I have approx 15k miles on my 2.4L block. Would this be ok to use the forged pistons on? Or, should I just bore it .020. The bore now looks to be in good shape. best time so far 14.3 @ 101.1mph(no traction) www.cnnmotorsports.com
#81464, "RE: Motor Bore Question" In response to Reply # 2
I'm sure you could get away with just honing it. However, if it were my engine, I would shell out the $150 to get it bored 0.02" and honed. In the grand scheme of a performance hybrid engine, that's chump change and a small price to pay for peace of mind.
Corbin
'95 ESI-T Now with more power and fewer leaks
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#81465, "RE: Motor Bore Question" In response to Reply # 0
Well theres no replacement for displacement right? I would go ahead and get the bigger bore. I have thinkin about borring my 98 RS then completely rebuilding the motor internal around the new block size but im not sure yet I want to find a monster turbo first so i can spec my motor rebuild to handle the big boost.
#81466, "RE: Motor Bore Question" In response to Reply # 4
Originally posted by 2fastdsm Well theres no replacement for displacement right? I would go ahead and get the bigger bore. I have thinkin about borring my 98 RS then completely rebuilding the motor internal around the new block size but im not sure yet I want to find a monster turbo first so i can spec my motor rebuild to handle the big boost.
Just so you know, there isn't enough iron around the bores to overbore a 420A enough to significantly increase displacement. .020, .040, you'll not see any gains from. at most, you MIGHT be able to get a 2.1L out of it, and you'll have such thin cylinder walls you'll have temperature control issues.
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'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#81491, "RE: Motor Bore Question" In response to Reply # 6
Ahhh hell with boring then. I will put that money towards something to make the car faster. The stock bore is mint and will be the strongest. A light hone and I will be on my way. best time so far 14.3 @ 101.1mph(no traction) www.cnnmotorsports.com
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