Sweet info bro! It sounds just about what I was thinking these cars would be o.k at.

290rwhp @ 6psi just goes to show what these motors are capable of. I was expecting to see 6psi yielding similar numbers to the superchargers, apparently this doesn't seem to be the case as your numbers are much higher. The efficiency of the turbo plus using an intercooler in this case ramped up the numbers compared to others.

I'll be running around with 20% of my fuel trim utilizing methanol, but will be using 100 octane when I first get her going. Do you remember what A/F ratio's the shop was trying to achieve? The Buick methanol injection crowd told me to shoot for a low 10ish:1 and start from there.

I wasn't expecting power to be near that region on an intercooled setup. If it's actually starting to lean out according to the wideband, I'll start with either the bosch motorsports adjustable FPR or buy a GT2 pump. That pump alone would make a significant change in fuel volume.

These ebay turbos are so cheap I'm actually expecting it to go as a matter of time and not as an if. When I first purchased it I checked for play and she's good. When I get my self contained oiling system going, I'll check it again. What I'm banking on to make it at least have some what of a higher life cycle is that since my system is a low pressure system that it should be fine for awhile. While it could be completely hit or miss, turbos all around don't need the oil pressures the motor sends them. When a good deal pops up on a 50trim or 60trim Garrett, I'll be jumping right on it


Cheers!
Joe

 

Problem with those Chinese turbo's on ebay is the shaft play is fine when you first get them. But under load with heat is a total different story. The turbos are not balanced on a VSR when they are built. (http://www.turboneticsinc.com/techno...php?section=13) They eventually vibrate into a untimely death.

Not balancing a turbo and saying it has no shaft play and should be fine is like not balancing a wheel on a car then saying it's round so it should be fine. Ever driven a car with a wheel out of balance? Remember what happens to your steering wheel? Yeah, exactly.

So basically when that turbo explodes from the fins touching the housing and those metal pieces end up inside your motor, its a great time for a 3.2L upgrade. Then you can come to the internet and talk about how turbo's are crap and they blew up your car. I have seen this exact scenario play out enough times before.

Just incase you were not already convinced: http://www.bblgroup.us/ssautochrome.htm

Guess who brings in all the cheap Chinese turbos to ebay that suck? Yep you guess it. I shouldn't be so hard on them really, I have seen them last a week before on one of my customers cars. Not bad.

And just for the record in case you think I don't know what I'm talking about: I built the motor myself, Magnus did the trans, turbo setup was pretty serious. Made 424whp.

 

Oh yes I'm fully aware of what the background these things have made for themselves in the past. I've also recognize your DSM years ago when I first started modifying my own 2g gsx. BTW, did you ever get the S-AFC or GReddy Emanage to work on your boxster?

With these things it's always a matter of when and not a matter of if thats for sure. I recognize this. However I believe it's gotten to the point now where enough of them are passing somewhat better quality standards. If every one of these things decided to blow themselves up within days or weeks, places like www.clubNA-T.com would be put out of existence due to just the sheer volume of people who have purchased the Chinese non turbo to turbo kit for their 2jz and 1jz powered cars.

Besides, I'm already supposedly testing my luck on a turbo car that I can't tune ignition or fuel, I might as well throw in another variant in there that supposed to die on me in a week if not instantaneously.

 

Funny you state that...I am currently building up my Lexus Sc300 with a full custom turbo kit. I will be getting a new headgasket and arp headstuds...good for roughly 10lbs of boost...yielding around 350hp. Im not sure what turbo I am going to run yet...but most likely a Garret Disco Potatoe. Hahaha

 

hey man, nice project/idea! i think you're attacking everything ALMOST perfectly, except for one thing. everyone has good enough reason to be worried about those cheap turbos, but i personally think, and KNOW from experience that the one point you should be concerned about is a cheap wastegate and BOV (wastegate more than anything). i actually did a custom kit on my 240sx, and i attempted a budget build which actually came out pretty good...but everything failed when my wastegate stuck and i boost spiked to 15-18psi (mind you, i was only setup to run 8psi). true, cheap turbos WILL fail, and probably cause you more headache than anything, but it's best not to be cheap on any management type items (i.e. BOV, wastegate, fuel management, etc.). well...that's my 2 cents. i'd love to see the intercooler pics once you get done...that setup sounds kinda badass! GOODLUCK!

stephen

 

Dont know if you are interested but I do have an extra turbo motor for sale.
Robert

 

Hmmm...
Do i smell a new project....A real TT engine in my Boxster.....

I may have to pass but its a good thought for a minute.

 

Good grief if only I had the money

Gary: Didn't you mention a long time ago that if you could you would do a 3.6 swap. How about a 3.6 TT. That swap would rock. 415hp, GT1 based motor, dry sump, simple tune with upped boost and free-er flowing intake and exhaust. Come on

Stephan: Thank you for the heads up. Initially I'm going to test the wastegate with a vacuum pump. I've heard of the cheapy wastegates failing but not too often. Regardless though I'm going to swap it with tiAL internals in the very near future.

 

Just checking up on the project, sounds like its coming along well, Should keep Gary in contacts in case the shrapnel does happen but an engine swap would be pretty slick, but it won't go in as quick as Forza 2 makes it out to be....

 

Turbo motor will not fit unless alot of modifications were to be done...ie. cut the rear firewall...ALOT!

 

hey man, i know you said you were going to test the wastegate with a vaccum pump, but i'm not sure if that will help you. wastegates operate off of boost pressure, so hooking up a vaccum pump won't be beneficial. you also aren't putting it through the conditions it would be in on the car...i.e. heat cycles. i believe the heat cycles are what caused my cheap wastegate to fail. the wastegate spring probably got EXTREMELY hard, and caused it to stick. another issue i'd be concerned about with it is the design quality of the casing. i'd still suggest just spending the money to get a "name brand" or decent quality wastegate. it's an invaluable investment. boost spikes caused me to blow rings and ring lands in my 240 motor (all of the pistons fell apart in my hand after i pulled them out). there's a company that some of the 240 uses for custom manifolds and wastegates called "JGS tool" or "JGS tubo." i'd just hate to see you in the situation that i was in, especially after all of the hardwork and effort. my wastegate didn't fail until maybe 1k miles after the install. just some food for though man! anyhow, good luck, and keep us posted!

 

^^^ yeah yeah no vacuum lol i just got an email alert about that... Compressor.. if you have a vacuum im sure you have a compressor. Even though youre system holds vacuum doesnt mean it uses it like that.

 

Lol dude you gotta give more credit then that. I should have made it more clear, it's a vacuum pump but you can reverse it so instead of sucking air out, it'll blow air in.

I'm the really **** type, when it comes to looking at my boost gauge and wideband. Both will have an LED warning me if it goes past a certain amount and the wideband will be hooked up to an audible alarm if the AFR at WOT goes past a specified point.

Thanks though for the heads up on the wastegate. From my research so far the wastegates themselves tend to fail less then the turbos do, but that doesn't mean I cant put an oem tiAL diaphragm and spring ASAP

 

Looks like a cool project man, goodluck, and just be careful. What may seem like a budjet now, turns into maxed out credit cards later. I would prepare for the worst, JUST incase something happens, I would save up some insurance dough just in case.

 

Im doing a 3.6 swap myself right now... but the 3.6 M96 is a totally different block than the 3.6 TT engine (based off the 993)... not to mention trying to find room for the dry slump and intercoolers... I think someone has done it in Europe, but Im sure it would be a big undertaking...