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Join Date: Oct 2006
Location: Laguna Vista
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Hey Nize,
Yup good to be back

Well I think I have ordered 3 of them (Mylar O ring seals) so we will see.....
Also think I either have a leak in the AOS or it may just be spillage from klutzy oil pour when filling. So will take a look at its bottom end.
took the 90 deg hose od the top of it and it had in it what I suspect are left over of the original seals maybe ??
See pic
Thanks Sox

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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-13-2018, 01:54 PM
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After reading about removing the AOS (need to take out turbo first),
my reaction is "I don't wanna !!"
Sox
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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-13-2018, 02:11 PM
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This looks like a part of the coolant circulation into the cabin heater ???
It was just loose next to the fire wall. See pics.
Thanks Sox


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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-13-2018, 03:28 PM
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Umm, that would cause a "small" coolant leak.... That heater valve has been known to fail, and they aren't too expensive if you just want to replace it along withe the hoses.

Heater control valve is the name.
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'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG
3120 lbs, 256 RWHP, 15 psig boost
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1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - WIP
Old 05-13-2018, 05:18 PM
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Sorry by loose I meant not anchored or mounted in any fashion, still had hoses on both ends and the vacuum actuator.
Heat and air work in the car, I was just surprised to see it hanging loose.
Thanks for the I.D on the part.
Sox
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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-13-2018, 06:16 PM
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Had to happen but turned out there is a use for those easy out thingies. I have just broken them before but it worked this time. The bolt got stripped in the camshaft cover housing, but came out phew!
Sox

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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-14-2018, 10:33 AM
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Got the cam cover off. The gasket came off easy where it was leaking oil, the rest is mostly off, but is stuck in places.
Any one have a magic bullet to get the gasket off these spots without scraping the metal ?
thanks Sox
Ps. The M8 X 35 pan head bolt in the cover that was stripped, it costs $5.00/per from hosts here at Pelican !!


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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-14-2018, 12:30 PM
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Just get some M8x40mm bolts and cut/grind them down to 35mm...

I used a dull metal putty knife to clean up the gasket, working carefully. Finished it off with some Simple Green before putting the gasket on dry.

Looks like good progress.
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'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG
3120 lbs, 256 RWHP, 15 psig boost
NASA/PCA Instructor
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - WIP
Old 05-14-2018, 05:50 PM
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Thanks Keith
I did decide to do belts and rollers, but not the water pump. As you said I am in there already.
So I have belts and rollers full set that have 30k on them. I inspected them, the belts look fine no fray, marks or any thing. The pulleys and roller move freely and smooth.
If any one wants them I can send them, just pay the postage.
Sox
Ps. There is a fasteners specialty store here that may have the right size. I assume that the hardness is not that important grade 5 versus grade 8 ?
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1986 951"MADDOG" black with maroon interior
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Last edited by soxnail; 05-15-2018 at 04:04 PM.. Reason: more info
Old 05-15-2018, 08:11 AM
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you can also use a scotch brite dish sponge to scrub the remains of the old gasket off, but use the blue one. do not use the green one as that will scratch the aluminum.
https://www.stain-removal-101.com/scotch-brite-no-scratch-sponges-review-and-uses.html
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Old 05-15-2018, 02:39 PM
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Thanks Nize will get some...glad its as simple as blue versus green rather than aqua versus sea foam
pics of the process as it goes.



before clean up rear tower.




After cleanup.




reinstalled on the cam housing.
Sox
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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-15-2018, 03:59 PM
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Started on the distributor side no real issues....
The bolt holding the retaining collar takes a 8mm socket on mine as opposed to 10mm as the write up says.
The shop the car used to go to had used "Persuasion" on the connector piece see pic:



You can see the scratch marks on it. I wrapped soft iron shim around it to pull it out so as not to further gouge the surface.



Ditto for the outer sleeve.



The spline bolt was not going to make an other extraction/insertion.



Now for a question:
What is the purpose of the small seal (red) that goes in the housing ? it is blocked on the distributor side and is mated to the main cam housing on the other. It looks like just a plug would have worked or even no hole there ? or am I missing some thing ?
Any elucidation would be greatly appreciated. Pics below.
Sox



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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-16-2018, 09:21 AM
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One more the "infamous onion skin O ring" I presume.
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All stock with shimmed WG
Old 05-16-2018, 10:16 AM
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Looks like you are living the dream of 944 ownership - brings back memories.....

Some of these parts come directly from the 928, since in many ways the 944's engine is "half a 928". That stupid filler gasket is one of those things.

I have heard that using an impact on that camshaft bolt works well, believe it or not.

And in answer to Peter's question on what the onion skin gasket does, it seals oil from leaking out between the camshaft and the collar that goes on it and the outer seals run on.
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'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG
3120 lbs, 256 RWHP, 15 psig boost
NASA/PCA Instructor
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - WIP
Old 05-16-2018, 01:24 PM
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Yup the dream
Actually I have had this car as I mentioned earlier since new, it and I have gotten old and gray together. I have had more fun in this car then should be allowed
So its time to learn the one part of it that always went to a shop.
Any hoo the bolt came out with "persuasion" I like that term in case you can't tell
I don't know if there is any one on this forum old enough to remember that old tv show 'The Persuaders' Roger Moore and Tony Curtis, but I have liked the term persuasion since then.
Distributor side back together and the whole thing cleaned up.



Here are the parts that went into it...




Couple of things:

Using 6 ft/lbs of torque on the 3 bolts holding the back of the distributor housing (M6) stripped the thread in the aluminum cam cover block....Used a helical to fix that only tightened to 5 ft/lbs on the other 2.

I applied Locktite red to the thread of the connector retaining bolt (M5 x 10 mm) the set screw type in the collar.
Lots of simple green and 3 tooth brushes later it ready to go on, but I am still struggling to get the all of the old gasket off without damaging the aluminum surface.






Sox
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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-16-2018, 02:23 PM
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One more thing Clark's says use bearing grease on the gasket on the rear tower, I have always heard to put gaskets on clean and dry, Mine is on dry, but if the brain trust thinks it should have grease on it I can take it off at this point easily.
Thanks
Sox
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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-16-2018, 02:26 PM
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Got the rest of the parts in !!
What do y'all use to de-gunk the engine, to clean up grease/oil and caked on gunk ?

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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-25-2018, 04:37 PM
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That baked on gasket is tough to remove. I ended up using a roloc disk on mine. I had some fine scratches from putty knife/razor I was using, but they polished out.
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Old 05-27-2018, 02:52 AM
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Going to try scotch brite blue first and a lot of elbow grease, if not then onto roloc.
Does any one have an answer to my question about the small 'O' ring ?
Thanks Sox
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"Little problems always come back and bring bigger friends with them".
1986 951"MADDOG" black with maroon interior
All stock with shimmed WG
Old 05-27-2018, 02:02 PM
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I answered it, Sox.

It is an artifact of using the head from the 928 on the 944.
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'88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG
3120 lbs, 256 RWHP, 15 psig boost
NASA/PCA Instructor
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - WIP
Old 05-27-2018, 02:58 PM
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