why the atmospheric BOV all the time?
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+Tien sus
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why the atmospheric BOV all the time?
I have a friend thats building a TT engine for an 1985 vehicle and one of the unique thing that he did (besides restore this rare vehicle) is have a bov that dumps into the exhaust, muffling the sound and making it more of the sleeper (more for a nissan w/ the SR swap than say a WRX) Can anyone tell me the difference between the two?
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Mr. Game and Watch Drift
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I think its his external wastegate that dumps into his exhaust. There is no way his BOV dumps to the exhaust, that would mean his piping for his BOV/intercooler is connected to the exhaust, which means all the pipes for the intercooler would get REALLY hot. Therefore his car would be slow as balls.
You have mistaken the external wastegate for the bov. The external wastegate is a lot like a bov, but it is for the exahsut side and not on the intake side of things. True if you have a external wg dumped into the atmosphere it is REALLY loud.
You have mistaken the external wastegate for the bov. The external wastegate is a lot like a bov, but it is for the exahsut side and not on the intake side of things. True if you have a external wg dumped into the atmosphere it is REALLY loud.
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1989 Toyota Supra Twin Turbo -FOR SALE!!
-1JZGTE motor, Greddy profec B, HKS BOV, autometer gauges, 3" Blitz Nur Spec R Exhaust, MkIV Rims, Yokohama A032R tires . FOR SALE!!! PM ME!!
1997 Mitsubishi Eclipse GST
Mods: AGP L2R, victoy performance 2.5" O2 housing with 40mm External wastegate, Denso 660's, IRC Race FMIC, 2.5" intercooler piping, 3" dejontool intake, BBK 255lph fuel pump, Blitz Dual turbo timer, Greddy profec B, Stillen 3" downpipe , 3" Tanabe Racing Medallion exhaust, Greddy type S BOV, Apexi EL EGT, Apexi EL Boost Gauge, translab shift kit, alto end clutch, Eibach pro kit, tokico illumina shocks, HKS 264/272 cams, 1G head swap, RRE SS valves, crower titanium retainers, crower valvesprings, mitsu 3 layer metal headgasket, DSMlink, ARP rod bolts, ARP head studs, Aeromotive AFPR with stainless braided lines and B&M gauge, stainless oil feed line with inline filter, gay vitek plug wires, RRE catch can, thin fans, and much more.
I own H22Prelude and her body
1989 Toyota Supra Twin Turbo -FOR SALE!!
-1JZGTE motor, Greddy profec B, HKS BOV, autometer gauges, 3" Blitz Nur Spec R Exhaust, MkIV Rims, Yokohama A032R tires . FOR SALE!!! PM ME!!
1997 Mitsubishi Eclipse GST
Mods: AGP L2R, victoy performance 2.5" O2 housing with 40mm External wastegate, Denso 660's, IRC Race FMIC, 2.5" intercooler piping, 3" dejontool intake, BBK 255lph fuel pump, Blitz Dual turbo timer, Greddy profec B, Stillen 3" downpipe , 3" Tanabe Racing Medallion exhaust, Greddy type S BOV, Apexi EL EGT, Apexi EL Boost Gauge, translab shift kit, alto end clutch, Eibach pro kit, tokico illumina shocks, HKS 264/272 cams, 1G head swap, RRE SS valves, crower titanium retainers, crower valvesprings, mitsu 3 layer metal headgasket, DSMlink, ARP rod bolts, ARP head studs, Aeromotive AFPR with stainless braided lines and B&M gauge, stainless oil feed line with inline filter, gay vitek plug wires, RRE catch can, thin fans, and much more.
THE HAMMER
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BOV's like the TurboXS type H - REC (or something like that) can be recirculated back into the intake before the turbo..... this is for MAF style vehicles so they dont go rich during the release..... It just makes it more of a "bypass valve" instead of a "blow off" valve...
My buddies mr2 has it, its nice for daily driving so ya dont have noise all the time
My buddies mr2 has it, its nice for daily driving so ya dont have noise all the time
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That would be his wastegate, not his BOV... if its his BOV then hes retarded 
I prefer bypass valves over blowoff valves.... thats just a personal opinion though. A blow off valve does nothing for performance... I don't call running rich between shifts a performance upgrade
I prefer bypass valves over blowoff valves.... thats just a personal opinion though. A blow off valve does nothing for performance... I don't call running rich between shifts a performance upgrade
THE HAMMER
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Originally posted by SupraKid
A blow off valve does nothing for performance...
A blow off valve does nothing for performance...
The way you should have worded it is.... There is no performance benefit of a Blow off valve over a bypass valve.. because they both work to keep the turbine spinning rightwise between shifts and during peroids where the throttle is stabbed constantly, aka in a corner trying to balance the car, drifting, so on..
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BOV = no compression surge or very little
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I own H22Prelude and her body
1989 Toyota Supra Twin Turbo -FOR SALE!!
-1JZGTE motor, Greddy profec B, HKS BOV, autometer gauges, 3" Blitz Nur Spec R Exhaust, MkIV Rims, Yokohama A032R tires . FOR SALE!!! PM ME!!
1997 Mitsubishi Eclipse GST
Mods: AGP L2R, victoy performance 2.5" O2 housing with 40mm External wastegate, Denso 660's, IRC Race FMIC, 2.5" intercooler piping, 3" dejontool intake, BBK 255lph fuel pump, Blitz Dual turbo timer, Greddy profec B, Stillen 3" downpipe , 3" Tanabe Racing Medallion exhaust, Greddy type S BOV, Apexi EL EGT, Apexi EL Boost Gauge, translab shift kit, alto end clutch, Eibach pro kit, tokico illumina shocks, HKS 264/272 cams, 1G head swap, RRE SS valves, crower titanium retainers, crower valvesprings, mitsu 3 layer metal headgasket, DSMlink, ARP rod bolts, ARP head studs, Aeromotive AFPR with stainless braided lines and B&M gauge, stainless oil feed line with inline filter, gay vitek plug wires, RRE catch can, thin fans, and much more.
I own H22Prelude and her body
1989 Toyota Supra Twin Turbo -FOR SALE!!
-1JZGTE motor, Greddy profec B, HKS BOV, autometer gauges, 3" Blitz Nur Spec R Exhaust, MkIV Rims, Yokohama A032R tires . FOR SALE!!! PM ME!!
1997 Mitsubishi Eclipse GST
Mods: AGP L2R, victoy performance 2.5" O2 housing with 40mm External wastegate, Denso 660's, IRC Race FMIC, 2.5" intercooler piping, 3" dejontool intake, BBK 255lph fuel pump, Blitz Dual turbo timer, Greddy profec B, Stillen 3" downpipe , 3" Tanabe Racing Medallion exhaust, Greddy type S BOV, Apexi EL EGT, Apexi EL Boost Gauge, translab shift kit, alto end clutch, Eibach pro kit, tokico illumina shocks, HKS 264/272 cams, 1G head swap, RRE SS valves, crower titanium retainers, crower valvesprings, mitsu 3 layer metal headgasket, DSMlink, ARP rod bolts, ARP head studs, Aeromotive AFPR with stainless braided lines and B&M gauge, stainless oil feed line with inline filter, gay vitek plug wires, RRE catch can, thin fans, and much more.
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Originally posted by 89TwinTurboSupra
True if you have a external wg dumped into the atmosphere it is REALLY loud.
True if you have a external wg dumped into the atmosphere it is REALLY loud.
Yes it is.
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Click for MerF's VIDEOS thread.
First ET: 8.270 @ 89.08 MPH (1/8 mile)
VIRGINIA BEACH REPRESENT!
Originally posted by 92CXhatch
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you are #1 newbie man!!!
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Originally posted by Slash
of course it does.. you retain the velocity of the turbine in the right direction, rather than the air coming back and slamming it back the other way....
The way you should have worded it is.... There is no performance benefit of a Blow off valve over a bypass valve.. because they both work to keep the turbine spinning rightwise between shifts and during peroids where the throttle is stabbed constantly, aka in a corner trying to balance the car, drifting, so on..
of course it does.. you retain the velocity of the turbine in the right direction, rather than the air coming back and slamming it back the other way....
The way you should have worded it is.... There is no performance benefit of a Blow off valve over a bypass valve.. because they both work to keep the turbine spinning rightwise between shifts and during peroids where the throttle is stabbed constantly, aka in a corner trying to balance the car, drifting, so on..
