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The forums opinion the leaking chambers?
I'm helping a friend work his 3.4 engine, while driving it on the race track he heard a exhaust leak. After pulling the motor and popping off the heads this is what we found, It seams either the head studs are old (they are) or they heads were not torqued correctly, ask any question you like to bring light to the situation
  
Last edited by ferdsgt3rs; 12-31-2008 at 09:21 PM.. Reason: better thought |
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12-31-2008, 09:07 PM
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Less brakes, more gas!
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Can you show us a close up of the area you have a ? about. I'm assuming its marked in pink on the second foto, but I cannot make anything out...
Best regards, Michael
__________________
 Michael '82 Euro SC 'Track Rat' 22/29 Hollows, 22/22 Tarrets, Full ERPB F/R, Rennline Tri Brace, Glass bumpers, Pro 2000's, 5 pts, blah blah blah '13 Cayenne GTS |
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01-01-2009, 04:50 PM
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Location: Nash County, NC.
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Looks like the bottom row of studs needs to be steel and the heads may have needed to be flycut.
Anytime you open an aluminum case, change the dilvars or install steel. reminder, the 3.2 gets 15 Ft# then 90 degrees on torque value for the head. Bruce |
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01-01-2009, 05:05 PM
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Leaking motor
There are more close up photos a few lines down under " more pics" I will also download a close up up the cylinders barrels now! the motor was " freshened 6 running hrs ago,The leak was so bad the combustion gas melted the head and barrel ! Keep an eye out for the new pics.
Thanks for the input Last edited by ferdsgt3rs; 01-01-2009 at 08:41 PM.. |
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01-01-2009, 08:38 PM
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Leaking motor Pics
The close ups
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01-01-2009, 08:49 PM
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01-01-2009, 08:50 PM
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01-01-2009, 08:51 PM
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Location: So. Calif.
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30 year old parts tend to be old. That doesn't necessarily mean they're dead. Did your friend notice anything unusual when he removed the head nuts, i.e. were they loose? Were any studs broken?
I don't know. Could be a blown head gasket. How does it look? Could be detonation damage. Sherwood |
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01-01-2009, 11:07 PM
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Studs or ?
cyl. 4,5,6, all had studs with way different heights, All but one combustion chamber was leaking. The head studs were 1/4 turn past snug 20ft lbs max. the rods are stock the pistons are molly ( Light weight) bearings are good. Heads off to the machinist for R&R, its a Funny puzzle.
Will have some re-assembly questions all help from people in th know is appreciated in advance FC |
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01-02-2009, 07:13 PM
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I'm here to cause trouble
Join Date: Mar 2005
Location: CA
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Head studs all had different lengths? There's a clue. There IS a spec for the length of the head stud from the case to the top - I think 135mm. Not sure how much wiggle room you're allowed, but it sounds like that may be the root of your problem.
JB |
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01-03-2009, 11:50 AM
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Yes , the difference in lengths is substantial across the cylindes up to 5mm. We had a Guy who knows his way around an engine look at it today, and I think my friend has a sound plan.
I've just been a fly on the wall / gofer and it's bee a great learning experience. Keep any ideas on re-assembly handy. |
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01-03-2009, 04:08 PM
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Ugly Betty
