R34 Gtt Build

[rondofj]

I dont know why some say go for 260rwkw, I have a very snappy delivered 290 and want a bit more, maybe 320-330 will be my sweet spot.

[R31Nismoid]

Does it look factory and was it bolt on?

No.

So that covers that off as most people in that region don't wanna spend, or look too obvious in the law side

[r34unit]

Yeah I do have it on

It also has a hot dog and cannon

It's a little loud but not silly loud !

I'm just worried I won't have enough back pressure.

I'm thinking of buying a turbo with a .63 rear for good mid range power but I'm thinking I might run out of up top fast because theirs to much flow

[Marcus89]

Yeah I do have it on

It also has a hot dog and cannon

It's a little loud but not silly loud !

I'm just worried I won't have enough back pressure.

I'm thinking of buying a turbo with a .63 rear for good mid range power but I'm thinking I might run out of up top fast because theirs to much flow

You don't want backpressure on a turbo car

[Hanaldo]

You don't want back pressure on any car, but let's not turn this into one of those threads...

[AngryRB]

I dont know why some say go for 260rwkw, I have a very snappy delivered 290 and want a bit more, maybe 320-330 will be my sweet spot.

very true, 260kw for me felt like the job was only half done, 320 and the motor feels alive

just dont loose control of the thing when in third and the backend wants to overtake the front .

[34GeeTeeTee]

E85 also masks some of that too.

If you tried it on pump you'd be unlikely to get there

Ah OK, I thought exhaust flow was the same on either fuel... But yes my car only makes 315-320 on pump from memory

[GTSBoy]

Exhaust flow is actually higher on E85 for the same power. That's because ethanol makes more water vapour than petrol does, and there is less oxygen in each water vapour molecule than each CO2 molecule - hence you get more molecules in total. And then if you're making more power (because E85) then you make even more gas volume again. But if perchance the exhaust temperature is lower, then the actual volume will be lower than if it were hot, so you save some velocity and hence reduced friction and pressure loss. There are swings and roundabouts there that you'd need to do the sums on before saying exactly what the expected effect is.

[R31Nismoid]

My point was more than you can still wind timing and boost without detonation even with a restriction where pump would be showing up problems. Plus matt you have separate wastegate, also helps things out

Anyway point overall is 4" is overkill, 3" would also be fine for that power - so either/or.

[r34unit]

So in my case I should have a full 3 inch exhaust

[wedge_r34gtr]

So in my case I should have a full 3 inch exhaust

No, 3inch minium. If you have the 4inch, just leave it on...they're just saying it's overkill for the the power expectations.

[AngryRB]

No, 3inch minium. If you have the 4inch, just leave it on...they're just saying it's overkill for the the power expectations.

3inch looks small, better off with 3.5-4inch , cant hurt and possibly spooling might be better with a biggish turbo?

[Joshbigt62r]

Keep the exhaust setup you have. Just buy a hypergear bolton turbo. Buy a nismo drop in full pump, injectors of your choice. And a nistune/PFC with z32 afm. Npc single plate. And be on your way. Remember with upgraded power you will need good tyres suspension brakes to.

[r34unit]

still undecided if i should buy a gt3076r with internal gate or external gate and use standard manifold.

[Marcus89]

still undecided if i should buy a gt3076r with internal gate or external gate and use standard manifold.

If you want to keep the standard manifold and a more stock look you cannot go wrong with the hypergear much much easier to fit up and very good results

[r34unit]

will i need a fuel pressure reg ?

[Joshbigt62r]

Would not hurt to use a fuel pressure reg. As for the turbo you really can't go past hypergears turbos theses if you wish to keep the standard manifold. Even aftermaket manifold he has some good options.

[Hanaldo]

If you're using the stock fuel rail then use the stock fuel pressure reg and just get the right size injectors.

[r34unit]

when will i have to do head bolts and head gasket? at what power or psi can a stock rb25 handle safely ?

[AngryRB]

could buy my turbo and go external