OMG I finally started getting turbo stuff - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 10-02-2008, 10:37 PM   #1
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default OMG I finally started getting turbo stuff

Its been a while since I had my last turbo at my house, and that didn't end too well (sent back to FM to pay for another car after totaling my first miata).

But I have finally started by build/getting parts together process. I guess this will be my build thread, but it will take quite a while with work and school.

So far I picked up some great deals on the major parts, pictures for your viewing pleasure:
The car the stuff is going on,
Name:  P9281047-1.jpg
Views: 6
Size:  59.2 KB

3" cat back and 2" to 2.5" downpipe
Name:  PA021050.jpg
Views: 6
Size:  59.4 KB

Strange DP that is worryingly small at the top.
Name:  PA021052.jpg
Views: 6
Size:  58.2 KB

Dent in exhaust, I think I can just bang that out.
Name:  PA021054.jpg
Views: 6
Size:  40.9 KB

Turbo Fun, oil lines, tubular manifold, elbows, gasket, srcrew/bolts
Name:  PA021055.jpg
Views: 6
Size:  55.6 KB

A turbo... can anyone give me some more info from this picture?
Name:  PA021056.jpg
Views: 13
Size:  47.4 KB

It needs a new compressor turbine, the previous owner used this one to grind up old cell phones.
Name:  PA021061.jpg
Views: 56
Size:  62.1 KB


I also have a MSPNP on the way to take care of engine management, but a shortlist of the parts I am still in the process of getting:

E-bay over the rad intercooler+ piping
BOV (again e-bay)
Turbo rebuild Kit and new compressor turbine
AEM wideband
Boost gauge
ACT Heavy Duty Clutch
460cc RX7 injectors
New oil fitting on turbo (broken off)

Looks like a complete list?

I'm still a ways off, but this is a start, and I can't wait to get the MS to lvl my tuning abilities.
speedf50 is offline   Reply With Quote
Old 10-02-2008, 10:45 PM   #2
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,578
Total Cats: 40
Default

Sounds good so far, I cringed at the compressor wheel pic.
kotomile is offline   Reply With Quote
Old 10-02-2008, 10:54 PM   #3
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Lexington, SC
Posts: 2,084
Total Cats: 0
Default

kind of odd seeing gran tourismo cover shot laying next to a 360

nice parts, and it does seem that the downpipe diameter gets smaller near the flange
mazda/nissan is offline   Reply With Quote
Old 10-02-2008, 10:55 PM   #4
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Lexington, SC
Posts: 2,084
Total Cats: 0
Default

Quote:
Originally Posted by kotomile View Post
Sounds good so far, I cringed at the compressor wheel pic.
oh yeah +1,000,000
mazda/nissan is offline   Reply With Quote
Old 10-02-2008, 11:02 PM   #5
Junior Member
iTrader: (3)
 
Join Date: May 2008
Location: palm beach florida
Posts: 134
Total Cats: 0
Default

nice looks good
Brian-bbc is offline   Reply With Quote
Old 10-02-2008, 11:19 PM   #6
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Compressor looks shot, and its a small turbo to boot.
Saml01 is offline   Reply With Quote
Old 10-02-2008, 11:52 PM   #7
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default

That is a worry of mine, does it really look that small? I'm still playing with the idea of dropping this turbo and picking up a larger T25, but getting another t25 would be hard to do, knowing that I eventually want to go BB 2560 or 2860 (because I use goats **** for gas in CA).

The downpipe perplexes me, I just can't see why they used 2" piping to start, then quickly step up to 2.5" and eventually 3" This wouldn't be too hard to change, although I think that the 2" section is so short that it shouldn't hurt flow too much, plus all of the transitions in diameter are to larger sizes.

Haha, I didn't think anyone would notice the 360 with the GT4 book. GT4, still the best racing sim bar none!


ca18det: Go the the intro section and introduce yourself before it gets ugly.
speedf50 is offline   Reply With Quote
Old 10-03-2008, 12:12 AM   #8
Senior Member
iTrader: (13)
 
Join Date: Jul 2008
Location: Macon, Ga
Posts: 826
Total Cats: 0
Default

Forza FTW
Sam Amporful is offline   Reply With Quote
Old 10-04-2008, 02:41 AM   #9
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default

Quote:
Originally Posted by Saml01 View Post
Compressor looks shot, and its a small turbo to boot.
Can you or anyone else give me some more info on this turbo? I was looking into it, and from what I see it isn't really that small, but I don't have much reference. I believe/hope it's an s14 turbo, but I can only find out so much info from the stamps on the compressor housing (a/r60, m24 1-1).

Should I look for another turbo? I wanted to go with a slightly large turbo to cope with the cali pee pee I run, so if this is super tiny, please let me know.
speedf50 is offline   Reply With Quote
Old 10-04-2008, 03:28 AM   #10
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

I'm no expert at ID'ing Garrett turbos by sight, but you're going to be dismantling the unit to replace the wheel anyway, right? Go ahead and pull that thing apart, get out the calipers and start making measurements. Here's a quick idiot's guide to how the Garrett numbering system works: http://www.turbobygarrett.com/turbob...gt_basics.html

With that info, you should be able to narrow it down considerably by comparing to the various specs available through this page: http://www.turbobygarrett.com/turbob...ochargers.html
(clicking on any givem model number gets you most of the key dimensions for that turbo)
Joe Perez is offline   Reply With Quote
Old 10-04-2008, 04:47 AM   #11
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default

Thanks for those pages, I guess I'll just bite the bullet and start pulling the turbo apart measuring as I go along, and order a rebuild kit in the near future.

The MS is still on its way, and I think I have enough saved up for an AEM wideband now.

So any thoughts on the 2" to 2.5" to 3" DP and exhaust? Does anyone think that 2" section could be a problem?
speedf50 is offline   Reply With Quote
Old 10-04-2008, 06:32 AM   #12
Elite Member
iTrader: (24)
 
Join Date: Jun 2007
Location: Sherman Oaks, CA
Posts: 4,482
Total Cats: 3
Default

ive got a ziplock full of weed today. i win!
UrbanSoot is offline   Reply With Quote
Old 10-04-2008, 06:54 AM   #13
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,058
Total Cats: 11
Default

BEGi (3") downpipes also start small and get larger down stream. The bullet is to increase radius gradually (as per Maximum Boost by Mr. Bell). If the turbine outlet is only 2"-ish, then a starting ID of 2" for the down pipe seems right.
Laur3ns is offline   Reply With Quote
Old 10-04-2008, 12:48 PM   #14
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,900
Total Cats: 1,793
Default

Looks like the turbo from a SR20. You talk with gpopshop.com for further info and replacement parts, I'd be afraid the turbine shaft is bent as well.
Braineack is offline   Reply With Quote
Old 10-04-2008, 03:14 PM   #15
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default

And I assume that if the shaft was bent it would be pretty obvious? The turbo spins fine as it is, and doesn't actually hit the housing. There seems to be no side to side shaft play, and just a little bit of front to back. I'll call gpopshop next week and see what they think, thanks for the link.

With that in mind... It would almost make more sense to try to sell this turbo for close to nothing, and pick up another sr20 turbo for cheap. Between the rebuild kit, shipping, and the compressor turbine, the price may work out to be the same as a cheap used turbo, although if I rebuilt this one I'd have a nice rebuilt turbo instead of a used beat up one.

And Slava... we need to do some work on your car before all of that is gone.
speedf50 is offline   Reply With Quote
Old 10-04-2008, 05:15 PM   #16
Junior Member
iTrader: (7)
 
Join Date: Mar 2008
Location: SoCal
Posts: 117
Total Cats: 0
Default

whats up kost....might i suggest www.adpturbochargers.com they have a facility in el monte....side note, your way ahead of me now...i still have only the snail lol but congrats, you're gonna have to give me a ride once its done
superman with heat is offline   Reply With Quote
Old 10-04-2008, 05:16 PM   #17
Junior Member
iTrader: (7)
 
Join Date: Mar 2008
Location: SoCal
Posts: 117
Total Cats: 0
Default

oh yeah...if you decide to get rid of that snail..ill purchase the complete wastegate of you..keep that in mind
superman with heat is offline   Reply With Quote
Old 10-09-2008, 10:53 PM   #18
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default

Well, update, I pulled the compressor housing and measured the diameter of the compressor wheel. It appears to be ~60mm, designating the turbo as either gt2560 or gt2860, both of which would be good sizes for my application. I attempted to pull the exhaust housing too, but I encountered one bolt that would NOT come off, so I gave up after a while.

With this in mind, I think I'll try picking up another comp. wheel and throwing it on. If the seals are all totally shot, I'll have only spent about $60 anyways, and if they are ok, then I'll have spent $60 to make the turbo work.

I also noticed that there are four holes in the center of the turbo, designated for what I would believe to be water and oil cooling. Is this normal for journal bearing turbos?
speedf50 is offline   Reply With Quote
Old 10-10-2008, 12:08 AM   #19
I EAT CUM
iTrader: (6)
 
Join Date: Sep 2008
Location: Redneck, Texas
Posts: 1,218
Total Cats: -1
Default

What manifold is that?
Turbo_4 is offline   Reply With Quote
Old 10-13-2008, 06:00 AM   #20
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: May 2007
Location: Malibu, CA
Posts: 749
Total Cats: 0
Default

The manifold was built by a place called South Florida Performance, who I know next to nothing about, but it looks very nice. I'll find out soon enough if its crap or not.

And after doing some research it appears as if the turbo that I have is a T28 off of an S14 SR20. The only thing that is throwing me is that in some pictures of S14 turbos the 1-1 mark on the compressor housing is the same, and on others the mark reads 1-2 instead. The rest of the compressor and exhaust housing pictures I have seen look identical with all of the same marks and sizes, along with having the same sized compressor turbine(60mm), and what I think is the same sized exhaust turbine (like i said, the damn housing would NOT come off).

So if this is the case, then I should actually have a ball bearing turbo on my hands. Like I said the shaft play seems non-existent, but I did notice some oil in the compressor turbine when I took it off. Does this mean that the seals are shot inside of the turbo? Or could the oil have gotten there from other means (shipping, being left sitting for a long period of time, coming from a car that was flipped)?

If I can I'll use this turbo, as it is exactly the size that I want, and if the seals are ok, then all I'll need is a new compressor and to send it to be balanced. What do you guys think about the condition of this turbo? Does oil in the compressor mean dead for sure? Is it worth trying to save?
speedf50 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Toxikk Girz0r Gaming 23 01-18-2017 01:02 PM
VE values too low? compuw22c MEGAsquirt 4 09-12-2015 08:42 PM
New here, saying hi, here's what I'm workin with. SuperSneakySecretSquirrel Meet and Greet 5 09-06-2015 09:30 PM
ME221 Now has Autotune and Long Term Fuel Trim Tables Motorsport-Electronics ECUs and Tuning 0 09-05-2015 09:02 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:16 AM.