jdm-v35

iTrader: (7)

edit: now that my plans have taken an unforseen turn,

anyone have pictures of the actual JWT 700bb turbos that are used for the 350z kit?

also anyone know the specs on it and what is the exact garrett of the shelf alternative?

I need to buy one new turbo but it costs 500 more if buying through JWT so I want to buy the normal garrett unit.

Cass007

iTrader: (34)

http://www.turbobygarrett.com/turbob...ochargers.html

Disco potato:
http://www.turbobygarrett.com/turbob...S_739548_1.htm

Comparison... from the google
http://www.ztechz.net/id1.html

Read threads from members with builds and do some research. Send Rich (str8dum1) a PM and he can overlay two dynos for comparison if he deems you to be worthy

Aloha

str8dum1

iTrader: (11)

best bet would be call JWT. They are very helpful. prolly same wheels but smaller/different housing.

Chris, i dont track builds with turbos that small

jdm-v35

iTrader: (7)

cool thanks for the help guys. I just wanted to confirm that the flange diameters and housing sizes are pretty similar in size.

seems the gt28rs is the same as the jwt 700bb turbo.

str8dum1

iTrader: (11)

the flanges are not standard garret. so you cannot just swap out off the shelf turbos if that is what you are asking. you can only use the JWT ones.

jdm-v35

iTrader: (7)

the manifold and 5 bolt flanges are the same though right? I know the jwt has a 3 bolt flange for the intercooler piping which would need to be modified.

TwoFiveBar

The turbine flanges are standard T25 footprint for both 530 & 700.

530BB is a GT2554. Also available, but hard to find in stock, is the 2854R with different material on the turbine side as well as a little larger turbine wheel. A better choice all around over the 2554. Will make approx 500+ whp with enough boost.

For 700BB (GT2860RS), in order to retain the true 2860RS cover, JWT cuts the compressor outlet and welds on a, I cant remember, 2 or 3 bolt flange. Same for the compressor cover, the 3" inlet is cut-off and a 2 Bolt flange is bolted in its place. Will make 600whp on 93 with 20+psi and enough supporting modifications (cams, headwork)

If you want to run an off the shelf GT2860RS with the jwt manifold, you'll have to do some fab work. You'll need to cut the compressor inlet off of the the standard GT2860RS Cover (3" inlet) and bolt on a flange or a smaller diameter inlet so that it clears the engine mount. You may also have to grind down the actual mount a bit if necessary. And you'll have to re-work both the charge piping and intake piping.

JWT uses the .82 A/R for the 700BB for a reason - help eliminate boost creep. If you run a .64 for faster spool, you will need to port the w/g flapper transition or you'll increase boost without control to redline.

jdm-v35

iTrader: (7)

ahh cool thanks for the info. I am in the process of buying a jwt kit but it seems one of the turbos is missing so the seller was going to replace it with a gt28. I figured it wouldnt work to well but wanted to confirm. I guess I can always sell the gt28 and buy a 530bb from jwt to replace it without issue.

djamps

iTrader: (1)

If your goal is <500whp, the 530bb's are where it's at. Near instant spool + factory-like tq curve from 2krpm and up. My custom kit has turbos similar to the 530bb's.

thom000001

I don't think the JWT700 setup will get you to 600rwhp without some modifications to the setup.

Local guy here maxed the wastegate pressure at like 18psi (and it wouldn't hold that anyway) and it didn't get to 600rwhp. So you will probably at least need different springs in the actuators on the WG..And if you are going much over 18-20psi, I wouldn't expect those wg to hold the pressure through any higher rpms.

Don't get me wrong the JWT setups are great, if you keep them in the range that JWT specs them for...once you try going beyond that you need to do a lot of work.

Tom

jdm-v35

iTrader: (7)

my goal was never said to be 600. my goal is 350 max 400

jdm-v35

iTrader: (7)

btw twofivebar, I did a little searching and it doesnt seem like the 530bb turbos are in any way modified by jwt? the standard garrett gt2554 turbos already come with the 3 bolt flange and seem to have the same wastegate setup.

TwoFiveBar

Correct. I read my post, I dont think I implied that - at least I didnt mean to.

Just the 2860RS needs modified. The JWT manifold pulls the turbocharger close to the block so the comp cover needs modified - i.e, you cannot run the standard 3" 2860RS comp inlet as it will hit the engine mount.

There is an alternate to the 2554 - the 2854. Although for a long time it was really never stocked in the Us. Dimensionally the same and shares the same compressor as the 2554. But with a little more flow potential due to the slight increase in turbine wheel size and higher heat resistance do due the inconel turbine wheel as well as the turbine housing material.

There was a motorcycle shop, IIRC, Limit Engineering was stocking them if you wanted to switch it up a bit without having to modify too much. Limit used them for motorcycle turbo kits.

jdm-v35

iTrader: (7)

I just want a replacement 2554 since there is one brand new one with this kit. If it indeed is totally identical to the jwt530bb then ill get it straight from garrett or a garret vendor since jwt wants 500 more for the turbo thru them.

I just wanted to donfirm that it is the same turbo but renamed as the 530bb thru jwt.

jdm-v35

iTrader: (7)

ok ive confirmed with jwt that the 530bb is in fact an off the shelf gt2554 turbo clocked differently and one of the wastegate actuators is mounted a little differently.

jdm-v35

iTrader: (7)

bump first post edited due to unforseen changes