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#1
11-08-2006, 12:59 AM
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freshen short block question,
Just tore down my short block, eveything looks great for 12 years ,
question ,, I have a 80lbs pump ,pressure cold start was 90lbs ,idle was 35-40lbs ,through the traps about 75lbs I know the more pressure is causing drag ,how Hp is estimated to be lost. I want to freshen and go with lighter pistons ,stronger rods and less oil pressure 60lbs. Everything is balanced , I know with new rods and pistons the the crank and everything shouldbe rebalanced, Can just pistons and rods be replaced without rebalancing the crank stock rods/speedpro pistons vs eagle rods/lighter piston or equivalent |
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#2
11-08-2006, 07:15 AM
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I think if you are lightening the RA that much, the crank needs to go in also.
I don't think you'll see much, if any measureable gain by changing to a lower pressure pump.
__________________
Darin '64 Bonneville Wagon (sold) 69 Lemans-All motor (sold) 9.81 @ 136.39MPH |
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#3
11-08-2006, 08:56 AM
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Everything needs to be rebalanced. Your bob weight will change with the lighter components and that weight is what the crank is balanced to.
__________________
74 GTO Bracket/Street car and another 74 for the wifey to race with! 70 GTO 400, 4 spd, #'s matching and a little to nice for me to own. Friendship is like peeing your pants..everyone can see it but only you can feel the warmth! |
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