Slow and steady H22A build for EG

**hayashi_1986** · 27-05-2008 08:25 PM

Hiya,

I thought I might post up a little something since I've stopped working on the H22A for a while now. Not many people know about it yet since I haven't spoken much...progress has been really slow after starting full time work so yah

But, now working full time...I've got some money now to continue it over weekends hehe...When I'm not with my GF that is lol

So yeah, here's what I have so far:

H22A1 Stock Bottom and Top End
Stocky Gearbox (couldn't get an LSD box

rare as)
Skunk2 IM
Skunk2 66mm TB
JVT Header 4-2-1
OBX LSD (on order)
Avid Racing Mounts
Koyo Manual Tensioner Conversion Bearing + Kit from Honda

I've hit a snag and I'm sort of unsure what diameter to use for the remainder of the exhaust. I'll be using a metal cat from X-Force, so now I've gotta figure out what diameter I need. Would 2 1/4" been fine? Or do bigger engines like the H22's like something fatter...like a 2 1/2"?

Hopefully I can get all this on the road with a new re-spray at the end of next month!

Thanks in advance for your help!
Nick

**nigs** · 27-05-2008 08:45 PM

Three.

Do it.

**Benson** · 27-05-2008 09:01 PM

2.2l needs at least 2.5inch

**hayashi_1986** · 27-05-2008 10:26 PM

Sweet as. 2.5" seems the go...3" is a little big isn't it? lol I figured it'd be for hipo boosted cars?

**Mitchman** · 27-05-2008 10:35 PM

yeah to big unless its for drag I'm sure that header I'd 2.25" at the merge so that will hold it back if u do any head work

**hayashi_1986** · 27-05-2008 10:45 PM

Ah k, I see what your getting at. I'll leave this thread open for a bit more discussion before I take the dive

Thanks for your advice mate

**fatboyz39** · 27-05-2008 11:32 PM

ill be going 3' on my h22a. 2.5' is just weak! but in your case.. 2.5' for sure. I use a 2 1/4 on a 1.3L. No loss in power.

**ALLMTR** · 28-05-2008 02:01 AM

Yep too big is a myth

**PNS 001_EG3** · 28-05-2008 07:34 AM

i was going to build a h22a and sold it as im now looking for a kswap. when looking in to headers and exhaust. i was going to run lov fab with a 2 1/2 inch. this was from some great advice, but my only problem was a standard 2litre k would run a 3 inch no worries, yes it revs a little harder but im sure this will give you something to think about. if your doing some light mods just go a three.