2XS

I have a chance to pick one of these up new, and reasonably priced but am new to turbos, and this is all I can find on it and It is not listed on their website

part number 751470-5019

performance rating: 450 - 800 HP
recommended displacement: 2,0 - 6,0L

compressor: inlet 67,8mm / outlet 94,0mm / trim 52 / 0,72ar
turbine: diameter 77,0mm / trim 78 / 0,85ar / external wastegate

- dual ball bearing
- oil and water cooled bearing system
- High-Flow-compressor housing
- directly with GT4088R interchangable


is this going to be a decent street turbo on a k20 in a crx? or should I keep looking

yungmulacrx

What are your power goals?

k20z1ej1

sounds like a really big turbo. i would use a 40r if my goal was 650-850. for anything less i would choose a smaller turbo.

2XS

700whp for now then more next year

Chance EG

A GT40 frame turbo for a "street" CRX at 700+whp...

Jesus christ dude.

TheShodan

iTrader: (14)

When you mean "More" for next year. What do you mean? What you're referring to is the GT4094R, and is a great turbocharger for over 700whp with it's 77mm turbine profile. However, there are a lot of other alternatives that can easily make that power and more. Whether it be from Garrett, one of its derivatives, or Borg-Warner, you can't go wrong..

Check here in the FAQs on the more recent catalogs and sizes (highlighted in blue). Once you've narrowed a few down andgive us a bit more information about your setup and true goals, we can be of much more assistance.

https://honda-tech.com/forums/forced...2A%2A-1024174/

Jcp385

Damn, I see GT40 and was excited that someone here might like Ford GT40s as much as I do.

th3pwn3r

You might want to go smaller. Unless you don't care about the power coming in way later with a big turbo.

2XS

guess I left out some needed info.

The car was originally built to autox, and was a class leader. By street car, I really mean I like to drive it to local races, shows, events, but it is far from a daily driver. last year I clocked roughly 1k miles total. I take it to the drag strip occasionally, but I really want to get into roll racing this time. It is 1850 lbs before I started this swap,, and I'm in process of putting a k20 in it, That will be this years motor, non sleeved, with next years plan to either get it sleeved, or buy an erl sleeved k24, that my buddy who drags has as one of his spares. I also am going to do a 4 piston head, and depending on how busy work is, I would like to get a quaiffe sequential.

in saying I want 700 whp, I'm not expecting to do that on pump gas, I figure 4-450 on pump would be enough, to be fun on the street, but my goal is 700 on race gas for when I go racing, and then next years goal is 1k whp.

The reason I am asking about this particular turbo is the deal I can get on it, new. at 1g, Canadian, for a bb dual scroll, that seems to be pretty cheap for the potential with my limited understanding. This isn't a moneys no object project, but I own my house, own my toys, so aside from everyday living expenses it is just time it takes to raise the cash to buy parts

Chance EG

^Ah. I'd say go for it then, for drag racing or roll that should be great for 700+ wheel. $1K new is a good deal on it too.

TheShodan

iTrader: (14)

I still wouldn't do 400whp on pump gas with something as large as a GT4094R. That's just too large. K-series or not.

2XS

so what will get me to my goals? in a smaller turbo,

TheShodan

iTrader: (14)

GTX3576R, (Gen I or Gen II), GT3588R Interceptors, GTX3582R (Gen 1 or Gen 2), Turbonetic 62mm series, BW362, or BWEFR 6190, etc. Lots and lots of great options out there. start checking them out. There's no "one size fits all when it comes to turbo selection.Anything about 70lbs/min-80lbs/min will work.

Balor_Gr

So this is a three stage plan:
1) stock sleeves what ever power pump gas for now
2) sleeving the engine 700whp later
3) ***** deep 1k hp to the tyre.
~~~~~~~~~~~~~~~~~~~~~~~~~
Ill tell you what I would do.
About 1) :Get a K20A2 instead of forging a stock sleve K engine. It will do stock internals 450 to the tyre EASY.Get a good manifold that you will use again later(id use a divided t4 manifold since you might reuse this mani for the 2) and 3) build)
Get a cheap 450-500 hp 600-700-800$ turbo you will sell later.The oldest technology proper sized turbo will be better from a 700whp turbo that will be used for 400whp.
If i were in the states id use the silversurfer from TheShodan(awesome performance).Also roll racing requires small turbo because the turbo needs some time to build boost.And if you ever try to race someone on 2nd gear with a 700 whp turbo youll never hit boost.Small turbo high boost cars will destroy you.

About 2) 3): Since id assume you dont own a bank you can try to buy once here.What i mean:
Get the pistons c.r. and size you will use with the 1000hp engine, get the rods you plan on using for the big engine, and sleeve the engine for 1000+ hp once.
Id use a K24 block but you can make 1000hp with the 88mm 2.1L using the k20 block you allready have.
I think since you like 4pistons you can buy a 1000++hp ready shortblock for something like 4-5k $ from them.Slap the very good k20a2 head you allready have and
you are ready for 700-800 whp.Again intercooler size and piping get them for 1000hp at once.

Crx is a roll race KILLER with 5.85 CdA (one of the best on mass production cars EVER). If i would choose a car for roll race thats the chassis i would choose.
Also you will need a racelogic traction controll( gl finding one) or other way to controll power on the wheels and a way to build boost like rolling antilag.

¬¬¬¬¬¬Be prepared for what a 1000whp transmition costs are before you do anything.

2XS

Quote:

About 1) :Get a K20A2 instead of forging a stock sleve K engine. It will do stock internals 450 to the tyre EASY.

not understanding this comment. do you mean get a k20a2 instead of putting forged pistons in? if so is a k20 z3 equivalent to a k20a2 for strength of bottom end?

Quote:

If i were in the states id use the silversurfer from TheShodan(awesome performance).

can you pm me a link?

Quote:

Also you will need a racelogic traction controll( gl finding one) or other way to controll power on the wheels and a way to build boost like rolling antilag

have an infinity waiting to go in, which has both options

I know, 10-12g's

Balor_Gr

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Chance EG

A few beers into celebrating the 4th are we?

Shodan makes a great point about there being better turbo options, just depends on the price you want to pay for what's available.

Balor_Gr

Is it me or my reply got asdfed

wtf is this " </strong> "

EDIT: I had a copy in my browser.If i violated a forum rule tell me.For now ill paste my comment.