Ways To Improve Response

[R31Nismoid]

car is stock as a rock with 77 thousand on the clock so it needs love

who does a decent stroker so i can do some research ?

Ok so then add another 10k as you need injectors, AFM, ECU, clutch, exhaust, oil cooler, radiators, ducting, brakes and then the labour to fit the turbos and fixing up the small bits along the way as well.

To go from stock car to a stroked 400krw track machine, that is reliable and actually consistently fast - 35k is the start point, and no, I'm not joking.

[GTRsean]

Cha ching....a lot of people have spent that much, and more over the years of skyline(s) ownership.....

[vorse]

Ok so then add another 10k as you need injectors, AFM, ECU, clutch, exhaust, oil cooler, radiators, ducting, brakes and then the labour to fit the turbos and fixing up the small bits along the way as well.

To go from stock car to a stroked 400krw track machine, that is reliable and actually consistently fast - 35k is the start point, and no, I'm not joking.

the plot thickens did the cooler my self already not sure on the state of the exhaust some sort of 5gine 5 inch tip

[R31Nismoid]

Yeah 5" at the end, might have a 2.5 restrictor in the middle (lots of Jap exhausts do)

[vorse]

Yeah 5" at the end, might have a 2.5 restrictor in the middle (lots of Jap exhausts do)

i was worried about this any brand i should be looking at to replace it or go custom made?

is there any advantage to using TI over normal stainless apart from weight

is the one inch for every 100 kw rule gosphel ?

dump pipe and exhaust manifold sizing ?

[R31Nismoid]

Oh whops...

400rwkw = 4" baby, and @ 4" you'll need to go custom and ensure it's tucked close as you can for height issues. Ti is just weight.

If you are going -5s stock manifolds are fine, as are the turbos as they come.

[vorse]

sweet i was going to price in a set of the tomei extreme 4 inch manifolds any idea what the dimensions on the stock ones are?

this is so good having all my questions answered

[R31Nismoid]

The Tomei ones crack, don't go there. Stock cast ones are the way.

[vorse]

asked a question saved a grand good night so far lol

is there such thing as to much injector ?

[Piggaz]

asked a question saved a grand good night so far lol

is there such thing as to much injector ?

ID 1000's if staying 98 or 2000's if going E85.

[KING87]

Oh whops...

400rwkw = 4" baby, and @ 4" you'll need to go custom and ensure it's tucked close as you can for height issues. Ti is just weight.

If you are going -5s stock manifolds are fine, as are the turbos as they come.

Any benefits of porting the stock manifolds? Just in the top end?

[R31Nismoid]

Might be, no one has done on car testing back to back. Only flow bench and people seem to make the power regardless.

So won't hurt and if you do - never take too much, will make it weak and then cracking can occur

[KING87]

Ok thanks. I am getting the manifolds ported and changing dumps from HKS to midori at the same time so I will post some results when I'm done for those interested. (On 2530's)

[Ryno]

If you want better response, then the most cost effective way of doing this is swapping the exhaust manifold to a tuned length type with 1" runners. I have just done this conversion to my RB25 with GTRS turbo and the response is as good as the stock ceramic turbo, but I make more power everywhere (with over 255 rwkw at the top end).

R32Nismoid mentioned earlier in this thread about the 1" runners choking your top end power, that's nonsense - he clearly has no experience with this kind of manifold.

Speak to Nathan Weissel at O2 Autosports, his drift car has an RB26 with a big single, it runs one of these manifolds (albeit in twin scroll and with twin wastegates) that makes 424 rwkw and sees boost in the range you are looking for.

[sky30]

If you want better response, then the most cost effective way of doing this is swapping the exhaust manifold to a tuned length type with 1" runners. I have just done this conversion to my RB25 with GTRS turbo and the response is as good as the stock ceramic turbo, but I make more power everywhere (with over 255 rwkw at the top end).

R32Nismoid mentioned earlier in this thread about the 1" runners choking your top end power, that's nonsense - he clearly has no experience with this kind of manifold.

Speak to Nathan Weissel at O2 Autosports, his drift car has an RB26 with a big single, it runs one of these manifolds (albeit in twin scroll and with twin wastegates) that makes 424 rwkw and sees boost in the range you are looking for.

What turbo?

[R31Nismoid]

R32Nismoid mentioned earlier in this thread about the 1" runners choking your top end power, that's nonsense - he clearly has no experience with this kind of manifold.

Speak to Nathan Weissel at O2 Autosports, his drift car has an RB26 with a big single, it runs one of these manifolds (albeit in twin scroll and with twin wastegates) that makes 424 rwkw and sees boost in the range you are looking for.

Nice try... But... Your entire comment is nonsense pal as this is what i said:

It's always interesting as the turbine housing is usually always where the restriction is, so promoting flow outta the head larger/smaller runners - would be interesting to see how much response you would actually get.

Yep clearly said 1" runners on the exhaust manifold would hurt top end

What turbo?

And fuel

And the testing to show differences between runner types

etc etc.

[vorse]

was waiting for that^^^

you just got lawyered

[BLITZ-26]

In reading this topic I did notice that my blitz manifold runners seemed a bit smaller than my mate's 6 boost manifold Mabel thru jax manifolds have smaller runners ?

[BLITZ-26]

Dam I hate my phone and it's dum auto correct some times :s

[Ryno]

^ and with good reason, making them response driven from the exhaust side maybe hurts too much in the top end?

That was the comment I was referencing in my above post, but maybe I was a bit harsh as you did put a question mark on the end.