twin turbo 7mgte
- Thread starter Evanderh
- Start date
i dont know the specifics about it, but i do know i read a thread on here about someone who did. try google!?
GReddy, SARD, and HKS all made twin turbo sets for the Supra.
A frigging piping nightmare,
and I doubt if you can get any more power than you can from
a good single turbo, such as a T88, or T51Z.
But the Bling factor is fantastic !!
They usually had very small turbos, like TD-05s
You see the manifolds pop-up on eBay once in a while.
HKS had both tube, and cast iron manifolds.
A frigging piping nightmare,
and I doubt if you can get any more power than you can from
a good single turbo, such as a T88, or T51Z.
But the Bling factor is fantastic !!
They usually had very small turbos, like TD-05s
You see the manifolds pop-up on eBay once in a while.
HKS had both tube, and cast iron manifolds.
ah ok thanks guys but i think im just going to go with a single turbo but i big ass one lol i just bought a manifold for a single turbo. sincle i already have all the piping and an intercooler. prolly be easier to do that then all that other piping for twin lol.
You don't want to bore the block unless you absolutely have to, like in the case that the clearances are out of spec from what is recommended in the TSRM.
Evanderh;977310 said:
Evanderh;977356 said:
Nice. Big single all the way man... doing 800hp on a twins setup will be a giant PITA... not impossible, but a seemingly neverending headache. A guy on Celicasupra.com did a twin turbo 7M setup, it's teh badass. Everyone told him he's crazy, but he did it anyway... almost lost his sanity in the process.
i agree with SS5000, overboring for bigger pistons will weaken the block, making those kind of power levels harder to sustain. a 0.02" overbore will give negligable hp gains from displacement in the overall scheme of things, I think.
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Why should it be such a big problem going twin turbo on a 7M? 1JZ is twin turbo.
I have a HKS twin turbo cast iron manifold. It's T3 flanged. It's from a car that did 450 hp for almost 15 years before it was rebuild. Very solide build.
Once my economy recovers after my complete rebuild I'll be going twin turbo 7M.
I think the key is to choose the right size turbos and don't go cheap on them either.
I have a HKS twin turbo cast iron manifold. It's T3 flanged. It's from a car that did 450 hp for almost 15 years before it was rebuild. Very solide build.
Once my economy recovers after my complete rebuild I'll be going twin turbo 7M.
I think the key is to choose the right size turbos and don't go cheap on them either.
The stock twins are rather small, versus aftermarket twins being larger, typically not sharing the same down pipe until further down the exhaust stream, two sets of hot-side intercooler pipes to deal with and plumb, versus a stock cast y-pipe setup that a 1 or 2J has, oil line rounting, aftermarket wastegate setup (you know you're going to push them 
), need I keep going?
That's just a few of the reason why many ditch the twin idea and go with a more simple, more efficient single setup.
As far as block prep goes, the stock block will handle what you can throw at it, just make sure you prep it well. A forged piston, specified in stock size, is typically overbored slightly to allow for proper ring seal after the bore is performed to the block. Research the brands of pistons yourself to find out the actuall specs of them.
The head gask prep is where it's at if you want to keep something that powerful from leaking into other cylinders and the water jackets.
), need I keep going?That's just a few of the reason why many ditch the twin idea and go with a more simple, more efficient single setup.
As far as block prep goes, the stock block will handle what you can throw at it, just make sure you prep it well. A forged piston, specified in stock size, is typically overbored slightly to allow for proper ring seal after the bore is performed to the block. Research the brands of pistons yourself to find out the actuall specs of them.
The head gask prep is where it's at if you want to keep something that powerful from leaking into other cylinders and the water jackets.
1JZ parts don't fit on a 7M.
The piping for a TT setup is a nightmare - and, other than the exhaust manifold, has to be completely custom built on a 7M. It's even worse if you want to run them sequential. All this custom work would cost a lot of extra $$$ - in the thousands.
That said, if you have the wallet to back it up, the end result is impressive. Huge power levels with nice spool times and extremely wide power curves is tough to complain about.
If you want to know what to do to your engine to make it survive, go to http://www.7mpower.com and read the engine build up article written by Will Neely.
The piping for a TT setup is a nightmare - and, other than the exhaust manifold, has to be completely custom built on a 7M. It's even worse if you want to run them sequential. All this custom work would cost a lot of extra $$$ - in the thousands.
That said, if you have the wallet to back it up, the end result is impressive. Huge power levels with nice spool times and extremely wide power curves is tough to complain about.
If you want to know what to do to your engine to make it survive, go to http://www.7mpower.com and read the engine build up article written by Will Neely.
GrimJack;977406 said:
Well who would have thought? Over 700HP on a stock, ported intake manifold? :aigo:
Does it bug anyone else when people come on the forum with their new supra and ask what they need to make 500 hp, 700 hp, 800 hp? I say search the forums/wed for about 6 months and then ask what you dont know... IMO.
You get used to it after a while. The part that's really annoying is that 99% of the people who ask this won't actually do it, and have no clue what driving a 600hp car is like.1992supraman;977454 said:
MDCmotorsports;977366 said:
Make sure to only actually hook one up, the other is just there to add to the bling factor.