i notice theres a fair few people in the uk with aftermarket tubs on their z's. i'm looking at hks 2530's or the greddy td05 20g (i think) i want decent bhp at least 500+ - but i'm worried about spool up time on the greddy turbo - how long does it take? or at what revs does it kick in off the line. i'm more into track than drag thats why i'm considering the hks as its got a really good spool up time according to reviews. as anyone got any info as some of you have these tubs already? how do they compare with response on stock tubs?

 

cheers

Depends how far you're wanting to go with things.

Those turbo's will go well beyond 500bhp and you could get something smaller and much cheaper for that kind of power.

The Greddy's (not sure about the HKS) need a lot of other modifications to fit they don't just bolt on easy.

As far as I know the spool up isn't that different they're much better turbo's all round.

I have turbo dynamics stage 2 hybrids which are rated for 500bhp, they spool up very quick and i can guarantee they are cheaper than hks..

I have turbo dynamics stage 2 hybrids which are rated for 500bhp, they spool up very quick and i can guarantee they are cheaper than hks..

 

 

How much are you looking at? i can remember, last month magnum was selling his hks 2530's for 1600 - so there are some bargains around.

about the same but as hybrids they do spool up a little faster ;)

does this help ??

 

hmmm the T25-28's are one of the lowest spooling and dont make that much more power than oem turbos!! sports 530's look like a good buy for spool and power.

Though not supplied by me, I do beleive he's running the same t28 turbo's as mine

I don't know any 5 bolt turbos that will only flow a bit more than the stockies tbh bud.

As for Spool up times, well at just under 2K they kick in and all the way to 475lb of torque! few Zeds got that at the mo.

Fairladyz, if yer going for new tubs then as Kirbz suggested the JWT530 are a good turbo, or the even quicker spooling ones, the GT675RS are getting great reveiws in the US.

Turbo dynamics who done speedfreaks tubs for him do/design theirs based on the fact we're a V6 and not a straight, I:E 2 x1.5's bolted together.

smithy

just plotted the z1 GT675RS against mine and mine are still spooling slghtly earlier - they do like like a really nice turbo though

 

 

regards,

 

alex

i would love to know what manifolds the z1 dyno was using - no mention in their website - i cant beleive they were on stock ones

 

regards,

 

alex

oooo hello this her car

 

http://www.z1motorsports.com/imageGallery/view_photo.php?set_albumName=album156&id=Jess_Z_2

i want that ass i mean zed lol

 

have you seen the comments on the bottom he he

just plotted the z1 GT675RS against mine and mine are still spooling slghtly earlier - they do like like a really nice turbo though

 

 

regards,

 

alex

 

Pretty good comparison then mate, the 675RS are half the price of your TD-05's and if using some mike smith manifolds, would be even better still :p

cheers

smithy

wow the 675 rs are really cool, little over my price range but will have to save a little bit more as it looks like i'm gona have to get new downpipes and manifolds too. - i take it i'm on the right lines with getting 740cc injectors, 94 onwards fuel rail, zemulator, and doolz to go with? - (in the back of my head - all i can think is - this is gona kill me (my wallet that is) lol.

 

already got fmic intercooler - should be here tuesday - so that will give me somthing to do next week

wow the 675 rs are really cool, little over my price range but will have to save a little bit more as it looks like i'm gona have to get new downpipes and manifolds too. - i take it i'm on the right lines with getting 740cc injectors, 94 onwards fuel rail, zemulator, and doolz to go with? - (in the back of my head - all i can think is - this is gona kill me (my wallet that is) lol.

 

already got fmic intercooler - should be here tuesday - so that will give me somthing to do next week

 

You don't need new manifolds at all so that saves yer a few bob. personally i'd stick with a set of nismo's 555's which can be used in your existing fuel rails. A chip from John Dixon, a decent induction, yeah use the doolz if you like and finally some new 5 bolt downpipes for the tubs. She'll run real sweet and quick with that lot ;)

cheers

smithy

cheers for that fella, at what bhp would you max out a set of nismo 555's tho?

with standard fuel pressure my 555's maxed out at just under 500rwhp - with a fpr & increased fuel pressure they maxed out at 533 rwhp.

 

regards,

 

alex