power outputs for modded rb20det's??

[DCIEVE]

old setup,

fmic, safc, exh, small t3 highflow, pod= 192rwkw@1bar

will have the new setup finnished soon with td06, gtr injectors, bigger pump, ecu. (std manifold/plenum/tb/coils etc) anyone had problems with the std coil packs at higher power levels? i was forced to run a really small gap on the plugs to stop it missfiring with the old setup already

[RedDrifter]

Hi just wondering what you guys think. I am going to do a rebuilt in the not too distant future on my RB20DET. I wish to have the tomei 2.2ltr pistons and have the tomei 260 Duration, 8.5 mm lift cams (both inlet and exaust). Possibley a set of tomie valve springs. The only thing I need to know is what turbo would be good for this set up.

I was thinking GT2835 but I don't really know what to expect from this turbo. A set of 550cc injectors would probs be the injectors used too.

In the end I want a reliable 250 odd rwkws. Any advise would be great thanx guys.

[legend01]

dont know what to expect hp wise all depends on the tuner i suspose the head is of my rb20det geting ported at the moment and all the mods are going on as it is reasambled the mods are

Q45 afm

hks cam gears

hybrid 600x300x76 fmic

hks 264 cams inlet +exhaust (9.0mm)

grex remote oil filter

oil cooler

gtr fuel pump

nismo fuel regulator

recon 460 hi flowed injectors

twin thermo fans

cast hks exhaust manifold

hks 32mm external waste gate

hks panel filter with cold air induction

to4e bb turbo (new)

3" trust exhaust with hyflow cat

custom dump pipe

extreme clutch and pressure plate

master cylinder brace

wolf 3d ver 4 plugin ecu

and as i said the head has been ported and the valves are going back in next week but the bottom end is staying stock engine only has 60,000 ks on it hone marks in the bore still look like new very little wear no piston slap hp goal well lets just wait and c as i said depends how good the tuner is these parts will be going on in the next month or so as i get time to assemble it the main reason for bolt on parts only at the moment and stock bottom end is the long term goal is an rb30det as all these parts will still bolt on to it the bottom end is being done in that engine so if this one goes bang it dont matter as the other engine goes in then kinda keen to find out myself wot sorta hp it will make hoping for around the 250rwkw though

[R32 Zilla]

standard internals

hks 2535 turbo with hks split dump pipe

3inch system with hf cat

truck intercooler 550x380

k&n pod filter

oil cooler

490cc injectors

catch can

remapped computer

z32 afm

1.3 bar...... 206rwkw

Tim.

[RBsileighty]

...oh and can you use GTR valvesprings with std GTR cams with the RB20 hydraulic lifters???

If you ran this setup (assuming motor has forged pistons), where would your new redline be now?

[Roy]

If you ran this setup (assuming motor has forged pistons), where would your new redline be now?

Meh, forget forged pistons...i dont hear about too many RB20s killing pistons, they seem to normally get tired and stop making the power they once did, so im not going to bother whilst the engine still has good even compression.

Im going to keep my rev limit between 8,00-8,500rpm depending where boost comes on with new cams and cam gears, assuming it is still making good power. Ill grab some valvesprings whilst im at it because my engine has got 170,000kms on it.

[summoner]

haha i killed 2 RB20's both times pistons(well 1st time injectors failed), mate killed his rb20 on w/end, was a piston.. guy i bought my turbo of killed engines, pistons..

[WHITE R32]

so much killing going on... all those poor defenceless rb20's dead at sutch a young age... taken down in their prime OHH THE HUMANITY!!!!

[summoner]

hehe 2nd time was intentional.. told them to wind in lotsa boost rofl. Not like a replacement RB20 costs anything

[Roy]

hehe 2nd time was intentional.. told them to wind in lotsa boost rofl. Not like a replacement RB20 costs anything

Based on your experiences then ill see you all in the graveyard shortly... :wavey:

...but seriously these engines sound as though they gave up the ghost because of youthful exuberence more then piston failure. Im sure most cars that are simply boosted up with little attention to A/F, engine fueling, cooling etc will have probs.

Anyway i put my theory to the test shortly

[Mr GTS4]

yeah get into the RB20's with 160,000kms+ on them.. mine has got 162,000 i think and it still kicks arse.

[RedDrifter]

Yeah mine still goes hard just gets alot of blow by and I do mean alot.

R33 turbo running 13psi and a busted fuel pump don't mix. Whoops.

[edgasket]

what's the craic with fitting a GTR pump to a GTSt? i mean fitting-wise and fuelling-wise?

[Chris32]

HKS GT2510 Turbo

Re-mapped stock computer

Stock injectors

Bosch 040 pump

3" exhaust

FMIC 600x300x70mm approx

Pod filter with air feed

Remote oil filter and cooler

Extreme single plate clutch with 4.5kg cromoly flywheel

Modifed stock BOV (bypass/overboost hole plugged)

200.4rwkw at 1bar with stock BOV, 200.2rwkw at 0.9bar with BOV modded)

Boost controller problems meant that the run with the modded BOV was done with no boost controller, only the HKS acutator contolling boost

I'd say 210 rwkw at 1bar with boost controller working. I have run up to 1.4 bar with octance boost, but haven't dyno'd it at that due to boost controller problem

In process of planning the next stage to try and get 220-230rwkw

Motor is stock, 125,000km and may be replaced with a fresher but still stock example when the next stage starts

[MM2death]

Refer to sig.

S.

[Ahh32]

Based on your experiences then ill see you all in the graveyard shortly... :wavey:  

...but seriously these engines sound as though they gave up the ghost because of youthful exuberence more then piston failure. Im sure most cars that are simply boosted up with little attention to A/F, engine fueling, cooling etc will have probs.

he he yeah... :wavey: pistons... crack, crack, crack, crack, crack, crack, crack.

count em. all seven.

yep did both lands on no#5, and my oil rings were siezed together & my compression rings have worn down about 10thou.

I'll take better care next time 'round

[Chris32]

Yes

just thought I'd ask for a opinion from everyone in reagrds to RB20 upgrades

After reading a thread in regards to modified RB20 power outputs, Sydneykid mentioned fitting standard RB26 cams to a RB20

from what I can gather on the thread, the cams are a straight swap?

I want to use a set, but I am unsure of wether to isnstall them as is,or convert to solid lifters as well

The motor itself, hopefully, will remain internally standard, with a rev limit of no more than 8100rpm, so I am unsure if the solid lifters would be a improvement or a advantage?

Also, I may add a set of cam gears as well if needed

My goal is 230rwkw (currently 200rwkw) at around 1.3bar of boost. I am installing GTR injectors, Microtech computer as well. All the other stuff - HKS GT2510 turbo, FMIC, fuel pump etc are already proven performers and will stay as is

Will the GTR cams help, with standard hydraulic lifters, and what type of increases have you seen in the past?

Sorry for all the questions,

regards, Chris

[Roy]

I should be able to give you an answer in about 2 weeks, picking up the cams and cam gears next weekend.

[Chris32]

I should be able to give you an answer in about 2 weeks, picking up the cams and cam gears next weekend.

Cool, I look forward to seeing the results

Are you going to run them with stock lifters etc?

Are all RB26 cams the same? By looking at the specs on the Tomei site it suggestes they are, but each model the torque output seems to rise, maybe suggesting a differant camshaft profile for each model?? Are yours 32 or 33 cams?

[Roy]

Running std hydraulic lifters with GTR Valve springs and cams...only changing the valve springs as my engine has done 170,00kms so probably well past their best.

Good quesiton about the cam differences R32 to R33 etc. Could be the different turbos and tuning that increased the torque more then a mechanical change in the engine...i think the cams im getting are off an R32 GTR