Full Tomei rb20 head! In put please!

[canu_50]

Hey guys!

I just picked up my spare engine wich i will start working on shortly after the skyline is done.

Right now the rb20 is having tomei poncam, 1000cc ID injectors, aeromotive 340lph fuel pump, gt-r machined intake, full custom exhaust manifold with gt turbo, full custom exhaust, haltech pro-plug in computer.

For my next Engine set-up, i am thinking, going with the tomei procam stage 3 with a 9.25lift, solid lifter conversion, tomei spring valve,valve, valve guide, port and polish head. I will also balanced and cryo treat crank shaft, full arp bolt/stud.

My goal is to have a 450whp reliable 9000+rpm rb20. Right now i am at the reading to part to make it possible, but with my actual rb20 and turbo set up, 400whp is possible.

I want to know what you guys think, what i should run if you have any other suggestion. The car is mainly use for roadracing.

Please don't tell me go rb25 or **** like that.

[Supraclean]

If you got the money, DO it. No one that I know of has those numbers on here.
Would like to see it built.

http://www.skylinesaustralia.com/forums/topic/369222-forged-rb20/

[Goodlucks7even]

That sky will never come alive. Keep dreaming into your Vtec civic xD

I'd like to see those numbers on a local GTS

[canu_50]

Thanx max appreciate the kind word! This set up i might start only next winter, i checked my cost and would be around 2300$ for the head but this was without the valve and no work put in the head. I know i should'nt build another 20 but i love those engine. I am on the finishing touch for the skyline and will make it run this summer after 3 years of putting it together.

I will also upgrade from my custom exaust to a full race twin scroll manifold in the upcoming year and a half with a precision turbo, it might be a 6262 with the new wheel design and ball bearing to make it breath upon those rev.

[M13]

All powers to ya, I'm taking the same path w/ my 2L instead of doing the cookie-cutter 2.5L

What piston/rod combo are you thinking and where do you find them? (I can only find supertech pistons and no rods so far)
I'm making 420BHP on a 20 w/ ARP headstuds, HKS cams and GT3071R @ 16PSI (no meth), but my next block is going to be built for 24+PSI w/ meth.

PS: I'm running 9.0 lift on hydraulic lifters w/ no problem, so your solid conversion should have no problem if you upgrade springs and retainers too.

[Skym]

413rwhp R32 RB20DET racecar with stock cams, etc (look at comments on first, second page for mods) -

http://www.youtube.com/watch?v=mSkFzn4rZ1U

On racetrack -

http://www.youtube.com/watch?v=-Lk1PZcHaUs

Add probably another 24rwhp or so with Poncams.

Higher hp engines = less hp down low. If for road racing, don't you need hp down low???

If so, compound turbocharging gives best of both worlds -

http://www.youtube.com/watch?v=y-Me6yWApzY

Driving with compound turbo setup -

http://www.youtube.com/watch?v=42Xa1HO1IwI

[canu_50]

Yes i will change the spring and retainer. For the Rod, from what i could see, the stock one, could be more then enough. I was thinking of getting them shotpeened to strengthen them. As for piston i will calculate the clearance up first, see if i have to go custom piston or not.

I will also run meth, but to keep my cylinder temperature low, since the car will be beaten on the track at least once a week, i want to get the most reliability out of it.

Maybe one day i will make a build thread, i never did one... But for the one that may asked, car has every suspension part from whiteline except rear swaybar, wich i kept stock. Hsd suspension, Haltech pro-plugin with IQ3 racepak dashlogger, full stripped, Brake are hp+ and brembo all around, but will be running dtc-30 front brake pad for time attack on street tire. Full supporting engine mod+oil cooler. Custom intake and exhaust manifol/downpipe. gt2876r( i know not the best, but had a stupid deal for one of those.) Caged will be done once the car start.

[canu_50]

Skym, You need power down, but with this set-up, i don't think i would find myself really under 4500-5000rpm. which is where i want to be when exiting a corner.

I will check in those compund turbocharger!

BTW the guy in the video is running the Cobra evolution seat, which i am going to run also, i love this seat, so comfortable!

[motoking332]

idk like too see a build thread on this, i am going full tomei valve train on my spare rb25 head, it wont be as wild as yours since i dont have enough money to machine pistons and get into the bottom end yet

[canu_50]

The build has been under going for 3 year, i am not a fan of build thread either. I will take picture and would be able to send some to you.

Right now my turbo setup is up for sale i am going precision 5858 and full race manifold.