Do you need the gasket from the manifold to turbo? or the turbo to dp?
10-05-2007, 08:03 PM
#6
3.0 BAR
Join Date: Jun 2006
Posts: 3,256
Re: Do you need the gasket from the manifold to turbo? or the turbo to dp?
We dont use gaskets and jago just told you if the surfaces are flat you dont need one. It actually helps the flow a little better somehow. The reason behind gaskets is a heat precaution. For instance, if your car is hot as hell then the head gasket will burn and save your engine from overheating. You dont have to run ANY gaskets, period!! You just have to put your fan on a manual switch though.. Chevron 91 with techron is almost like racegas, use it.
10-06-2007, 09:42 AM
#7
1.5 BAR
Join Date: Oct 2004
Posts: 877
Re: Do you need the gasket from the manifold to turbo? or the turbo to dp?
Between turbo and manifold, I would always use a gasket.
All the used turbos I see have a warped turbine inlet flange which is normal considering the thermo cycles this cast iron part sees in operation. On this pressurized portion of the exhaust system, the smallest gap between the flanges will cause an exhaust leak and once it started leaking, it will get worse, the exhaust stream gouging into the flange rapidly with major impacts on spool up and power. I would definitely recommend a good gasket there at all times!! For the downpipe, different story, exhaust gases are no longer pressurized. A slight crack won't tend to leak as bad and mostly, won't impede spool up and power as much, that's probably why a downpipe gasket is rarely used on factory turbos.
All the used turbos I see have a warped turbine inlet flange which is normal considering the thermo cycles this cast iron part sees in operation. On this pressurized portion of the exhaust system, the smallest gap between the flanges will cause an exhaust leak and once it started leaking, it will get worse, the exhaust stream gouging into the flange rapidly with major impacts on spool up and power. I would definitely recommend a good gasket there at all times!! For the downpipe, different story, exhaust gases are no longer pressurized. A slight crack won't tend to leak as bad and mostly, won't impede spool up and power as much, that's probably why a downpipe gasket is rarely used on factory turbos.
10-06-2007, 11:14 PM
#10
3.0 BAR
Join Date: Oct 2004
Posts: 1,811
Re: Do you need the gasket from the manifold to turbo? or the turbo to dp?
Originally Posted by BLAAST
Between turbo and manifold, I would always use a gasket.
All the used turbos I see have a warped turbine inlet flange which is normal considering the thermo cycles this cast iron part sees in operation. On this pressurized portion of the exhaust system, the smallest gap between the flanges will cause an exhaust leak and once it started leaking, it will get worse, the exhaust stream gouging into the flange rapidly with major impacts on spool up and power. I would definitely recommend a good gasket there at all times!! For the downpipe, different story, exhaust gases are no longer pressurized. A slight crack won't tend to leak as bad and mostly, won't impede spool up and power as much, that's probably why a downpipe gasket is rarely used on factory turbos.
All the used turbos I see have a warped turbine inlet flange which is normal considering the thermo cycles this cast iron part sees in operation. On this pressurized portion of the exhaust system, the smallest gap between the flanges will cause an exhaust leak and once it started leaking, it will get worse, the exhaust stream gouging into the flange rapidly with major impacts on spool up and power. I would definitely recommend a good gasket there at all times!! For the downpipe, different story, exhaust gases are no longer pressurized. A slight crack won't tend to leak as bad and mostly, won't impede spool up and power as much, that's probably why a downpipe gasket is rarely used on factory turbos.
