adjusting blow off valve

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adjusting blow off valve

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Mitsubishi Forums >> Tech Help and Information >> Nitrous, Super Chargers, & Turbos >> adjusting blow off valve

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adjusting blow off valve - 11/19/2006 5:57:48 PM

GrayGST

Posts: 20
Joined: 5/31/2006
Status: offline

dumb question and im pretty sure i know the answer but when adjusting a greddy rs blow off valve. turning it more to the hard side does what and turning it to the soft side does what. my friend and i are have a little disagreement about it, thanks.

Post #: 1

RE: adjusting blow off valve - 11/19/2006 6:06:02 PM

silvercoupe97

Posts: 3420
Joined: 11/10/2006
Status: offline

Tightening increases the preload of the spring inside. So, if your bov is set to hold until 15psi from the factory and you tighten it, it will start to hold boost at a higher psi.
Loosening decreases the preload of the spring and will do the opposite of the above statement.

There shouldn't be a disagreement to this at all, it's pretty obvious

Just make sure that it doesn't cause a fluttering sound if you tighten it. That's called compressor surge and it's not good for turbos.
Although compressor surge at low boost of 5 or less won't hurt your turbo in the short run. Your bov is adjustable, so there should be no reason for any flutter, just loosen it a bit more.

< Message edited by silvercoupe97 -- 11/19/2006 6:08:45 PM >

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Thanks,
John

(in reply to GrayGST)

Post #: 2

RE: adjusting blow off valve - 11/19/2006 6:15:17 PM

GrayGST

Posts: 20
Joined: 5/31/2006
Status: offline

thought so, thanks.

(in reply to silvercoupe97)

Post #: 3

RE: adjusting blow off valve - 12/10/2006 11:19:55 PM

spyder4g63t

Posts: 184
Joined: 8/16/2006
Status: offline

about that flutter sound does it sound like a pidgeon??and my car is stock so how should i adjust my bov.....right now i was drivin and it made what i guess is the flutter sound so i should loosin or tighten...

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mods...fidanza clutch and flywheel..greddy rs b.o.v....greddy turbo timer...apexi n1 exhaust and downpipe..turbo xs hpb...urethane motor mounts..fidanza short shifter..

(in reply to GrayGST)

Post #: 4

RE: adjusting blow off valve - 12/10/2006 11:21:32 PM

spyder4g63t

Posts: 184
Joined: 8/16/2006
Status: offline

and another thing 2nd gens u have to recurculate the bov how is tha sound in ur car with intake and hard pipes does it make it louder even tho its connected to the intake?

_____________________________

mods...fidanza clutch and flywheel..greddy rs b.o.v....greddy turbo timer...apexi n1 exhaust and downpipe..turbo xs hpb...urethane motor mounts..fidanza short shifter..

(in reply to spyder4g63t)

Post #: 5