Rb30 Manifold On Rb25

[jet2nv]

Gday all after some longggg hunting im thinking of seeing anyone thoughts on modifying a rb30 turbo exhaust manfiold to suit a rb25 as i really want to stay low mount with my rb25/30 not to keen running a external gate on a stock rb25 manifold as i dont think i will hit the 320rwkw mark on lowish boost hence after looking at the rb30 turbo manifolds it looks like it would be perfect to fit a wastegate right on top of the merge collector

just looking to see how much roughly this would cost and if its just a matter of cutting and re welding the flange to suit the rb25 im trying to keep my manifold budget under 450 and cant really find a hks manifold around for this

any help would be great cheers

[Simon-S14]

bolt spacing and port spacing are different. highly doublt you'll get one and then modifed with new flange for under 450.

whats wrong with the OEM rb25 manifold and external gate idea?

[JonnoHR31]

you wont have a proper external gate setup for under $450, simple as that.

the hks manifolds can be had for around 600, but as with any aftermarket manifold theres other costs in getting it all together and running.

[zebra]

Gate alone is $400+

[jet2nv]

ive found a few hks manifolds for 400 but they sell before i get a chance to buy them

all i want to know is if i get the exhaust flange on the rb30et manifold changed to a rb25 are all the spacing correct is it only 2 or 3 flanges that need to be changed also will it fit and will it flow better then a stock rb25 manifold

i can get a vl turbo manifold for 100 another 150 to get a wastegate flange welded and the flanges changed

[jet2nv]

i should of stated only after a price and will it all work i have everything else ie GATE

[jet2nv]

stock rb25s ive been told and after reading a lot of dyno results they hit a brick wall around 280-30rwkw mark im currently aiming for 320rwkw atm then push it to 350rwkw on my rb25/30

i have a highmount but would love to try something different with the rb30 idea

[JonnoHR31]

wait your talking about a standard vlt manifold? they flow the same if not worse than a standard 25 manifold. absolute waste of time modifying it to fit.

you cant set it up to handle 350rwkw with a budget of only $450. either use a standard manifold and setlle for less power or keep saving and do it properly

[jet2nv]

ive seen alot of guys including my mates make well over 320 out of a stock vlt manifold my old hr31 coupe made that out of a rb30

my $450 budget is only for a manifold nothing else

if i cant get 320rwkw out of a low mount manifold

i will keep my highmount and settle with that

but would love a low mount

[zebra]

whats with the Magical 320rwkws.

and its been done quite a few times on a stock rb25 exhaust manifold

[jet2nv]

really on a stock 25 manifold???

all the results ive seen on the rb25/30 thread i couldnt see more then 2 on there

320rwkw is a personal goal im trying to reach i want more then what ive had before ive had a hr31 coupe with 310rwkw a charged 355 with 308rwkw its just something i want

no idea what a r33 with a rb25/30 fitted with a gt3582r with 320rwkw will be like to drive on the road but hey thats the fun part

it just came across my mind i wonder if a rb30 manifold could fit but if it wont its ok ill stay highmount if i cant find anything else

only reason why i like the 30 idea is it looked alot like the hks manifold design

[Simon-S14]

wheres this vlt stock manifold for 100? i need one asap

[methz]

why would u even bother?

i done over 300rwkw on stock rb25 manifold and 50mm gate setup.

[jangles]

weld the gate to the turbo housing, ultimate control and wont have to touch manifold

[jet2nv]

ive got a few vlt manifolds i bought for $100 check calaisturbo they are always for sale there

do u have any dyno sheets on your over 300rwkw on a stock manifold