Notices
DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Resizing Injectors?

Thread Tools
 
Search this Thread
 
Old Nov 11, 2012 | 05:48 AM
  #1  
AdoboMiata's Avatar
Thread Starter
Junior Member
iTrader: (3)
 
Joined: Dec 2011
Posts: 380
Total Cats: -17
Default Resizing Injectors?

I recently picked up a set of Oem 1.8 injectors. I was told it was re-sized to flow 550cc. Is this legit? I believe it's legit but you guys be the ones to judge. According to the seller it was done by Venom. I bought new O-rings from a local auto part store just to be safe. I will start data logging on my mspnp onceI test these out. I'll do a quick run and will post it up on here after.

In the pictures, there are 2 different injectors being compared.

Left = Supra 430cc Injectors.
Right = OEM tan top 1.8 "re-sized' to 550cc
Attached Thumbnails Resizing Injectors?-img_0032.jpg   Resizing Injectors?-img_0028.jpg   Resizing Injectors?-img_0031.jpg  
Old Nov 11, 2012 | 11:22 AM
  #2  
Miater's Avatar
Senior Member
 
Joined: Aug 2010
Posts: 936
Total Cats: 27
From: Arl. Texas
Default

Back in my Supra days I use to hear of people getting bad injectors directly from Venom. A very good friend of mine had ten out of twelve "550s" that wouldn't flow 550 on a bench test and the patterns were all over the place. Ended up with 12 injectors I wouldn't trust in someone else's Honda. Full refund and never again. It's your motor, put them in turn the boost up and find out the hard way or have them bench tested. Drilling the injector isnt resizing them.
Old Nov 11, 2012 | 11:26 AM
  #3  
hustler's Avatar
Tour de Franzia
iTrader: (6)
 
Joined: Jun 2006
Posts: 29,085
Total Cats: 375
From: Republic of Dallas
Default

Yeah, I would not run those. lol
Old Nov 11, 2012 | 11:39 AM
  #4  
Savington's Avatar
Former Vendor
iTrader: (31)
 
Joined: Nov 2006
Posts: 15,442
Total Cats: 2,106
From: Sunnyvale, CA
Default

lol, people still send money to Venom?
Old Nov 11, 2012 | 02:45 PM
  #5  
AdoboMiata's Avatar
Thread Starter
Junior Member
iTrader: (3)
 
Joined: Dec 2011
Posts: 380
Total Cats: -17
Default

More reviews?
Reply
Leave a poscat -2 Leave a negcat
Old Nov 11, 2012 | 02:55 PM
  #6  
hustler's Avatar
Tour de Franzia
iTrader: (6)
 
Joined: Jun 2006
Posts: 29,085
Total Cats: 375
From: Republic of Dallas
Default

Originally Posted by AdoboMiata
More reviews?
You're a ------.
Old Nov 11, 2012 | 03:37 PM
  #7  
AdoboMiata's Avatar
Thread Starter
Junior Member
iTrader: (3)
 
Joined: Dec 2011
Posts: 380
Total Cats: -17
Default

Originally Posted by hustler
You're a ------.
ok
Old Nov 11, 2012 | 03:41 PM
  #8  
18psi's Avatar
VladiTuned
iTrader: (76)
 
Joined: Apr 2008
Posts: 35,821
Total Cats: 3,482
Default

you bought 4 turds of diarhea

throw them in the garbage and start over
Old Nov 11, 2012 | 03:45 PM
  #9  
AdoboMiata's Avatar
Thread Starter
Junior Member
iTrader: (3)
 
Joined: Dec 2011
Posts: 380
Total Cats: -17
Default

Originally Posted by Miater
Back in my Supra days I use to hear of people getting bad injectors directly from Venom. A very good friend of mine had ten out of twelve "550s" that wouldn't flow 550 on a bench test and the patterns were all over the place. Ended up with 12 injectors I wouldn't trust in someone else's Honda. Full refund and never again. It's your motor, put them in turn the boost up and find out the hard way or have them bench tested. Drilling the injector isnt resizing them.
Will I be able to see the difference when I data log with the mspnp?
Old Nov 11, 2012 | 03:59 PM
  #10  
AdoboMiata's Avatar
Thread Starter
Junior Member
iTrader: (3)
 
Joined: Dec 2011
Posts: 380
Total Cats: -17
Default

mmm, how about these? Mazda RX7 Fuel Injectors 89 91 Non Turbo 4 | eBay
Old Nov 12, 2012 | 01:01 PM
  #11  
CGLDorikin's Avatar
Newb
iTrader: (1)
 
Joined: Jul 2010
Posts: 24
Total Cats: 0
From: Minnesota 55126
Default

The rx7 injectors would work better than the ones from Venom if they are in good condition.
Old Nov 12, 2012 | 01:10 PM
  #12  
thenuge26's Avatar
Elite Member
iTrader: (2)
 
Joined: Aug 2012
Posts: 3,267
Total Cats: 239
From: Indianapolis
Default

Stop asking questions and start reading this thread: https://www.miataturbo.net/diy-turbo...big-post-4288/
Old Nov 12, 2012 | 04:32 PM
  #13  
AdoboMiata's Avatar
Thread Starter
Junior Member
iTrader: (3)
 
Joined: Dec 2011
Posts: 380
Total Cats: -17
Default

Originally Posted by CGLDorikin
The rx7 injectors would work better than the ones from Venom if they are in good condition.
Thank you.
Reply
Leave a poscat -1 Leave a negcat
Old Nov 12, 2012 | 07:00 PM
  #14  
karter74's Avatar
Senior Member
iTrader: (4)
 
Joined: Feb 2006
Posts: 690
Total Cats: 23
From: Centennial, CO
Default

I wouldn't buy any used injectors without already planning on having them professionally cleaned.
Old Nov 12, 2012 | 10:35 PM
  #15  
RyanRaduechel's Avatar
Senior Member
iTrader: (10)
 
Joined: Jul 2009
Posts: 1,405
Total Cats: 149
From: Oakdale, CA
Default

Let me help you out with that, buy these.
Old Nov 13, 2012 | 01:41 AM
  #16  
pitobread's Avatar
Junior Member
 
Joined: Sep 2012
Posts: 73
Total Cats: 0
Default

What they do is "decap" them, the problem is the flow rates at that point are all over the map. Unless you buy 100+ and decap them all and flow and pair them up the could vary by 5% or more. Not worth the hassle.
Old Nov 13, 2012 | 02:12 AM
  #17  
EO2K's Avatar
Elite Member
iTrader: (37)
 
Joined: Apr 2010
Posts: 10,477
Total Cats: 1,924
From: Very NorCal
Default

Originally Posted by RyanRaduechel
Let me help you out with that, buy these.
Why not Injector Dynamics fuel injectors - Miata @ 949Racing or even ID1000 @ Trackspeed Engineering ? Lets get some love for our sponsors up in herr!

Another decent OEM option are the RX8 Denso 195500-4450 injectors.

The RX7 Bosch EV1 style units are not bad, they are just REALLY old technology. If you are going to spend money, I recommend you buy something that was designed after 1970s.
Old Nov 13, 2012 | 03:43 AM
  #18  
RyanRaduechel's Avatar
Senior Member
iTrader: (10)
 
Joined: Jul 2009
Posts: 1,405
Total Cats: 149
From: Oakdale, CA
Default

Well yes, you can always support the vendors, I was just demonstrating the ID1000 injectors is all.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
Apr 12, 2021 04:21 PM
StratoBlue1109
Miata parts for sale/trade
21
Sep 30, 2018 01:09 PM
90 Turbo
MEGAsquirt
19
Oct 19, 2015 03:23 PM
Trent
WTB
2
Oct 1, 2015 12:15 PM
The Gleas
MEGAsquirt
3
Oct 1, 2015 09:30 AM




All times are GMT -4. The time now is 02:17 AM.