Best Aftermarket Turbo Kit?

[TheRocket300zxtt]

I am looking to upgrade my turbo's in the near future and I was wondering what everyone thought the best kit was for street/racing use?

-Please include the price and where to find it.

Thanks,

Chris

[Florida240sx]

What do you got now?We need to know what we have to work with.What are your goals.What is your budget.Increasing turbo probably goign to need bigger injectors.Maybe EBC to increase boost.What about timing?Might need ecu reprogrammed. Yur question is too broad help us narrow it down.

[TheRocket300zxtt]

Currently, I have stock turbos and internals. I have a reprogrammed ECU currently but still have stock injectors. Also, do you recommend upgrading the turbos on a car with 140,000 miles on it? My goals are around 500-550 whp and my budget is 3-4 grand.

Thanks,

Chris

[Joe]

Mileage isnt a good gauge on engine condition. i think the best thing for you to do would be to have a leakdown test done at a shop (or if you know how). that will give you a very accurate idea on any weakspots in the engine.

[themadscientist]

The cheap upgrade around here is two S14 or S15 turbos.

[Nismo_Freak]

Currently, I have stock turbos and internals. I have a reprogrammed ECU currently but still have stock injectors. Also, do you recommend upgrading the turbos on a car with 140,000 miles on it? My goals are around 500-550 whp and my budget is 3-4 grand.

Thanks,

Chris

3-4k won't buy you what you need.

At that power you should be looking to go to a twin MAF conversion, ECU re-tune, turbos, and 740cc injectors. On top of that you need upgraded intercoolers and a full exhaust, more than likely with Dupree 5-bolt downpipes.

[WDRacing]

If you can do any custom work, then you'll save a ton of money. The stock piping on the 300ZX is extremely restrictive. So redoing all of that will be a bonus, I don't think you'll need a dual MAF, not sure here but the 300ZX MAF will go past 500whp when used on a 240.

If your upgrading things as a whole package, new mani's and turbo's is the place to start. I'd use a set of 2530's. They are a very common swap for the RB26. Quick spool without sacrificing flow.

But like the other guys said, you'll need lots of fuel and the turbo's and mani's are very expensive. You could use the stock mani I suppose, but even the turbo's are expensive.

What are you using the car for, real fun daily driver? Track? Drag? How much lag is to much?

Here's what I dug up with Google.http://www.mvpmotorsports.com/...hYN=NIt show's the two versions of Greddy's kit. You'd want the TDO5 version since you want bigger numbers and the upgrade to GT turbo's alone. The stock intercoolers suck, so you can fab your own fmic piping and buy a IC cheap on ebay. Or use a water sprayer on your stockers which help quite a bit.

Don't forget alcohol Injection, go this route and you can keep the stock IC's.http://www.alkycontrol.com/http://www.s ... lcohol.htm

Hope this helpsWD

[Nismo_Freak]

If you can do any custom work, then you'll save a ton of money. The stock piping on the 300ZX is extremely restrictive. So redoing all of that will be a bonus, I don't think you'll need a dual MAF, not sure here but the 300ZX MAF will go past 500whp when used on a 240.

The problem is the engine runs a risk by asking the MAF to max out.

Plus you will double your effective intake volume capacity by simply going to a dual MAF setup.

If your upgrading things as a whole package, new mani's and turbo's is the place to start. I'd use a set of 2530's. They are a very common swap for the RB26. Quick spool without sacrificing flow.

At 3-4k anything that is GT and involves new manifolds on the Z32 are out of the question.

I know for a fact two S15 turbos can be had for cheap in new condition if ball bearing is a must.

But like the other guys said, you'll need lots of fuel and the turbo's and mani's are very expensive. You could use the stock mani I suppose, but even the turbo's are expensive.

Fuel injectors are extremely expensive and top feed rails won't exactly make it any cheaper either.

Stock mani's can be ported to some benefit.

The stock intercoolers suck, so you can fab your own fmic piping and buy a IC cheap on ebay. Or use a water sprayer on your stockers which help quite a bit.

You won't find a correctly tanked core on Ebay, the Z32 needs two inlets, and two outlets. Then the piping is an absolute nightmare to make. People also make more power on the sidemounts for the level you are seeking.

Increase airflow to your stockers and rig water injection like Brian said. Good luck finding room for all this crap though.

Don't forget alcohol Injection, go this route and you can keep the stock IC's.http://www.alkycontrol.com/http://www.s ... lcohol.htm

There is very little room the Z32's engine bay for accessory pumps and resevoirs. Plus you have a problem with the intercoolers supporting the FLOW moreso on Z32's than the heat.

[TheRocket300zxtt]

Thanks for all the great feedback guys! I forgot to mention that I currently have a full exhaust system including downpipes, a single pop charger, pulleys, BOV's, and a FMIC. I know that I will have to upgrade the fuel injectors and purchase a boost controller to make the power level that I would like to achieve. How much more power will S15 turbos produce over the stock ones?

Thanks,

Chris

[WDRacing]

I get pretty creative with piping Alan, so my idea and someone else's of custom may be two different things.

He said turbo upgrade for 3-4k, I gave him just a turbo upgrade...lol. The supporting work will have to come later.

On the alky subject, there are 2.7 million places to hide a resovoir in a 300ZX. I've done it myself. You can use the windshield resovoir if all else fails. I prefer a tank and pump where the spare goes. Then just run a line up front. Nice clean and easy.