James Rear Mount Equal Length Tubular Headers - Test fitted to car

Re: Tubular Headers to keep turbo in stock location

updates mate!

Re: Tubular Headers to keep turbo in stock location

Hey Nivo

Sorry about the lack of progress

I have been having issues getting my car running properly to get it on the dyno.

Old manifolds on Dyno need to happen before new manifolds get fitted so that I can have a decent comparison to the old vs new setup.

It could be a little while before these are on the car, but good things take time…keep on waiting mate the good will arrive eventually

Re: Tubular Headers to keep turbo in stock location

still not quite invisioning how the turbo gets mounted. I see someone said the turbo is on the other side over there, but then I look at the manifold you used a comparison and it looks like my stock manifold… soooo where is the turbo going?

also. if my eyes are deceiving me, and you guys do have the turbos on the other side, wouldn't that make a twin turbo kit pretty easy if we just got manifolds from your side of the planet and bolted them on? LOL.

just wondering.

Re: Tubular Headers to keep turbo in stock location

The turbo is on the same side, our passenger side, your drivers side. If it was on the other side then a lot of stuff would have to be moved

Re: Tubular Headers to keep turbo in stock location

Its just a confusing looking picture,

turbo is mounted on the same side, what it will do is ON A RHD CAR the driver side manifold will cross over much the same way as OEM does and follow along on to a turbo flange.

then the other manifold will merge into it using a Y merge collector of some sort, it will merge in to be in the approximate place to attempt to keep lengths equal.

don't make me bust out a CAD Model :-D

Re: Tubular Headers to keep turbo in stock location

please do.

Re: Tubular Headers to keep turbo in stock location

All of this information is incorrect. Firefox is talking out of his ass.

You will see a huge gain in upper RPM power (if you have the heads/intake manifold to support it) as well as a completely different sound from the car. Stock manifolds suck ass, and sound like ass. Take Milo's car as proof.

Re: Tubular Headers to keep turbo in stock location

I agree.

These manifolds should flow much better than stock. I am a bit sad to see you didn't chose an externally gated and divided turbine, but perhaps on your next upgrade.

James, I know your a CAD guy. Why not do some flow testing in Cosmos or similar?

Re: Tubular Headers to keep turbo in stock location

[quote]StreetFighter wrote: i think he stated he only wanted like 10 psi or something

i was saying you would be better off having the stock manifold at that power level for spool time.

the stock shit would not be restrictive at 10psi. the thick cast low internal volume stock manifolds would help lower the boost threshold because more heat is retained (more cfm for the same mass of air helping to boost sooner.)


i could see making custom manifolds like that if he wanted 15+ psi on a larger turbo.

Re: Tubular Headers to keep turbo in stock location

Aren't you the one trying to use VQ40 manifolds for a twin turbo setup? And planning to break 1000 horsepower? LOL

James, listen to streetfighter. He knows his stuff :-D

Re: Tubular Headers to keep turbo in stock location

Umm yeah, where to begin.............


Firefox > whatever soon enough I will have some numbers to prove people right or wrong so leave it at that.

Mike > Thanks for some good info over the past while in a few different topics and your right my next upgrade will be an external and a new exhaust housing for that turbo
( broke broke broke right now and I can't even get it to run on all 6 cylinders properly )
That RX7 hot side is a twin scroll with twin internal gates so it should control boost much better than your average internal gate setup

Street fighter > thanks buddy, I'm running the schneider cam grind everybody goes for and my heads are ported with 3 angle valve job back cut & swirl polished with the lower intake manifold all hand finished like the cylinder heads.
rebuilt stock bottom end to get things setup and going good before i move to a fully forged vg33.( long term )

I promised myself not to cut up and build an intake plenum Until I have finished the exhaust manifolds

Re: Tubular Headers to keep turbo in stock location

less YAP, more CAD. :nanan?re

Re: Tubular Headers to keep turbo in stock location

[quote]StreetFighter wrote: and that is what the VG30 should sound like… the log manifolds with the crossover pipe going into the drivers side manifold just don't sound so good.

Re: Tubular Headers to keep turbo in stock location

yeah, the VG-E sounds awesome with tubular manifolds.
most only know the VG-E by its signature "dying moose" sound with the log mani's.

james, i'd consider purchasing a set from you.

Re: Tubular Headers to keep turbo in stock location

[quote]firefox wrote: Lets see, listen to the guy using VQ40 manifolds and wanting to make 1000 horspower or a guy that works for Boost Logic making 700 horsepower out of a compound system, or the guy making 700 horsepower out of a parallel twin VG and soon to be a 1000....Hmm I wonder. And to top it all off you referenced it to the amount of boost he is going to run. LOL

Bigger is not always better, but he will be just fine. Hes not hurting spool any. However, the manifold should be coated.