my exhaust manifold change and results

[1JZ.747]

just a quick post to tell the results of my exhaust manfiold change/conversion.

after running the 9.9 at wsid months back Kyle from 6boost manifolds contacted me askign would i be interested in testing one of his manifolds. i thought why not. Kyle backed his product well stating he would build me a manifold with the same flange position so i wouldnt have to change my dump pipe or wastegate so that if i didnt find good results i could put my old one back on and nothing would cost me money.

so i took off my manifold sent it up to him, he built his design manifold with the merge collector to suit a split pulse turbo and sent it back. all i had to do was finish off the wastegate plumbing to suit the car as it would have been difficult for him to do it without the car. at this point i had decided to go to twin tial wastegates as they are a contigency sponsor for sport compact and sean (super crown) had found good results running twin gates.

so with no other changes than kyles manifold and the wastegates( which aren't going to change power outputs)and also a minor convertor adjustment we put it on the rollers with the same tune, at 16 psi we picked up 64 rwhp, with a change of 440rwhp to 504 rwhp. we also picked up early spool of about 600 rpm.

i was really happy with this. the car at boost of 28 psi use to make 635rwhp with the rear tires peeling off rubber. the car now makes 721rwhp and it either climbs out of the dyno or smokes the tires like your doing a static burnout (even with 3 110 kilogram guys sitting in the back of it) so i cant say exactly what power it is making due to the wheel spin, i know we have run out of injector (they are 1000CC) at 55 psi of fuel pressure and will need to up them to put any more boost into it.

now the most impressive part in my opinion, since going to the 1.5jz and the GT42R turbo i have struggled to get the car to sixty foot better than a 1.77, when it used to consistantly low 1.6 and a couple of times 1.5'd with the 1j package. the car set a pb sixty foot of 1.51 at jamboree. and thats with a tighter converter which should make sixty footing even slower and harder to do.

now put that 1.51 sixty foot with the rest of my increments from the 9.952 pass at 149.58 mph at wsid and that would equate to a 9.4 et without the increase in power. now thats what gives me a chubby, as racing is what i built this car to do, not win dyno comps.

its safe to say my old exhaust manifold has been sold to a very happy buyer and i will be sticking with the 6boost manifold.

i was skeptical at the results i was being told about kyles manifolds, but i can now first hand recommend to any one serious about going to a single turbo, if you want early response and power, i dont think you can go past the 6boost manifold. sure its more expensive than a china manifold, but you get what you pay for, i believe the 6 boost manifold comes with a life time warranty from cracking, which i have seen plenty of brand name japanese and these chinese manifolds do, even with a lot of bracing.

so that is my exhaust manifold conversion result.

Shane

[ed]

kyles a smart guy, and has contributed to some mind bogging discussions over on my other site... which says alot about what the design premise is behind some of his work. good to see some real world results, and look forward to the ET!!

[Squid]

Wow great result, gotta be happy with that, here I was thinking that manifold design didn't make that much difference on turbo cars... mind you I'm not playing with 500 kw's

[IN 05 NT]

ive got one of kyles old manifold's from his 1g crazy ke70 panel van,

i had full boost at 3500-3700 on 12psi, with the GT30/71r

i also made 195rwkw at 12psi with just the gt30 and the manifold change, all else was stock, injectors/ecu

the manifold is so clean and tidy inside, an the collector design is a piece of ARTWORK,

blake

[BigWorm]

Awesome results. Any chance of some pics comparing the 2 manifolds?

[Rallystanza]

I invested in a 6BOOST Manifold for my 4A 16 Valve Turbo and i am very impressed with the design and contruction of the manifold. Unfortunately I havent had a chance to actually use the running gear its connected to at this stage.

Highly recommended from me.

[celicapain]

Thats a MASSIVE increase just from manifold. sounds like i need to save up some cash.....

[jeffro ra28]

got any contact details for kyle?

[Draven]

when kyle reads this thread.... what's the damage? 600rpm earlier spool made my jeans go tight

[1JZ.747]

if you go to www.6boost.com it has his mobile phone number on it.

[MR 1JZ]

interesting...nice results shane...

I might have to consider one of these suckers for when I get me a big turbo for a 1J

[1JZ.747]

honestly, if i had this with my GT51R on the 1j i reckon it would have high 1.4 sixty footed and got the nine mate. i never imagined an exhaust manifold could make such a difference

[BigWorm]

Hey Shane, got any pics of your old manifold?

[chris davey]

Shit, something else for me to buy

Good post Shane

[Endless]

Damn, those are absolutely awesome results just from a manifold change... i never knew it could make such a difference!

What brand was your old manifold Shane?

Also +1 for pics.