2510 On Rb20 - Out Of Puff

[yogi000]

chris,

it doesnt make a whole lot more than yours but i think there is still some improvements to be made on mine 220 seems to be a realistic goal

george

[Chris32]

Excellent!

Just what I wanted to see! As mine is tapering off (140ish), yours is still going up. My turbo is smaller, as it makes a bit more down low and earlier, but yours pulls away up top

Does your car still feel like its pulling hard right up to 7500rpm?

[yogi000]

yeh it feels like it even tho it might not be.

that power run was done with about 18.5psi tapering off to 17psi at the end

and this is graph from the HKS website regarding the 2530 on a rb20det. I wish i had 220 with 14psi

[Chris32]

Yeah, I want to just pick up the last 2500rpm on mine thats all so a slightly larger turbo might be the way to do it

Rememeber, Japs use differant fuel to us, fair bit higher octane, so I'm sure if your car was running 101 or 103 RON fuel (whatever they use) you could get to 220rwkw at 14psi just by adding more timing

I'd be running it at least 20psi if I had a 2530, it would come on nice and quick, and be able to hold a decent amount of boost up top

[Chris32]

Anyone got any dyno sheets of a 2535 on a stock RB20?

[Roy]

If you look in the 260rwkws thread there is R31 POWER's plot and jnr32r's using 2535.

If you want more power with better response i dotn think you can get away with not having a good manifold. My setup seems to match the 2535s in response and makes more power....and the thing is plain bearing. You would have to think that the manifold helps out of sight as (LOL) most ppl you talk to tell you Trust turbos suck?!?!?!?!

[silver gts-t]

what are teh specs of the 2510 compared to a rb25 turbo??

i previously made 190rwkw @ 15psi with the rb25 turbo and now after some small mods im doing 188rwkw @ 12psi

i'll be turning up the boost soon....

[R31 POWER]

Hey chris.I have 200+rwkw on about 16-17psi.It's a safe tune and not a power one.It feels good on the street with 16psi coming on at 3400-3500rpm and hard at 4000rpm.It holds 17psi and even more to redline hehe.

My boost curve is weird on the dyno graph and i don't know why but it seems fine on the road.

I might get another tune and hopefully see 220rwkw on 20psi.

[Chris32]

Last nights tuning went quite well

got the response back it was lacking after last weeks tuning

We adjusted the acuator on the turbo to try and bring it on faster and hold boost up top

It worked quite well, I photoshoped my last dyno as best I could (forgot to get print-out, as it was almost 7.40 and Shaun wanted to go home!)

Picked up about 40rwkw at 100km/h and a fair whack of torque to boot

Feels quite quick on the road now, lots of response!

Still need a bigger turbo, I'd swap all that mid-range for some top end! Would make a crazy drift setup now, comes on quite hard

With the acuator adjsuted, boost was a bit spiky, saw 1.7bar in 3rd this morning, so I had to adjust it down a little, as it was a bit erractic between 2nd, 3rd and 4th. Did get compressor surge at this boost, so it must be at its limit at 1.3/1.4 bar

Not bad for a 300PS rated turbo!

The dyno reminded me allot of a RB25 power curve

This dyno attached is approx what was achieved last night, when I get the printout, I will scan it and post it up

Chris

[yogi000]

hold on when boost hits!!

[Robo's]

What did you do to the actuator. I presume you have the HKS adjustable actuator so you tightened it up to run more boost??

[Chris32]

It does have a adjustable acuator, but the thread was a little rusted and the nut was pretty locked

Shaun just ended up using a pry bar and gave the plate which holds the acuator a bit of a tweak to pre-load the spring a bit more

It didn't need much to get that result. Comes on pretty hard now

[Chris32]

If you look in the 260rwkws thread there is R31 POWER's plot and jnr32r's using 2535.

If you want more power with better response i dotn think you can get away with not having a good manifold. My setup seems to match the 2535s in response and makes more power....and the thing is plain bearing. You would have to think that the manifold helps out of sight as (LOL) most ppl you talk to tell you Trust turbos suck?!?!?!?!

<{POST_SNAPBACK}>

Yeah, agree, a good manifold would help if you are running a bigger turbo. 2510/2530 seem to run pretty good with the stock manifold, I think a 2535 would benefit from a decent exhaust manifold. 2530 i'm not so sure, it might bring it on sooner, but I reckon it would then struggle up top

I'm going to video my handcontroller to work out how quick it comes on, when driving its hard to see it all and concentrate on driving