nozzle sizing - Miata Turbo Forum - Boost cars, acquire cats.

Methanol/Water Injection Place to talk about meth/water injection.
Sponsored by:
Sponsored by:

nozzle sizing

Old 05-25-2010, 04:28 PM
  #1  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Apr 2010
Location: On, Canada
Posts: 81
Total Cats: 1
Default nozzle sizing

hey i have an 01 engine w/turbo running about 10 to 13 psi looking for some suggestions for single nozzle set up for meth injection?
thanks.
Kris.
uavjeep is offline  
Old 05-25-2010, 05:49 PM
  #2  
Junior Member
iTrader: (1)
 
Join Date: May 2009
Location: Niagara Falls, ON
Posts: 431
Total Cats: 0
Default

stranges12712 is offline  
Old 05-25-2010, 07:33 PM
  #3  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Apr 2010
Location: On, Canada
Posts: 81
Total Cats: 1
Default

ok so i have looked through those sites and come up with a reccomendation to run up to 25% of overall fuel flow running stock injectors that works out to about a 4 or 5 gph nozzle give or take any suggestions. or examples of what others are running?

Kris.

i rounded up a 265cc(per min) to a 4gph nozzle at 251ml/min(1 cc =1ml) its close enough i can always turn down the meth pump output. either way thanks for the correction.

Last edited by uavjeep; 05-25-2010 at 09:29 PM.
uavjeep is offline  
Old 05-25-2010, 08:03 PM
  #4  
Senior Member
iTrader: (5)
 
Join Date: Sep 2009
Location: Lompoc, CA
Posts: 577
Total Cats: 13
Default

umm.. assuming 85% max duty cycle and 260 cc injectors that only works out to 3.5 gph nozzle. i don't know didly about nozzle sizing and very little about water injection, but your math seems off.
baron340 is offline  
Old 07-18-2010, 01:52 AM
  #5  
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,116
Total Cats: 39
Default

what sort of mix do you plan on running, pure meth?
aaronc7 is offline  
Old 07-19-2010, 07:46 PM
  #6  
Junior Member
Thread Starter
iTrader: (1)
 
Join Date: Apr 2010
Location: On, Canada
Posts: 81
Total Cats: 1
Default

yes mix somewhere in the 99.9 % range

Kris.
uavjeep is offline  
Old 07-19-2010, 08:23 PM
  #7  
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,116
Total Cats: 39
Default

Keep in mind most of these nozzles are rated at 100psi. And by that I mean a 3gph nozzle flows 3 gph at 100psi. throw on a 250psi pump and it's going to flow more. I remember reading some sort of estimate at 250psi on Devils own website but I can't remember... same theory as when you push more pressure thru stock injectors.

I ran a 3gph nozzle on my speed3, which put out around 320whp/345wtq... 4 or 5 sounds like a bit much for the power you're gonna be at. I wouldn't want that big of a percentage of my total fuel being meth anyways. Run out of meth, nozzle clogs.. boom!

Maybe Im not reading your post right but it sounds like you're running stock injectors.. I'm a big miata noob so I could be off here but it sounds like for your setup you'd normally need at least 460cc injectors. Stock are 265 for that car... some ballpark math not figuring it max duty cycles and all that:

460cc x 4 = 1840cc required we'll say

265 x 4 = 1060 .. that comes out to you needing something like 13 gph of methanol flow to have enough fuel, and that's not even right because methanol, like ethanol has less energy per set volume... why don't you just get some bigger injectors and EMS? then spray some water/meth as a safety blanket, that's what I always used it for
aaronc7 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
emilio700
Wheels and Tires
151
06-02-2017 03:36 PM
Corky Bell
Prefabbed Turbo Kits
18
11-22-2016 10:01 PM
Quinn
Cars for sale/trade
6
10-23-2016 08:58 AM
scratchedup
Engine Performance
2
09-13-2015 04:17 PM
Chooofoojoo
Miata parts for sale/trade
6
09-13-2015 11:01 AM


Thread Tools
Search this Thread
Quick Reply: nozzle sizing


Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.