FC RX-7 turbo on a Miata? - 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 07-01-2007, 08:47 PM   #1
Newb
Thread Starter
 
Join Date: Jun 2007
Location: Orlando, FL
Posts: 12
Total Cats: -3
Default FC RX-7 turbo on a Miata?

How would a stock FC RX-7 turbo behave on a Miata? How would spool up time and power output be?

I'm asking because a friend of mine has an extra turbo sitting around he'd be willing to let go for ~$70.
Crimson is offline   Reply With Quote
Old 07-01-2007, 09:12 PM   #2
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

There are no manifolds that will mate that to your motor unless you have it custom built and isn't that a weird two stage to twin turbo setup too. Either way no one uses them because it's def not an ideal setup. Ever wonder guys with FCs go single turbo, there is a reason?!
If you want cheap then you would be better off going for a DSM turbo setup. They are widely available at low prices on ebay and forums in used form.
cjernigan is offline   Reply With Quote
Old 07-01-2007, 10:05 PM   #3
Elite Member
iTrader: (3)
 
Mach929's Avatar
 
Join Date: Oct 2004
Location: lansdale PA
Posts: 2,500
Total Cats: 0
Default

fc's are already single turbo, but i can't answer your question i don't even know what kind of turbo it is
Mach929 is offline   Reply With Quote
Old 07-01-2007, 10:49 PM   #4
Senior Member
 
Join Date: Dec 2004
Posts: 1,450
Total Cats: -1
Default

The compressor side of the turbo probably would flow about as much as a T25 (think 220rwhp, tops), but the turbine side is way to big for only 1600cc of exhaust gases; it was built for nearly double that.
bripab007 is offline   Reply With Quote
Old 07-01-2007, 11:38 PM   #5
Senior Member
iTrader: (4)
 
Join Date: Jul 2006
Location: Shelton, CT
Posts: 672
Total Cats: 2
Default

Quote:
Originally Posted by cjernigan View Post
There are no manifolds that will mate that to your motor unless you have it custom built and isn't that a weird two stage to twin turbo setup too. Either way no one uses them because it's def not an ideal setup. Ever wonder guys with FCs go single turbo, there is a reason?!
If you want cheap then you would be better off going for a DSM turbo setup. They are widely available at low prices on ebay and forums in used form.
The FD is the twin turbo RX-7, FC would be the Turbo II.

This one.

http://www.mazdarotary.net/images/Model_Pics/14_p2.jpg

One of my buddies had one of these.
Harv is offline   Reply With Quote
Old 07-01-2007, 11:39 PM   #6
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Sorry, my experience with rotaries is only with FDs i guess. Never been around single turbos FCs, just single turbo conversion FDs. Wonder what that turbo looks like.

Thanks for the info, i posted a little slower than you it appears. That turbo II is sick.
cjernigan is offline   Reply With Quote
Old 07-02-2007, 01:02 AM   #7
Newb
Thread Starter
 
Join Date: Jun 2007
Location: Orlando, FL
Posts: 12
Total Cats: -3
Default

Quote:
Originally Posted by Brian View Post
The compressor side of the turbo probably would flow about as much as a T25 (think 220rwhp, tops), but the turbine side is way to big for only 1600cc of exhaust gases; it was built for nearly double that.
That turbo is on a 1.3L engine, how is that too big? I've heard mention of the rotary effectively acting like a 2.6L, is that what you're referring to?
Crimson is offline   Reply With Quote
Old 07-02-2007, 04:23 AM   #8
Senior Member
 
Join Date: Mar 2007
Location: Denver, CO
Posts: 564
Total Cats: 0
Default

Quote:
Originally Posted by Crimson View Post
That turbo is on a 1.3L engine, how is that too big? I've heard mention of the rotary effectively acting like a 2.6L, is that what you're referring to?
Yes.
jwarriner is offline   Reply With Quote
Old 07-02-2007, 10:50 AM   #9
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

and when you consider fuel economy it acts like a 6.2L
Arkmage is offline   Reply With Quote
Old 07-02-2007, 10:54 AM   #10
Senior Member
 
Join Date: Dec 2004
Posts: 1,450
Total Cats: -1
Default

Quote:
Originally Posted by Crimson View Post
That turbo is on a 1.3L engine, how is that too big? I've heard mention of the rotary effectively acting like a 2.6L, is that what you're referring to?
Yes, that's exactly what I'm referring to. The rotary only displaces 1300cc, but it displaces that amount twice as quickly as our 1600cc boinger motors.
bripab007 is offline   Reply With Quote
Old 07-02-2007, 11:12 AM   #11
Elite Member
iTrader: (33)
 
RotorNutFD3S's Avatar
 
Join Date: Jan 2007
Location: Newnan, GA
Posts: 2,539
Total Cats: 29
Default

Quote:
Originally Posted by Arkmage View Post
and when you consider fuel economy it acts like a 6.2L
LMAO! So true!
RotorNutFD3S is offline   Reply With Quote
Old 07-02-2007, 02:05 PM   #12
Senior Member
iTrader: (10)
 
Join Date: Feb 2007
Location: South Eastern Wisconsin
Posts: 1,282
Total Cats: 0
Default

Quote:
Originally Posted by Arkmage View Post
and when you consider fuel economy it acts like a 6.2L
Hahaha you beat me to it.
ApexOnYou is offline   Reply With Quote
Old 07-02-2007, 07:46 PM   #13
Newb
Thread Starter
 
Join Date: Jun 2007
Location: Orlando, FL
Posts: 12
Total Cats: -3
Default

Fair enough, that idea is out. Now if only I could find a GT2560R for around $100 I'd be all set...
Crimson is offline   Reply With Quote
Old 07-02-2007, 08:52 PM   #14
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Good luck finding one for $100.
You could get a SR20 T25 for a little more than that in good condition though.
cjernigan is offline   Reply With Quote
Old 07-03-2007, 07:11 AM   #15
Junior Member
 
Join Date: Oct 2006
Posts: 312
Total Cats: 0
Default

Actually the v8s get better highway mileage due to gearing. I considered an rx8 at one point except for the little issue of it being as slow as a stock miata and the horrible gas mileage.
beerslurpy is offline   Reply With Quote
Old 07-06-2007, 12:38 AM   #16
Newb
Thread Starter
 
Join Date: Jun 2007
Location: Orlando, FL
Posts: 12
Total Cats: -3
Default

Quote:
Originally Posted by cjernigan View Post
Good luck finding one for $100.
You could get a SR20 T25 for a little more than that in good condition though.
Yeah, I know :( Realistically I'm looking at using a T-28 now. Relatively cheap and easy to find, and BEGi has a manifold for it for $400.
Crimson is offline   Reply With Quote
Old 07-06-2007, 12:35 PM   #17
I'm Miserable!
iTrader: (-1)
 
Join Date: May 2007
Location: West Sacramento Ca
Posts: 948
Total Cats: 0
Default

Quote:
Originally Posted by beerslurpy View Post
Actually the v8s get better highway mileage due to gearing. I considered an rx8 at one point except for the little issue of it being as slow as a stock miata and the horrible gas mileage.
Lmfao..... Rx8's Run like high 14's stock.....Stock miatas run like what, 17-18's? Your nuts...And one of my 5.0's got about 17 I think highway, built world class tranny with shortened gearing, and a 373 rear end. It sucked haha but got anything out of the whole..
Slidin'Miata916 is offline   Reply With Quote
Old 07-06-2007, 06:46 PM   #18
Senior Member
iTrader: (1)
 
Join Date: Aug 2006
Location: Illinois
Posts: 1,011
Total Cats: 7
Default

I used that little IHI turbo the ford probe uses. One of them was $75 and another was $100 at the junkyards and that came with all the lines including a bucket of hoses I grabbed off the probes IC setup. The IC itself was $20 more and I'm still running that IC but I've upgraded to a T3 now.

Like this.
http://cgi.ebay.com/ebaymotors/rhb5-...spagenameZWDVW

Or maybe this will cram into a Miata. =)
http://cgi.ebay.com/ebaymotors/88-89...spagenameZWDVW
lazzer408 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
Turbo 1995 Miata Low mileage Clean Tekel Cars for sale/trade 29 02-05-2016 05:16 PM
WTS: 460cc RX-7 Red Top Injectors albertogti117 Miata parts for sale/trade 6 10-08-2015 10:09 AM
New here, saying hi, here's what I'm workin with. SuperSneakySecretSquirrel Meet and Greet 5 09-06-2015 09:30 PM


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 06:32 AM.