Turbo Shuffle
Hugh
hugh at sol.co.uk
Sun Jul 29 21:39:22 GMT 2001
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I have recently purchased an R34 Nissan Skyline fitted with 2 x HKS GT =
2530 turbo's and HKS step 1 cams 256=B0 x 8.65mm inlet by 264=B0 x =
8.74mm exhaust.
On light throttle and particularly when at a steady speed the turbos =
start puffing against each other. This is also accompanied by a slight =
flicker on the boost gauge. I have the feeling that one or both of the =
turbo's are stalling in turn against the pressure from it's partner.
A quick lift off the throttle is enough to stop the problem for a short =
time, but it just doesn't feel right.=20
It has been suggested that the HKS balance pipe tubular exhaust manifold =
will help this by evening up the exhaust pressure to both turbo's.
I also wonder if there may be an efficiency / volumetric balance problem =
that might be helped by gas flowing and matching the volume of the turbo =
outlets.=20
Any hints / previous experience on how to deal with this problem will be =
gratefully received.
Hugh
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<DIV><FONT face=3DVerdana size=3D2>I have recently purchased an R34 =
Nissan Skyline=20
fitted with 2 x HKS GT 2530 turbo's and HKS step 1 cams 256=B0 x 8.65mm =
inlet by=20
264=B0 x 8.74mm exhaust.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>On light throttle and particularly =
when at a=20
steady speed the turbos start puffing against each other. This =
is also=20
accompanied by a slight flicker on the boost gauge. I have the =
feeling that=20
one or both of the turbo's are stalling in turn against the =
pressure from=20
it's partner.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>A quick lift off the =
throttle is enough=20
to stop the problem for a short time, but it just doesn't feel right.=20
</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT><FONT face=3DVerdana=20
size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>It has been suggested that the HKS =
balance pipe=20
tubular exhaust manifold will help this by evening up the exhaust =
pressure to=20
both turbo's.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>I also wonder if there may be an =
efficiency /=20
volumetric balance problem that might be helped by gas flowing and =
matching=20
the volume of the turbo outlets. </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT><FONT face=3DVerdana=20
size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>Any hints / previous experience on =
how to deal=20
with this problem will be gratefully received.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>Hugh</FONT></DIV></BODY></HTML>
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