To4e Rb20

[Freebaggin]

Clint,

So what's the result mate? I thought it was scheduled to be tuned today by Martin.

Cheers,

Freebaggin.

[Clint32]

Had a few dramas yesterday getting the tune right so it will hopefully be done tomorrow, the big injectors are a problem below 3500rpm. I Have an adjustable regulator so i can up the boost a little as well.

[macka]

Good luck Clint Im waiting for your bloody result as well..

Ive heard about the 13b Injecters being difficult to tune down low

[whatsisname]

Clint,

When I dropped in the other day Martin mentioned 216rwkw with more to come once you get the injectors sorted. Very impressive so far mate!

John started up & moved the 33 drag beast into the workshop while I was there too. It sounded bloody awesome :uh-huh: Had a look @ his new Volk TE37's + Nitto's, damn they're sticky tyres!

[Clint32]

Ok after many problems we are tuned and running sweet

At first with the 550cc injectors in there were majr prolems getting a good tune below 3500rpm, as there was a constant miss even after loots of tuning, it may have been possible to imporve this a bit but as this car is my daily driver i want something that runs basically perfectly and we didnt think this would happen with the big injectors.

So i went and got the stock ones cleaned and tested and refitted them and took it to get tuned today.

The Result, 235rwkw with stock injectors and no pressure regulator and a perfect tune all the way. So it is possible to get up to 245 with the stock injectors with a bit more fuel pressure but all along i was going to be happy with 230 so im happy now.

The turbo is still prettly laggy and basicaly useless below 4000rpm but that just means you have to rev it to 8k.

[Joe]

4000rpm hmmmm

what the spec of your t04e?

[Cubes]

What boost did you end up running?

So hows does it drive anyhow? Spinup 3rd gear?

We need the dyno run scanned!

[Clint32]

boost was about 16psi, too hart to read as once it hits boost its jsut watch were you are going and pick the next gear. The wheelspin into second lasts for about 4 seconds with loots of opposite lock.

[Clint32]

If i email you some pics joel could you post them for me:uh-huh:

[Cubes]

No Probs

[Clint32]

Joel pm me email address and i will try and scan printout when i get home.

The turbo has a 0.6 A/R comp housing with a 54mm comp wheel from memory, this was new. The exhaust housing is 0.6a/r with a 58mm wheel, the big wheel is a problem i think. But you can not expect much else with a largish plain bearing turbo on a 2l motor, this is the price you pay for being for trying to do things cheaply and not buying a HKS or new garret turbo. But it does make the power and the lag dosent matter in a streight line and i will just have to use the handling to go fast through the twisties.

[Clint32]

On the way home i took more notice of the boost, it starts building from 3-3500 and is at full boost by about 4500 and thats when the fun starts. I need new tyres now.

We will see howstrong the RB20 engine and box is now, im not afraid to rev it to 8grand and shove it in the next gear, 3rd gear is already started crunching.

PS i looked at my last dyno run on the same dyno, with exhaust, front mount air filter, fuel pump and 1 bar i made 136 running really rich, i only made a 100rwkw imporvement.

[Freebaggin]

That's excellent stuff mate, well done. Would be a blast to drive.

[Cubes]

not afraid hey..

So was it a bit of a shock when you first nailed second or third gear?

[Clint32]

Yeah the first time i nailed it into 2nd it just startd spinning the wheels so i was taking up the two lanes when i pulled onto Port Waikfield road, it all good fun.

[whatsisname]

Awesome results mate! 235rwkw in a 32 is serious grunt :uh-huh: Martin comes up with the goods yet again

Most stock Japanese injectors can handle quite a bit of extra f/pressure, if/when it's needed. I've heard figures of 90+psi without a drama!

[Cubes]

Hey Matt, what limited you to only 13psi or is any more out of the effiency range of the turbo?

[whatsisname]

Originally posted by Clint32

On the way home i took more notice of the boost, it starts building from 3-3500 and is at full boost by about 4500 and thats when the fun starts.

I need new tyres now.

I only made a 100rwkw imporvement.

Your turbo has ~800-1000rpm more lag than my combo. About what I'd expect given my extra 500cc & T3/T4.

For serious traction (hills/drags etc...) I'd go get those RE540S mate. For daily use the FM901's are the go.

100rwkw gain, ahhh you'd hardly notice that the road :burnout:

[whatsisname]

Originally posted by -Joel-

Hey Matt, what limited you to only 13psi or is any more out of the effiency range of the turbo?

Well nothing really! 13-14psi it about as safe as I can get 16psi is the limit on my stock injectors @ the current f/pressure (hit "max duty" @ 16psi 7000+rpm).

I could go & up the f/pressure "again" & then wind the boost to 15-16+psi. I'd say my turbo is good for a genuine 450-500hp(fly) @ the absolute maximum. But to be totally honest I'd rather play it a tad safe & wait until I get bigger injectors.

[Cubes]

Who built your turbo again? You told me but i can't remember.

That is definately a well built turbo And really for that sort of power the lag is bugger all.