Different Injectors - Page 2 - 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 03-02-2010, 02:19 AM   #21
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

Quote:
Originally Posted by Benmazda25 View Post
Look I don't mean to be rude Mr. chicksdigmiatas, but you need to get over the noob thing. This is the 3rd time you have said it. Its not needed and kinda rude!!! Just because I wanted help on my car doesn't mean you have to rub in my face that your better then me. Think about it and maybe you'll make some more new friends. Compliments rather then put downs.

Oh and Braineack, THANK YOU for your help!! Its nice to know that some people are willing to help others.
next time just pm one of us man and save the lashing
magnamx-5 is offline   Reply With Quote
Old 03-02-2010, 10:39 AM   #22
Crumple Zone Tester
iTrader: (7)
 
mgeoffriau's Avatar
 
Join Date: Jul 2009
Location: Jackson, MS
Posts: 7,656
Total Cats: 447
Default

Scott, any reason you're messing around with 300ish cc injectors when RX7/RX8 injectors from 460cc to 550cc are fairly plentiful and cheap? Just curious, seems like most people go right for the RX7 stuff.
mgeoffriau is offline   Reply With Quote
Old 03-02-2010, 11:49 AM   #23
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Quote:
Originally Posted by mgeoffriau View Post
Scott, any reason you're messing around with 300ish cc injectors when RX7/RX8 injectors from 460cc to 550cc are fairly plentiful and cheap? Just curious, seems like most people go right for the RX7 stuff.
Might have been because this was almost 4 yrs ago, and when he was likely still compiling the PnP injector list.


Kudos to Benmazda for searching...it's okay to necro threads when it's on topic. Feel free to PM me if you need any more help. Was studying for an exam yesterday and really couldn't be bothered. I have sold those two sets of injectors though, but can help you find others that work.



ON TOPIC: Brainy, can I run two sets of (2) injectors with slightly different resistances (12.5 and 13.7) or will MS be unhappy? Should I pair them on shared output cylinders or mix?

195500-1370 (2)
195500-2020 (2) (these technically flow 5cc less - enough to matter?)


Thanks in advance
gospeed81 is offline   Reply With Quote
Old 03-02-2010, 12:36 PM   #24
Crumple Zone Tester
iTrader: (7)
 
mgeoffriau's Avatar
 
Join Date: Jul 2009
Location: Jackson, MS
Posts: 7,656
Total Cats: 447
Default

Quote:
Originally Posted by gospeed81 View Post
Might have been because this was almost 4 yrs ago, and when he was likely still compiling the PnP injector list.
Jiminy...didn't notice the dates on page 1.
mgeoffriau is offline   Reply With Quote
Old 03-02-2010, 12:37 PM   #25
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Quote:
Originally Posted by mgeoffriau View Post
Jiminy...didn't notice the dates on page 1.
Still pg1 for me, options>30 posts per page...makes life easier.
gospeed81 is offline   Reply With Quote
Old 03-02-2010, 12:41 PM   #26
Crumple Zone Tester
iTrader: (7)
 
mgeoffriau's Avatar
 
Join Date: Jul 2009
Location: Jackson, MS
Posts: 7,656
Total Cats: 447
Default

Quote:
Originally Posted by gospeed81 View Post
Still pg1 for me, options>30 posts per page...makes life easier.
I use a Lenovo S10 netbook for most of my web browsing...when the pages get too long, scrolling is painful.
mgeoffriau is offline   Reply With Quote
Old 03-02-2010, 05:05 PM   #27
Senior Member
 
Join Date: Nov 2007
Location: Belgium
Posts: 939
Total Cats: 59
Default

Quote:
Originally Posted by gospeed81 View Post

ON TOPIC: Brainy, can I run two sets of (2) injectors with slightly different resistances (12.5 and 13.7) or will MS be unhappy? Should I pair them on shared output cylinders or mix?

195500-1370 (2)
195500-2020 (2) (these technically flow 5cc less - enough to matter?)
Don't mix injectors. Not only is the flow different, the injector opening times might be different as well. Just get a set of matching injectors.
I bought a set of yellow RX8's (380cc) for like 50$.
WestfieldMX5 is offline   Reply With Quote
Old 03-02-2010, 05:07 PM   #28
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Quote:
Originally Posted by f_devocht View Post
Don't mix injectors. Not only is the flow different, the injector opening times might be different as well. Just get a set of matching injectors.
I bought a set of yellow RX8's (380cc) for like 50$.
I had 460cc matched set, but needed bigger injectors for built motor coming up.

I caught two seperate good deals on RX7 injectors, and didn't think it would be a big deal.

It seems to me that +-5cc is less than the seperation of most sets people send in for cleaning.
gospeed81 is offline   Reply With Quote
Old 03-02-2010, 05:10 PM   #29
Newb
 
Join Date: Feb 2010
Posts: 25
Total Cats: 0
Default

Well another problem came up last night. I put in the 195500-1650 from a 89 Turbo Probe. Their resistance was close, they sealed great, and I check the OHMs to see that the were in good working order, but the car wouldn't start. I also had to change out the pig tails no biggy. I check to see if I had fuel pressure. THats not the problems. Haven't checked for spark, but if the car ran 5 minutes ago with stock injects their should be an issue with spark right??? Any thoughts??
Benmazda25 is offline   Reply With Quote
Old 03-02-2010, 05:16 PM   #30
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

So you put them in and expected it to crank and idle?

Have you already got an AFPR?

I didn't go the bandaid route, but it seems to me you'd have to reduce base fuel rail pressure to run right outside of boost, and then increase it with boost to avoid going lean.

While the injectors themselves are PnP in fitment and electrical respects, it's not a plug and play mod. You're trying to pour in about 30% more fuel. FAQs and Wiki both clearly state factory ECU will only idle up to 305cc injectors, and even that requires playing with the AFM spring tension.

Are you smelling a lot of raw fuel during cranking?


EDIT:

http://miataturbo.wikidot.com/fuel-injectors
gospeed81 is offline   Reply With Quote
Old 03-02-2010, 06:02 PM   #31
Newb
 
Join Date: Feb 2010
Posts: 25
Total Cats: 0
Default

Yeah I have a AFPR both before the rail, then a FMU and then another AFPR. I know over kill but Meassure twice, and cut once. LOL As far as the AFM, should I turn it more Lean or Rich to correct?
Benmazda25 is offline   Reply With Quote
Old 03-02-2010, 06:12 PM   #32
Newb
 
Join Date: Feb 2010
Posts: 25
Total Cats: 0
Default

And call me stupid but on a FMU, does anyone know if the disc goes underneith the diapham or on top?
Benmazda25 is offline   Reply With Quote
Old 03-02-2010, 08:23 PM   #33
Junior Member
 
Join Date: Jan 2005
Posts: 60
Total Cats: 0
Default

Benmazda25, where you located, I have a RX7 AFM that might help with your bandaid setup....

I was gonna do 305cc's and the RX7 AFM for 10psi but never got around to installing it all.....that was a few years ago....
kevin02 is offline   Reply With Quote
Old 03-02-2010, 08:43 PM   #34
Boost Czar
Thread Starter
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,860
Total Cats: 1,788
Default

Braineack is offline   Reply With Quote
Old 03-02-2010, 09:08 PM   #35
Newb
 
Join Date: Feb 2010
Posts: 25
Total Cats: 0
Default

Kevin02 I'm in Oregon. Oh and thanks Braineck. I have it set up that way, but the kit didn't include the larger disc that the flat one fits into.

Last edited by Benmazda25; 03-02-2010 at 09:37 PM. Reason: Miss spelled words
Benmazda25 is offline   Reply With Quote
Old 03-02-2010, 09:10 PM   #36
Newb
 
Join Date: Feb 2010
Posts: 25
Total Cats: 0
Default

Okay, so I have a set of 94 injectors for a miata. Will those be fine?
Benmazda25 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 Yesterday 10:04 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 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 04:27 AM.