rs250nut

Hello all Im trying to decide on which of the above three turbos to use on my b16, if my calculations are correct it should end up close to 1700cc and the motor will rev cleanly up to 11,000rpm. Im not to worried about lag but I would like to see full boost by 6500rpm spec so far is as follows:

83mm sleeved block
C.P pistons
Pauter rods
Ballanced crank
Type r oil pump
Full race pro street ex mani
Edelbrock victor x mani

Any ideas or people with experiance with a similar set up?

TheShodan

iTrader: (14)

what is the purpose of the car? These are some serious $1800 plus turbochargers from Forced Performance, Garrett and other companies.

YARO.

If you still don't have any of those turbos I'd go with a Presicion sc6262sp, sc6265sp over gt35r. Newer technology, better turbo and cheaper.

rs250nut

The car will be road legal but I doubt it will see the road only on the rare occasion, pretty much an out and out drag car. I want to make as much power as I can with the set-up I have, obviously not silly there must be some sort of driveability as its not a dyno queen. I would have gone twin scroll but there is simply not enough room in the engine bay for manifold, rad, intercooler etc.

TheShodan

iTrader: (14)

Well, if that is the case, unless you already have a ball-bearing GT-R series turbocharger on the car, it would be a bit easier on the wallet and rebuildability if you got the journal bearing version of the GT35R , i.e. the GT3540S, or as stated the Precision 6262, the Garrett Billet 62mm Reaper, the Borg-Warner S362, or even the classic T3/T67, (which i suggest other than the GT3540S, or even the billet series). Considering you're in England, if you go with the billet series, and something goes wrong, repairability and availability of parts will be more difficult than if you were in the states. There are a lot of authorized garrett dealers that would be able to help you with replacement parts if needed as opposed to shipping the entire item across the pond. with the GT-R series that you're looking at, if something goes wrong with the turbocharger, you've just created a paper weight for the fireplace in your flat.

Long story short; considering your location for longevity and repairability for the use of the car, I'd look into the T3/T67 and GT3540S before looking into these much more expensive units. PM me with questions if any.

danp1uk

i am a little confused, i was under the influence that there is only one GT35R? are there variations? how will i tell which 35r is mine?

TheShodan

iTrader: (14)

The way to tell is the size/design of the turbine wheel, and if they are using 14mm x 1.25 water ports. The original GT35R also has a restricted feed line opening to use a .035" restrictor. If you've purchased a GT3582R (or GT35R), you'll know. take a pic and show us..

danp1uk

will these pics do? what did u mean by the restrictor? mine looks like it has a built in one?

30psi_gst

Cant tell by those pictures if it has a restrictor or not. The restrictor will be in the oil feed, where it goes into the turbo. Either in the turbo itself or your flange should be the restrictor. Ive used nitrous jets before, they work fine.

To answer your OP question, my votes for the 3586r.

danp1uk

it does have an oil restrictor built into the oil feed on the turbo? any help as the camera is playing up?

rs250nut

Im now looking at the precision range of turbos as suggested above, 6262 sounds like a good turbo but I am thinking about the 6765 ball bearing with a .63 hot side, is this turbo going to be to much for my little b16, where could I expect boost from?

SergEK

And there it is

PT67 .63 hot side should be fine for a heavy breathing B16 that revs to 11K with supporting mods Hell people run PT67s on stock GSRs and make 4XXwhp on like 10-12psi lol

TheShodan

iTrader: (14)

The turbo at that size even with the change in aerodynamics won't make full pressure by about 5500-6000rpms. You really have to look at what you're trying to use the car for. The power will be there for 400whp with a TON of applications, but the WAY that the power comes in is very different. You have to decide if you WANT the "lightswitch" uncontrollable power that comes in after 5000rpms, but can be used for drag racing,or do you want a better powerband that can make the better use of your small displacement. If power is more your concern, you may have to deal with the disadvantage of "lightswitch" power. Otherwise you may not have to, but may take a little more pressure to get the same power.

NOTHING is TOO MUCH if your little B16 is built. But the rest is up to you.

rs250nut

Right sorry to drag this thread back up but I have now decided on a turbo the precision 6765. The only thing I am unsure of is which compressor cover to use, I have a full-race ramhorn, will the h cover fit? Or will I have to go with the sp cover?

TheShodan

iTrader: (14)

You need an S (or SP, whatever they call it) cover. An H will be a pain

rs250nut

The reason I wanted to go with the H cover is because I intend to use an intercooler with 3 inch in and out to mate up with my 3 inch throttle. Would it be physically too big?

TheShodan

iTrader: (14)

There's no need to go 3" intercooler piping unless you're going MUCH more the limits of a 6262. You will also lag significantly more. 2.5" IC piping is fine. Stop planning like you're a skyline. You have a FWD car with a very little weight. use that as an advantage more than whose turbo dick is the biggest. You'll enjoy the car more.

rs250nut

I'm not one for playing up to the crowds, function over form and all that. I don't like spending money for it to be a waste, I'm going to build this only once and want to get it right. Peoples opinions seem to differ some what.

CDecker0218

What this guy said.