Quick Question About R33 Turbo On R32

[barnoon]

Hi guys,

Im planning to take the hi flow turbo off my R32 gtst and put a standard RB25 unit on it as im after response the high flow is too laggy for me.

As far as I can tell everything will bolt up the same but the only difference im noticing you will see in the pic below where ive circled it in red.

On my standard R32 turbo on the left their seems so be some sort of fitting for a hose, but on the R33 turbo on the right it doesnt exist at all theirs not even a hole their like on the R32 one.

What does this thing do and do I need to modify anything on the R33 turbo to suit?

Thanks

Edited February 9, 2009 by Dave69001

[QWK32]

on the R32 turbo that fitting is linked to the wastegate actuator. on the R33 turbo that fitting is on the bolt on elbow off the turbo, do you have the R33 elbow to go on the turbo?

if not, just run a vacuum line from the plenum to the wastegate actuator on the R33 turbo. when i did the same conversion on my 32 i drilled and tapped the compressor housing on the R33 turbo in the same spot as the R32 one. IIRC its 1/8" BSP-T.

[barnoon]

Yeah mate the R33 turbo does have the elbow on it, I couldnt see where on the elbow it would go so I took some pics of it and was hoping you could point that out to me

[QWK32]

lol, my bad, sorry. i thought it was on the elbow, it must be on the next piece of pipe after it. i never got the elbow when i got mine, i made one up.

[barnoon]

Oh ok so if I drill a hole with a thread into the elbow and screw that bit into it, it should be ok?

[sly32]

what i did, is drill a hole into the hot pipe of the intercooler and get a brass nipple and screw that into it, and used metal putty around it just to be sure,

[wannaslide]

me and my mates did the r33 turbo on my r32 the other week and we just ran the hose from the actuator and split it to the vacum hose from the 32 standard bov and the boost controller works fine

and i asked a performance mechanic if it is allright and they seen it and said it should be sweet

but could it cause some lagg the hoses being so long like cause the boost to take abit to register