Blow Off Valve on TGP Lower IC Pipe (PICS!!!)

[Invasion1]

its a GEN one DSM BOV which my Brother-in-law welded up for me last weekend...

we put a little Extention on the Pipe to Flange to make sure the Flange would not warp when welded....

Its on the Lower IC pipe between the Turbo Outlet and the Intercooler

lots of space to work with down there compared to the upper IC pipe

It Turned out nicely IMO

Im going to have to get/make a new gasket for the BOV to flange...  

I guess a Mitsubushi Dealer should have them or maybe a Chrysler???

anyway

Cheers
Dave

[RareGMFan]

Wow!  That looks very nice, sir.  Yeah, I'm pretty sure you should be able to still get them from the dealer.  Let me know if you come across another one.   :P   I wanted to pick up one on eBay, but for some reason, everyones bidding the hell out of them all of a sudden now.

[Invasion1]

Thanks!!!!

I bought that BOV off ebay last fall for $10 US shipped... :lol:


i have seen they go for much higher now......

I might have a line on another one down the road from me

if i find one its yours if you want it

the guy has tons of cars and there are a few DSM's all for parts

I will be there this weekend and i will see if i can find any for those whom are intrested......

Cheers
Dave

[R Dubya]

Davis if you happen to run across a replacement gasket please post the pn# if you don't mind.  Thanks a lot.

[turby]

I need a BOV. If there's more than one I want one.

[turbo90gp]

there are no gaskets for these BOV's

[Invasion1]

there are no gaskets for these BOV's

is that a statement or and Question???

and there is a gasket on mine in between the BOV and the Flange

if it floats your boat i will take a picture of it and show you......... :?

[TGPilot]

You need a gasket in between because the two surfaces are not machined perfectly. Even if they were the flange will distort from welding the flange to the pipe. Mitsubishi makes one (no I do not have a part #) but for just a couple of dollars go to an auto parts store and get either a rubber or cork gasket sheet and make one for it... 8)

[turbo90gp]

WEll hell When I went to autozone, they said that there werent any, so I Bought a DIY thingy-a-ma-bobber :shock:

[dbtk2]

I know, I'm a moron....

Why are all you guys putting BOV's on your TGP's???  Does it help performance any???

Shawn

[twinturbosedan]

I know, I'm a moron....

Why are all you guys putting BOV's on your TGP's???  Does it help performance any???

Shawn

a BOV helps lengthen the life of the turbo.  when you let off the gas pedal, the throttle slams shut and the boost pressure has nowhere to go so the pressure wave will slow the turbo down quick.  considering a turbo can spin at upwards of 100,000 RPM, this is very hard on turbos.  with a BOV, the moment you let off the gas pedal, you no longer see boost in the intake - you see vacuum.  the BOV gets the vacuum signal and opens up allowing the pressure wave to escape and not hurt the turbo (which makes that "pshhhttt" sound).  it also helps performance since the turbo is not slowed down by the pressure wave - it's still spinning fast and does not have to spool up again after you get back on the throttle.  a BOV is more important for cars with a manual tranny since the throttle shuts at every shift, but it is still important on cars with automatics.

[90TGP]

You can buy gaskets from Road/Race Engineering, a DSM parts supplier.

http://www.roadraceengineering.com/flangesandgaskets.htm

[TGPilot]

Mitsubishi Gasket P/N - MR312761
Price - $3.00
1G BOV Flange to BOV Gasket

8)

[RareGMFan]

WEll hell When I went to autozone...

Well there's your first problem.   :wink:

[dbtk2]

I know, I'm a moron....

Why are all you guys putting BOV's on your TGP's???  Does it help performance any???

Shawn

a BOV helps lengthen the life of the turbo.  when you let off the gas pedal, the throttle slams shut and the boost pressure has nowhere to go so the pressure wave will slow the turbo down quick.  considering a turbo can spin at upwards of 100,000 RPM, this is very hard on turbos.  with a BOV, the moment you let off the gas pedal, you no longer see boost in the intake - you see vacuum.  the BOV gets the vacuum signal and opens up allowing the pressure wave to escape and not hurt the turbo (which makes that "pshhhttt" sound).  it also helps performance since the turbo is not slowed down by the pressure wave - it's still spinning fast and does not have to spool up again after you get back on the throttle.  a BOV is more important for cars with a manual tranny since the throttle shuts at every shift, but it is still important on cars with automatics.

Thank you for that explanation...that makes a lot of sense now.  I always thought BOV's were just for the sound, but my STE is so friggen loud already that nobody ever believes me when I say it doesn't have a BOV, so I was trying to figure out why everyone would want to spend money to get a sound that the car already had.  So I guess thats something to look into in the future when I do my 5 speed swap.

Shawn