Hey guys, I'm finally gonna start concentrating on building my GSR engine on what to know what you guys think of a setup like this:

Skunk2 Valve springs and titanium retainers
Skunk2 Stage 2 cams
Skunk2 Intake Manifold
PR3 (B16A) pistons to yield 11.3:1 cr
New GSR headgasket
OEM JDM 4-1 header
Carsound cat 2.5" in and out
2.5" mandrel bend b-pipe
Apexi N1 muffler
B&M FPR
Next i'm still unsure of what would be better for this setup, either VAFC or Hondata.
And here in So Cal all we get is 91 Octane, so i figured keep compression between 11.3-11.7
So what kind of power could i expect out of this (tuned of course). Any comments and suggestions would be gladly appreciated. Thanks!

 

Sounds like you have a plan. I would go for a new header, there's a link of that great header test on here, shouldn't be too hard to find. I'd go with the Hondata.

 

You think i should try something other than OEM JDM 4-1 header. I wanted that because i don't want to spend a lot more money for just a couple HP. and i also have that link too.
Thanks for the advice!

 

What about your tranny ideas?

 

well, as for tranny i plan on swapping out the GSR one for something with shorter gears. maybe jdm type r because i want LSD and the 4.785 FD would be nice to.
then lighter flywheel and stiffer clutch. (not sure on those 2 things, need to do more research)

 

For those cams why not run a little higher compression.... With the proper tuning you could get away with P30 or PCT slugs which will pump it up a little more... They have a little bit of overlap and they love high compression.... I would atleast consider P30 slugs but it's up to you.... Why not just keep your JDM ITR header... It's already got a 2.5" dump and should be fine for your setup... Anyways that's just my $0.02... Latez

 

P30 is JDM b16a right? because depending on what is available and how much it costs i was thinking about those but would settle for USDM.
as for the header, right now i have stock. JDM ITR is what i want to get.

 

The P30 pistons would give you 11:5:1 with stock 3 layer headgasket. I would rather sacrifice a little compression with the ITR p73 pistons 11:3:1 and have a more sophisticated piston like moly coating on the skirts straight from the factory. Hondata S200 is you best bet, due to its ability to grow and adapt to new mods. Also don't forget some new arp rod bolts and arp headstuds

 

go with the JG headers. little more money, but its worth it.

 

If you want the Tetra Methyl coating on the piston skirts why not just go with PCT slugs... Then you don't have to sacrifice any compression.... Latez

 

with stage II skunk2s, as well as Bs or II (JUN) will require you to have a little more c/r then 11.3...many guys on the ITR forum used the cams with simliar compression, and power gains weren't all that great from the cams.

 

The DC's also sit a lot lower so if you wanna don't wanna destroy your header then you better keep your car up.... The OE JDM ITR was designed a lot better than the DC and I would still stick with it even if the DC does make more power.... Just my $0.02.... Peace

 

run CTR pistons, dont be a wuss

 

Even on the 270mm block it still sits lower... Take a look at the runners on the OE JDM ITR and then on the DC... On the OE JDM ITR you'll notice that the runners are more diagonally mounted bringing them up tighter against the oil pan... I've never seen one DC like this.... The OE JDM ITR may have flaws but overall it is made a lot better than the DC mild steel ceramic coated header that cracks very easy if it is ever hit.... I'll still stick with the OE JDM ITR

 

Because pct pistons would put him at nearly 12:3:1, and running anything above 12:1 on 91 octane is a pain in the ***. I'm not saying it's not attainable, just a pain in the ***, especially if you enjoy running stock timing. In California our gas is crap, the worst I bet of any other state. If you do decide to get pct pistons over p73 then hondata will be crucial. I was planning on running pct's in my gsr, but the obituary list for b18c's that have detonated with them is scary

 

WOW! Haven't checked the boards for a couple days, but i want to say thanks to everyone who responded. You guys have provided me with a lot of good info, like the ITR pistons. Yea, DC JDM hangs too low i'm probably gonna stick with OEM.
There are things i was reminded about that i forgot to list. i will be getting cam gears to go with new cams, gauge for FPR, port and polish. and since my engine has 95+k miles i'll be getting an ITR oil pump, new rocker arms, all the bearings, etc stuff that goes into rebuilding a motor. I want this setup to be as strong and reliable as possible.
So thanks again for all the advice and help

 

Looks good to me. I might suggest the ITR pistons also. A type-r IM and TB would also be a plus to that setup along with the JDM ITR 4-1 w/Heatshield I would say stay away from anything higher then 11.2/3 CR area when out here in SoCal with 91 octane else detonation will be a pain in your ***. -HIT