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Replacing valve stem seals

 
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radarguy

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Since: Apr 29, 2005
Posts: 2



(Msg. 1) Posted: Fri Apr 29, 2005 3:55 am
Post subject: Replacing valve stem seals
Archived from groups: alt>autos>toyota (more info?)

Hey guys, I need a recommendation. I'm replacing the valve stem seals
on a 92 Corolla 4A-FE twin cam engine without removing the head. I am
using a compressor to hold the valves closed. Question one is what
pressure is recommended? Question two is should I put each piston at
top dead center for each set of valves?
Thanks,
Russ

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user1676

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Since: Jan 02, 2005
Posts: 795



(Msg. 2) Posted: Fri Apr 29, 2005 5:55 am
Post subject: Re: Replacing valve stem seals [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

radarguy wrote:
 > Hey guys, I need a recommendation. I'm replacing the valve stem seals
 > on a 92 Corolla 4A-FE twin cam engine without removing the head. I am
 > using a compressor to hold the valves closed. Question one is what
 > pressure is recommended? Question two is should I put each piston at
 > top dead center for each set of valves?
 > Thanks,
 > Russ

Put the piston of the cylinder you're working on at TDC. Lock the
crankshaft securely. Personally, I'd charge the cylinder with at least 50
psi. But you have another problem. The valve spring compressor has to reach
down into the lifter bore without damaging the bore walls in any way.
Frankly, I'd pull the head in this case.

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radarguy

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Since: Apr 29, 2005
Posts: 2



(Msg. 3) Posted: Sun May 01, 2005 10:55 pm
Post subject: Re: Replacing valve stem seals [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

For any interested it was not that big of a deal to get to the seal if
you have the right/adequate tools. I just happened to have had a
medical type of twezzers that was perfect for pulling out the old
seals. No problem with damaging the bore walls. Just a tedious job
after removing timing belt and cams.
Best wishes to all and thanks for the support. BTW 50 PSI was just
right. Could have been a little higher as some of the keepers were a
little stuck but they came free.
Russ

On Fri, 29 Apr 2005 05:18:32 GMT, "Philip"
wrote:

 >radarguy wrote:
  >> Hey guys, I need a recommendation. I'm replacing the valve stem seals
  >> on a 92 Corolla 4A-FE twin cam engine without removing the head. I am
  >> using a compressor to hold the valves closed. Question one is what
  >> pressure is recommended? Question two is should I put each piston at
  >> top dead center for each set of valves?
  >> Thanks,
  >> Russ
 >
 >Put the piston of the cylinder you're working on at TDC. Lock the
 >crankshaft securely. Personally, I'd charge the cylinder with at least 50
 >psi. But you have another problem. The valve spring compressor has to reach
 >down into the lifter bore without damaging the bore walls in any way.
 >Frankly, I'd pull the head in this case.
 >
 >> Stay informed about: Replacing valve stem seals 
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