Please need advice for a turbo for 500+whp . Please need also the specs for the turbo recomended.

Thanks!!

 

If you are looking for 500+whp then I would suggest the GT35R. With the right combo on manifold/turbo you will make 500whp pretty easily and it will still be a great street car.

 

If you don't mind the lag until 5k rpm..

 

Actually it's not really that bad. The more testing we have been doing with manifolds, turbos and tuning it starts to hit boost below 4,000rpm and get full boost around 4500rpm.

 

ok lag until 4.5k or 5k. that's still a big difference from stock.. In the rain without beating on it that sudden spike translates into, wait, wait, wait, rip, spin, shift, rip, spin, shift, rip spin, shift, rip well over 100mph in under 9 seconds, let off. in about the time it takes to read that.. BUt on the road course coming out of each corner unless you get used to riding the throttle to keep up boost, its a lot of the wait, wait, wait, but down the straights theres a lot of quick shifting..

 

I really wish you take a ride in one of the cars we have built. It really isn't like that at all. I don't road race, but on the street it actually responds well. There is always going to be lag, but nothing crazy at all.

 

I guess it's a matter of perspective what lag is. If you just keep it above 6K RPMS for a straight line for 12 or so seconds, it's ok. but stick it in fourth at 3k rpms and hammer it.... and wait.. and wait... and wait some more...

Next time, I'm out in San Diego I'll gladly take one of your cars for a spin to compare the tune and delivery to the others.. I've yet to drive a turbo car making over 500whp that has any resemblence of driveability to a stock car. Over the last 2 or 3 years, the civility levels have improved, but they really fall flat down low in a way that around town it's not very pleasant unless you don't mind attracting the attention of every on the block your cruising at 5K + rpms all the time.

Can anyone keep 350 + ft/lbs of torque from 3k rpms to a 8k rpm redline?

 

Next time your down come take a ride in one of our cars.

 

Where at in San Diego are you located? My sister lives out there which means I have to swing out to that coast too often.. We're deciding which cruise to go on next and San Dieo may be one of our ports of call... 350 wft/lbs at 8k = 530whp so thats a healthy motor if anyone can generate a nice flat 350 ft lbs across the table..

 

Mate that’s easy. You want the HKS 3240 turbo. Good for 600BHP and with wicked spool up. A guy over here in the UK is running one on a 2.3 and for a base tune he saw 500bhp on pump fuel at around 1.5 bar, that’s with another 0.7 bar to go and with race gas he will be cooking. He had around 450lbft to so its not all top end. Anyway the turbo is very efficient with very quick spool up. Also it will support more BHP if you want. Simon Norris was running one (with mods to it I think) and he was getting 770BHP (at the crank). The turbo is around $3250 and the manifold kit is around $3100 (prices from Boost-Solutions web site).

 

Or you could go for the HKS 3037s turbo. At its limits at 500whp from what I hear but will be better in the midrange and as a daily drive (quicker spool up than the 3240). Will run 2.0bar all day long and is very efficient at lower levels to.

 

Why would anyone buy turbos from HKS? For half the price you can get basically the same thing from Garrett.

GT3037 = GT30R. Only difference is the turbine housing-- HKS has a smaller inlet flange than the true Garrett unit

GT3240 is very similar to a GT35R. Only difference is HKS uses a cut down version of the turbine wheel in the GT35R, and a smaller inlet flange than the true Garrett unit. Plus, with the real Garrett unit, you get a choice of a/r.

 

There is no reason to go with HKS turbos. You are just paying extra money for the name. Garrett turbos are just as good and make the power just as easily. Unless you just want to be able to tell everyone you have a HKS turbo.

 

Your complaining at RnR for an impossibility unfortuneatley. The smallet turbo that could in theory produce 500 whp would have to be a 50 trim TO4E, which is full boost around 3500-3700. No tuner on here, RnR, Buschur or Vishnu would every try to build one for you though. It's extrememly difficult, and while all 3 of them could do it, the car would require constant tuning and tinkering, and would be run on the edge of detonation.

The best example of this is Andres 99 GSX with a AGP 50 trim and tubular manifold. He made 503 whp, but it took him several hundreds of dyno hours spaced out over 3 years, and he didn't daily drive the car by any stretch.

So you have to go bigger. The next step up in reality is either

A. The 60-1 or 62-1 compressor's. These have been used for year's. They spool around 4400 RPM. The next step down is the 60 trim, which is a HAIR above the 50 trim and has never actually gone as fast(likely due to lack of use though, not capability. I like 60 trims for street/strip cars)

B. The 56 trim GT compressor used in the GT35R. This wheel is pretty bad ***. Slightly more powerful then the 60-1 and capable of spooling at the same RPM at the 60-1 BUT WITH A LARGER TURBINE SIDE. Thats important. The next step down is the 56 trim in the 30R and thats a 50 trim competitor, full boost in the mid-high 3's and 450 whp is pushing it.

So you see, there is simply a large jump in spool and power potential between the 50/30R and the 60-1/35R.

 

wait until works turbo kit is out and ask them. it should be out some time this month. they are boosting 20 psi and they get 360 whp every day driving on stock car. their turbo can run 30 psi easy and with tune up from them you can reach 500 whp easy for driving evryday.