Compressor Surge - Grand National
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Uploaded by boost4fun on Feb 17, 2008
Vid of compressor surging on my Grand National
- 15 likes, 0 dislikes
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Uploader Comments (boost4fun)
All Comments (41)
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sounds broken
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so good
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k onda con eso
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@crazy8sx08 It's the stock 200-R4 auto.
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@boost4fun did u keep the car an auto or swap in a 5 speed?
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@Exticy08 Or just give the engine better supporting mods for the turbo, So it can move more air...
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change to a higher psi BOV spring or rase the psi rate if you have an ajustible BOV
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I accidentally deleted your original comment - sorry. An improperly sized turbo coupled with a lack of a BOV was what was causing the problem. The turbo was very efficient and was making a lot more boost than the engine could ingest at lower RPMs. The pressurized air backs up in the intake tract and causes the surge. A BOV fixes it by venting boost when there is a big enough difference in the boost between the intake tract and beyond the throttle body.
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@boost4fun hey thanks for ur reply, so its fair to say a faulty boost controller and or BOV can cause ur car to vent boost wile the throttle is open?
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No, it was too much turbo at part throttle. It was fine at WOT. A Godzilla BOV fixed it.
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What is your egt
copleygsxr 2 years ago
It's a turbonetics T-70 ball bearing turbo. The EGT will creep into the 1700s on a 1/4-mile run, but are typically much lower than that.
boost4fun 2 years ago