Ok here's what I have: 2k1 GS-R I/H/E and test pipe this is what i want to do in the spring. JUN II's or III's/ All JUN valvetrain/ ITR intake valves/ JDM Pistons 11.1:1 cr pistons. This is basicially what I want for now. Give me your opinions or techinical advice about my set up thanks
Hova

 

sounds like a good setup. if ur gonna do JUN then go with the 3's. and be sure to get a header that can breathe, like a jdm itr or Toda

 

I have a greddy 4-2-1 then a test pipe then a greddy evo I was think about jdm 4-1 though

 

Get JUN3's with valvetrain, VAFC, and get CTR pistons. You'll be a beast then.

 

Why would I go w/ CTR pistons they have a lower cr 10.8:1 while JDM ITR has 11.1:1. I figure w/ higher cr and right tune that would be a beast.

 

compression with ctr's in a GSR motor will be over 12

 

oh, well i was just looking @ the CTR and they are high domed will they fit w/o modifications? It lookes like it might hit the valves.

 

na you'll be alright. just run at least 91 octane and it'll be a beast

you can always clay the motor to be sure u wont hit anything, but like i said you 'll be fine

 

Umm...JUN 3...any plan on intake manifold and ECU setup?

This link mite help on getting compression ratio:
http://www.c-speedracing.com/howto/c.../compcalc.html

 

I say get the ctr's or look into some forged pistons. With the jun 3's and high compression you are going to need some good tuning and a couple hours on a dyno. Very solid set up, should make good power.

 

Sounds like a good start. Personally I would get the JunIII cams and valvetrain, a ported head (imho very important to get the most out of the cams), Skunk2 mani, a good header (jdm or hytech) and at least a 12:1 cr (to get the most out of the cams). Your stock ECU wont cut it either (it turned my bumper black ) so either get the JUN ecu or get a standalone. Then you will have a NA beast (200+whp).

 

For ECU i was thinking about Hondadata I heard they are really good. This car is still a daily driver and I just wanted a little more beastly power. How would higher cr like 12:1 work w/ my daily driving?

 

some good tuning and 93 octane you should be fine

 

i would rather spend less on cams, and more on better intake (comptech) better intake manifold (ported skunk2/itr manifold) and better exhaust manifold (smsp, hytech, JG tweaked by IB)

that way you might spend a lil more money, and get same or better power, but you arent stressing out your engine as much. going to 9 to 9.5k is not a very good thing.

dont forget you will need to get crank re-polished, hondata intake manifold, and bigger injectors

 

i say screw all motor *****!! go FI hehehe...just joking haha...i used to be NA, and the darkside stole myass....but yea that'd be a tight setup just run like high octane (i think it's safe on 93 octane with 12+ comp). hehe

 

good setup in my opinion...JUN III, retainers, springs, Skunk2 Intake Manifold or Type R Intake Manifold (requires modification)..get your head ported and polish...more, bore your throttle body to about a 68mm..get some cam gears..run compression rate at about 12:5:1...and get fuel pressure regulator and a hondata stage 2..and with a header a recommended getting either hytech or SMSP...either one will work well..and run 2.5 inch all the way back...run 91 octane or you might need to run race fuel mixed with 91 octane...

 

Anyone out there running the CTR pistons on Stock GSR Rods?...how long have they held out and have you heard of anyone throwing a rod as a result of such high compression on stock rods...
I'm asking because my engine was blown in a Hydrolock and I'm in the process of building my new motor...so I was thinking about Doing the JDM ITR pistons to get the 11.5:1 CR, but if the GSR rods can hold out on 12.1-12.5:1 CR than hell I'm sure the Toda B's would love that even more.
(also worried about Detenation, We've got a great supply of 93 octane out here, anything else I need to worry about besides tuning to prevent it?)

 

i would also like to know if the gsr rods would work with CTR pistons...but i can only get 91octane in my area...and i was wondering if higher compression would cause me to fail emissions...in know the junIIIs will but i plan on running skunk2 stage 1s which should pass tailpipe but what if they were teamed with CTR OS

 

Ahhh **** Vinh you blew your ****? sucks for ya lol

 

I'd personally stick with the JDM ITR pistons. 11.34:1 with GS-R head. This is the setup I'm building(got pistons yesterday). I'm thinking of having the rods shot peened, but I suspect they'd be fine w/o it. I may go for some flat faced valves later, which would give me another .2 or so, not sure. Another option would be a thinner head gasket...my point is that with those pistons you can get to slightly over 12:1 with tricks, whereas with the CTR pistons and wild cams you could have clearance, detonation, or rod failure issues from the get go. Naturally properly tuned you could get by, but don't get trapped anywhere w/o 92+ octane gasoline.