Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   Trade your GT2860 or 71 for my 76? (https://www.miataturbo.net/diy-turbo-discussion-14/trade-your-gt2860-71-my-76-a-51433/)

y8s 09-08-2010 03:41 PM

Trade your GT2860 or 71 for my 76?
 
I only need the compressor housing and CHRA. I'll be keeping my .64 A/R turbine housing with the welded-shut wastegate flapper.

the short version:
Since I sold off all my built motor goodies and want the car to be more of a streeter/daily car, I dont need headroom for 350 rwhp. Or even 300.

I want to see how the 2860 and 2871 perform with the .64 turbine housing on a stock 01 with the VVT working.

Who's up for a trade or a "let me try it out" then trade?

Cmon, I know there are those of you out there who wish they got something bigger.

here's how the 2876 spools in my car with cam retarded 3 degrees:

http://y8spec.com/dyno/2876boost_w-vvt-4thgear.png


here is VVT at full 12 degrees retard (worst case scenario):

http://y8spec.com/dyno/turbospool.gif

Stock intake cam advance, say on a 99-00 car, would probably put you fairly close to the first graph--or an adjustable cam gear on the intake would get you exactly there.

takers?

hustler 09-08-2010 03:44 PM

If you ever decide you want the bigger turbine housing I'll trade you your little .64 to hold my pens at work, rather than my current .86.

y8s 09-08-2010 05:09 PM

If you want a random turbine housing to hold pens at work, I have a CT-26 hotside from my old celica alltrac.

Aricjm15 09-08-2010 06:53 PM

how many miles on said turbo?

y8s 09-08-2010 07:36 PM

Lots.

but pretty light boost. not above about 10 psi and not for a lot of time. the turbo's only been to one track day and an autocross or two. i can check shaft play. it still takes a long time to stop spinning after shutting the car down from idle.

pschmidt 09-08-2010 07:39 PM

I'm going to have a 2860 for sale here in a few weeks if you want to buy one straight out.

y8s 09-08-2010 08:15 PM


Originally Posted by pschmidt (Post 627264)
I'm going to have a 2860 for sale here in a few weeks if you want to buy one straight out.

Sounds good. My budget is zero.

Aricjm15 09-08-2010 08:53 PM


Originally Posted by y8s (Post 627263)
Lots.

but pretty light boost. not above about 10 psi and not for a lot of time. the turbo's only been to one track day and an autocross or two. i can check shaft play. it still takes a long time to stop spinning after shutting the car down from idle.

Ditto, mine has about 30k miles on it. Its a little dirty, but nothing some carb clean couldn't take care of. Do you have the compact compressor housing on yours or the full size? The full size will make the "turbo not hit block!" hit the block.

y8s 09-08-2010 09:38 PM

the turbo itself:
http://gallery.y8s.com/miata/turbo/gt25/

installed:
http://gallery.y8s.com/miata/turbo

I'm guessing that's the full size? Turbo not hit nothing on my car. Except that tingly spot in my loins?

rider384 09-08-2010 09:59 PM


Originally Posted by y8s (Post 627292)
I'm guessing that's the full size? Turbo not hit nothing on my car. Except that tingly spot in my loins?

Turbo not hit block?

Aricjm15 09-08-2010 10:18 PM

I'm using a s4 style manifold. :cry: Pretty sure this will not fit in my car.

TurboTim 09-09-2010 08:15 AM

ahh damn I'd like to have that turbo, but the 2860rs I have is brandy new, I can't trade straight up :(

y8s 09-09-2010 10:59 AM


Originally Posted by TurboTim (Post 627405)
ahh damn I'd like to have that turbo, but the 2860rs I have is brandy new, I can't trade straight up :(

make me a reasonable offer. at some point early october I can start doing more digging into the condition of mine.

JasonC SBB 09-10-2010 01:14 AM


Originally Posted by pschmidt (Post 627264)
I'm going to have a 2860 for sale here in a few weeks if you want to buy one straight out.

What a/r?
Standard miata-world hot and coldside inlets and outlets?

pschmidt 09-10-2010 12:08 PM


Originally Posted by JasonC SBB (Post 627780)
What a/r?
Standard miata-world hot and coldside inlets and outlets?

.86 AR 3" in and 2 out, I believe.


http://patrickschmidt.baked.net/albu...Miata3_036.jpg

http://patrickschmidt.baked.net/albu...Miata3_037.jpg


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