Thought you may be interested in seeing a recent twin turbo conversion by www.nizpro.com.au from the land downunder on an F355. The engine is internally stock and at a very early stage of development (just completed - running out of injector - 7psi boost max) it's making a genuine 450 rear wheel horsepower. I've attached a couple images for a look see.
Want some intercoolers - here they are - noting that the images are from the construction stages and in turn the product isn't painted and so forth.
Oh my. These guys look like they have really done their homework. Interesting place for the intercoolers. I wonder how effective they will be in that location? You will have all the heat from the exhaust and the turbo's right next to it. None the less, very impressive work.
Novel approach...will work a treat in the rain, but will be hard to keep stones away surely.... So what engine management changes have been made...is it on MoTeC or similar now?
Very cool, very cool... Ferrari internals are generally pretty strong, right? I'm guessing the engine can take that low boost with ease without any upgrades to the internals, is that correct? Already quite a jump in power, are they going to try for even more power in the future?
I'm actually surprised they're running that much boost on such a high-compression engine (what is it stock, 11.0:1?). Seems to me you'd have to pull so much timing to prevent knock, you'd be hurting potential power output in the long run.
I think its going to be a good conversion, i would be the first to sign up if a twin turbo conversion was available in the uk. I am a big fan of twin turbo set ups.You will always get smart arses with smart arse comments who dont have the balls for doing it themselfs. As i always say "this is show me country". Nice convrsion guys,i will love to hear more about it and the results of testing.
Looks very good so far. Is this a one of a kind treatment or are you guys planning on marketing a kit? I just got back from trying to smog a late model german car I am selling with a euro sc'er kit and it does not have the right carb board certifiation so although it passes fine srom an emissions standpoint, visually it does not. So if the kit idea is upon you lads, better make sure it is legal in calif. If you do that, I want one. John
So what is the logic behind the CA laws on that one? Even though the car is emissions legal, it doesn't "look" it, so it is illegal. What a sucky law.
Fair question Ernie. Have a close look at the 'unfinished' images and you will notice that the intercoolers are in fact right away from the heat shielded exhaust system. They are in fact under the guards with some protection from the factory inner guards (noting that they are effectively mounted in a similar style to the factory radiators and we all know that some stones will hit the radiators). They receive absolutely no radiated exhaust heat! The intercoolers are equipped with their own fans, controlled by the MoTeC M800 ECU and are set to come on at 30 degrees Celsius and go off again at 25. But get this, on the dyno during 15-17 second runs, intake temps rose to absolutely no more than 36 degrees Celsius! On the road and the temperature is no more than around 10 degrees above ambient.
I can only make the assumption that you own a McLaren (good luck to you if you do!). Thing is, wouldn't it be an absolute prick if a little old F355 came blasting past you when you were at full noise. I say this because we have only just started with this combination. The engines are - as we all know - very strong internally and here in Oz in the likes of our Nations Cup racing, they are being run at 11,000rpm. So we are quite confident with regards to internal integrity. We aren't interested in touching the internals at this point, rather the next step will be new injectors, more boost and tuning, and we believe a conservative result will be 540 rear wheel hp. As it stands, it's doing the 450 on its ear.
Fair comment there bripab007, however it really comes down to tuning ability and efficiency. Seriously, we've turbocharged high compression engines before including, for example, the 11.7:1 Integra Spec R and run over 12 psi boost through it without any internal changes. You would in fact be quite surprised at just how much ignition we run which is still in the vicinity of 30 degrees. The intercoolers are incredibly efficient.
Depends very much on the response we get as to whether we offer a kit. So keep it up guys, tell us what you want and we will see if we can offer a kit. As to Californian law, I know it's a bit of a bummer over the there, but hey, anything is possible!
Shame about California........NOT! Never mind flog it in europe, i would buy a bolt on conversion, thing are easyer in the uk...for now.
Err no. There are no 11,000rpm Ferraris in nations cup, 100% sure on that one! (The Honda NSX when it has the JUDD V10 in it is rumoured to go close, but it blows up EVERY time!). The 360C run at 8500 with an 8250 shift light and the GT are up to 9000 with an 8700 shift light....and they blow rods and/or pistons quite readily if bounced on the limiter too much. I'd say 7lbs boost is ok on your 355, but don't push your luck if you want to go on and on for 1000's km......
See? As soon as someone makes such a ridiculous assertion, they just lose all credibility as far as I'm concerned.
