whats missing from my turbo on a 1.6 - 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 08-24-2008, 10:37 PM   #1
Newb
Thread Starter
 
Join Date: Aug 2008
Posts: 2
Total Cats: 0
Default whats missing from my turbo on a 1.6

Hey, new to miatas all around, current have a 97 turbo gst and a TT 5.0.. Those turbo kits were both isntalled by a pro but I am going to take a whack at installing it (with help that can install) but piece by piece...
In preperation for the turbo all I really did was upgrade the throttle body to a 1.8+the injectors to a 1.8, I have a 255 fuel pump & adjustable fuel regulator.....thats the preperation..as far as the kit...
I have a 1.6 manifold and downpipe for a t25 turbo. I have my td05 turbo from my eclipse before I upgraded that one.. I have a fmic & piping kit I know I will need the oil lines, gaskets etc.. what I don't know is the turbo to air filter. I know I will need a filter and possible a maf adapter but will that cover where I have to plug in the hoses out of the maf? is the 1.6 already maf? or will i need that. I really know nothing about the miata yet. I need to get power under the hood... I was passed by a civic like I was standing still and that hurts.
Michael Burns is offline   Reply With Quote
Old 08-24-2008, 10:42 PM   #2
Newb
Thread Starter
 
Join Date: Aug 2008
Posts: 2
Total Cats: 0
Default

oh yea, flowmaster exhaust and a super afc/electric boost/tt&volt meters+boost/airfuel/oilpsi/and digital rpm gauge. Z3fenders with a BIG hood scoop. . .not that this stuff matters too much but I can't see how to post a picture yet so ya'l get a visual..flowmaster makes it sound too obnoxious so I may change out that.
Michael Burns is offline   Reply With Quote
Old 08-24-2008, 11:30 PM   #3
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,107
Total Cats: 518
Default

your volt meter is most likely why you're so low on power, take it off and you'll gain ~50hp.

you need to get rid of the 225 and get the 190lph, a wideband (for some reason I think your 'airfuel' gauge is narrow) oil lines (feed and drain) and something to control your timing. you'll go from the filter to the AFM, to the turbo, not MAF.

P.S. you're going to get flamed for not starting in the newb section, be ready.
curly is offline   Reply With Quote
Old 08-25-2008, 10:52 AM   #4
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Lexington, SC
Posts: 2,084
Total Cats: 0
Default

yeah 1.6's have MAF 1.8's have AFM. Pick up an RX7 MAF
mazda/nissan is offline   Reply With Quote
Old 08-25-2008, 11:21 AM   #5
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

read my faq, that'll help get your started.
Braineack is offline   Reply With Quote
Old 08-26-2008, 01:08 PM   #6
Elite Member
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

Quote:
Originally Posted by mazda/nissan View Post
yeah 1.6's have MAF 1.8's have AFM. Pick up an RX7 MAF
other way around.
cardriverx is offline   Reply With Quote
Old 08-26-2008, 02:33 PM   #7
Elite Member
iTrader: (9)
 
Join Date: Aug 2006
Location: Concord, North Carolina
Posts: 4,173
Total Cats: 5
Default

Quote:
Originally Posted by cardriverx View Post
other way around.
miatamania is offline   Reply With Quote
Old 08-26-2008, 03:18 PM   #8
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Lexington, SC
Posts: 2,084
Total Cats: 0
Default

Quote:
Originally Posted by cardriverx View Post
other way around.
well I'm still not sure, I was basing my order on the assumption that the M in MAF was mechanical, not mass. Thought I had read mechanical somewhere. Oh well i was wrong. Yeah look under brain's FAQ, lots of info there.
mazda/nissan is offline   Reply With Quote
Old 11-20-2008, 08:50 PM   #9
Junior Member
iTrader: (1)
 
Join Date: Jan 2008
Posts: 161
Total Cats: 0
Default

Well, I was passed by a Civic with a B18C5 and a CRX with a K20 (or K24) engine, mine seemed as if it had only one cylinder running. I even pulled to the side of the road to make sure my car was running "fine".
psiturbo is offline   Reply With Quote
Old 11-20-2008, 09:08 PM   #10
Senior Member
iTrader: (14)
 
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,488
Total Cats: 0
Default

Quote:
Originally Posted by psiturbo View Post
Well, I was passed by a Civic with a B18C5 and a CRX with a K20 (or K24) engine, mine seemed as if it had only one cylinder running. I even pulled to the side of the road to make sure my car was running "fine".
Briggs & Stratton swap Miata?
lordrigamus is offline   Reply With Quote
Old 11-21-2008, 12:57 AM   #11
Junior Member
 
Join Date: Dec 2007
Posts: 159
Total Cats: 0
Default

"you need to get rid of the 225 and get the 190lph"

Just curious what the reasoning for that would be?
I've been running the 255 since '04 and have had no ill effects.
reason I ask is that I've heard many people give the same advice, but never a good reason to make the switch.

O.P. ditch the super afc unless you're just using it for the guages. the amount of change it'll make to your map is so very minimal that it's just about worthless. it's not that the afc is not a good product, just not a good product for a miata. there just isn't much head room in the factory computer for adjusting the pulse widths.

exactly what kind of adjustable fuel pressure reg are you going to use? just adjustable isn't quite going to cut it. you need something that is boost referenced somewhere between 5 and 8 lbs of fuel per lb. of boost.
dynokiller90 is offline   Reply With Quote
Old 11-21-2008, 11:51 AM   #12
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

Quote:
Originally Posted by dynokiller90 View Post
"you need to get rid of the 225 and get the 190lph"

Just curious what the reasoning for that would be?

most have found, that unless you have a 99-00, it provides to much flow into the rail and overloads the FPR. Instead of maintain fuel around 35-48psi, you may see a static 50-60psi. This will cause you to run rich out of boost.
Braineack is offline   Reply With Quote
Old 11-21-2008, 12:16 PM   #13
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,915
Default

Quote:
Originally Posted by mazda/nissan View Post
well I'm still not sure, I was basing my order on the assumption that the M in MAF was mechanical, not mass.
Technically, MAF = Mass Airflow Sensor (1.8), and VAF = Volume Airflow Sensor (1.6.)

This business with calling it an AFM is the root of much confusion. They're both Airflow Meters, it's just that one measures volume (which is temperature and pressure dependent), and the other measures mass (which is not.)


To answer the OP: the 1.6 Miata uses a mechanical VAF sensor, and it is not interchangeable with the MAF sensor that came on in '94.

That said, I wholeheartedly disagree with your entire approach to this. Unless you are completely phobic of computers and wiring, I'd strongly suggest that you sell off your AFPR, your fancy fuel pump, your SuperAFC and your 1.8 injectors, and instead install a proper engine management computer with correctly sized injectors, and leave the fuel system alone.
Joe Perez is offline   Reply With Quote
Old 11-21-2008, 12:40 PM   #14
Senior Member
iTrader: (2)
 
Join Date: Nov 2007
Location: orlando, FL
Posts: 558
Total Cats: 0
Default

where the mother **** is hustler when u need him?
XxGoKoUxX is offline   Reply With Quote
Old 11-21-2008, 08:00 PM   #15
Junior Member
iTrader: (3)
 
Join Date: May 2008
Location: palm beach florida
Posts: 134
Total Cats: 0
Default

and a tuner toy fuel rail
Brian-bbc is offline   Reply With Quote
Old 11-21-2008, 08:17 PM   #16
Elite Member
iTrader: (24)
 
kotomile's Avatar
 
Join Date: Oct 2006
Location: Monterey, CA
Posts: 7,578
Total Cats: 40
Default

Quote:
Originally Posted by ca18det View Post
and a tuner toy fuel rail
Those are a nice touch, but not necessary.
kotomile is offline   Reply With Quote
Old 11-22-2008, 01:10 PM   #17
Junior Member
 
Join Date: Dec 2007
Posts: 159
Total Cats: 0
Default

Quote:
Originally Posted by Braineack View Post
most have found, that unless you have a 99-00, it provides to much flow into the rail and overloads the FPR. Instead of maintain fuel around 35-48psi, you may see a static 50-60psi. This will cause you to run rich out of boost.
That makes sense. I guess I never ran into any problems because I quickly ditched the factory regulator. I never saw the point of using two so it was replaced with an A/N fitting.
dynokiller90 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Garrett Turbo, 1.8 Oil Pan, & Misc. Stuff nbdooey Miata parts for sale/trade 9 08-30-2017 10:50 PM
Another Cast Manifold Corky Bell Prefabbed Turbo Kits 18 11-22-2016 10:01 PM
Need help - Stock Balancer and Fastforward overlay pulleys Frank_and_Beans Supercharger Discussion 13 09-12-2016 09:17 PM
Missing/knock at idle, can someone point me in the right direction? Mikel MEGAsquirt 4 09-28-2015 05:46 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 02:48 AM.