sprfrkr

Excellent diagnosis. The gear bolt was indeed only on by a few threads and was likely the cause of the breakage.

Imo000

Deleted duplicate post

PorKen

Bolt was probably loose because the cam was broken...due to a crappy high-maintenance tensioning system.

Imo000

Put in a replacement camshaft and fire it up.

sprfrkr

Going in Craigslist for $3,500 as is. If I don't get that in two weeks, then I'll do the cam.

Imo000

You can get a camshaft for really cheap (the '84 US cams are dine a dozen and are not in demand), the few gaskets to do the job are not expensive either. Allocate 10 hours to confortably do the job and you are back in bussiness.

sprfrkr

I did a search, but not much in the way of write ups on replacing the cam shafts or parts needed.

Imo000

Look for head gasket replacement threads on 16V engine.

docmirror

Do the cam, put it back on the road then sell if you want. Not too hard a job, but getting the cam cover on is fussy.

We'll advise if you post up here. A non-driving 928 is a very hard sell.

sprfrkr

I'll continue the tear down part and see where it lands me.

"Now, where did I put that SBC...?"

worf928

Yup. A second set of hands really helps getting the cam tower on.

100% agreement. It's not that big of a job on a 16v.

worf928

So, both of you are jumping on me for recommending a procedure from the WSM as opposed to ignoring it?

Great. Like I said ...

... I don't care what the answer is because at 45 BTDC you can spin'em around all day long. I'm typically not trying to justify deviating from a WSM procedure, so that was speculation.

Why do I need to defend the WSM procedure? Let's turn the tables. Why don't you two speculate as to why the WSM recommends 45 BTDC for 32v engines?

What does fastener torque have to do with this?

Last, but not least, I feel bad for hijacking the OP's thread with this.



sprfrkr, there's a WSM procedure for removing the cam tower for 16v engines that starts on 15-1. It's not overly verbose but the diagrams and tables have useful bits in them.

Feel free to use it. Or not.

docmirror

Not jumping on your personally, just an alternate method.

Does the 45deg work? Yes, of course. Is it the only way? No, certainly not.

For the novice, and doing an interference engine, I agree with you, do it at 45 the first time. Anyone with a modicum of mech skills, and anyone doing a non-interference, just do it at TDC.

Fell free to use it, or not.

Imo000

Not even close. That bolt wasn't tightenned, that's all.

Imo000

Here's my take why the WSM uses the 45/mark for timing belt change: So that dummies can spin the cams all day long for no reason what so ever.