Forged Pistons and Rods in the EVO?
May 16, 2003, 01:37 AM
#1
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Forged Pistons and Rods in the EVO?
Does the EVO have forged internals?
One of the major drawbacks of the WRX is the lack of forged Pistions and Rods!
Please tell me that the 4G63 in the USDM EVO has forged internals!
Thanks,
Andy
One of the major drawbacks of the WRX is the lack of forged Pistions and Rods!
Please tell me that the 4G63 in the USDM EVO has forged internals!
Thanks,
Andy
May 16, 2003, 10:08 PM
#2
Re: Forged Pistons and Rods in the EVO?
Originally posted by BADWRX
Does the EVO have forged internals?
One of the major drawbacks of the WRX is the lack of forged Pistions and Rods!
Please tell me that the 4G63 in the USDM EVO has forged internals!
Thanks,
Andy
Does the EVO have forged internals?
One of the major drawbacks of the WRX is the lack of forged Pistions and Rods!
Please tell me that the 4G63 in the USDM EVO has forged internals!
Thanks,
Andy
May 17, 2003, 06:59 AM
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Re: Re: Forged Pistons and Rods in the EVO?
Originally posted by jfh
Forged crank and rods. Pistons are lightweight AC8A (T6) cast aluminum.
Forged crank and rods. Pistons are lightweight AC8A (T6) cast aluminum.
May 17, 2003, 09:03 AM
#5
Not sure if I really believe them, but so far, all the mags claim that the crank, conrods, AND pistons are forged.
Personally, I've noticed that the engine seems a bit noisy when cold, them seems to quiet down after warmup. Cars w/ forged pistons have this trait due to the expanding of the piston, so who knows?
Personally, I've noticed that the engine seems a bit noisy when cold, them seems to quiet down after warmup. Cars w/ forged pistons have this trait due to the expanding of the piston, so who knows?
May 17, 2003, 10:24 PM
#6
Originally posted by Claudius
Where did you get this info from, jfh?
Where did you get this info from, jfh?
It came from our US Evolution Encyclopedia written and compiled by our very own Mark Modaressi.
https://www.evolutionm.net/features/...agenumber=4&s=
Last edited by jfh; May 17, 2003 at 10:28 PM.
May 19, 2003, 12:25 PM
#7
There is no need for the Evo's pistons to be forged. Mitsu has their stuff together when it comes to making pistons for forced induction. They are strong. The ECU does a good job at keeping everything happy. The oil squirters pointed at the piston bases keep things cool.
People have run stock DSM pistons into the 10s in the 1/4mi. They are not the weak point.
People have run stock DSM pistons into the 10s in the 1/4mi. They are not the weak point.
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May 31, 2003, 12:17 AM
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not forged
the pistons in the evo's 4g63 second generation are not forged
and the rods are not forged either, i have built many of these motors and know for a fact that they break easily when you start to reach the range of 350 HP. The Crank shaft is good for around
500 HP but i have not broken one yet at over this,
but with new pistons and con rods the engine 500 HP pluss is easy oh and intercooler upgrade is needed after 20 PSI boost.
the stock pistons and rods were made realy small to save weight
they are very week. for high boosted big turbos,
and the rods are not forged either, i have built many of these motors and know for a fact that they break easily when you start to reach the range of 350 HP. The Crank shaft is good for around
500 HP but i have not broken one yet at over this,
but with new pistons and con rods the engine 500 HP pluss is easy oh and intercooler upgrade is needed after 20 PSI boost.
the stock pistons and rods were made realy small to save weight
they are very week. for high boosted big turbos,
Jun 2, 2003, 02:26 AM
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Re: not forged
Originally posted by marc_pogson
the pistons in the evo's 4g63 second generation are not forged
and the rods are not forged either, i have built many of these motors and know for a fact that they break easily when you start to reach the range of 350 HP. The Crank shaft is good for around
500 HP but i have not broken one yet at over this,
but with new pistons and con rods the engine 500 HP pluss is easy oh and intercooler upgrade is needed after 20 PSI boost.
the stock pistons and rods were made realy small to save weight
they are very week. for high boosted big turbos,
the pistons in the evo's 4g63 second generation are not forged
and the rods are not forged either, i have built many of these motors and know for a fact that they break easily when you start to reach the range of 350 HP. The Crank shaft is good for around
500 HP but i have not broken one yet at over this,
but with new pistons and con rods the engine 500 HP pluss is easy oh and intercooler upgrade is needed after 20 PSI boost.
the stock pistons and rods were made realy small to save weight
they are very week. for high boosted big turbos,
