Twin turbos and ~500rwhp.

[chrisBoid]

Hi Marty,

thans for the info, you confirm what I suspected earlier to be the case.  The primary purpose of the car would be street driving.  Do you have any more info on the twin GT35 setup?  Was it hard to setup and troubleshoot?  To achieve 700hp (is that at the wheels?); did that involve some large porting only the setup I saw (see above post) only achieved <500rwhp?

Thanks

Chris.

[AVENGE]

To run 500rwhp in street trim wont be easy, the fuel used will be the biggest problem. The TT  ehgine is bridgeported and runs on Methanol, it has made 920hp at the flywheel on the engine dyno. If someone wants to host the pics of the engine i can email them over.

We had no real prblems setting them up, only minor problem was one turbo would want to stall when you jumped off the throttle, this was easily fixed by changing to a bigger blow off valve fitted in a different location. Its an amazing set up, even with the big exhaust housings it comes on boost easily and the top end is totally out of control! Once when the gearbox didnt shift it reved to over 15,000rpm and went on to run 169mp/h over the quarter.
With smaller exhaust housings to tone it down, it would be awesome on the street.

Marty

[chrisBoid]

Hi Marty,

just PM\'d you about arrangements for hosting the images and getting them the right size etc, or you can follow the instructions on this thread (http://www.mazdarotaryclub.com/forums/showthread.php?s=&threadid=10026) for posting them yourself.

Eager to see those pics

Chris.

[chrisBoid]

Images of the >900 fwhp twin turbo setup courtesy of Marty.

I can\'t even imagine the cost of this setup?
Is a bridgeported engine streetable?
Running methonal is a bit extreme for the street too, what could we expect from pump fuel?

[chrisBoid]

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[chrisBoid]

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[chrisBoid]

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[rx7veilside]

nice but unless u are donald trump or the like u will never afford to build and run this kind of set up and it would be i think totally unusable for street..i am by no means an expert but anyone who tunes whether for cost or power goes single.my gt35/40 spools from about 300rpm and certainly doesnt run out of puff at the top end.another thing with twins is the heat issue all crammed into what is a small bay anyway...if u want power and good spool then consider the gt35. chris i dont think the small increase and it is only small increase in lag will be noticable

[20B_boy]

If I was minted then hell yeah, but realistically their isnt any one in the UK with the pockets for a twin (35R?) 13B like that - I hate (love?!) to think of the spec on the motor...plain evil

The manifold and plenum is interesting. The TB on the opposite angle to the plenum - for a reason I\'m sure. I imagine my plenum to be very similar - but with my TB aligned more toward the passenger front light.

Its a beautiful looking thing, been one of my fave 13B pics for a long time

[AVENGE]

Running methonal is a bit extreme for the street too, what could we expect from pump fuel? [/B]

Carnage...and lots of it!

Cost for the engine is apx aus$30k outright. That includes engine block, fuel pump, intake and exhaust manifolds, roller bearing 2 piece crank, turbo,s and wastegate.

Over here the fuel is rubbish. Anything above 400rwhp is going to end in tears sooner than later.  

Ive ran this engine with the single turbo in the FC photos, and the current TT set up. Personally i prefer the twins, however the brains behind it all. Phil Laird wants to go back to a single set up.

I guess after we run it next i will know for sure. But as for driving around the pits, give me the twins any day!.

[teamafx]

my setup is coming along, almost complete

[mattmaclennan]

Very nice! Keep us updated!

[John Yorke]

Originally posted by 20B_boy


Its a beautiful looking thing, been one of my fave 13B pics for a long time

Yeah you and me both:cool  does it come with boxes of tissues:rolleyes:

Gary has a similar set up [turbo wise] would be interesting to see what power that makes.

Chris [sense tuning] has built a tt that made good numbers [400+atw], but like you guys for the street a single is the way to go.