BOV Options

Hey guys,

Im currently running a Synapse Synchronic BOV on my 98 sti coupe, just wondered what peoples thoughts were regarding the Tial Q 50mm v-band and the Turbosmart Race Port 50mm v-band BOVs?

What sort of power and or boost must you be producing in order to run a BOV of this size?

The Synapse Synchronic is a great BOV as it utilises both boost and vacuum to operate it which means you'll never have any issues with loosing pressure, in comparison to BOVs that use springs, which can leak if your not running the right size or combinations of springs.

Has anyone had any experience with the Turbosmart or Tial 50mm BOVs?

Any help greatly appreciated.

Cheers.

Boon has a 50mm tial said it was loud iirc. Nfi on performance.

Big Bubba would be the one to get/try i have it on my shopping list, think it would work nicely for high boost and i like the plumb back option

http://www.turbosmartusa.com/product/big-bubba

so you want a bov with a piston bigger than your comp wheel ?

 lachlan said:

so you want a bov with a piston bigger than your comp wheel ?

Who said its bigger than my comp wheel?

I ran a tial 50mm bov on my sr20 drift car with a gt3076r / valve worked very well and had no compressor surge

Im running a gt3082, around 28 psi on high boost producing 430kw atw. Will my current Synapse Synchronic handle the task or would it pay to change to something larger? I think the Synapse is 38mm.

Cheers for the help

 nismovzr2003 said:

Im running a gt3082, around 28 psi on high boost producing 430kw atw. Will my current Synapse Synchronic handle the task or would it pay to change to something larger? I think the Synapse is 38mm.

Cheers for the help

Only person that can answer that is you. Do you get flutter back thro the turbo or not? Youtube dosepipe if you dont know the sound youre looking for.

Btw have you got a dyno sheet for that? What size rear housing? 2.1L iirc?

 nismovzr2003 said:

Im running a gt3082, around 28 psi on high boost producing 430kw atw. Will my current Synapse Synchronic handle the task or would it pay to change to something larger? I think the Synapse is 38mm.

Cheers for the help

Well done must be a very good setup you got there.. tell us more!

What evowrx said, if you dont have comp surge with the Synapse then its still doing its job.

 evowrx said:

Only person that can answer that is you. Do you get flutter back thro the turbo or not? Youtube dosepipe if you dont know the sound youre looking for.

Btw have you got a dyno sheet for that? What size rear housing? 2.1L iirc?

That power/boost was on my previous engine, ODB 2.0L, factory v3 heads, however, that was set as my high boost which I never really ran. Yes, I have dyno sheet I can upload. I now have a CDB 2.1L, still running v3 heads but with Kelford cams and adjustable cam gears, I haven't had this tuned yet so I'm interested to see what she will do. The Garrett GT3082R had the .63 exhaust housing complete with anti surge drilling.

cheers.

 hijacka said:

Well done must be a very good setup you got there.. tell us more!

What evowrx said, if you dont have comp surge with the Synapse then its still doing its job.

All the usual type mods, Killer B increased capacity and baffled sump, Sard 800cc injectors & FPR, Tial 44mm v-band wastegate, flipped manifold c/w FMIC, aftermarket oil cooler and power steering cooler, GFB pulley kit, Eagle Rods, Wiseco Pistons, Link G4, etc.

As I mentioned previously, this was more so just some power runs on the dyno, I didn't use this all the time. Taking into consideration the block was OD I was very hesitant on running that much power, which I didn't.

I now have a CDB for some added security I guess you could say.

I'll put up the dyno sheet when I get home.

Cheers.

How did the ODB look on disassembly and what was daily tune psi/kw atw? V3 STI heads Im guessing?

Was it Kent that tuned the original build? Keen to see the dyno sheet thats a lot of power for said turbo esp with that housing. 800cc injectors are small for that power.

Must say these 2.1/2.2 displacement jobs look like the goods.

Guess until your cars tuned you dont know how your bov is going to go. Isnt going to alter tune changing bov out after the tune tho worry about it later imo.

Apologies guys!!

430hp, 320kw atw, god im stupid lol

What i thought but still keen to see the sheet. Who tuned it?

 evowrx said:

What i thought but still keen to see the sheet. Who tuned it?

Carl at E&H Motors in Puke. Ive got an electonic sheet on my comp, will find an post