Toyspeed.org.nz Message Board

by **gasman** » Mon Nov 14, 2005 7:39 pm

i got a gtz ae92 and put on a 175mm crank pulley and when i got the belt to stop slipping noticed that the car whines when ya boost it. its not a loud whine just a faint one. is this normal?

by **Crucible** » Mon Nov 14, 2005 8:17 pm

gasman wrote:i got a gtz ae92 and put on a 175mm crank pulley and when i got the belt to stop slipping noticed that the car whines when ya boost it. its not a loud whine just a faint one. is this normal?

Yep thats all normal!, SC12 - SC14 blowers are rootes type superchargers. They tend to pulse the air when compressing which makes the whining noise and this is alot more noticeable when they are overdriven. Some Rootes blowers overcame this by sort of screwing the rotors into each other, therefore creating smoother pulsations. The GM 6-71, 8-71 blowers off the old Jimmy's are a good example of this. :lol:

TNT

by **Alex B** » Mon Nov 14, 2005 8:26 pm

thats your gf telling you to slow down :lol:

by **sk1dlet** » Mon Nov 14, 2005 8:47 pm

pyro_sniper2002 wrote:thats your gf telling you to slow down

hahaha classic

by **gasman** » Mon Nov 14, 2005 9:27 pm

True-No-Turbo wrote:
gasman wrote:i got a gtz ae92 and put on a 175mm crank pulley and when i got the belt to stop slipping noticed that the car whines when ya boost it. its not a loud whine just a faint one. is this normal?

Yep thats all normal

phew coz i thought that my sc might of been on its way out and was stressing because of it.

cheers for the info

by **Crucible** » Mon Nov 14, 2005 11:27 pm

gasman wrote:
True-No-Turbo wrote:
gasman wrote:i got a gtz ae92 and put on a 175mm crank pulley and when i got the belt to stop slipping noticed that the car whines when ya boost it. its not a loud whine just a faint one. is this normal?

Yep thats all normal

phew coz i thought that my sc might of been on its way out and was stressing because of it.

cheers for the info

Just as a matter of interest, what sort of boost are you seeing as I have an AE101 with a 175mm Pulley and Im getting 13psi (Hot Factory Cooler boost that is ) :cry:

Wear and tear will make a differance, but it would be interesting to compare the two as AE92 and AE101 gtzs have differant diameter S/C Pulleys.

Are you still running the factory cooler?

by **gasman** » Tue Nov 15, 2005 5:28 pm

i still got the factory cooler and get 14 when im in 5th gear and punt it. other wise it hangs around 13-13.6 psi

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