Earthworm Jim

I don't know much about turbos because I've been N/A my whole life. I picked up a K20A2 and I'm trying to by a RevHard turbo. Here's my question, it's about compression, I was told that the stock compression is way to high and for me to bring it down to 9, is there any info on this. I've searched and got nothing.

boosstboy

it gets complicated in detail, but usually higher compression on boost will need higher octane gas and a stronger motor(built) or it will burn up fast. lower compression will allow more boost on pump gas a can be done on a better safety margin. alot depends on turbo size for the amount of flow, more flow equals less boost same power. lowering your compression and putting in forged pistons and rods in is always good, but you can turbo the motor in stock form.

T4eg

all depends on power u want to make, if only want 300-350 u dont have to touch anything.

Earthworm Jim

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosstboy &raquo;</TD></TR><TR><TD CLASS="quote">it gets complicated in detail, but usually higher compression on boost will need higher octane gas and a stronger motor(built) or it will burn up fast. lower compression will allow more boost on pump gas a can be done on a better safety margin. alot depends on turbo size for the amount of flow, more flow equals less boost same power. lowering your compression and putting in forged pistons and rods in is always good, but you can turbo the motor in stock form. </TD></TR></TABLE>

So should I get forged pistons and rods although I'll primarily be stock or should I leave the motor as is? I still want to be able to rev till about 7 or 8 but that wouldn't be safe with stock internals right?

Earthworm Jim

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by T4eg &raquo;</TD></TR><TR><TD CLASS="quote">all depends on power u want to make, if only want 300-350 u dont have to touch anything. </TD></TR></TABLE>

I want to daily drive on about 5psi but good power is a must. I was guess that I would bring down the compression and built the internals slightly. That way I could still get a decent sized rev out of it but not have to build the motor too much. Am I on the right track?

boosstboy

if all you want to push is 5psi you will be fine as long as the tuner knows what their doing. what size turbo? there are so many horror stories of people getting their cars tuned and the motor blows because a lack of tuning knowledge on the k motors versus the b series. just remember the more you push or romp on the car the more stress your exerting on the stock components. forged parts are only as good as the tune. no neccesary but nice to have are egt, afr gauges, boost is a must so add those into your budget. i currently run boost and afr. soon to get an egt gauge.

Earthworm Jim

Here's a look at what I'm planning on picking up. It's either a stage two or a stage one, it doesn't take much to make me happy:

http://www.showstoppersusa.com...d=127

boosstboy

your k is going into? eh=eg? i would probely piece together a kit together for it cheaper and your get the parts you want and need to work for your swap.

Earthworm Jim

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosstboy &raquo;</TD></TR><TR><TD CLASS="quote">your k is going into? eh=eg? i would probely piece together a kit together for it cheaper and your get the parts you want and need to work for your swap.</TD></TR></TABLE>

K20A2 in an EP3.

boosstboy

ok, i saw eh in sig ya that kit should be fine.

Earthworm Jim

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosstboy &raquo;</TD></TR><TR><TD CLASS="quote">ok, i saw eh in sig ya that kit should be fine.</TD></TR></TABLE>

Yeah, I'm still in the squad but I bought an EP, lol.

build the internals slightly though right?

blinx9900

i know this is not relavent to the actual question but i just thought the OP should know revhard uses ebay bov's in there kits now.

boosstboy

if you have the cash get the forged internals.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">i know this is not relavent to the actual question but i just thought the OP should know revhard uses ebay bov's in there kits now.</TD></TR></TABLE>
i didn't know that, good to know

sfwd996

https://honda-tech.com/zerothread/2157090 heres a link of 600whp on 100% stock k20a2 block.