mark kibort

those real nice! I wish i would have bought that one instead back in the day!

GlenL

Mark is my hero. Again.

mark kibort

You are getting more troll-like with age.....

GlenL

I was fairly serious about the frugal nature of your post. But... Thanks for noticing.

mark kibort

I cant tell when you are joking or serious!

dr bob

Mark--

Shirley Somebody has the later one one available in the area that you can borrow. Mine sits in a tool bin 99.99% of it's life, as I'm sure most do. You'll only need it for a day or two, right?

Call Shirley.

Jerry Feather

Seems to me that I recall a thread on here some time ago about modifying the early two hole lock to work with the later cars. My luck at searching is usually bad.

P.S. I found the thread and bumped it for you, Mark.

Mrmerlin

this will make it easier to search

https://rennlist.com/forums/928-foru...2v-to-16v.html

mark kibort

Thanks ! Bob, very nice of you! I just thought that the part was big enough on the flange to do a quick drill to make it universal. not enough there , so no go.
we ended up borrowing from my "sponsor" Hahahah, CT automotive in Campbell. great guys and know the 928 well

mark kibort

Just finished up the timing belt job! wow, really easy when you dont replace the water pump... water pump felt brand new , no way was that thing coming out.
hardest part was the dirt.

tension was a little on the loose side, we tensioned a couple of years ago when Billl ball helped with the cam alignment with Porken tool.

both cam pulleys were slightly retarded> ( not timing, the pulley position compared to marks) with new belt, timing of the pulleys were slightly more advanced. almost right on the marks. (i would say 1/4 tooth diff)
how does that relate to cam timing. has anyone measured cam timing, before and after belt change to see if that amount of position change effects cam timing to where it should e re-adjusted.

pop the alternator/powersteering pump console back on , put on the covers, replace fans and hose and done! easy peeezzeee.

dr bob

Guessing where the cams end up based on gear position is fruitless, especially since they were dialed in previously using the Porken tool. Put the gears back in the same relative position you found them, and they will be in the most correct position with the new belt.

"Testing" the water pump by feel? Really? Yeah, sure, I'm sure it's fine too. Right. Felt brand new... Since you had a brand new one there to compare with for diagnostic 'feel', why didn't you just install the new one? You truly amaze me sometimes.

mark kibort

you are being a little "jerk-ish" bob... common. who has one of the most reliable porsches around.. I think i make some good decisions, based on experience. I have changed the pump on my perfectly good pump , only to have the pump impeller fall off the shaft or even leak (two times) 'dont hate me because I'm playing the odds here. when the pump goes bad, i change it. when it is ok, and by the way, ive felt many water pumps. when they are very stiff with a little resistance, vs free wheeling, its " like new" in my book.

and, you didnt read the title of this thread... "my friend's.........."... so this friend, cant afford the new pump and doesnt do this kind of work himseflf...yet. (im training him) so, we left the old pump in there. now, if he blows a pump, the entire engine doesnt need to come apart, he can just change the water pump some day in the next 5 -10 years!

Now, you try and telll me that i should put the gears back in the same position that i found them? try ? really? Bob, there is no other way to do it. what do you think, im going to put the gears in a position with the new belt that is a tooth off? of COURSE i put the belt on the pulleys on the same spot. but as you know, the pulley and the "notch" will not always be dead on, especially if someone has shaved the heads, right????
So, my question is that when you put on a new belt, the position is sometimes 1/4tooth different. i guess you could map out the 1/4tooth to a degree and figure out how much the belt changed the timing, right? in this case......
48teeth equals 7.5 degrees, so 1/4 tooth change might equal about 1.25 cam degrees, or 0.6 crank degrees, right. so, not enough to worry about i would imagine. PLUS, coming from a car that actually ran from Devek with one cam at 8 degrees and the other at 0 before Bill and i did the cam timing with the porken tool

Now, back to his car... funny, the belt looked new too. obviously, 10 years old, so it was time, but i dont think the miles were over 20-30k. do you think we are a little too concervative on the belt change cycle time? Ive never pulled off a timing belt that looked even remotely worn or cracked in anyway in all the belts ive taken off. (except the 79.... well, that belt was broken and wrapped around the flywheel! )