tilac999

I just came back from looking at it. It's in Hyannis and the seller is a pilot and a very nice gentleman but not a mechanic.

~120K miles, leather interior, seats good, dash and rear panel leather shrunken and warped. Front of engine is apart, all toothed gears very badly worn, especially the oil pump gear. Rear hatch window broken and dent on tailgate where something fell on it. Been sitting under cover for a few years. I went to look for a friend and was prepared to buy but Brian Butler talked me down from the cliff.

BRB-83-911SC

My rationalization was based on the owner's statement that the belt sheared some teeth (worn gears) while the car was driving. Even though he states non-interference in the ad, I think the 85 Euro 16v is interference and this mishap has likely bent some valves. Owner could not verify bent/not bent, so at the least a leak down test is in order after fitting a new belt. This could be a cheap entry (asking $1,000) to an LH Euro for someone with the time, space, tools to pull the engine and fix it up.

RFJ

what happened to the sail to the med?

robot808

Believe he's sailing.

davek9

An 85 Euro IS an interference engine, Dennis and I Assisted Helmut here in the "D" when his WP seized and bent some valves, I don't recall the exact number ~ 4 I think. Helmut pulled the heads with eng in place, replaced all the worn parts up front and all was good.

PS: If it were me, I would have pulled the eng

tv

It's like Sasquatch and the Loch Ness monster, is it an interference engine or not? I still do not think so, Porsche didn't think so, lots of anecdotal stories supporting both views.

tilac999

I guess it depends on the depth of the valve relief cut into the piston. Before '85 maybe OK but '85 Euro sounds like no way.

BRB-83-911SC

This thread has good info on the 84-86 Euro 16v engines, and the changes to the pistons starting mid 84 (starting around page 2).

https://rennlist.com/forums/showthre...ferrerid=34007

I take from this that early 84 16v LH Euros *should* not be interference, and later 84 - 86 *could* be. I have an early 84 with the larger valve releifs, and while my engine was out and belt off you could freely rotate the cams with no valve contact.

The question is, can you do the same with the later 16v Eoros with the smaller releifs?

In any event, carbon buildup can, IMHO, make them all interference.

tv

I think you can and I think it can. ^^



Porsche were no dopes, and the TB instructions in the OM are clear as to when engines became interference and no correction directives were issued in the following years.

tilac999

Carbon can fill those reliefs over the years.....

85euro928

WP0ZZZ92ZFS840646 - '85 ROW. The receipts from the PO say this was (is) an interference engine. At least for the exhaust valves.

brutus

Proves only that he paid for them ! not that they were bent. So many shops have 944 experience and assume the valves are bent. Then when they pull the heads it is difficult to tell the owner You were lucky no bent valves but you owe us $2,500 for nothing ! So put in new exhaust valves it probably could use them anyway and the head gaskets were getting old too.

85euro928

Could be. Also more likely as the PO was a "she", blonde, & born again. Very nice lady but not 928 savy. However, she did say the work was done at her fathers friends shop. (That probably means little too:/ ) BUT, I have noticed that the other work listed on the invoive was completed??? Who knows, I tend to be critical but not cynical, it make life that much easier.

brutus

Yes most people are basically honest just some studies of car repair indicate about 50% of what gets "fixed" was NOT needed or not done or done wrong ! Makes it real hard on the good guys as they try to make an honest living.

85euro928

Yup... and the left bank cam broke 2000 miles after the PO's mechanic fixed the TBF. That's why I wrench myself, if it breaks after I fix it I chalk it up to experience, if it breaks after I paid a "pro" I want revenge!