vaccum source - single turbo

karl_tate · May 02, 2009, 06:29:50 PM

where can i get a vaccum for my omp valves etc, they were previously on the air filter but there is no way i can fit that now with the route of my top rad hose.

thanks

karl

hairyhoover · May 02, 2009, 07:14:01 PM

dude get rid and use premix!!!

When I did run the OMP i just left them open.

Thanks

shaunwil · May 02, 2009, 07:14:43 PM

I put a feed into the front of the filter.

Shaun

karl_tate · May 02, 2009, 07:26:06 PM

im going to be running premix as well darren.

just been reading this but there is so much conflicting information

http://www.rx7club.com/forum/showthread.php?s=&threadid=186477

yeh thats how it was shaun but i carnt get my filter on the turbo now unless i mod my rad again

shaunwil · May 02, 2009, 07:35:33 PM

Have you got an engine bay picture ??

Shaun

karl_tate · May 02, 2009, 07:42:30 PM

karl_tate · May 03, 2009, 11:42:15 PM

so can anyone tell me weather they need to be fed under vaccum, pressure or atmosphere??

slingo · May 04, 2009, 09:16:14 AM

Do you know where the pipes connect on a standard setup ? the pipe that connects by the throttlebody will be vaccum/boost and anything before turbo will be vaccum . have you got a vaccum nipple on your turbo cold side ? iirc you cant get a good vaccum from a air filter thats straight on the turbo,imo i would use a longer pipe to the turbo and T into that

karl_tate · May 04, 2009, 10:51:24 AM

on the standard setup they connect to pre-turbo as well

http://www.wrex-racing.com/docs/fd/vacuum_hose_diagram.jpg

it was a metal pipe which the filter was connected to before to get the vaccum source but do they really need to be connected to a vaccum??

shaunwil · May 04, 2009, 12:32:51 PM

What kind of filter are you running. If its got something between it and the filter then that should be ok. Not really sure what the japs run when they just have a mesh filter !!

Shaun

karl_tate · May 04, 2009, 06:23:14 PM

still undecided, was going to use some flexi hosing down toward the front bumper.

maybe the japs just dump the omp and use premix. but what i would like to know is weather its a vaccum they need???

FD3UK · May 04, 2009, 07:33:54 PM

They just need fresh air, connect via a Tee piece to a small engine breather type filter.

karl_tate · May 05, 2009, 05:34:25 PM

ah right cool, i know they only work one way but what does the fresh air actually do?? how do they work??

FD3UK · May 05, 2009, 06:55:19 PM

AnderwRX7 explains well HERE

rustyrex · May 05, 2009, 09:07:44 PM

:Thumbs-up I also read somewhere that the breather pipes connect to the primery intake because of emisions,not exhauste emissions but general oil vapor to atmosphere emisions.if the oil injector needs to breath then it must send out a bit of oil vapor,right?so mazda plumb the breather into the turbo intake to eliminate any oil vapor......I might be wrong tho lol:D