500 HP What valve springs to use?
09-20-2005, 08:31 AM
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500 HP What valve springs to use?
I have a 1999 Formula Fastech with 500 HP motors. Have always heard that after a few hundred hours that valve springs start breaking. I'm pulling heads this winter, what is best springs to put back into motor. Any suggestions?
09-20-2005, 09:06 AM
#2
MarineKinetics
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Re: 500 HP What valve springs to use?
Dean,
The Crane replacement is Part # 99896. Depending on your lifters and installed ht. you can also use the Isky #8005/8205 (upgrade S/SP series) or the K-Motion 850 with good results.
Bob
The Crane replacement is Part # 99896. Depending on your lifters and installed ht. you can also use the Isky #8005/8205 (upgrade S/SP series) or the K-Motion 850 with good results.
Bob
09-20-2005, 09:07 AM
#3
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Re: 500 HP What valve springs to use?
Originally Posted by dean brown
I have a 1999 Formula Fastech with 500 HP motors. Have always heard that after a few hundred hours that valve springs start breaking. I'm pulling heads this winter, what is best springs to put back into motor. Any suggestions?
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