What's the difference - Turbos
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Joined: Jul 2004
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From: Myrtle Beach, SC
They Prevent Compressor surge which happens when the air backs up in the intake. Some companies offer these anti surge ports on there compressor covers to help alievate some of the back pressure that is produced when the turbo is still spinning even when you let off the throttle. This air hits the throttle body which is usally closed when you let of the throttle and comes back to the compressor.
Most of the time the bov takes care of this problem but on larger size turbos the bov dosen't get a chance to fully dispell the returning pressure, which can hit the compressor wheel and cause wear and tear on the wheel, shaft and bearings a lot faster.
Basically the ports on the turbos housing gives the surging air another route to exit, which will make it last longer.
I am using anti surge ports on my Precision PT6776RH
Most of the time the bov takes care of this problem but on larger size turbos the bov dosen't get a chance to fully dispell the returning pressure, which can hit the compressor wheel and cause wear and tear on the wheel, shaft and bearings a lot faster.
Basically the ports on the turbos housing gives the surging air another route to exit, which will make it last longer.
I am using anti surge ports on my Precision PT6776RH
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From: Newcastle-Upon-Tyne
Originally Posted by busterpit23,Mar 15 2008, 12:30 AM
They Prevent Compressor surge which happens when the air backs up in the intake. Some companies offer these anti surge ports on there compressor covers to help alievate some of the back pressure that is produced when the turbo is still spinning even when you let off the throttle. This air hits the throttle body which is usally closed when you let of the throttle and comes back to the compressor.
Most of the time the bov takes care of this problem but on larger size turbos the bov dosen't get a chance to fully dispell the returning pressure, which can hit the compressor wheel and cause wear and tear on the wheel, shaft and bearings a lot faster.
Basically the ports on the turbos housing gives the surging air another route to exit, which will make it last longer.
I am using anti surge ports on my Precision PT6776RH
Most of the time the bov takes care of this problem but on larger size turbos the bov dosen't get a chance to fully dispell the returning pressure, which can hit the compressor wheel and cause wear and tear on the wheel, shaft and bearings a lot faster.
Basically the ports on the turbos housing gives the surging air another route to exit, which will make it last longer.
I am using anti surge ports on my Precision PT6776RH
Thanks! That was well explained! 
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From: Myrtle Beach, SC
Originally Posted by Tyraid2K,Mar 15 2008, 10:33 AM
I think I need this, any garret gt30r units with this feature?
This might be what your looking for
http://cheapturbo.stores.yahoo.net/garrettgt3076r.html
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Precision SC61 just came out with one also.
http://cgi.ebay.com/ebaymotors/Precision-S...sspagenameZWD1V
http://cgi.ebay.com/ebaymotors/Precision-S...sspagenameZWD1V
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