RayJay Turbo

[Captain KRM P5]

Any of your rotary nuts hear of a RayJay blow through turbo system for first gen rx7s? Any thoughts on them?

 

[Super Matty P]

i have no rotary experience but I did have one of the highest hp blow through carbbed mustangs (2.3L).

It's not easy at all to tune or get to run smoothly. If you run more than just a little boost you won't be able to vent the boost without damage to the carb and specifically the power valve. I went through 4 Holley carbs all specifically built for blow through and draw through applications. I was only running 9.5psi before it started popping power valves. This may be more of a draw through problem but I don't see how as the throttle plate is at the bottom of the carb just as it is on a drawthrough. The boost backing up through the carb, just those 3" or so, is what kills it.

Just my $0.02 but what do I know about forced induction?!?!?

 

[Captain KRM P5]

Just my $0.02 but what do I know about forced induction?!?!?

(kiss)

 

[Super Matty P]

hope that info helps....it's been my experience that blow through and draw through carbbed turbo's are too difficult to work with and produce much less power than a simple EFI turbo. (hence my 2.5L pinto "big-boy" swap....302whp)

 

[Captain KRM P5]

i was just curious - i had a hard time wrapping my mind around this type of setup actually working and have seen a few on ebay while i search for a new way to power my rx7

 

[Super Matty P]

womp did you say?? Why not do a neat all motor build with some new lightweight rotors from the Rx8....or do one of those "cube-upgrades to a 1.5L" That should give you the grunt down low and the lightweight will help out up top.