Plenum & Bov

[STAGE1]

Hi all

I was thinking of changing to a ford facing plenum to reduce the pluming and make the top of the engine look neater but then I wondered where I was going to put the bov. Is there a position that still makes it a plum back and how hard is this to do.

Thanks

Phil

[Duncan]

at the risk or (re)starting an argument....I changed to FF plenum and didn't worry about the BOV.

Other than the silly noise when I change gears flat out, no issues so far. It is possible there is an impact on potential turbo life but there is a lot of opinions out there on that one. I was willing to take the chance as its a cheap turbo

[darrinspencer]

Hi all

I was thinking of changing to a ford facing plenum to reduce the pluming and make the top of the engine look neater but then I wondered where I was going to put the bov. Is there a position that still makes it a plum back and how hard is this to do.

Thanks

Phil

Doing this at the moment. Generally put the bov between the the outlet of the fmic and the throttle body, so on the drivers side under the battery. Then you will need to run a pipe back to the inlet side, similar to a GTR setup.

I have a spare GTR BOV for sale while you are at it.

[Mr GTS4]

any updates on it darrin?

i still haven't started mine, still working on my ute

[zebra]

could always run it on the hot side piping, makes it easy to run the plum-back pipe

[darrinspencer]

any updates on it darrin?

i still haven't started mine, still working on my ute

Pretty much ready to bolt up. I have been holding off because I was going to not use this plenum and buy a plazmaman instead, until I worked out the PM plenum will hit the bonnet with the rb30 in the future.

Might try and get some done tonight

[KiwiRS4T]

could always run it on the hot side piping, makes it easy to run the plum-back pipe

I am planning to do this for mine as well. I have seen suggestions that it should be near the throttle body or near the turbo but when the bov opens pressure drop is the same everywhere so really it makes no difference where you put it so on the hot side is neatest.

[STAGE1]

Thanks for the info.

I think I will go with Darren’s idea and put it on the driver’s side under the battery and plum it back. I will have a closer look this weekend. I was hoping to reuse the bov to keep cost down.

Thanks again

Phil

[66yostagea]

I ended up putting mine on the hot side of the front mount as it made it much easier to pipe up. I must confess that I forgot I was running a panel filter and where I put the BOV it fouled the air box. Not to worry I went pod.Looks nice.

For someone who wants to go FF, if you can afford it, Darrin's idea is better. Get a Plazman. All you have to do is take the top off. All that stuff under the runners is a PITA.

Also if you are careful you don't have to move the washer bottle as Duncan had to do. And you can get two helicopter batteries on the tray giving 540 cca.

I'm fairly IT illiterate but if anyone wants some pics I will need an email address. So PM me.

[eXquiSit]

which plenums do you guys end up using?

[KiwiRS4T]

Chinese made GReddy copy.

[66yostagea]

which plenums do you guys end up using?

Yes, JJ Chinese. I must say it is VERY well made.

[Mr GTS4]

i'm going to be using a std gtr setup but it has been welded to the bottom runners of a rb25 so it will bolt up. will be using std injectors as well, just have to get the neo fuel rail to bolt to the manifold and will run the rb26 aac valve becuase thats what the bottom air box has been made up to use.

ive been alittle busy with my hilux atm cos the engine died, and the stag is the MRS car which needs to be on the road all the time so playing with it is very minimal.

the only real other issue i have with it is the TPS. the neo and the gtr use different setups. wiring is similar in that they have 6 wires, 3 for tps and 3 for auto. i just need to know which colours are what on both to wire up.

here are some pics of my ute conversion too

[eXquiSit]

ah ok... so the greddy copies are same for r33 and r34?

so you can use aftermarket top feed fuel rail for r33 then?

[Oddy man]

Currently I run a chinese Greddy copy.

Worked ok, the front of it was cut off because of fitment and to weld the tb on but now theres a pinhole leak on one of the runner arms.

Bought a plazmaman and powdercoated intake runners so itll be on when Im more cashed up

As for fitment: went on ok (see above about the cut/weld, needed an SR20 throttle cable (the old one wasnt long enough? stupid chinese 80mm tb with no tps) custom piping made to get to the fmic, BOV is on that pipe about 200mm away from the fmic core (turbosmart dual port)

Also, needed a smaller battery so it wasnt in the way.

On a side note, a mate has put a plazmaman on his r33 (rb30/25) It fouls on the bonnet!!! I think this is only due to the extra 30mm height of the rb30 block but when buying a plenum beware of its height (if it runs on the standard runners) and be wary of the battery, buy a smaller one/rotate it for fiment