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-   -   Timing and Cam (https://www.germanautoforums.com/forum/porsche-944-9/timing-cam-3773/)

PorscheDoc Jul 24, 2007 09:47 AM

RE: Timing and Cam
 

ORIGINAL: zorin

Hi Tarheel,
Did you have to take out the 32 mm bolt in front of the camshaft gear to take the camshaft housing off? (your lat picture)


No you do not.

PorscheDoc Jul 24, 2007 09:49 AM

RE: Timing and Cam
 
Also, you don't have to remove the exhaust to pull the head. Disconnect the headers where they mate up to the rest of the exhaust, and pull the head with the headers attached.

tarheel24 Jul 24, 2007 05:52 PM

RE: Timing and Cam
 
Like Porschedoc said, you dont have to remove the 32mm bolt to remove the camshaft...

I am in the process of pulling the exhaust anyways, because if I am to replace the head, I will have to pull the exhaust from the current head so that I can put it on the new one. Or if I was to have that one rebuilt, I would still have to remove the exhaust.

The exhaust studs are coming out quite easily actually, I am having much more trouble with detaching the header from the rest of the exhaust. I have one bolt out (of the 6), one head is sheared off, and the remainder seem to be stipped... AND there is an impossibly small amount of space to work two wrenches in...I am contemplating just cutting the bolts and replacing them all when I reattach it. Any suggestions?

btw, thanks Porschedoc and Zorin, having you guys to turn to makes this project significantly less stressful.

tarheel24 Jul 25, 2007 02:54 PM

RE: Timing and Cam
 
Removed the exhaust from the head, and finally pulled the head out. Waiting on parts now... in the meantime, contemplating working on the body, the wheels, and perhaps cleaning the camshaft and intake manifold. Anyways, here are pics:
http://inlinethumb28.webshots.com/38...600x600Q85.jpghttp://inlinethumb57.webshots.com/45...600x600Q85.jpghttp://inlinethumb29.webshots.com/41...600x600Q85.jpg

PorscheDoc Jul 25, 2007 03:22 PM

RE: Timing and Cam
 
Ouch, those are some bent valves alright!

tarheel24 Jul 25, 2007 04:46 PM

RE: Timing and Cam
 
yeah, i didnt have to think too long about how bad the valves were... 2 mins after removing the head, i ordered a rebuilt one. haha

zorin Jul 25, 2007 08:46 PM

RE: Timing and Cam
 
What I did with the exhust bolts was that I sprayed a good amount of Gunk's Liquid Wrench, then I tapped it a few times it with small hammer, waited over night and Voila! With very little force and using am open-ended 13 mm wrench, the bolts came off.

Thanks for the photos. Very helpfull. I am going to take the head off tommorrow

zorin Jul 25, 2007 09:31 PM

RE: Timing and Cam
 
I guess youcan not just replace the valves without a lot work on the valve seats? Does the re-built head come with valves?
Are you going to replace the water pump while you are at it? I recommend you do.Also, in my case, I am going to replace the fuel injections seals as well.

zorin Jul 25, 2007 10:49 PM

RE: Timing and Cam
 
Is there any damage to the pistons? Now that you are looking at the bent valves, is it clear why the engine would not rotate? If a bent valve was blocking a piston from going up then there must be a visible contact mark on the piston.

PorscheDoc Jul 26, 2007 07:43 AM

RE: Timing and Cam
 
Yes, with those valves, there are going to be some smiley face marks on the pistons.


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