OK where to start?
Im using a M90 of an earlier (oval port) TB on a custom air to air aftercooled High compretion 3L Mitsubishi V6 stuck in a Dodge Stratus.
It was pretty good till recently, Ive always had a good amount of blower rattle, even after I put new bearings and new coupler it still has a rattle at idle. It has been slowly (very slowly) getting worse.
Ive been slowly adding more and more boost, im at 12psi now (10.5-1 compretion) and as soon as i get it over 5000RPM i start to loose about 3psi of boost to my 6800shift point. Realy sux as my engine makes most of its usable HP up there and it kind of lays over not to bad but anoying enough.
Now I know the latter models of the blowers have coated rottors, has anyone had the earlier ones coated to close the air space (cooler air and less boost loss at high RPM)? Also are there other differences besides inlet opening changing to rectangular on the later year blowers? and i guess last of all are there any direct swaps to newer or larger eatons?
One last thing, Is there anyway of slowing the bypass actualtor from opening, I get to 11% throttle and i start making boost, are there any actuators that have a different spring pressure to stop it from starting to shut the bypass at 4-5In-hq?
Im using a M90 of an earlier (oval port) TB on a custom air to air aftercooled High compretion 3L Mitsubishi V6 stuck in a Dodge Stratus.
It was pretty good till recently, Ive always had a good amount of blower rattle, even after I put new bearings and new coupler it still has a rattle at idle. It has been slowly (very slowly) getting worse.
Ive been slowly adding more and more boost, im at 12psi now (10.5-1 compretion) and as soon as i get it over 5000RPM i start to loose about 3psi of boost to my 6800shift point. Realy sux as my engine makes most of its usable HP up there and it kind of lays over not to bad but anoying enough.
Now I know the latter models of the blowers have coated rottors, has anyone had the earlier ones coated to close the air space (cooler air and less boost loss at high RPM)? Also are there other differences besides inlet opening changing to rectangular on the later year blowers? and i guess last of all are there any direct swaps to newer or larger eatons?
One last thing, Is there anyway of slowing the bypass actualtor from opening, I get to 11% throttle and i start making boost, are there any actuators that have a different spring pressure to stop it from starting to shut the bypass at 4-5In-hq?