Looking to have the engine rebuilt during the next month, while the car is away having the bodywork done. I have been speaking to Traders and 300zx members for advice, thanks everyone. The following Turbo's have all been recommended, any more views? pro's or con's on these?

 

HKS2530

GT675RS

JWT 700

JWT530

PE1420

GT28R

 

To go with which ever Turbo I choose, Im planning on

 

555 Injectors

Koyo Rad

SMIC

Wiseco Forged Pistons

 

and possibly

 

New Rods (poss Eagle)although stock should be strong enough

New Cams (my car was Auto, now Manual)

Manifolds

 

Thanks again for everyone Ive spoken to over the past week or so.

 

 

Barry

 

New Exhaus

Whats your power/lag/performance aims ? This will affect which Turbo's suit your needs/wants.

Like he said above all depends what you want from the car Bazz.

Whats your power/lag/performance aims ? This will affect which Turbo's suit your needs/wants.

 

Im after reliability (dont laugh) hence the upgrades internally. I want a nice driveable car, without too much lag, but hoping the mods I plan will help with that from the bigger turbo's.

 

 

Barry

hks 2530's without a doubt, proven, reliable, produce decent power with not too much lag and will work with the other mods your looking at. also you will need some sort of ECU

 

Mike

hks 2530's without a doubt, proven, reliable, produce decent power with not too much lag and will work with the other mods your looking at. also you will need some sort of ECU

 

Mike

 

agree with mike 2530s all the way

If i remember rightly Steve E binned his HKS ones in favour of the turbodynamics BB t28's as the latter was far less laggy than the 2530's, though not as much puff at the end, however that didn't matter as his end goal was not much higher than a good 450

FYI the GT675RS uses the same BB cartridge, compressor and turbine housing and is far less laggier than the HKS model.

 

You'll get lots of different opinions on the subject of Turbo's Bazza :)

cheers

smithy

If i remember rightly Steve E binned his HKS ones in favour of the turbodynamics BB t28's as the latter was far less laggy than the 2530's, though not as much puff at the end, however that didn't matter as his end goal was not much higher than a good 450

FYI the GT675RS uses the same BB cartridge, compressor and turbine housing and is far less laggier than the HKS model.

 

You'll get lots of different opinions on the subject of Turbo's Bazza :)

cheers

smithy

 

I can't see why anyone would want to bin a set of HKS 2530's especially for a turbodynamics effort , having recently removed a set of there T28's which have covered less than 5k they were nothing more than fit for the bin, design wise was some of the worst I have seen all IMHO of course

I can't see why anyone would want to bin a set of HKS 2530's especially for a turbodynamics effort , having recently removed a set of there T28's which have covered less than 5k they were nothing more than fit for the bin, design wise was some of the worst I have seen all IMHO of course

 

funny i was going to say everyone i have spoken to that have T28's have all said there dissapointed with the huge lag and power, 2530's do have some lag but i was getting 1 bar of boost by 3000 revs on my skyline so i would guess a 300zx could get 1.2 ish bar by 3000 revs which makes then very good indeed and good for 550-600rwhp!! and as i said the main word in turbos is "proven" how many T28's are out there and what power have they produced?????????? only set i can think of is chrisc's and his turbos have just been rebuilt after not very long

 

All IMHO

 

Mike

PE1420 or 1820's produce massive hp and are rock solid, another choice as well as the 2530's IMO

 

GReddy have priced themselves out of the market by their $2k price increase so your left with

 

2530

1420

1820

JWT 530/600

 

That's about it.

give me a couple of months and I will tell you what the HKS are like on pentroof's :dance:

give me a couple of months and I will tell you what the HKS are like on pentroof's :dance:

 

hopefully I will be able to tell you sooner :smash: ;) :D

I my self will be going for jwt 700 bb as am doing the build around them :cool:

I can't see why anyone would want to bin a set of HKS 2530's especially for a turbodynamics effort , having recently removed a set of there T28's which have covered less than 5k they were nothing more than fit for the bin, design wise was some of the worst I have seen all IMHO of course

well i hate to be the bearer of that news, but it is infact true and the TD t28's boosted well before the HKS ones did and funny enough mine are kicking out 475lb of torque and all for a grand less than HKS, Oh and to quote your own words after driving my car, "this has gotta be one of the fastest cars i've had in and man so torquey" and i never knew you were qualified to open up a set of Tubs and know what parts were in it to know the design was crap, interested to know how ? just so no one else makes that mistake of course :rolleyes:

Kirbz, these were not the same t28's as are commonly known, their design is a TD one and designed for the Zed in particular :)

cheers

smithy

well lets just see how the 2530s vs t28s fair on the road,rather than stats :cool: wont be long :dance:

f2530's do have some lag but i was getting 1 bar of boost by 3000 revs on my skyline so i would guess a 300zx could get 1.2 ish bar by 3000 revs which makes then very good indeed and good for 550-600rwhp!!

Im only get about 0.6bar by 3k revs(full boost by 3200) on stock tubs ! ...these bigger tubs can produce more boost at a lower rpm than stocks ? :eek:

 

Yet, according to this....Stock should be making more power than the 2530's all the way up to about 4200rpm

 

...or is it down to Divorced Wastegates (which are supposed to lower spoolup by 500rpm) ?

if you look at all the figures they all have similar curves anyhow,its what power they make at midrange

 

looking at the 2530s once they come in,they leave the t28 and sport 500s anyway

 

the 18gs just climb and climb all the way :wack:

stock on the graph is stage 5 so intake, exhaust, 1 bar boost, downpipes etc

 

also, don't forget that the 16G's and 18G's have the greddy manifolds, rest are on stock manifolds. Now imagine how the 2530 line will look with decent manifolds in the package - shift the curve left a few 100 rpms and add 30-50bhp on top :D

This is the best turbo kit for your car Bazza:

 

http://www.300zx.co.uk/forums/showthread.php?t=52566

This is the best turbo kit for your car Bazza:

 

http://www.300zx.co.uk/forums/showthread.php?t=52566

 

 

Sounds a bit expensive that Graham!

 

 

Barry

well by that graph, the jwt's look more like what im after - cheers legrath!

trust me guys even on a cast manifold on my R32 the 2530's come in hard and i had 1 bar of boost at 3000 revs and they keep pulling like a train to redline!!

 

i think the graph is a little misleading as well, so if the graph is to be believed if you set a stock car at a 4600 rev limit and macs car at a 4600 rev limit the stock car should be quicker????

well by that graph, the jwt's look more like what im after - cheers legrath!

 

just be careful about them bud, if again the graph is to be believed they completly run out of puff at 5000 rpm which is the main power band of a zed so yes there very good and stock like spool up but very flat in the mid and high range, thats why i said the 2530's as there a good alrounder??

the density of the air is also very misleading and important factor that is often overlooked:

more dense air = more power.

The air produced by stockers at 1 bar is hotter (and has less density) then the airtemp at 1 bar of bigger turbos.

Another big factor in how well a certain turbo performs is the VE and compression ratio of the engine.

 

So, saying my turbo has this much boost at this rpm doens't mean much, unless you're comparing the exact same turbos on the same car/engine

 

-Eric

So whilst saving up and looking at every tubs link i can find of late,and looking at that graph ,bearing in mind it looks like loads of Zeds are getting there tubs done for one reason or other just how much are these fitted inc labour from bottom up please? or

a.sinclair123@ntlworld.com