platinumx6

jdm h23a vtec.

Alright, How much boost and power(whp) can the block hold? I ask each because PSI determins the life if rings and such correct? While whp will determin life of sleeves/rods?

Also, does this motor come with an LSD, i herd it does but i cant find any info to support this.

I would like to boost the motor for 350whp and i plan on upgrading worn parts(ring upgrades?) but keeping the oem rods/pistons and im wandering if this can be done safely/reliably as long as my tuner does a good job. The engine already comes with low compresion.

Thanks in advance.

MJ0LNIR

You'd probably have better luck asking this in the FI forum.

TruSi1

The H23 Is Non-Vtech So Getting 350hp with stock internals and boost is gonna be preaty hard...Boost alone is bad for the motor and by keeping your stock pistons/rods ur just doing more damage

Hawkze_2.3

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TruSi1 &raquo;</TD></TR><TR><TD CLASS="quote">The H23 Is Non-Vtech So Getting 350hp with stock internals and boost is gonna be preaty hard...Boost alone is bad for the motor and by keeping your stock pistons/rods ur just doing more damage
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WTF do you think you're talking about?

H23A is a VTEC engine from various vehicles in other markets than the USDM. Go to the Prelude forum and we have tons of info on this engine, and boost as well, in the FAQs.

Don't boost an H-series until you READ.

platinumx6

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TruSi1 &raquo;</TD></TR><TR><TD CLASS="quote">The H23 Is Non-Vtech So Getting 350hp with stock internals and boost is gonna be preaty hard...Boost alone is bad for the motor and by keeping your stock pistons/rods ur just doing more damage
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thanks hawkze.

Syndacate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TruSi1 &raquo;</TD></TR><TR><TD CLASS="quote">The H23 Is Non-Vtech So Getting 350hp with stock internals and boost is gonna be preaty hard...Boost alone is bad for the motor and by keeping your stock pistons/rods ur just doing more damage
</TD></TR></TABLE>

That's because no Honda/Acura motor was a vtech communications product.

VTEC has nothing to do with how much the block internals can sustain. Boost tuned is NOT bad for the motor and PLENTY of people run boost on stock internals and don't do any more damage to their engine than if they were daily driving it.

EDIT:
Just think logically, if boost was bad for engines, why would VW, 60% of European only sold cars, trucks, tractor trailers, etc. all run turbos or turbo diesels?

@ OP: I think what you're referring to by the rings and such going faster based on PSI is how much the turbo bumps the compression ratio? In which case it's variable on the compression ratio it creates, not the psi of the turbo.

Felliph3

The udsm prelude Si 92-96 i beleive are non VTEC.Theyre the H23A1,JDM H23A is VTEC.

platinumx6

Felliph3, i AM referring to the jdm h23a engine in the awd accord wagons. DOHC vtec(with no H )

thanks Syndacate, i also just found a footnote on wikipedia saying the engines comp. is around 10.6 which was a lot higher then i thought it was looking at the usdm h23. Im having trouble finding a lot of info, especialy when i search people referr to their frankenstein h23/vtec's as such with just h23a and no number!