Nutcase although my self not convinced with single turbo if you believe in something go ahead and try it and don’t let others let you down . this is why other cars like GTRs reached 1000+ hp faster than 996TT and 997TT because most of us don’t take initiative and try different things and don’t push it to the limit and if somebody fails we stop at that point and most of us think this is the limit for a long time till somebody has courage comes and go beyond this limit and most of us copy and follow till next stop

 

So go with two 510HP turbos... solved.

 

1 turbo to push 1000 hp. gt42 or bigger. that about 8-9inchs around. Hell I wanted to do it but the twins made better sense to me. Also dont forget that the intercoolers split the duty of of cooling the air but then the bigger turbo will heat the air less. you got me thinking again.

 

UAE996TT: Thanks for the kind words, but closed minded opinions dont scare me hehe. Ive always tried to push limits with cars where i can, and somtimes just build things that havent been done. The Porsche is new to me, but its still just an engine with wheels like every other car ive worked on.

Tim941NYC: gt42 was exactly what i was thinking of.. to begin with anyway
As for intercoolers - instead of air to air look at water to air. Ive used it on many other builds. If its setup correctly on the porsche it leaves you with loads more room to play with, shorter intake path, etc.

I think im going to start doing some measuring this weekend and im very seriously considering going ahead with the single conversion. Tim, Ive seen your thread and the pictures of your build and I love your work. I'd really appreciate any ideas or input you may have.

Cheers.

 

Nutcase keep us posted .. good luck

 

Will do mate, but this may take some time - im busy as hell.

On a positive side, I just organised a gt42/45r from my mate. I bought it for him ages ago, it was for his v8 soarer that i was building but the project got put on hold and its been sitting there for years now.

And so it begins..

 

Let us know how it goes. I know the Supra guys are fans of the single over dual setup.

 

a lot of that has to do with space and plumbing room. problem with big turbos is just that - they are big and need space, bigger downpipes, bigger intake plumbing, bigger outlet plumbing. tough to make it work on a supra with two big boys.

 

I think going to a single would be a downgrade. I know guys with big v8s that want to go to twins for the quicker spool time. My buddys rb26 with a 67mm has retarded lag. Stick with twins

 

All real world tests I have seen there are very little difference between the 2 setups. A single is slightly better than twins though. Spool is slightly better on a single IF plumbing can be kept to a minimum (LS series is where I have seen most of the comparisons). That is the problem I see with the 996 is trying to get it to fit.

I also have been seriously looking at air to water IC's. It should work great in the 996tt! Keep us posted on any mockups or anything, I was to see what you come up with.

 

water to air adds a lot of weight plus it gets hot and never cools back down in the streets. How much Ice can you carry for how long??

 

Best wishes to you NutCase...innovation is always a good thing for the community. Best wishes to you for this ambitious project.