boxsey911

If I may be of help...the engine number is stamped to the lower right of the engine fan. It's difficult to see if you have a full aircon bracket and the compressor in the way. You can just about see the number stamp on mine just up and right of the lug in the pic below:

race911

Yes, there's the engine serial number. The number on the case down on the bottom is merely a casting number.

As I see our original poster is in Portland, you've got Steve Weiner RIGHT THERE. Would be one of the easiest 911 repair recommendations. Ever.

Makmov

Those guy above have it right. I know I looked before I bought to see if the numbers matched, I thought for some reason it was below. Maybe it was that other number you saw by the trans I remember seeing. In any event, sorry to send you on a wild goose chase, and I just looked at mine and could read without moving the compressor out of the way.

M64 05503, pre gasket engine, but has been rebuilt and head gasket were done then.

cobias1

Hey is no prob Mak...if you can just cover the therapist session bill..joking..i did get a bit more old gunk off the bottom case looking for it anyhow, thanks for the pics race and boxsey. we might get a good look at it when they pull the engine soon. do have the aircon bracket in the way so will wait to see when its out and can get a better look at it. called porsche na today and for the other poster that asked about the model number..i recommend doing so as there are 4 recalls out one concerning a universal joint and maybe well worth them looking into. thanks for the help all and hope to utilize ur expertise more in the months to come.

J richard

If you're livin right and you caught it before you actually started getting gasket blowby and notched sealing surfaces you may just need to replace the studs and check things over. Pretty common in wet/salty areas to get corrosion that leads to busted studs. I've done this on two motors with only a partial dissasembly, (lowers with half the stud left is the easiest) new stud and everything was fine. With this many tho I would be expecting corrosion to have taken it's toll and you could have more in the future... Depends on how old/tight the motor is... Give steve a call.

race911

Ha. I just copied his photo. But I could have taken one of the 3.8 in the faux 993RS, and it would look just the same!

Laker

62 M 06657 ~ *****!

sml

62M00918* - July 1990 Build Date

Looks like I missed out.

Is there any significance to the little star at the end of the engine number?

tbennett017

uh oh.. a STAR???

sml

Let me guess .. the star signifies a special RS build of engine numbers?

Makmov

I doubt it, mine has a star like stamp on it too.

crg53

Hi Laker, just noticed your cars birthday and engine serial #, I find it strange that there is such a large difference between yours and mine, which is December 14th 1990 and serial # 62M07209*, unless of cause mine has had a newer engine put in it.

sml

oh well ... worth a try!

cobias1

quick question for you experienced p-files...could out of curiosity and overfill of the oil have caused the headstud breakages that my vehicle has ?

springer3

Not likely. If a cylinder filled with oil, the piston could have hammered the head when the starter first turned the engine. That would be a serious over-fill indeed, following by a long time sitting.

I suspect you are going to see corrosion on the stud, and a fatigue failure starting at a rust pit.