Standard R32 BOV vs R33 BOV

[WLD747]

Hi Guys,

Just curious to know if they are the same and which one is better. Do they bolt up to both cars?

Cheers

Ak

[BZERK32]

yeah im fairly sure that are similar and can be interchanged

[Leewah]

They are the same and can be interchanged quite easily.

[krzysiu]

both are very good, my stock r33 BOV is HOLDING 17PSI BOOST

[Leewah]

17? I held 36psi and all is well

[Ronin 09]

17?  I held 36psi and all is well

yeah but you have 2 of them!

[Leewah]

yeah but you have 2 of them!

Good point....I forgot bout that

[TTT]

R32 - R34 GTST, GTT bov's are the same and bolt on to each other. same 2 bolts...

TT's USELESS FACT: the gtst bovs are actually MITSUBISHI items.

Galant VR4 uses same bov.

GTR bovs are different to the GTST ones.

[FATGTS-R]

Wouldnt it make no difference how many BOVs are fitted in relation to holding boost?

1,2, 5 or 10 of them fitted I thought would not give any increase in boost holding ability.

e.g If you had one of the plastic Bosch BOV and it leaked at 10psi I thought fitting another one would result in both of them leaking at 10psi?

I always thought the reason for having more than one BOV was for when running higher boost levels (36psi) it gave more total cfm release as only one fitted would struggle to vent all the excess pressure/air?

[krzysiu]

Good point....I forgot bout that

hehehe dave :kick:

[Cizza]

Wouldnt it make no difference how many BOVs are fitted in relation to holding boost?

1,2, 5 or 10 of them fitted I thought would not give any increase in boost holding ability.

e.g If you had one of the plastic Bosch BOV and it leaked at 10psi I thought fitting another one would result in both of them leaking at 10psi?

I always thought the reason for having more than one BOV was for when running higher boost levels (36psi) it gave more total cfm release as only one fitted would struggle to vent all the excess pressure/air?

They would just share the pressure.

Each would pass half the air a single unit would vent.

Get two coke cans, shake them.

Poke one hole in can A.

Poke two holes in can B.

The pressure of the liquid ejected from Can B, will be half the pressure ejected from Can A.

Twice the total CFM, half the pressure.

[madmurf]

They would just share the pressure.

Each would pass half the air a single unit would vent.

No Each would pass half the air of one.

As the BOV is set at a X pressure they would release at the same time

under the same pressure but would escape twice as fast

Get two coke cans, shake them.

Poke one hole in can A.

Poke two holes in can B.

The pressure of the liquid ejected from Can B, will be half the pressure ejected from Can A.

Twice the total CFM, half the pressure.

Cant use the can theory here. Its Not the same as BOV as the BOV is pressure set.

Twice the CFM but same pressure as a single BOV.

__________________

[Cizza]

hehe

Yeah your exactly right in this context!

forgot about the set pressure..

I stand corrected, cheers madsmurf

[Cizza]

To combat boost holding problems, dont companies have varying strength springs that you can install? My cousins 1JZ's blow off valve had a different spring in it, so it would blowoff at lower pressures because he was running low boost...

The spring constant determines how hard a spring is, get a stiff spring fabricated to suit?

[BlueRB240]

What about crushing the top of the bov? it looks just like the one I had on my 4g63. After I crused the top a lil it held 24psi no problem.

[TTT]

LMAO... I remember that mod on the galant..

very dodgey....

works though..