manifold advice?
 

I'm in the market for a new exhaust mani and I was wondering if anybody had any good advice. I've got a ported 2g mani and it's got a small crack. I'm running a pte 50 trim and I want something big to help spool up.

Re: manifold advice?
 

If you are looking tubular DNP has worked pretty well for us, but for Mitsu bolt on the FP cast is a great option...

Chris

Re: manifold advice?
 

Well the dnp wouldn't work because I'm running a wg off the o2 housing already. I really like the FPs, how much are you guys selling them for? They are usually pretty pricey i though

Re: manifold advice?
 

They had some crazy deal running on them so its cheaper than the normal $325, do me a favor and shoot me a pm and I can touch base with them Monday and get you a price, thanks!

Re: manifold advice?
 

I highly recommend this from personal esperience http://www.slowboyracing.com/estore/...cat=588&page=1

wont ever crack, can use a factory heat shield, cheap, it will never be the restriction in your turbo system

Re: manifold advice?
 

^Yea that looks nice. I really have no need for the wg flange, but I do like how it leaves the option open. I'll keep this in mind.

Re: manifold advice?
 

Just on principle alone you should buy an FP product before a slowboy one.

Re: manifold advice?
 

There are reports all over the net of Slowboy manifolds cracking, even the newest versions.

+1 for the FP manifold

Re: manifold advice?
 

Yea I think I'll just keep an eye open for a used fp mani. Thanks guys

Re: manifold advice?
 

Why would you recommend anything from them?

Re: manifold advice?
 

We have not had a single one of the new manifolds crack in over a year. The old ones did crack and we replaced every single one that was brought back to us.

Re: manifold advice?
 

^but if I buy a mani from you I might get banned LOL or ppl will hate me haha jk

and the other thing is, you guys only have one manifold out from what I see. I don't really need the extra flange for a wg considering I'm running mine off the o2 housing. So it kinda seems like I might as well just get a nicely ported 2g or something.

Re: manifold advice?
 

Yea some people on here hate me but it doesnt bother me. I just try to answer tech questions and sale the occasional part.

Re: manifold advice?
 

Yea I was kidding about that. Sure some ppl may hate sbr but I was way too lazy to read that whole thread and therefore I don't really know why nor do I really care. But in the end, weather I hate you guys or not, you don't really have a manifold for my specific application. Thanks though.

Re: manifold advice?
 

You want a big manifold or a big turbo? Bigger and longer runners make spoolup worse.

Re: manifold advice?
 

Yep, you want the smallest manifold available to help spoolup.

Re: manifold advice?
 

I meant big ports sorry.

Re: manifold advice?
 

You forgot to add in your warranty disclaimer. It's always entertaining to look at the pictures on Toonerz of SBR manifolds cracking.

Re: manifold advice?
 

Big ports/runners usually equal more lag. Most of the weld-el manifolds out there have bigger inner diameter runners than the outer diameter of the manifold that I had on my car when it 700whp. I have seen some Honda eBay turbo manifolds lately that have runners that are much bigger than the weld-el manifolds, they look like they were made to support 2000whp, but are normally found on 250whp cars. In general, anything before the turbo or after the turbo that is bigger will give less lag, like bigger downpipe/exhaust and bigger air intake pipe and filter. While anything made bigger in the loop from the turbo back to the turbo, will give more lag, like FMIC, intake manifold, ported head, aftermarket intake manifold, etc(except for displacement). I have seen 1000RPM quicker spool on a car from going from a fancy longer runner topmount turbo manifold top to a non-equal length shorties manifold and topend power wasn't any different.

Re: manifold advice?
 

We dont have a " warranty disclamer ". If it cracks bring it back to us and we will give you a new one. Simple as that. Sorry you have a bad opinion of us because the old sales guys " screwed you over ".

Re: manifold advice?
 

Are we going back to this bullshit excuse again? Salesmen are not lone entities, they are a part of a company. The company is responsible for their actions. Period, end of story. Don't think so? Talk to a lawyer.

Re: manifold advice?
 

Here we go again. Round two

Re: manifold advice?
 

So shane, are you saying that smaller ports would increase spool up???

Re: manifold advice?
 

Thanks but no thanks. sbr is already done in this thread considering they don't have a mani for my app. Lets leave it at that

Re: manifold advice?
 

What "ports" are you referring to? I think you mean runners in the exhaust manifold. Smaller runners will spool a turbo quicker, larger runners will take longer to spool. Just like Shane said, increasing the size of anything between the compressor housing and turbine housing will increase lag.

Re: manifold advice?
 

Yea sorry, runners is what I meant. So if bigger runners adds lag why do people ever upgrade manis if it just makes their turbo more laggy? Last time I checked laggy turbos suck teh balls. I read that other guys thread about a 1g mani with his 14b and that made some sense.

What I got from it was basically, you want an exhaust mani thats big enough to keep up with the turbo up top, and small enough to spool up down low.

Re: manifold advice?
 

Yes, you are right. A stock runner sized manifold is going to create a restriction on a large turbo. FWIW, I am running a ported 2g manifold on my car.

Re: manifold advice?
 

Fwiw=?

Re: manifold advice?
 

Get a ported EVOIII exhaust manifold. It won't crack and they are available for decent prices.

Re: manifold advice?
 

Most people goto upgraded manifolds because they want to mount a non-mitsu turbo, or they want to be blingin, or they want to run an external wastegate, or they want to try to get more topend power. Pretty much in that order. If it wasn't for the power of bling without regard for spoolup or cracking then DNP wouldn't still be in business.

Re: manifold advice?
 

kracka i like the EvoIIIs but is the design really that much better than the 2gs? Or I guess, whats the main difference? The big thing I like is I'm running an evoIII head with a lightly ported intake mani to match the head and if I could get an evoIII exhaust mani and have that perfect match all the way through I think that'd be best. My only thing is whats the main diff between the 2g and evoIII mani?

And thanks shane, I love how you always chime into my simple threads and actually explain how and why something is. Hell I'll admit I thought a shorter, yet bigger runner would increase spool up because there would be no restriction. But I totally disregarded the fact that force is what really spins the turbine. The sad thing is, I know a ton of people that would think to get a tubular because year they are ballin and they just look more efficient. Thanks guys

And we all know it takes more force to scew a 5 year old than it does to scew a porn star right. haha just kidding...


..but seriously LOL

Re: manifold advice?
 

For What It's Worth. Basically I made 450 whp at 25 psi on mine, if you are not planning on making more power than that, then I wouldn't worry about upgrading past a 2g manifold. If you are planning on going to a full garrett, then that is a different story.

Re: manifold advice?
 

^Sweet thanks. That really helps. I think I'm going to keep an eye out for an evoIII mani just to keep everything equal throughout. I remember reading something about this a while back that it's good to keep everything the same size. If mitsu made it that way to start out with it was probably for a good reson.

Re: manifold advice?
 

I think the only difference between a 2g and EvoIII manifold is that the evo III already has a 7cm opening for the turbo, the rest is the same. If the 2g one is ported, then it should be the same.

Re: manifold advice?
 

FP FTW.
I have an FP and i love, i could tell right away that i gained more pull up top.

Re: manifold advice?
 

I've have a GT Manifold from DSM-Parts with EGT bung that seems to work fine.

PM me for details if interested.

Re: manifold advice?
 

Yo Jet, if the GT mani has a 7 cm outlet isn't it the same thing as an evoIII?

Re: manifold advice?
 

Not made out of the same material. Stay with what is proven.

Re: manifold advice?
 

Yea cus didn't I hear something about the GTs cracking?

Re: manifold advice?
 

There are reasons why FP products are generally higher priced that everyone else's. Buy the FP manifold and call it good, you won't be disappointed. You're only wasting time and money if you buy SBR shit or any of the GT manifolds. Go read some of the posts on Toonerz by Robert Young discussing his FP manifold, it's not all about quality of casting, it's also about fluid dynamics.