskets for the in take, cam tower, etc. And yes you are correct the cam snout is broken clean off. The engine is very clean in and out. Going to replace ALL seals, o-rings and gaskets. Tantamount to a rebuild. Guess I'll wait until December for the 928 sale :-D

Fronkenstein

Yeah I hear ya. I shouldn't complain. I come from the world of antique motorcycles where almost all parts are constructed of unobtanium :-D Which equates to $$$$$. Based on my little experience 944's are proportionality worse. Porsche made a ton of them and cost of parts to do t-belt, rollers, and water pump and top end gaskets and seals is $1100 in parts alone. Gawd help you if you can't do it yourself :-\

Imo000

The sale is only on used parts.

Fronkenstein

Found a set of good used cams for $135 shipped to my door:-D

Hey if anyone is still following this thread does anyone have a recommendation on how far I should take this replacement engine down? I mean should I strip it bare and replace all seals and gaskets or...? I'd have no issue if this were some iron block that had been sitting for ten years in good storage, but I am not so confident with a 928 even with what appears to be excellent storage.

Fronkenstein

Update on the project. So we broke her open last weekend and found two bent exhaust valves - so much for 928's not being interference fit. But nothing terrible and that can't be remedied by the machine shop. The internals appear good, no sludge anywhere to be found. Varnish is heavy but I can see the glow of steel beneath to the crankshaft so not so bad. No oil returns or otherwise clogged so I it appears it was a good purchase at $250 for an entire engine complete from intake to twin disk clutch.

Now its a matter of swapping out the broken cam, getting the heads refurb'd and re-sealing and re-gasketing the beast. I am even contemplating o-ringing the heads on the intake ports while its apart. Apparently on 1978 to 1982 the intake gaskets are plain paper gasket material without reinforcement and on both engines I found the gasket crushed and partially sucked into the intake port - not good. So if the CNC setup isn't too bad we're going to cut them for -224 high-temp o-rings which are $1 each and will last 500,000 miles

Fronkensteen

vze2jshn

Fronkensteen,
Where are you located in the Northeast?

Fronkenstein

NH

Imo000

Can you post pictures of the bent valves? You don;t really need a machine shop to change them, can be easily done at home with minimal tools.

Fronkenstein

Yeah no I can't because the heads are at the shop. I am have a complete valve job done. I am not going to go through all this work and not have a proper top end. I know I could do it myself but since we're going to clean the face up on the gasket surface I might as well let them do the valves while we're there. $700 to refurb a pair of heads is short money.

Imo000

For $700 how much of the heads are they going to refurbish? Are they changing the guides?