Blow off valve ratings for my set up?
#1
Blow off valve ratings for my set up?
With all the wastegate frezzing issues I've been having I need to go to a blow off valve soon.
How do you know your blow off is sized correctly for your set up with room for modding or expansion of your current set up?
Any help would be great.
Thanks!
How do you know your blow off is sized correctly for your set up with room for modding or expansion of your current set up?
Any help would be great.
Thanks!
Last edited by TG02Z71; 12-20-2005 at 08:13 PM.
#4
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A blow offf will still not halp your gate issues. As I am sure you knwo it just bleeds boost off in the plumming when the throttle blade is closed and there is manifold vacume. Usually the size of the valve can tell you about what kind of hp the valve is good for. A 38mm is good for around 500 on most units and you can go as big or bigger then 48 witch is good for around 1000 without too much of a sweet.
#6
Originally Posted by hellbents10
A blow offf will still not halp your gate issues. As I am sure you knwo it just bleeds boost off in the plumming when the throttle blade is closed and there is manifold vacume. Usually the size of the valve can tell you about what kind of hp the valve is good for. A 38mm is good for around 500 on most units and you can go as big or bigger then 48 witch is good for around 1000 without too much of a sweet.
Maybe a trip over to LS1TECH is in order.
#7
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i have a turbonetics godzilla bov on my setup.. everyone i talked to on the ls1 forums said get either that one or a tial.. hope this helps.
www.slowboyracing.com has them at a resonable price also check ebay..
www.slowboyracing.com has them at a resonable price also check ebay..
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#8
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Originally Posted by TG02Z71
Thanks for the size to HP rule of thumb, it does help.
Maybe a trip over to LS1TECH is in order.
Maybe a trip over to LS1TECH is in order.
it would be best for you to figure out the over boost problem and fix it.
#9
Originally Posted by parish8
there is no need for a trip anywhere. what hellbents10 told you is the way it works. a bov will not help you with any kind of over boost situation. they are not set up to blow off at a preset psi. they blow off when you let off the gas and there is a vacume in the intake manifold.
it would be best for you to figure out the over boost problem and fix it.
it would be best for you to figure out the over boost problem and fix it.
I got an answer from them last night about getting the new pipes that don't have the wastegate positioned under the turbo exhaust outlet letting condensation run down into the wastegate and freeze. They are replacing my pipes because of a bad ceramic plating job, but thats another story.
At least I will be getting the pipe updates.
Thanks for the clarification on the function of a BOV. I knew it would bleed off the excess pressure when you shut the throttle under boost but was not aware that it would not bleed off psi above a set pressure.
I did go luking on LS1TECH and did some searches and found allot of good info there.
There are just more f-bodies running turbos and they have been at it longer in most cases so there is a bigger data-base of info when you do a search. Looks like the TiAL bov STS offers would work fine for my set up, but maybe I could get it cheaper somewhere else.
Parish, I was going to pm you on this but I figured I'd do some more searches before buggin ya.
Thanks.
#10
Originally Posted by iwineng03ss
i have a turbonetics godzilla bov on my setup.. everyone i talked to on the ls1 forums said get either that one or a tial.. hope this helps.
www.slowboyracing.com has them at a resonable price also check ebay..
www.slowboyracing.com has them at a resonable price also check ebay..
Thanks for the link, their TiAL is $80.00 cheaper than the same one on STS's site.
Last edited by TG02Z71; 12-21-2005 at 01:16 PM.