standard pistons/rods
#1
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Thread Starter
standard pistons/rods
Hi guys my car is a 97 uk turbo2000 wagon and i am going to rebiuld my engine after xmas. If i used standard pistons and rods to build it what is the most bhp that can be got out of them. i want to get to 300 bhp could they handle that?
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#8
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Thread Starter
was wondering to use original parts and to just buy new rod bolts and big ends and all the other parts and really good gasket set and a clean up
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#9
Scooby Regular
iTrader: (1)
It would be prudent to change the rods for the later 'bolt' type rods instead of keeping the early stud and nut type.
If you fit new studs and nuts to your original rods, they will need resizing before fitting.
The later rods are capable of running 400 so it makes sense to fit them if the build budget will allow it.
Mick
If you fit new studs and nuts to your original rods, they will need resizing before fitting.
The later rods are capable of running 400 so it makes sense to fit them if the build budget will allow it.
Mick
#12
Scooby Regular
iTrader: (13)
Unfortunately, my STi 5 lump is std. with c.50k on it.
Last edited by joz8968; 07 December 2011 at 06:45 PM.
#13
Scooby Regular
iTrader: (1)
Mick, I think you're getting muddled up with my previous 93 WRX - it was that car which had STi v.3/4 pistons and Hawk STi rods when it was built. So I'm assuming, by necessity, they were the later bolts? Nice for the subsequent owners then!
Unfortunately, my STi 5 lump is std. with c.50k on it.
Unfortunately, my STi 5 lump is std. with c.50k on it.
Picture of the 'nut' type rods (top) and bolt type (bottom)
Mick
#15
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Thread Starter
hi merlin If you fit new studs and nuts to your original rods, they will need resizing before fitting. how do you mean resizing and my original pistons should be ok?. phil
#16
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iTrader: (1)
Because the studs are a press fit into the rods, there is no guarrantee that the big end on the rod will be absolutley round after the studs are pressed in and the cap torqued up.
If it is out of round,then the rod is re-sized by machining a little off the cap face and rod mating face to make it undersize and then honed back to standard size.
Your pistons should be ok if they measure up ok but a set of STi Version 3~4 HF forged pistons would be better than your Cast pistons.
Mick
If it is out of round,then the rod is re-sized by machining a little off the cap face and rod mating face to make it undersize and then honed back to standard size.
Your pistons should be ok if they measure up ok but a set of STi Version 3~4 HF forged pistons would be better than your Cast pistons.
Mick
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