I was looking at the JWT 500 Sport turbos. As far as I know they are the stock ones which have had the internals improved. Am I right?

 

Anyway these where going to cost me over a grand for the turbos, which is acceptable but not exactly cheap.

 

However!

 

I have been given a phone number of some one in the UK who rebuilds turbos. I phoned him and he knows what he is talking about. He knew what turbos where on a 300ZX anyway and said that I would need new oil feeder lines.

 

Anyway, to rebuild my turbos with 360 Degree BB, Air Cooled and Step Gaps (Or could be Stop Gaps) works out to be £400 cheaper than the JWT and that is before I add any tax and shipping of my turbos back and new turbos here onto the price too.

Plus JWT 500 are not BB are they?

 

This guy seemed to know his stuff and didnt sound like he was trying to con me. He basically explained that there is little he can do to the turbos just make them really strong with the strongest parts he can get.

 

I have seen some sites say they ground out the housing to make it take a larger wheel. I dont like the sound of that.

 

What do you guys thing? By the sounds of it this guy does the same thing that JWT does to the 500Sport. Just makes them very strong, and for that much cheaper should I give him a try?

 

He has come very very highly recommended by people who race cars so I believe he is capable.

 

What are your thoughs on this? Would you go with him?

 

Stuart

Sorry just shows I don't know my terminology. I thought RWHP was at the wheels :o

 

Sorry mate you are right, trying to read through my post, but an excessive amount of caffeine today could mean an error is a high probability LOL!

TD05-16Gs are brilliant little turbos, though you may find them (comparitively) laggy on the Zed. You'd get better spool charectaristics from TD04s, although you'd be getting close to their upper performance limit at 600rwhp.

 

ECU wise, purely in terms of features, I'd be tempted to chuck the existing stuff in the bin and go for an Autronics, Link or Motec system with boost control, active knock correction and a few other toys thrown in.

 

In my opinion the TD04's are a none starter, little BHP for the money and you might as well get the 530's or 1420's!

 

Can you give us some more info on the management systems as I would be interested to know why you prefer them?

Why should he go for engine management and not a chip, sure you have the flexibility. The only engine management system I would go for is Ash's Zemulator, but that is still too developemental at this point in time!

 

You are talking about extude honing the plenum, very costly, and I think I might have heard there is not that much bhp to be gained from it.

 

You get posistive boost from tdo5-16g at 2900rpm, where as the pe1420's you get it 2600 rpm!

 

Here is some useful turbo information.

 

http://www.twinturbo.net/net/viewms...l&msg_id=839668

 

Yes engine management would be the best because even if u do minor modifications on the z the power output change.For ex. changing an intercooler to a different 1 then u have to retune your car.Now it's not only flexibility but better fine tunning,with fconv pro u can not tune the management by yourself because only 3 companies have the software and 1 of them is Jun but if Jun tune your car they can bring u the max.Personally i would go for Motec, fconv pro(which uses the same chip with the motec) or Aem. Extrude honing is expensive and it wont give u much hp but u will gain response and better flow so better spool up.

 

If u want more power then u'ii have more lag, but if u put td-0516g and do your work on the manifolds and on the plenums both upper and lower then u would go for the greeddy rather than the PE.

milk floats are probably quicker around a track!

 

LOL, careful going there mate as that is what the Soup forum branded our cars at Trax a couple of years back causing muchos upsetius on here!

If u want more power then u'ii have more lag, but if u put td-0516g and do your work on the manifolds and on the plenums both upper and lower then u would go for the greeddy rather than the PE.

 

 

TD05-16G already come with manifolds as part of the kit!

 

But for me they are twice the price of the Pe1420's, are less responsive, have noisy external wastegates and offer the power in the top end of the graph. Again it all boils down to personal preferences, I like driveability, but if you are just after BHP then the Greddy kits are the way to go!

I like driveability, but if you are just after BHP then the Greddy kits are the way to go!

 

You hit it on the head. I want Driver-bility

My 10p's worth, if you wanna get big mother turbos then commit yerself to doing the rest that comes with it...e.g. engine work, rebuild, bigger injectors etc. Otherwise try to stay half captain sensible as replacing the blowers is enough of a job in itself whether or not you do it yerself or get some other monkey to do it! IMHO

My 10p's worth, if you wanna get big mother turbos then commit yerself to doing the rest that comes with it...e.g. engine work, rebuild, bigger injectors etc. Otherwise try to stay half captain sensible as replacing the blowers is enough of a job in itself whether or not you do it yerself or get some other monkey to do it! IMHO

 

I want more power (don't we always) but I want Drivability and to improve reliability. I want a smooth progressive power curve not 2 grand power band thats the only place where anything happens.

 

I will find 3-5 grand if I need to to get what I want done engine wise, but I want to really be sure where I'm going with the thing before I start. Too many people just say stick this on that makes it faster.Then wapp that on and end up going backwards to go forwards.