has anyone swaped the ht-12 cores with other turbos ( i know m2 used t-25 bb turbo to replace the hitachis).

Is it possible to do this using garrett cores or any other cores?

does anyone have pics of the ht-12 cores or manifold assembly?

 

www.BNRSupercars.com

 

So what's up with BNR Supercars that they don't bother to provide some information about the services they provide? Pretty hard to do comparison shopping without any details.

 

He's a one man operation, and doesnt have much time to get on the net. Call the # on his site. Also, there is a some good info in this thread, Bryan Nickell (as in BNR) posts as Feared7, it's a long thread but if you are interested I recommend reading it.

https://www.rx7club.com/showthread.p...&highlight=bnr

 

im interested in using either garrett gt-25 or gt-28r duall bb turbos


were trying to re-create the m2 turbos.

shooting for great low to mid range hp & tq

 

sounds good.let us know when theire ready and how much they will be.
Id love to have some sequential bb twins.

 

sorry man its for a friends race car

 

i see.well let me know how much this venture ends up costing you guys. that way others will know how much it will cost to do it ourselves.

 

While this is certainly possible, between the custom manifold and the dual ball bearing upgrade, you are looking at spending some cash, as I am sure you're aware .

 

how much were the m2 twins when they were available?

 

you need a custom manifold huh?
I thought all m2 did was port the turbine housing s and put in the bb gt25 cartriges.
The turbos went for 3500 bucks I believe.But having better spool up than the stockers would friggin rock.

 

You're right, they did. It just seems like if you are going to all that trouble, getting rid of the main restriction (the stock turbine housing) would make sense.

 

I know LT1-7 had a group buy on a twin gt28rs setup but no one wanted to pay for a kit without seeing some numbers. If I recall hes just going to go ahead with making the kit so people can see some numbers from the kit. I'm also in the starting stages of a twin setup using the GT2871R's. If everything works out well when im done fabbin everything up I'd assume LT1-7 would be sellin a kit using these turbo's if people are interested.

-Alex

 

so the T-25 cartridge and the stock HT12 housings are pretty compatible?
can the cartridges from the t25 bolt right up to the hitachi housings?

 

yes ,basically

the turbine housings are integrated into the manifold ,so the only thing to doo is machine them out to fit the gt-25 turbine blade

 

how much are the gt 25 bb cartriges running for anyways?

 

well the whole turbo goes for $750 each

but you can prob. get the compressor and chra for like 600

 

so what exactly is needed to make the gt 25s work in the fd?
the whole turbo or just the compressor and the chra's? and where can you pick these up?
Cause Theres a few local turbo shops around here.I bet I could pick up two gt 25 cartriges and a used set of twins and make some bb sequential twins.

 

Just buy a sweet single. Best bet and cost effective.

 

My twins ran me less than 2 grand installed, and have been proven to run with a GT35R at pump gas levels (17 psi). Perhaps you can pull from your extensive knowledge base and enlighten us all as to what exactly you mean by 'sweet single' .

 

Exactly what I was thinking. Proving once again that there is more than one way to do something right and that not all of us want to follow conventional wisdom. Beauty--and perhaps sweetness--is, after all, in the eye of the beholder.

 

to me it would be worth doing
since two gt 25s will run between 1200 to 1500 for the turbos themselves.How much more could the labor be for adapting the tubines to the stock twins housings? maybe a grand if that.So you have bb twins for 2500 bucks.Not bad at all.

 

wonder what is best gt25r or the gt28r

 

are the gt 25 r and the gt 28r ball bearing turbos?
if so why not couple a primary gt25 with a secondary gt28.

 

impressive but...come on...we all know the upper threshold is much higher with a single.