turbo upgrade off ebay

[Guest]

I have entertained the idea of a supercharger?
I dont think the 2.5 would hav a lot of torque if it wasn't for the two tiny turbos coming on so early, think it would be like 5000 before ya spooled a big single and it would have a massive lag issue IMHO

Its always going to be a matter of application though, and not many people have gone for a huge single yet that i know of. I will be very interested to see how my relatively small one turns out. But bear in mind there are some advantages over a single(not that i am biased). In terms of air flow, the simple piping, in-out-Throttle body set up is a LOT shorter than the stock mess of piping, and has a heap less bends. I went with 2.5" piping to help keep the volume of the piping down for this very reason.

And as for the exhaust side, by having a 3" straight from the turbo (flange is still 2.5" though..), it should be able to flow more freely than the stock downpipe arrangement ever could.

The unknown quantity for me, is the huge and long exhaust manifold to the turbo.. This may cause some lag, along with the big intercooler. But it has been pointed out to me that when a lot of the subaru guys convert to singles on the EJ20's they end up with a much longer system, and on a 2.0l engine..

Hopefully i wont end up with an on/off type car, and i am fairly sure it will be close to the stock spool up, but hopefully in another month i can say for sure

If it is crap, then the least i can do is stick a monster on there, and see what it can do before it dies..

Also, looking from the mitsi Td05 10T 16g compressor map, the single 16g at peak should only flow close to 10-15% more than the pair of td03s, but for a longer period of the rev range, and sustain it to the redline, but at the price of some lag.

 

[Madhav]

Dave from RPW (the dude that put a twin turbo setup in his magna) said to me on his last email that he might be interested in putting a couple of Garrett gt25s in there.

From the research I did they're supposed to spool up real quick and are good for more HP than the standard turbos. A lot easier to source than the BMW turbos, can pick up a pair on ebay, however all the custom work to get them in (assuming they'd fit at all) to modify all the various pipes, not to mention the tuning and the potential destruction of the transmission and diff makes you wonder if it's all worth it......I am still interested though, someones gotto try it!

I still reckon someone needs to take their car down to a turbo specialist and see if they can manufacture a bolt-on job. I know everyone took the piss last time I said this, but why not? Have a look at the skylines or the silvias, they've made bolt-ons for them so why not ours?

 

[Hipsi]

My mate could produce a bolt on kit, but I doubt my wife would let him have the car

 

[Madhav]

I'd give them my car except I'm in WA.

 

[bradc]

Mike, your intake might be good, but the more important exhaust is very long from the manifolds to the exhaust and back down to the rear end of the car are very long.

I still beleive that 2 turbos are the best option, they can be mounted so much closer to the manifolds and have a much shorter pipe length

 

[Guest]

yeah i have looked at mikes car... hopefully he will confirm/deny a few idea's i had once his is up and running.

even the factory EJ20/25T manifold is quite large, and they dont run a "small" single turbo off a 2.0/2.5L.

when i said big single, i dont mean GT51R, T04Z, etc... perhaps something like a GT30/GT35R. if an RB25 can spool them up by 4k, then a 6A13TT should be able to spool it up quicker, being a V engine, and also having a longer stroke (~81mm vs. 76mm).

it's a common setup for the GTO's aswell, running extention pipes off the stock manifolds, and putting a single turbo over the gearbox, and alot of them run 10/11 sec passes without a problem.

 

[bradc]

yeah the factory subaru manifolds are just as long as his one. I'm still concerned about spool, and I maintain the best way to keep it low is to run two small ball bearing turbos on the engine.

 

[Madhav]

I actually managed to source a couple of turbo cartridges from the BMW 335i's. Amazing what the net can do.....

Anyway what this means is I will have the opportunity to put valmes's theory to the test.

I've been doing a little research on the subject, it seems people have 2 opinions about it, some believe it can and should be done, espcially with the BMW turbos, others from what I hear have observed that the shafts are the weak point which shear at higher boost.

 

[Madhav]

Oops, spoke too soon, just got quoted $1200 per turbo from a junkyard in the states. Ouch... too much outlay for a potential failure.

Some other dude is offered me just the cartridges alone, I said, "Cool, whats your price?" No reply as yet.

 

[Guest]

Someone has gotto manufacture a simple bolt-on turbo upgrade for these cars.

there is a direct bolt on kit, probably more than one in japan. i'll have a link soon

 

[Madhav]

there is a direct bolt on kit, probably more than one in japan. i'll have a link soon

Cool mate, bring it on, I've looked but couldn't find anything.

 

[bradc]

Vandal is talking about the Pros turbos, they aren't made any more.