1997 2.7 V6 head gasket issue
#1
1997 2.7 V6 head gasket issue
I have a 97 accord with a 2.7 v6. After 230,000 miles started smoking real bad. Rebuilt engine and the only problem was that the heads leaked coolant. (severely) check torque and all was good. After warming up the leak was slowed down but not completely. tried stop leak, no help. Leak in from the water jackets to the outside of head. No water in oil. Car runs great but still using coolant. after 5,000 miles removed heads to check. they are flat and the gaskets failed to the outside pretty much all around both heads. Since this is a 2.7 there is not much information on the engine. the gasket was a felpro 9531 PT Perma torque (honda has stopped stocking the factory one). Looking for anyone with knowledge on this issue.
Thanks,
John
1997 accord EX-L 2.7l Automatic
Thanks,
John
1997 accord EX-L 2.7l Automatic
#2
Did you check the heads for flatness w/ a good straight edge and feeler gauge? Only V6 manual I have is for 98-02 V6 engine and specifies 2 mils (0.002 inch) tolerance on warp. This small amount of warp would be easy to miss.
Bolt torque sequence in my 98-02 V6 manual is a 3-step sequence. Perhaps this is an updated torque sequence? See attachment.
Did you check the block for flatness? It's less likely to be out of spec, but I have heard of this problem.
The only head gasket installation I had fail was crude checked w/ ruler straight edge. All other times (3) I had head shaved flat by a machine shop. Too much work to take a chance.
Do you have a shop manual to guide your work? automanualsource.com can provide the 98-02 manual which includes V6 for $22. Better than nothing.
good luck
Bolt torque sequence in my 98-02 V6 manual is a 3-step sequence. Perhaps this is an updated torque sequence? See attachment.
Did you check the block for flatness? It's less likely to be out of spec, but I have heard of this problem.
The only head gasket installation I had fail was crude checked w/ ruler straight edge. All other times (3) I had head shaved flat by a machine shop. Too much work to take a chance.
Do you have a shop manual to guide your work? automanualsource.com can provide the 98-02 manual which includes V6 for $22. Better than nothing.
good luck
#5
This is what I did with mine..
Pulled head
cleaned off old gasket
Drew all over it with a black sharpie
Used a piece of marble with fine grit sandpaper stuck to it and slide it over it back and forth, seeing where my low spots were
my marble with sandpaper on it
Until I got to this point. Then I marked on it again with sharpie and checked it all came off evenly. Then got a feeler gauge and a metal ruler and checked for gap
Pulled head
cleaned off old gasket
Drew all over it with a black sharpie
Used a piece of marble with fine grit sandpaper stuck to it and slide it over it back and forth, seeing where my low spots were
my marble with sandpaper on it
Until I got to this point. Then I marked on it again with sharpie and checked it all came off evenly. Then got a feeler gauge and a metal ruler and checked for gap
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