Where to mount BOV when using a 5th Injector ? - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

DIY Turbo Discussion greddy on a 1.8? homebrew kit?

LinkBack Thread Tools
Old 05-14-2009, 12:52 PM   #1
Thread Starter
Join Date: Apr 2009
Location: Wirral, UK
Posts: 2
Total Cats: 0
Default Where to mount BOV when using a 5th Injector ?

Hi guys,
Was wondering if you clever peole could could help me with a safe location for my BOV. I bought an MX5 with Turbo Greddy already fitted with an HKS piggy back ECU with a 5th injector. (the 5th injector is mounted in the cross over pipe from Turbo outlet to inlet manifold).

I am going to use it for a track day toy and so am fitting an oil cooler, intercooler and getting it properly set up on the rolling road to hopefully make it as robust as possible. I would also like to fit a BOV probably a twin piston type to atmos or a recirculating type. My 5th injector is getting mounted close to the inlet manifold and throttle body, but really the BOV should be mounted in same area, but my concern is that when the BOV realeases it will dischage the pressured air and fuel (which has been injected on the fifth inj) and so all it needs is an ignition source (anything with an internal combustion engine, especially a red hot turbo) and BANG, not what I want.

I could mount the BOV just after the turbo but would probably have the same problem, If I use a recirc typ then I'm putting fuel and air into the suction of a red hot turbo.

Is my theory correct or not, your help and thoughts would be welcomed.

..................Adam (from a cold damp UK)
swast4 is offline   Reply With Quote
Old 05-14-2009, 01:14 PM   #2
Hear me Meow
iTrader: (3)
skidude's Avatar
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 1,967
Total Cats: 11

I have no idea, but I'm in for the answer.

I would guess that if you VTA (or recirc, shouldn't matter) just after the turbo, and have the 5th injector just before the throttle, you won't have any fuel come back out the BOV.
skidude is offline   Reply With Quote
Old 05-14-2009, 01:18 PM   #3
Former Vendor
iTrader: (34)
ARTech's Avatar
Join Date: Mar 2009
Location: Dallas
Posts: 530
Total Cats: 9

Your BOV doesnt have to be by the TB. You can mount it right on the intercooler if you want.

Besides, I don't think you'll have as big a problem as you think. The HKS controller works off MAP not airflow so as soon as the throttle plate closes, fuel stops flowing.
ARTech is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 52 08-28-2016 04:18 AM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 03:23 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 09:39 AM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 12:15 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 09:30 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 On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 02:37 PM.