New BOV for FM II - 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 03-11-2007, 01:45 AM   #1
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: -1
Default New BOV for FM II

Hey guys, well I have been having alot of problems with my GFB BOV so I am just going to get a new BOV. My current BOV doesnt have a flange that it mounts to the piping. It has a little protrusion with a rubber coupling that the bov kind of just sits in. The only BOV I have seen that seem to have this same/similar design are the RFL BOV's. Looks like they would fit right into the rubber coupler. Heres a link to the site.

http://www.turboxs.com/shop_prod.php?what_category=2

Was looking at the: ( I'm not trying to just get a really loud BOV, looks like
these mount the same way as my GFB. )

The Blow Off Valve Type H-RFL or
Blow Off Valve Type H
or the Blow Off Valve Type S

You guys think that, that will mount up in? The GFB BOV just really sucks. I have read from some other forums that alot of people have problems with the BOV and just end up getting a new one.
ak47bravo is offline   Reply With Quote
Old 03-11-2007, 03:12 AM   #2
Elite Member
 
Join Date: Jan 2005
Location: vancouver canada
Posts: 1,618
Total Cats: 0
Default

I have a Turbosmart supersonic and a FM2 turbo kit.
The Turbosmart BOV is a perfect fit for the TB inlet pipe.

If you can,try to get a better BOV.I have heard the TurboXS stuff is really not that good quality.
spike is offline   Reply With Quote
Old 03-11-2007, 03:21 AM   #3
Senior Member
 
Join Date: Dec 2005
Posts: 865
Total Cats: 0
Default

turbo xs is junky,i had a rfl.that i made into the recirculating one.
im rocking a knock off hks,i like it.also its good for venting to the atmosphere because because of the valve diaphram.
turbopezz is offline   Reply With Quote
Old 03-11-2007, 12:48 PM   #4
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: -1
Default

Quote:
Originally Posted by spike View Post
I have a Turbosmart supersonic and a FM2 turbo kit.
The Turbosmart BOV is a perfect fit for the TB inlet pipe.

If you can,try to get a better BOV.I have heard the TurboXS stuff is really not that good quality.
really? I'll check it out. Thanks for the help guys. That supersonic BOV will mount right up to the pipes little rubber cuppler?
ak47bravo is offline   Reply With Quote
Old 03-11-2007, 01:59 PM   #5
Junior Member
iTrader: (1)
 
Join Date: Oct 2004
Location: Haarlem ,the Netherlands
Posts: 453
Total Cats: 0
Default

i havea blitz, love it, like this one...

http://cgi.ebay.nl/BLITZ-DD-TYPE-BLO...QQcmdZViewItem


btw if you cannot buy because seller only ships to europe i can help...
greddymx5 is offline   Reply With Quote
Old 03-11-2007, 02:39 PM   #6
Elite Member
iTrader: (3)
 
Join Date: Dec 2004
Location: Houston
Posts: 2,904
Total Cats: 4
Default

turbo xs is a POS for ricers that like loud noise. There are write ups on how to clean up the inside of the BOV that FM provides so that it does not stick, etc. Try that first.

IMHO HKS SSQBOV is the best thing out there. It even has a kit now to make it recirculate.
Pitlab77 is offline   Reply With Quote
Old 03-11-2007, 03:00 PM   #7
Elite Member
 
Join Date: Jan 2005
Location: vancouver canada
Posts: 1,618
Total Cats: 0
Default

Quote:
Originally Posted by Pitlab77 View Post
turbo xs is a POS for ricers that like loud noise.
True that!
Turboxs is a cheap copy of the Turbosmart BOV's.
spike is offline   Reply With Quote
Old 03-11-2007, 03:04 PM   #8
Elite Member
 
Join Date: Jan 2005
Location: vancouver canada
Posts: 1,618
Total Cats: 0
Default

Quote:
Originally Posted by ak47bravo View Post
really? I'll check it out. Thanks for the help guys. That supersonic BOV will mount right up to the pipes little rubber cuppler?
Yup.
The models that fit the FM pipe are:vee-port,plumb back,supersonic and megasonic.
spike is offline   Reply With Quote
Old 03-12-2007, 01:00 AM   #9
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: -1
Default

I don't see any prices on the turbosmart website. Help?
ak47bravo is offline   Reply With Quote
Old 03-12-2007, 02:03 AM   #10
Elite Member
 
Join Date: Jan 2005
Location: vancouver canada
Posts: 1,618
Total Cats: 0
Default

spike is offline   Reply With Quote
Old 03-12-2007, 08:17 AM   #11
Elite Member
iTrader: (8)
 
Join Date: Sep 2006
Location: Severn, MD
Posts: 1,927
Total Cats: 5
Default

Pick up a cheap used WRX BOV and a TXS BOV adapter. You can run 18 psi no problem. It's basically a DSM BOV with a different flange. If you need to run more than 18 psi, you can do a simple mod or crush it in a vice.

http://cgi.ebay.com/ebaymotors/WRX-A...spagenameZWDVW

Then you just mount the WRX BOV on the flange and put the nipple of the adapter in your current hose.

Frank
fmowry is offline   Reply With Quote
Old 03-12-2007, 11:51 AM   #12
Junior Member
iTrader: (1)
 
Join Date: Sep 2006
Posts: 464
Total Cats: 0
Default

Measure the coupler to see how big it is, it will probably be 25mm. If so here are some valves that will work:
http://www.forgemotorsport.com/conte...oduct=FMCL007P
http://www.forgemotorsport.com/conte...duct=FMDVSPLTR
http://www.forgemotorsport.com/conte...roduct=FMDVRSR
http://www.forgemotorsport.com/conte...roduct=FMDVRSA
http://www.forgemotorsport.com/conte...roduct=FMDV004
The last two are VTA valves. I can give you a discount if you are interested.
PAT! is offline   Reply With Quote
Old 03-12-2007, 12:54 PM   #13
Senior Member
iTrader: (6)
 
nester's Avatar
 
Join Date: Sep 2005
Location: Houston, TX
Posts: 812
Total Cats: 0
Default

I have a RFL on my miata.. It's ok as far as performance goes.. It's awesome in the sound department.. I have a HKS SSQV on my Scion, and it's great all around..

I run it open..
nester is offline   Reply With Quote
Old 03-13-2007, 10:33 PM   #14
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: -1
Default

Hey guys, well so today when I was driving, sounded like my bypass valve was finally opening completely. It still has compressor surge when I'm boosting less than 5 psi or so though. For some reason my turbo sounds a little bit quiter. IDK why it is probably just my imagination. So I guess I'm going to hold off on a new BOV for now.

Also I have heard that if you are running 12 psi + you should have a VTA not a recirc. valve. Is this true?
ak47bravo is offline   Reply With Quote
Old 03-13-2007, 11:23 PM   #15
Junior Member
 
Join Date: Jan 2007
Location: Philadelphia, Pa
Posts: 136
Total Cats: 0
Default

I dont understand why that would be. For instance a blow-off valve's job is to release air in order to prevent compressor surge. More boost means more pressure to be released, however ,whether it is released back into the intake or into the atmosphere should not matter. Just my 2 cents.
sickmiata09 is offline   Reply With Quote
Old 03-14-2007, 10:46 AM   #16
Junior Member
iTrader: (1)
 
Join Date: Sep 2006
Posts: 464
Total Cats: 0
Default

You probably need to grease the valve.
PAT! is offline   Reply With Quote
Old 03-16-2007, 12:21 PM   #17
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: -1
Default

Ya I need to take it apart and lube it up. 3 days ago is when my Bypass valve actually started opening up all the way and there was no compressor surge, but only boosting at anything higher than 5-6 psi. Also my turbo seems considerably quiter. Do you think my bypass valve could be slightly open? and is making me lose alittle boost?
ak47bravo is offline   Reply With Quote
Old 03-16-2007, 01:37 PM   #18
Junior Member
iTrader: (1)
 
Join Date: Sep 2006
Posts: 464
Total Cats: 0
Default

Its possible. If it was stuck closed for awhile and it has now worked itself (somewhat) free it is definitely possible that it is binding at other points.

You can use the test outlined here:
http://www.forgemotorsport.com/media...service(1).pdf
Its for our valves but I don't see why it won't work on GFBs inferior tripe

I didn't see a location in your profile, have you had a significant change in temperature recently?
PAT! is offline   Reply With Quote
Old 03-16-2007, 07:07 PM   #19
Junior Member
Thread Starter
 
Join Date: Dec 2006
Posts: 209
Total Cats: -1
Default

I'm on the outskirts of Houston and we have had a bit a temp change. It has been relatively cool for the last couple months and its warming up now.
ak47bravo is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Fab9Tuning's NC MX-5 Turbo Kit Discussion- EFR/Garrett V-Band FAB Prefabbed Turbo Kits 216 03-22-2017 05:00 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
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 AM
E-Manage Base Maps faviles5566 ECUs and Tuning 0 09-04-2015 12:50 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 04:20 PM.