Big RB20 Power

[Morgs]

Guys,

I know some of you have big power RB20s round here,
Care to share the results/power, and the setup used?
Just interested for comparisons sake

Btw: How long did the engine last before it died with said power? (If at all)

Cheers,
Rick

[BaDgEd_S13]

yes this we be gr8, plz share

[MrMayhem]

no its too confidential to be shared with out easterling brothers

we can trade you tell us how you make 400rwhp reliably with the 25s

[TJ]

Well the 3 major RB20's that all made 300 @ the wheels didnt last too long .... all stock internals though and all using a VG30 based turbo , manifold, gate , hybrid cooler and some sort of ecu.

Summoner , Simon and Brian has all used this sort of set up.

I intend on using forged pistons in mine to see what difference it makes.

[DISTRBD]

:lol: :lol: 300hp and they all broke....

hoping for that with out the 75 shot NOS

[Random_Hero]

also daves RR 32 WA although at the dyno on the weekend it pulled 293 or whatever he has pulled 300plus with no problems... running to4e and ext hks gate microtec fmic boost and teh usual shite

[RB20ZED]

eh but find out wot made them all die and you will find it is from other cuases than block weekness
300 is easy in a 20 no need for big dolla parts ect. you can get close to 300 with mostly standard parts

[MrMayhem]

Now dont you find it odd that the 3 forementioned pinged engines all used the exact hand me down turbo

maybe the intake temps were a tad warm from squeezing such a small turbo

[DISTRBD]

My first rb20 is still going after 6yrs of torture :lol: :lol: :lol:

75 shot will sort this new one out





might start looking for a spare :dizzy:

[TJ]

Now dont you find it odd that the 3 forementioned pinged engines all used the exact hand me down turbo

maybe the intake temps were a tad warm from squeezing such a small turbo

Yeah i think it becomes a hot air compressor rather then boost maker.

[McLOVIN]

I think MrMayhem is on the money.


Getting this sort of power out of this engine may be cheap, but you still get what you pay for.

[HI PSI]

Most of em die due to broken ring lands from dodgy tuning, didnt one break on the autosalon weekend?
Brett is right, dave is running a to4e (thanks to mr mayhem!) with ext gate, hks manifold, gtr injectors and a microtech on board. The tune is fat, but safe, as is evident when dave has accidently ovaboosted it to 26 psi on a couple of occasions and the motor is still holding together strong (touch wood). I think his next mod is cams and a bigger front wheel to waken it up a bit more.

Cheers, Luke.

[TJ]

Yeah Brians [NICE] 32 broke a ringland

but the turbo on it also killed simons 32 and 2 of summoners engines......

we think it has more to it then tuning seeing as summoner had a PFC in it.

[Evan]

Its not often you hear of RB20's breaking, on SAU there are a lot between 200-230rwkw going reliablr, I agree that the turbo may be the cause, what about the hot weather in perth? :)

Evan

[v8souproar]

if they are presisely tuned(aftermarket ecu), good fuel and correct turbo and intercooler they can produce 260kw-280kw at rear wheels reliably.
Basic mods needed custom dump pipe, 3 inch zaust, hi flow filter, bleed valve, GTR or aftermarket intercooler is needed if boost is over 0.7bar but not over 1 bar as ceramic wheel will fail, GTR or bosch fuel pump.etc, ecu chipped and 98 octane fuel(bp ultimate) all this will give about 160kw at the wheels @ 1bar,
for 220kw+ @rwhls u will need the turbo upgraded(HKS garret gt2530 with the T3 flange will bolt straight up and is rated to over 270kw) or hi-flow the standard turbo , Z32 airflow meter(for tuning reasons), bigger injectors (modified series 4/5 rx7hi impendance 550cc injectors work well) and the standard manifold with the throttle body relocated to the front to shorten and simplifly intercooler plumbing. more info availible in issue 64 of ZOOM. Hope this helps!

[RB20ZED]

eh dude they make bulk power for so cheap 1 bar into mine with cat back and fmic made 176rwkw thats all i have are those mods. and re positioning the throtle body onto the front of the plenum is gay leans out last cylinder

[Morgs]

I think I remember seeing some guys budget RB20-R31 in Zoom, HKS GT2540 or similar with decent power?

Either way, I havn't seen someone go all out with a RB20, seen it with just about any other engine... should be interesting I hear of one in the pipeline

[DISTRBD]

Well me just got another 20 as a spare.....



so im going to push the limits of the stock 20 internals

see how much GAS it can ingest before it goes POP...


my ame is 300+

[Morgs]

Interesting... let us know how that one goes :)

[Evan]

GAS GAS GAS!

[v8souproar]

eh dude they make bulk power for so cheap 1 bar into mine with cat back and fmic made 176rwkw thats all i have are those mods. and re positioning the throtle body onto the front of the plenum is gay leans out last cylinder
what i stated was for reliable power, but prob more power would be had(up to 200rwkw), i would wonder whether yours is leaning out at the top end? did it getted checked on the dyno, if so what was the readings at the top end. and also a GTR manifold is similar in theory to a repositioned throttle bodied rb20 manifold. would u say the last cylinder leans out with that multi throttle body manifold?

[MrMayhem]

pressure works backwards number 1 would starve not 6

[DCIEVE]

mine should be ready soon, aiming for well past 300rwhp running no more than 18psi, but really whatever the motor will give me before it pops.
link ecu, gtr injectors, 019 pump, hybrid cooler, 3" zorst, trust td06 19c 8cm exh 'high flow' (garret comp wheel, the std trust comp wheel is shite), lots of custom plumbing etc. also have a 10cm housing both are internal gate on the std manifold.
made 250rwhp(sst) mostly stock so should be interesting
i dont think the coil packs will be strong enough, had problems having to run really small gap before... noticed rr32 has some aftermarket coils in his too

[doriae86]

adam has a td06 on his
external gate and does around 300
so u should go close to what you wish to do

[summoner]

Yep I made 306wrhp, Brian made 303rwhp and simon around 298 I believe in the end.

All 3 of us pinged our cars to death.. set of forgies in an RB20 and they'll be indestructable.

Imho i'd rather build an RB20 over an SR20 but I am biased there. Also nothing against Dave, but I do find his HP figures a little hard to believe.. Brian lost around 8rwhp between dyno's when at autosalon, Dave dropped over 40.. that kind of seems sus to me. I have also seen it at the drags and overall it wasnt going as hard as I expected it to for such a turbo. That said i'm sure it is a very capable package.

[Morgs]

So does anyone actually throw forgies into them... or is opening it up just not worth justifiying?

Looking through a Tomei catalog I think it was, they had a set of 2.2 pistons, on the expensive side, but im sure the idea is right.... set of these be safe in a 20 or is that going a bit too big on the pistons?

I'd be interested in the long term durability of a forged 20, ive also heard GTR cams are used in conjunction effectively?

[doriae86]

do you guys think it was that particular urbo that was killing the cars ??

id hope for around the 300rwhp on a nice cool 1 bar

wonder if it can be done

[sack]

i think 300rwhp be possible with 1.0 bar plus a good tune, not stupid lean tune just to make power. even with decent turbo only and safc is enough. get a powerfc, wolfs are a dirty thing :)

[McLOVIN]

do you guys think it was that particular urbo that was killing the cars ??

id hope for around the 300rwhp on a nice cool 1 bar

wonder if it can be done
I dunno about 1 particular turbo, but it's obvious that KIND of turbo is not suitable for these engines wanting to produce these kinds of numbers. It must be well out of its efficiency range to be causing engines to pop.

300rwhp on 1bar is entirely possible. You'd need a fairly large turbo, higher compression and a very good tune, but it's possible.

[TJ]

Brians [NICE] made 270 odd with stock turbo, no cams, no ecu... so 300 on 1bar should be easy with a better sorted car.

[Morgs]

270rwhp with stock turbo? Far as I know that is beyond capabilities of the standard turbo. I don't want to label anything as a lie or false, but I am usually skeptical when the laws of physics are broken :)

[MrMayhem]

nah it did it

series 2 snails go 250 up to 270 but the charge temp would be extreme and time before loosing wheel short

[ScarifieR]

RR32 has a set of bosch coils and just leads going to the sparkplugs
a sort of "custom ignition" setup

[MrMayhem]

microtech

that has advantages getting the coils away from a hot engine

[doriae86]

the 1989 r32 snail is non series 2 ??
pos

[DCIEVE]

so what is safe power level, im assuming the ones that went pop had stock injectors and were leaning out? with lots of fuel hopefully it should hold on for a little while

[hako]

safe power level will depend on a whole heap of things
i wouldnt go past 300rwhp without injectors or at least an a/m fuel reg.
if u keep af ratios healthy and dont let it ping then u wont have a problem

[doriae86]

any1 seen a hks 2540 on an rb20 ??
how they perform ? very laggy compared with stock??

[Morgs]

Zoom had one on some project aussie R31 RB20 transplant which made 220rwkw with a few associated mods from memory....

[hako]

that article u refer to morgs, they say a few times its a 2530, then the most recent update stated it had a 2540.
i reckon that was a typo, and it in fact has a 2530 . it is shown in earlier pics and appears to be a 30 also

[The Walrus]

This thread needs more knowledge and less backyard mechanic.

P.S. suck me.

[DISTRBD]

Nothing wrong with backyard mechanics..... :lol: :lol:










so back in ya hole :wave:

[B0BB0]

This thread needs more knowledge and less backyard mechanic.

P.S. suck me.

nothing wrong with backyard mechanic, just look at last months feature car ND4SPD, backyard job, and i think it will chop u :D

[hako]

id prefer backyard mechanic to catalog/chequebook mechanic

[DCIEVE]

just because some people have the ability to do the work themselves makes those who pay a bit jealous

[Elithrar Sirfalas]

I've read that 2530's go perfectly on an RB20; search the SAU 'Forced Induction' forum for more.

[TJ]

its a fine line apparently

2530 goes hard
2540 becomes a bit of a pig.

[Elithrar Sirfalas]

And it's supposedly the opposite on an RB25; the 2530 spools up quick, but lacks the top end power.

[DCIEVE]

does any one have a 2530 on an rb20 locally, would be interesting to see the results

[Morgs]

Evan has one on his RB20, should see the results by next weekend

[Evan]

yeh should see the results if the workshop pulls their FIST out of their ass. Will post it up.

Evan

[TJ]

And it's supposedly the opposite on an RB25; the 2530 spools up quick, but lacks the top end power.


Thats quite true, know of a certain R33 owner who is upsizing due to the lack of top end his 2530 provides.

Evan lets us know how you go mate.

[doriae86]

hmm 2535 could be the perfect choice ?? maybe, maybe not

[hako]

its up to you to find out dylan...

[Cake]

just be the guinea pig !

mate has just put a 2535 on his rb25det r33, its untuned atm so can't comment on how it performs

[G0DF4Th3R]

id be interested as well

need to ditch the 2510 :)

[DISTRBD]

Hope to have my rb20 powered machine going in the next month or so..

I have 1 complete engine and 2 bottom ends for spares as we are going to push
them to the limit....

[doriae86]

any1 seen or heard of how gt30 sized turbo goes on rb20
something with a.87 rear end

cheers

[R31 POWER]

Hopefully soon I should have a HKS GT2535,GTR cooler,stainless exhaust manifold,GTR injectors(or keep standard RB20 ones and use a adjustable fuel reg),maybe Wolf 3D V4,bosch 040 fuel pump in the R31,I'll keep you guys posted how it all goes.@300rwhp would be good :)

[TJ]

It would make for a nice improvement on last time, then i can drive it again ! :)

If things go right this time round id like to fit something to my rb20 before pas

[Todd]

so far no one has mentioned the burgundy R31 with the RB20DET in it ,
which has been a benchmark for a long long time now, and is still alive and well,
will have to see how the new owner handles it.
that was dynoed at 290rwhp only limited by a cut from the ecu
that was still using stock injectors and motor and exhaust manifold
intake manifold was converted to forward facing, and hasnt experianced any problems.
only other mods were bolt ons and hi flow snail with a bigger housing.
having driven this car and been a passenger quite a few times i can definately give it the thumbs up and another one for being simple in its setup.
its been said before and ill say it again.

12.55

[doriae86]

seans car is the performance benchmark
no1 can doubt that, i would love to run faster, but im sure ill end up spending a bit more rthan he to get a similar result

[doriae86]

also even should post up too
he has wolf v4 with 2530
running around 200rwkw
well done!!

[Remix]

2530 will be my choice when the snail upgrade comes around. Im going to base my prioritys towards an ecu, fuel pump, 550cc injectors and a fuel regulator. Safe tuning is what im after, not lean power.

Awesome to hear people making great power from the RB20's :)

[doriae86]

wont really need injectors with 2530
stockers will be enough with a fuel reg

[RB20ZED]

yeah but reg is a cover up no point pushing sumthin to its limit they will only fair after a short perios of time gtr inj will be a good upgrade option

[doriae86]

its well documented rb20 injectors are capable of around 200rwkw
if you dont need to upgrade why the hell would you ??

[LostInTheWoods]

I have an HKS 2530 and HKS 2535 for sale if anyone is interested. Bolton for RB series. pm me.

Thanks

[Evan]

omg i forgot to post.

I ended up getting 199.6rwkw @ 17psi with 12:1 a/f

very responsive 17psi around 3500rpm!!

a bit more boost and a better tune soon and I think a smoother 210-220rwkw is attainable.

Very happy with it!

Evan

[dorisaur]

SUSPENSION!!! HURRAH!!!!!!

much better than power

[got boost]

i made just under 300bhp and sold off turb's, engine before the 26

[R31 POWER]

What fuel pressure are you guys running to get 300rwhp on stock injectors,R32 RB20det that is.Also does the air-flow meter max out at 5500mv or something?

...EDIT...It does'nt matter now coz I have a Z32 one and will be here next week.
I read in ZOOM that RB20det wagon did 240rwkw with 60psi fuel pressure :dizzy: with standard injectors.I'm not sure I can beleive them coz at one stage they said it was a GT2530 then a GT2540 :squint: so yer anyone know if thats safe?

[dorifuto]

I had a 2530 on my rb20. 290rwhp at 1.2 bar with AFR in the mid 10s thanks to the mines ecu (jap tune)
turbo back 3" , hks 100mm thick gtr cooler, stock afm injs and reg, bosch 040 pump.
standard inlet manifold.
Very responsive, LOADS of top end.
Strong torque from 3000rpm onwards

[thommo]

my friend has r31 and that has like 300rwhp and its just got high flow vg30, mines ecu, fmic, exhaust and a relocated throttle body so there's less piping.

[SmItLeR]

he wouldnt own a civic to which he is currently selling? :P :P - "simon"

[thommo]

haha simon dont own no r31 yet

[coonspc86]

na not own fully yet just waitin on slow ppl to pay me.
rrrrrrr!!!