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lethal231ci

The Next Generation
Joined
Jul 9, 2006
Messages
212
Is there a good purpose for blow-off valves for GN's? I know alot of import guys do it just for the sound and Ive heard only one GN with a BOV. Is anyone running a BOV on this site? If so...how do you like it?
 
Bov

There are alot of threads started about this topic. You should do a search on it. There are lots of mixed opinions on BOV. You open up a can of worms with this ?
 
There isn't enough popcorn on earth for me to enjoy this. Maybe I'll switch to booze.

The skinny:

Purpose: to relieve boost pressure between shifts with a manual transmission.
Byproduct: weird sound

The issue here: Turbo life
Not so much for the sound with this group rather than a belief that it will protect your turbo from shock when the throttle closes.

The other side:
While no one has proven either way that a relief valve helps or hurts, some are still hard on the fact that it helps, and others hard on the fact that it does not help.

In conclusion: It is a matter of preference. If you want one, get one. OR save the money and start the usual battle proven modifications/tuning required to have a healthy TR.
 
BOV's weren't built only for relieving pressure while shifting in a manual, they serve purposes with both auto and manual trannies.

The "issue" is more of the purpose for me, anything that helps protect turbo life = good

The other side:
While no one has proven either way that a relief valve helps or hurts
well it is proven, how would we know there is less stress when using a BOV if it wasn't proven. Relieving pressure relieves stress, less stress equals longer life I thought. Nothing really to prove imho. I haven't found anyone saying that a BOV hurts your turbo or motor.

here we go again
 
Here we go again is right...:biggrin:

I have relatively no opinion on the matter. I just know I don't want one.

I agree with both sides of the matter.

They have proven that for an automatic car?
 
Should've used the search engine first haha! I got what I needed and made up my mind so....discussion ended?! :D
 
Here we go again is right...:biggrin:

I have relatively no opinion on the matter. I just know I don't want one.

I agree with both sides of the matter.

They have proven that for an automatic car?

be it manual or auto is a secondary question. we first agree that pressure relief is good right, good for turbos, less stress longer life train of thought? Therefore if that were true the benefits would be seen in any kind of turbo car with either a auto or a manual transmission, just more relief would be seen in the manual due to shifting manually. But remember, that is not the same as saying it doesn't help auto transmissions at all, I think this is the source of confusion many times, and it happens alot. My dbb t66 never complains to me about my bov :)

just my 2cents, but trust me I know nothing :)
 
I agree.....except for one little thing.

My original turbo made it 153,000 miles(and the mojority of stock turbo cars have)....or until I tried to overspin it. I think almost 20 years is a good track record for no boost relief don't you?

NOW, if I went out and spent $1500.00 on a DBB turbo....this could lend a different view.

Until someone says "precision said my turbo let go because I don't use a blow off valve. The whole thing could have been avoided." I will wait to make the purchase.

Again, a matter of preference.
 
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Don't you just get a "S" cover turbo if you want that so called extra pressure released..?:confused: I asked about a BOV and everyone I asked said it's kind of pointless.
 
Until someone says "precision said my turbo let go because I don't use a blow off valve. The whole thing could have been avoided." I will wait to make the purchase.

Again, a matter of preference.

your setting yourself up then because no company will ever say that on record(in writing) and get away with it. i wouldn't wait to be told this simple truth to believe it, I thought everyone agrees on less stress = longer life, it even applies to many other subjects/parts. The point of the matter isn't how long your original or my dbb lasts, there are a few more variables I would include for that equation other then having a bov or no bov. cheers Tripple Pale Ale going down the tubes and it feels great! Love how people post pictures instead of words to speak now that is funny.
Don't you just get a "S" cover turbo if you want that so called extra pressure released..?:confused: I asked about a BOV and everyone I asked said it's kind of pointless.

ask the pictures, their so helpful lol

I probably would be like carlo and not even bother if it were stock and low hp. but with that big a$$ HPS 74 and your set up, you bet your a$$ I would.
 
your setting yourself up then because no company will ever say that on record(in writing) and get away with it.

John Craig from Limit Engineering said they were not needed back in the early 90s for the 44/60s .. BUT do whatever you want.. it's YOUR car :p Oh I have logged a lot of miles on all sorts of turbo's .. don't have a BOV:eek:
 
John Craig from Limit Engineering said they were not needed back in the early 90s for the 44/60s .. BUT do whatever you want.. it's YOUR car :p Oh I have logged a lot of miles on all sorts of turbo's .. don't have a BOV:eek:

I am not saying buy one or don't buy one, here again that isn't the point imho.

stress relief = longer life for car parts, that is the point I try to make FIRST. Then if you agree with that, the decision is already made for you! If you don't mind the extra stress on your turbo dont get one, its simple. There are more turbo failing variables then having a BOV or not having one. And I am 100% sure stress is a factor in parts failure, how much of a factor? who knows, that isn't important to me at this time. Eliminating any stress I possibly can on my dbb baby is what is important to me. do what you want, it IS your car, Grumpy is right about that. but torturing your turbos grumpy that is just wrong, just kidding lol. I know engine builders that use them and engine builders that dont, I can fight both sides of the argument easily. In the end for me its not worth debating on because there is nothing to debate when it comes to simple truths, stress relief = longer life so I got one.
 
I love how this very topic - every 2000 times it has come up - always ends the same way.

And I Agree.....


It's your car, do as you wish.


As far as posting pics instead of words..........It's how some of us deal with REPETITION.
 

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:D LoL... "Why don't u take a seat, what are u doing here"?????:biggrin: LMOA
 
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