Ok, I've searched, but I cannot find a diagram on how to install a blow off valve ont our cars. www.turboste.com has been taken down, and most I've read are just about what type of BOV they are using. So I need two things:
1) Diagram to install, and WHERE to install, BOV.
2) What type do I use? Recommendations...I'm thinking about just using a standard Eclipse Gen1 BOV and flange, non-crushed of course, but I'd like to know what everyone else uses.
I just got a Gen 1 DSM BOV complete with flange yesterday. I'll send you some pics later once I get it welded on.
Nick
Now you got the steel flange, not the aluminum, correct?
Quote from: grinders_18 on January 26, 2008, 06:00:16 PM
Now you got the steel flange, not the aluminum, correct?
Thats correct. Our IC pipes are steel also.
Any idea where you will be mounting it...Upper IC pipe, I assume, but which location? And Nick do you have a diagram of how the vac lines and anything else should go?
Upper IC pipe, right by the TB. That is the best and most effective location. Putting it on the lower IC pipe is not as effective, because when you let off the gas and that butterfly closes, the air gets forced backward and you want it to be able to bleed off as soon as possible. I don't have a diagram of it.
Here's mine, it was installed by the last owner "SPEED", works great.
(http://inlinethumb63.webshots.com/40958/2236933120067971225S600x600Q85.jpg) (http://rides.webshots.com/photo/2236933120067971225PVoCPU)
I have mine on the lower IC mount.....I don't know how it works, but I know a number of guys are running them there with no problems. I'm not concerned about it, and IMO it looks better out of site, than stuck on the upper IC pipe.
I have mine on the lower charge pipe. I'll post pics up a bit later once I get them off my camera. I used a 1G DSM BOV, I actually have a spare one if you are interested.
Definately interested, and please post pics if you can. Dogbone, doesn't the BOV get a little too close to the hood, or is there still plenty of room?
Never seen BOV's that close on the turbo side before. Just about every Factory Turbo car all had the BOV's closer to the Throttle Body. But hey maybe you guys are onto something...or is this another "I saw my buddy do it to his car" trend.
Grinders: Dogbone's is a First gen as well...It will hold 20 PSI and if you crush the spring it will hold 25 Psi if you are crazy enough to throw that at your 6 Banger. Definitely your cheapest and efficient option that does the job, Looks nice a stock too.Also you can run a filter on the end of the BOV to keep the valve from taking in any dirt. I run the 1st gen DSM Bov on my Turbo Bike aswell and at 10 PSI that thing sounds good. As for where to Tee it into...any manifold source is fine, but don't take it off your Fuel Pressure Regulator!
If I would have kept the car I would have either Wrapped the IC pipes with header wrap and or got it Coated...there's alot of heat under the hoods of those cars...especially around the charge pipes. Would be wise to keep that heat out with some Header wrap or high heat coating.
No problem room wise with the hood, sounds great also.
Delete
Quote from: S P E E D on January 27, 2008, 06:50:05 PM
Never seen BOV's that close on the turbo side before. Just about every Factory Turbo car all had the BOV's closer to the Throttle Body.
Exactly. Every car I've ever looked at, that came factory with a BOV, had the BOV mounted within a few inches of the TB. Why do you think they all decided to mount them there? There IS a reason to mount your BOV near the TB and why all the other manufacturers mount it there also.
Well actually this subject has been talked about for years. I've heard both ideas and they both sound good enough for me to pick both, but I can't, so I had to choose upper or lower and I pick the upper because the same reason why your picked it. But that still don't make it the best. So I've been telling people and friends to think it over carefully themslves and decide. That makes it the best way. :icon_cool:
I put mine on the lower IC pipe and it works perfect. Not to mention its nicely hidden away.
Besides where is the air pressure coming from? The turbo. Why not relieve the pressure at the source?
Just my 0.02
Quote from: 93luminaz34 on January 28, 2008, 02:30:54 PM
I put mine on the lower IC pipe and it works perfect. Not to mention its nicely hidden away.
Besides where is the air pressure coming from? The turbo. Why not relieve the pressure at the source?
Just my 0.02
Some could say that the pressure is being reflected back from the TB plate causing the need for the BOV to be placed closer to the TB.
ok but the pressure in the piping between the turbo and the TB should be close to the same throughout the piping, because it is one cavity.
No matter where you relieve the pressure in that cavity, it will equalize the pressure throughout.
Maybe I'm wrong but it makes sense to me :laugh:
With the BOV mounted on the upper IC pipe when the BOV opens up the turbo is still spinning and it pushes air through the intercooler. When it cools it and you get on the throttle again, once the BOV closes you have a cool dense charge ready to go. In the case where the BOV is mounted on the Lower IC "Hot Side", when the BOV opens on the air is lost and you need to refill the intercooler again thus making it less efficient then the BOV mounted on the upper IC. And yes there is still enough air moving through the pipes even off Throttle.
That's why Manufactures mount the Blow Off Vavles on the Upper IC.
Although, you would want to catch the most quickest build up area of the most pressurized air before it hits the compressor wheel. That spot would be about 12"-16" away from the TB blade.
Well not all factory BOV's are mounted after the intercooler. My TIII dodge has The factory installed BOV mounted between the turbo and intercooler. Nice and quiet too it dumps it back into the rubber hose between the air cleaner and turbo stealth is good.
Tim
Who wants a quiet BOV.. the louder the better! :icon_cool: lol
My car is a girl and I like it when my women scream!
Quote from: grinders_18 on January 28, 2008, 08:03:40 PM
My car is a girl and I like it when my women scream!
QFT! :bonk: :smilielol:
Quote from: TGPvsTIII on January 28, 2008, 07:57:15 PM
Well not all factory BOV's are mounted after the intercooler. My TIII dodge has The factory installed BOV mounted between the turbo and intercooler. Nice and quiet too it dumps it back into the rubber hose between the air cleaner and turbo stealth is good.
Tim
Yes you are right Mopar did mount the BOV's on the Hot pipe.
Most TD's I see with BOV's changed, they placed the BOV on the upper (cooled) pipe.
Now, I'm curious about the crushed BOV's and non-crushed, since someone on here posted that a crushed one will hold more boost, yet quoting an old post from TGPilot:
Quote from: TGPilot on May 07, 2007, 09:09:02 AM
Make sure you get one that is not "crushed". The ricers have crushed them thinking this is a good answer to getting a more stable boost relief and as the ricers know if it is on the internet it must be true!
Anyone?
Quote from: grinders_18 on January 28, 2008, 08:25:48 PM
Now, I'm curious about the crushed BOV's and non-crushed, since someone on here posted that a crushed one will hold more boost, yet quoting an old post from TGPilot:
Quote from: TGPilot on May 07, 2007, 09:09:02 AM
Make sure you get one that is not "crushed". The ricers have crushed them thinking this is a good answer to getting a more stable boost relief and as the ricers know if it is on the internet it must be true!
Anyone?
Crushing has been around for a long time. Guys with power adders in the bike scene would "Crush" the top of the Fuel Pressure Regulators to get a few extra PSI of Fuel pressure when they were Spraying nitrous and such. Also applies for the BOV's...guys is the DSM world have been doing it since 1990. Again, DO YOUR OWN RESEARCH BEFORE ATTEMPTING TO MOD YOUR CAR. Aot of guys just get in a scene and assume because somebody else has done it, that it is the right way.
Crushing your BOV is like running high compression pistons in your engine. It increases the pressure. The two things are very different, but that is basically how it works.
(http://www.ls1tech.com/forums/images/smilies/threadworthlesswithoutpics.gif)(http://www.ls1tech.com/forums/images/smilies/LS1Tech/leghump.gif)
Here are pics of the BOV I'm selling. I'll have pics of mine mounted on the lower charge pipe later. Enjoy.
(http://im1.shutterfly.com/procserv/47b8df11b3127cceb51f55b6783e00000026102AYuHLZo3Zsk)
(http://im1.shutterfly.com/procserv/47b8df11b3127cceb51f6a74b94b00000026102AYuHLZo3Zsk)
(http://im1.shutterfly.com/procserv/47b8df11b3127cceb51f6b9af93d00000026102AYuHLZo3Zsk)
Not crushed.
Quote from: TGP Nick on January 28, 2008, 08:01:05 PM
Who wants a quiet BOV.. the louder the better! :icon_cool: lol
I want a quiet BOV stealth is good. I use to have a 440 challenger years ago and didn't have the cash to get a rear panel with the cut outs for the factory chrome tip dual exhaust. So I found in an exhaust book a dual set up for a big block with turn down pipes. The passenger side was the same pipe the 318 engine with single exhaust would have used. So when I put it on I hung the drivers side up real high so you couldn't see it when you pulled up behind me. Many people pulled up thinking single exhaust must be a 318. Just to find out they got beat by a 440. I don't like advertising I have a turbo car. I even have a plain jane 3 inch turn down exhaust pipe on the end of my 3 inch exhaust. I don't have a muffler on it but may some day. It really isn't too load. The exhaust did make the turbo spool sound a litle louder. remember stealth is good.
Tim
Quote from: TGPvsTIII on January 30, 2008, 07:47:18 PM
Quote from: TGP Nick on January 28, 2008, 08:01:05 PM
Who wants a quiet BOV.. the louder the better! :icon_cool: lol
I want a quiet BOV stealth is good. I use to have a 440 challenger years ago and didn't have the cash to get a rear panel with the cut outs for the factory chrome tip dual exhaust. So I found in an exhaust book a dual set up for a big block with turn down pipes. The passenger side was the same pipe the 318 engine with single exhaust would have used. So when I put it on I hung the drivers side up real high so you couldn't see it when you pulled up behind me. Many people pulled up thinking single exhaust must be a 318. Just to find out they got beat by a 440. I don't like advertising I have a turbo car. I even have a plain jane 3 inch turn down exhaust pipe on the end of my 3 inch exhaust. I don't have a muffler on it but may some day. It really isn't too load. The exhaust did make the turbo spool sound a litle louder. remember stealth is good.
Tim
:laugh: That's awesome! I had a 97 GTP I took the badges off...but with my 3.25 pulley the charger would wine so loud people knew what they were in for when they heard it!
Dogbone had a story sorta like that with his old 68 Stang Fastback...I'll let him tell you though!
GhrargH, PM me on the price and all. I want it!
Don't forget to get yourself a mounting flange and gasket Grinders.
Nope I haven't forgotten, but thanks! I keep my eye peeled on eBay.
Yeah, I bought a stock plain Jane 67 mustang fastback with a 289 with the 289 emblems on it, dropped a built up 428 Cobra Jet motor in it and a 4:11 gear, made a lot of money street racing until people caught on.
So, I know I can use any manifold vaccum line, with the exception of the FPR, but what line is everyone else using?
Quote from: grinders_18 on February 03, 2008, 06:28:01 PM
So, I know I can use any manifold vaccum line, with the exception of the FPR, but what line is everyone else using?
Use the one coming from the MAP sensor on the back of your upper intake manifold.
It just occured to me that I could run the line from the empty space where the EGR line used to be...anyone disagree?
Quote from: grinders_18 on February 03, 2008, 06:28:01 PM
So, I know I can use any manifold vaccum line, with the exception of the FPR, but what line is everyone else using?
Because I'm running a 5 speed, I've got mine hooked up to the line coming off the Throttle body for the tranny vacuum modulator. However I know Matt(93luminz34) has it hooked up to the back of the plenum where the main vacuum line for a NA car's brakes run to the brake booster.
As long as the source of the vacuum line comes from the engine side of the throttle body.
Edited to avoid embarassment LOL
This one, too...
Quote from: bake82 on February 03, 2008, 06:42:01 PM
Quote from: grinders_18 on February 03, 2008, 06:28:01 PM
So, I know I can use any manifold vaccum line, with the exception of the FPR, but what line is everyone else using?
Because I'm running a 5 speed, I've got mine hooked up to the line coming off the Throttle body for the tranny vacuum modulator. However I know Matt(93luminz34) has it hooked up to the back of the plenum where the main vacuum line for a NA car's brakes run to the brake booster.
Ditto, I have mine hooked up to the trans modulator port on the plenum.
Josh (Turbosedan) I think just taped a barb fitting into the port for the EGR and ran his from there.