This would be running in parallel.

RE-Amemiya makes a SS exhaust manifold for the stock twins allready (price to be deterimined) and it's available from JT-Imports .

As for the turbo manifold, you can't buy the oem cast iron peice seperately. Inconel would be the perfect material but the price would most likely equal a single turbo conversion. My solution is a SS manifold that would loose the sequetial setup and that the snalis can bolt on to and then bolt the assembly to the exhaust manifold. Ovcourse, it should be heat coated afterwards but if this is a fraction of the cost of replacing the twins and still be street legal is anyone else interested?

The company i've asked to do the project is: Autosportconcepts. My related thread.

 

looks pretty.

 

that seriously couldnt cost much.. there is nothing to it.. you could make one yourself if you can weld..

 

The pic is for the "exhaust" manifold but i've asked Autosportconcepts to creat the twinturbo manifold. I don't have a pic of that. But if you can imagine it might look like a pie symbol. any good sketch artists?

 

No one's interested? I can't be the only one with a cracked turbo manifold? Is everyone buying a new set for $3500?

 

I have no desire to run non-sequentially because of the tradeoffs, so I wouldn't use this manifold with the stock twins, BUT

If someone wre to mate this with the right upgraded twins, such as the BNR or the M2's that are reworked to spool significantly faster and bring the lag back down to sequential levels, you might really have something... particularly in the upper-end power. I think the general consensus is that is the manifold restricting the power potential of some of the newer upgrades.


'Course by the time you pay 2400-3000 bucks for the upgrade, and then a likely 500 for the new manifold, you've bought youself a single turbo kit....

 

I've tried to purchase Garrett GT25R wheels by themselves but no one will sell just the wheels to me. M2 uses GT28 & GT30's and i've even contacted the company that does the conversion for them but they don't respond to any of my emails. I could call but i'm not sure if I would understand their English and their prolly busy puttin shrimp on the barby.

Anyhow, this would prolly be a $500 manifold vs $3500 for a new set of twins and another $200 for heat coating. That's a "huge" price difference! Yes, you loose the sequential setup and gain spool delay but you save $3000 and your engine from overheating o-rings. This should also keep you street legal since you retain the original twin setup.

For the price I paid to rebuild my engine I coulda bought a complete HKS T04Z setup. I can't afford both, so this is a good alternative for now untill I can go single ...maybe GT40R.

 

When you find out how much it is do a post or update this post.

How many people would seriously be interested in this? The reason I ask is I've approached Bryan at BNR numerous times about making a non seq manifold for his upgrades (or for the stock twins) but he doesnt think enough people would buy them. I guess it would depend on price but as you mentioned it would probably be in the $400-$500 range

Its not really a bad deal....especially if you already have the twins and plan on keeping them

STEPHEN

 

i run non-seq. stock twins, and get full boost(1bar) by 3500 rpm .....stock sequential gets full boost(both turbos@10psi) after transition at 4700-5000rpm......as far as i am concerned, i get faster than stock spool.

 

I might consider esp if the rebuilt time come. But, if I were to do 'upgrade' from BNR and add that 4-500 bucks on top of that, the cost will be too close to to4s single. Hell, Even see an add in thepartstrader.com for 1900 buck for t04s single kit.(polly not complete w/ all pipes)

 

Well, I don't have any prices (only guessing) but since an exhaust manifold is about $300-$500 in SS + $150 for heat coating + $500 for nickel TIAL racing wastegate. Well, maybe $1,150 to get your twins working cooler and legal vs $2600 for used Type-R set and $3500 for a new set or GT40R single kit (w/o BOV).

 

Here's some more interest...

https://www.rx7club.com/forum/showth...90#post2977490