Turbos on Ebay

[Anonymous]

http://cgi.ebay.com/ebaymotors/TURBO-KI ... dZViewItem

Looks good it is for a 3.2 L engine (my engine is a 3.3 L - 200 c.i. so it seems close). I don't know how to find an ebay map for a turbo like this.

http://cgi.ebay.com/ebaymotors/T3-T4-T0 ... dZViewItem


http://cgi.ebay.com/ebaymotors/T25-T28- ... dZViewItem

t25 was recommended to me .. and its pretty cheap.


If you don't see any here can you make some recommendations. I have done alot of the research and did all the math work, but I can't figure out how to find the compressor maps for the turbos i am looking at.

 

[hasa68mustang]

first off stay away from ebay turbos... you will most likely get what you pay for. Also what are your goals? did you want a nice daily driver, or did you want a drag setup? what kind of numbers were you looking for?

 

[Anonymous]

Well it is for a semi-daily driver. I have a van from work that they give me and all the gas repairs etc etc. But other than that it is my only vehicle. So it wont be getting a TON of miles, but will still be more or less a daily driver. I am looking to eat some imports from light to light. Occasionally it will go over to the drag strip though I want to do autocross more then 1/4 mile.

I am looking to get approximately 300 horses total when all is said and done. I will be putting a Aluminum Head on when they come out. It has a 350 cfm holley 2V on it which I plan on keeping.

Will have disc brakes, and a T5 (one from a 90's V8 that will be rebuilt) installed very soon.

Suspension kit will be added later on, i haven't quite decided which route im going as far as like a mustang 2 one or just an upgraded one.

Any questions/comments etc. feel free to ask.

 

[Anonymous]

I was looking at a Supra's set up (it is an I6 3.0 L) so i figure they are pretty similar, how hard would it be to do a set up like that?

The MKIV Supra's twin turbos operated in sequential mode instead of the more common parallel mode. The sequential setup featured a pair of small, equally sized turbos, with ceramic blades for the domestic Japanese market and steel blades for export (USA, Europe) markets. At first, all of the exhaust is routed to the first turbine for reduced lag. This resulted in boost and enhanced torque as early as 1800 rpm. Approaching 4000 rpm, the exhaust is routed to the second turbine for a "pre-boost" mode, although none of the compressor output is used by the engine at this point. Approaching 4500 rpm, the second turbo's output is used to augment the first turbo's output. This setup differs from other twin turbo designs which run both turbos in parallel. The sequential mode provides greater low RPM response and increased high RPM boost.

 

[HighVolkage]

a stock 2jz turbo setup will easily handle the power youre looking to make, plus a TT inline 6 mustang would be sweeeeet 8)

 

[StrangeRanger]

That's a lot of complexity for some pretty marginal gains.

Have you read Turbochargers by Hugh MacInnes and Maximum Boost by Corky Bell? Those two books are pretty much the jumping-off point for a turbo project.

If you're going to auto-x and play in traffic, torque is way more important than HP. Take a look at a turbo with an axially-divided turbine housing. feed the collector for 1-3 to one side of the housing and the collector for 4-6 to the other. Go with a small-trimmed unit that will spool up quickly and set your wastegate accordingly. You won't make the bragging numbers on a dyno nor will you be as quick in the 1/4 as you would be with a bigger unit but you'll be lethal stoplight to stoplight.

 

[Anonymous]

I am in the process of reading turbochargers by hugh mcinnes, i couldnt find maximum boost, i did read Street turbocharging by mark warner.

I agree torque is more what I am looking for but no one seems to ask that, or maybe I have always misinterpretted it.

Ya I would look for a divided turbine housing though I haven't seemed to find many. I have also read a ball bearing one is the way to go due to how much faster they spool.

As for the TT setup I thought it was really cool, especially since it would cover the low end boost and more high end power.

 

[StrangeRanger]

I agree torque is more what I am looking for but no one seems to ask that, or maybe I have always misinterpretted it.

Look for a turbo map that puts you on the efficiency "island" at whatever RPM you want to be getting major boost, I'm guessing somewhere around 3500 RPM. Make sure that you're still on or near the island at 5500 RPM and ignore everything above that because you're going to be dumping over the wastegate anyway. Check to make sure you don't cross the surge line when spooling up and you've spec'd the cold side of your turbo. The hot side (turbine) is still a black art.

 

[Anonymous]

Ok i will start doing the math for mainly at 3500. Thank you for the help =).

So in your opinion doing the twin turbo set up like a supra has would be a waste?

 

[StrangeRanger]

Not a waste but not a project for your first turbo either. Maybe your third or fourth.