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Location:
cebu city, philippines
Registered:
September 2004
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replacing valve seals
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Sun, 09 October 2005 03:34
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i have a 4age bigport head and i was just wondering if it is possible to replace the valve seals without removing the cylinder head?
how?
thanks and more hp.
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Location:
Canberra
Registered:
July 2005
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Re: replacing valve seals
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Sun, 09 October 2005 03:50
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yes, it's possible, but from all accounts it sucks. Do a quick search. This was discussed about a month ago. Basically, it'll be quicker, easier and safer to do it with the head off.
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Location:
Canberra
Registered:
February 2004
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Re: replacing valve seals
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Sun, 09 October 2005 13:46
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Theres a valve that you can fit in place of the spark plug that allows you to keep pressure on the valves with an air line, they aren't too expensive but I don't know how good they are.
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Location:
tas
Registered:
June 2002
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Re: replacing valve seals
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Mon, 10 October 2005 02:50
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Yeah on my compression tester i took the adaptor off it (spark plug thread on one end) and adapted it to an air compressor.
This trick does work, but there are times when you have a hard time building enough pressure to hold the valve up with enuf force to press the springs down. You have to add oil down the plug whole sometimes and rotate the valves around to get that sealing happening again. Very frustrating i tell you. But not impossible.
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Location:
Brisbane
Registered:
May 2002
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Location:
Canberra
Registered:
February 2004
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Re: replacing valve seals
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Mon, 10 October 2005 12:35
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A wise man once said to me.
"When you open a 25 year old engine and finish with any less then a complete rebuild then your doing well. I when to do a set of valve seals on my old 18 r and ended up after chucking in about 500 bucks worth of parts. I was pissed, people cant give these engines away but I needed the car for a daily driver.
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