R34 Gtr Build

[BOBBYr34]

So the short answer is that MAF provides you with a more stable tune. Less variation due to subtle changes in air temp and atmospheric pressures. I'm probably switching back to a 4" MAF and a ford lightning sensor with my next setup for that exact reason.

That is unless your going to be doing something radical that uses MAF and MAP...

Tuning with MAF gives the car a more accurate tune and response is a lot better.

Yes I will be running MAF and MAP and the MAF will help make table for MAP . Using a Motec you can almost do anything .

Don't go to big of a MAF as idle will be an issue .

On a another note we tuned a 6466 turbo it made 600kws on 35psi very impressed with that turbo

[GTRNUR]

Was that 6466 result on a 2.6 Bobby? My goal is to make 500kw atw with the new setup, but I'd like to do it easy, perhaps around 22-25psi should be possible with my displacement and head setup.

What size and configuration turbine did you use too?

Edited June 30, 2013 by GTRNUR

[BOBBYr34]

Was that 6466 result on a 2.6 Bobby? My goal is to make 500kw atw with the new setup, but I'd like to do it easy, perhaps around 22-25psi should be possible with my displacement and head setup.

What size and configuration turbine did you use too?

It was on a 2.6l .

The turbo was a customers choice exducer was only 86mm .

You will need some boost to make it all happen .

[Piggaz]

How much power are you expecting/aiming for, Bobby?

[BOBBYr34]

How much power are you expecting/aiming for, Bobby?

500kws power does not state how fast a car is . As these powers are peak out put . More important is how quick it gets there

[dkbcleaner]

Hey Bobby love the build! Enjoyed following it all this time.

Any reason you didnt use vcam? Wouldnt it help more in achieving your goal?

[NYTSKY]

Ill have a beard as long as yours Bob before this thing is turned over

[BOBBYr34]

Hey Bobby love the build! Enjoyed following it all this time.

Any reason you didnt use vcam? Wouldnt it help more in achieving your goal?

Yes a v cam would help the response however at the time of the build 6 years ago it was not considered . However the design is setup on a way that it will respond like v cam .

[BOBBYr34]

Ill have a beard as long as yours Bob before this thing is turned over

If you can grow your beard that long car is your lol

[Shane_954]

Tuning with MAF gives the car a more accurate tune and response is a lot better.

Yes I will be running MAF and MAP and the MAF will help make table for MAP . Using a Motec you can almost do anything .

Don't go to big of a MAF as idle will be an issue .

On a another note we tuned a 6466 turbo it made 600kws on 35psi very impressed with that turbo

Anymore info on the 2.6 with the 6466? Comp ratio? Headwork?

[BOBBYr34]

Anymore info on the 2.6 with the 6466? Comp ratio? Headwork?

Go to FaceBook " just engine management"

[Shane_954]

Not much info on there, would be nice to see a dyno graph?

[Daleo]

Not much info on there, would be nice to see a dyno graph?

Bahahahahaha!

Yeah; hardly any info.

Patience is a virtue.

[White GTS-T]

Updates?

[34GeeTeeTee]

Updates?

If you are on Facebook you will probably see more updates on Bobbys page mate, he is a busy man

[BOBBYr34]

"bobby at JEM '' FB

[Lithium]

500kws power does not state how fast a car is . As these powers are peak out put . More important is how quick it gets there

Are you still using a 72mm Turbonetics turbo to do it? I agree with "500kw doesn't state how fast a car is" sentiment, but the brand "Turbonetics" and 72mm each spell "lag" to me - ie, not exactly the quickest 500kw you could get

Otherwise, amazing build!! Look forward to seeing how this comes out

[BOBBYr34]

Are you still using a 72mm Turbonetics turbo to do it? I agree with "500kw doesn't state how fast a car is" sentiment, but the brand "Turbonetics" and 72mm each spell "lag" to me - ie, not exactly the quickest 500kw you could get

Otherwise, amazing build!! Look forward to seeing how this comes out

"T70 not T72 entry hole 68mm of the turbo". NO LAG well not as much as any other car that has a turbo this size. It seems you know the formula for a quick 500kw??? please tell me.

Thank you

[black bnr32]

what size is the turbine exducer?

[Lithium]

"T70 not T72 entry hole 68mm of the turbo". NO LAG well not as much as any other car that has a turbo this size. It seems you know the formula for a quick 500kw??? please tell me.

I'll re-iterate, I am blown away with the whole build - I didn't mean to offend, and certainly don't mean to say I could do it better... at least when it comes to the engine build, fabrication etc. I've never built an RB to make that power (on that note are you going to be running E85?) so far bit it from me to question anything there. The only thing which did make me raise an eyebrow was the T70 based turbo, and hence me asking as I figured you'd either say "wink wink nudge nudge" implying that its hardly an off the shelf T70 if not say what has been done there... because otherwise it is just using an old Turbonetics turbo on what is otherwise an amazing build, and when the turbo has in ways the biggest influence on how the engine is going to be able to perform given most of the good stuff will be relying on the turbocharger to provide extra air mass in a timely fashion.

The reason I say that is I've experienced first hand an RB30 Skyline running a Turbonetics T70 and the thing was horrible in spool and response considering it had a 3litre engine, by comparison I've also experienced a GTR with a T04Z on an RB30DET making similar power to the T70 car and due to expectations of what a 3litre 450+awkw GTR being set by the Turbonetics one I nearly shat myself when the T04Z tried to rip tarmac up at rpm where the T70 one felt like it had just realised it had a turbo and was sheepishly asking it whether it could give it some decent boost at some point, please. The ride in the T70 Skyline was my first experience of an RB30 and I actually didn't think too much of their advantage over a 2.6 for some time because of the experience, so discovering that it was actually nothing to do with the engine so much as the air pump hobbling it... and that is one of the reasons I decided I *really* get my teeth into trying to understand dynamics between engines and the things attached to them as while that was an extreme case, it does show that the turbo can make an otherwise crap setup awesome and an awesome setup crap.

So if you're going to take that line, a formula for a quicker 500kw car is do exactly what you are doing - but put a better turbo on it, because unless there is some very sneaky stuff you have done to the Turbonetics turbo which essentially would mean calling it a Turbonetics T70 would be very misleading and I'd really have no idea of it's potential... then I would be completely surprised to see a result which no other turbo could match on your setup. I like surprises, as it means there is more for me to learn and more ways to go fast - and I love seeing good results, which is the only reason I questioned it.

Looking forward to seeing how it goes, anyway