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> Engine's out again, problem found..., previous post about compression leak..
Mike D.
post Dec 9 2004, 12:04 AM
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OK, It runs now, and pretty good too!
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So, this past weekend I dropped the 6 to look for a compression leak on the number three cylinder. As soon as the cooling shroud came off it didn't take long to find it.

It doesn't look too bad and now I will finally know for sure what pistons and cams I have. Also have to take care of an oil leak on the front somewhere. (or rear depending on what car or book (IMG:style_emoticons/default/smile.gif) )

Check it out.


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Mike D.
post Dec 9 2004, 12:05 AM
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OK, It runs now, and pretty good too!
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here's the close up #3


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Mike D.
post Dec 9 2004, 12:06 AM
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OK, It runs now, and pretty good too!
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compared to the others


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cnavarro
post Dec 9 2004, 11:33 AM
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Is that a 2.0? See the nice rusty barrels :-)

Charles Navarro
LN Engineering
http://www.LNengineering.com
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Series9
post Dec 9 2004, 12:22 PM
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Wow. I thought it was the head gasket, but damn. Well, get in there...
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cnavarro
post Dec 9 2004, 12:26 PM
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If it is a 2.0, that "head gasket" really doesn't help seal against that level of leakage, it's just more to reduce the combusion by-products getting blown into the stale air heat, or at least that's what I was told by an engine builder who does lots of 2.0 race engines.

Charles Navarro
LN Engineering
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J P Stein
post Dec 9 2004, 02:40 PM
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QUOTE(cnavarro @ Dec 9 2004, 10:26 AM)
If it is a 2.0, that "head gasket" really doesn't help seal against that level of leakage, it's just more to reduce the combusion by-products getting blown into the stale air heat, or at least that's what I was told by an engine builder who does lots of 2.0 race engines.

Charles Navarro
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Yes, the head gasket of a SB chebbie won't seal that level of leakage, either. It's just more there to keep the combustion products out of the water jackets. I read this somewhere, but may have lost something in the translation.
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sixnotfour
post Dec 9 2004, 03:10 PM
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Unless it has to be 2.0 , Get some 2.2-2.4 heads and cylinders.gotta have 2.2 pistons for comp. if its short stroke still
Bigger valves, better head gasket ,more CC's

Mag case witth 66 dated heads, its been around . mag late 68 (IMG:style_emoticons/default/beerchug.gif)
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Mike D.
post Dec 9 2004, 04:50 PM
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OK, It runs now, and pretty good too!
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Case is a 1970 2.2, everything else is earlier. I'll post more pics this weekend after the heads come off. And if they are still 2.0 p/c's, then 2.2's will be going back on.

A couple of things bug me about this leak. Two different Pro Porsche mechanics diagnosed the noise as something completely different. One of the guys here that told me it might be a vac leak (closer). It was the very same day (the last so cal fun run) that it blew out for good.
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sixnotfour
post Dec 10 2004, 05:20 AM
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Maybe it still has 2.2 Cylinders and someone cut the heads to accept the 2.2/2.4 stlye cylinders and did a poor machining operation. Heads have different thinkness. (blown head gasket)

Kinda scarey about the diagnossis you got.
Know you'll know what you got.
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Kerrys914
post Dec 10 2004, 09:40 AM
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Dear, the parts I just sold paid for that part ;)
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Mike, do you have any rubber vibration isolation pieces between the engine mount bar and the body mount?

Have any photos?
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Mike D.
post Dec 10 2004, 01:43 PM
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OK, It runs now, and pretty good too!
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QUOTE(Kerrys914 @ Dec 10 2004, 07:40 AM)
Mike, do you have any rubber vibration isolation pieces between the engine mount bar and the body mount?

Have any photos?

I'm using the stock 911 enging mounts. They are round with a rubber center similar to the 914 Trans mount. (but not)..
They work great, and fit perfectly in the 914 engine mount space. see pic...


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Root_Werks
post Dec 10 2004, 03:09 PM
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Yep, I am using the same mounts on the front of my 914-6 with a cross bar. Kerry, make sure you also get the big washers that go on top of these. They fit and work great. Like they were made for the 914. (IMG:style_emoticons/default/biggrin.gif)
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Kerrys914
post Dec 10 2004, 07:21 PM
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Dear, the parts I just sold paid for that part ;)
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Do the washers come withi t or are they listed seperatly? I see the mounts listed on PParts..I'll check for the washers too.

Cheers
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Mike D.
post Dec 12 2004, 11:33 PM
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OK, It runs now, and pretty good too!
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got the heads off today. The head gasket was totally blown out of one corner. the engine also had two different brands of head gasket. What the?? It's also a confirmed 2 liter. 80mm p/c's. Valves: intake 39mm, exhaust 35mm. So nothing special there. I pulled out one of the cams to check part number, and I'm not sure what I've got maybe someone can shed some light. Part #901.105.139 OR... I found the number on this carquip web site and it says 911L, but I did not find anything listed as 911L in Bruce Andersons book. I have 3 distributers, T, E & S, and need to know which one is best suited to this cam.
I also found lot's of carbon, probably more than I should have.. <_<

check it out...
-Mike D.


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Mike D.
post Dec 12 2004, 11:35 PM
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OK, It runs now, and pretty good too!
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close up pistons


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Mike D.
post Dec 12 2004, 11:36 PM
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OK, It runs now, and pretty good too!
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different head gasket


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Mike D.
post Dec 12 2004, 11:37 PM
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OK, It runs now, and pretty good too!
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inside the heads...


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Mike D.
post Dec 12 2004, 11:38 PM
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OK, It runs now, and pretty good too!
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the cam, can sort of see the part number.


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Aaron Cox
post Dec 12 2004, 11:39 PM
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mike..it sounded good on the funrun! sorry to see it apart (IMG:style_emoticons/default/sad.gif)
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