94touring

Well engine coolant temps aren't effected by turbo's really. As long as your coolant system is 100% its gona run the same either way. It does make the engine 'bay' temps lower, and perhaps the intake temp charges lower a little bit as a result.

mr.zoom

Just by looking, it seems that it will be choking the motor and collects the heat where the manifold and the turbine meets



any of the wastegates failed fron excessive heat?

j9fd3s

yes, its recommended you either have the apex wg sent out of a valve job, or get an hks or tial

mr.zoom

valve job?



replace the diaprahm or bore it out???



Which HKS 50mm racing??

Again thanks

apexkw

the older apexi wg used a brass fiting inside the wg. they replaced it with a stainless one. i have an rx6a and its a great little turbo for the street. here is a link to where i had a recent dyno run. https://www.nopistons.com/forums/ind...howtopic=40259

mr.zoom

how much boost where you running??



also does the RX6B come with the stainless steel bushing??

thanks

apexkw

14 psi on a stock port motor. i dont know if the rx6b does or not. i would assume apexi has changedd all their wg's to the new piece. i mean come on it wouldnt be good for their rep if they sold parts that blow up motors. i would call and ask apexi to see if they have fixed it though.

94touring

I never had any problems with the wategate on mine. I only ever heard of a few cases that it was an issue.

mr.zoom

Called the mand ask



part numbers with 710 are the older ones (RX6A) and the 720 are the RX6B



he said the RX6B have the SS bushings, although I don't have any confidence in the way he answered that question ...



Does this turbo looses its effeciency after 15psi???

94touring

Looses affeciency after 18psi, from what I could tell.