Installing forged pistons in 90k ls1
Thread Starter
12 Second Club
Joined: Mar 2009
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From: California
Installing forged pistons in 90k ls1 Would it be possible using the same used crankshaft bearings to install forged pistons, rods and rings.For nitrous/supercharging app.(650 to 700hp.)I'm trying to bypass having to get a new crankshaft, install it and or get the old one machined and then have to get larger bearings.
you dont have to machine the crank or buy a new one, just make all the measurements and buy the appropriately sized bearings and re-use the crankshaft. it would be kind of foolish to rebuild an engine without putting new bearings in it...
also with new rods you will need new rod bearings as well. if youre going through all this work, it would be worthwhile to bring the block to a machine shop to get it at least honed and magnafluxed. that should only be a couple hundred bucks. they can install new cam bearings as well
also with new rods you will need new rod bearings as well. if youre going through all this work, it would be worthwhile to bring the block to a machine shop to get it at least honed and magnafluxed. that should only be a couple hundred bucks. they can install new cam bearings as well
TECH Fanatic
Joined: Sep 2005
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From: NYC
Strip the block and give it to a good machine shop to prep: http://www.sdpc2000.com/details/scog...nter/sun10-901. Then I'd just buy a balanced Compstar/Wiseco rotating assembly with bearings form Texas Speed-- $2300 http://texas-speed.com/shop/item.asp...d=885&catid=88.
I'd just buy a balanced Compstar/Wiseco rotating assembly with bearings form Texas Speed-- $2300 http://texas-speed.com/shop/item.asp...d=885&catid=88.
With this logic can't you just get forged piston rods? Or do you have to get piston heads like the diamond pistons because the stock piston heads give way like the piston rods?
Last edited by TheBlueKnight; Jan 20, 2010 at 01:30 PM.
One of the main reason to get a new crank is to build cubic inches. The stock crankshafts have been tested to a good amount of power. But the rest of engine was prepped by professionals that have had alot of exp doing this very thing. Alot of people buy peace of mind when they purchase a callies or a lunati , etc. You are not JUST buying a name though. You are buying quality as well.
Sometimes people would rather buy a new crank than either chance their stock one, or have to get theirs machined. For quite a few people, turning a crank and using oversized bearings is not an option.
Sometimes people would rather buy a new crank than either chance their stock one, or have to get theirs machined. For quite a few people, turning a crank and using oversized bearings is not an option.
So it seems as though the most cost effective way to forge is piston rods, turning the crank, and over sized bearings. Don't really see a need for diamond pistons since no one has mentioned the stock piston heads failing right? Just the piston rods failing and getting thrown through the block?
Last edited by TheBlueKnight; Jan 20, 2010 at 07:31 PM.
