we run ALL of our turbos off of the head- and dont typically have failures AT ALL on cars we build/install

as soon as you enter another "engine builder" "shop" etc into the equation things can cause issues-

For instance with AMS- they use TONS of our turbos- and have had 1 failure sent back- because they do proper installs also-

just food for thought

cb

 

Sorry, for appearing argumentative 94. I thought that the OP only did Time Attack. My bad. I did not know he also did Auto-X.

 

In general terms, is oil supply to the center section less of an issue with BB turbos than with a JB turbo? Since BB turbos employ an oil restrictor is oiling sourced from the cylinder head sufficient for BB turbos?

 

Just to be clear, when we received the turbo last year in April, there was no shaft play. When they installed it, still no shaft play. Fast forward 10mo to now, there was shaft play. Just sayin'. It was not messed with or touched since the install. It was DEFINITELY NOT install error. So let's just see what CBRD/Chad finds regarding how this happened.

Obviously, aftermarket parts are for "off road use only" and "not for highway use." So I made sure I followed that rule.


I don't do Auto-X. Not sure who brought that up. 50-60s runs don't excite me.

 

Here is a lap when it was driven to the absolute limit at Willow Springs International Raceway. I rang it out with everything she got, "high boost map" 27.4psi.

Enjoy! FASTEST RTA AWD Modified Class Evo 9 at WSIR Ever. Just 2.3s off the record AWD Class Record.

 

Chad, from your experience what are possible scenarios that would cause shaft play? List all that you can think of.

 

My signature stuff were all from Time Attack/Time Trial Competitions.

 

Here are some videos of my oopsie moments for your viewing pleasure.

 

curbs are bad...mmkay...so don't turn in, on a curb...mmkay...

 

time attack is fancy word for auto cross. auto cross refers to running car around a track with both left, right turns and brakes. a timed event simple as that. the term autocross was around when I was 16. I am 52. when I was 18 I autcrossed my mini at USF parking lot. maybe 45 second track. when I was 20 I autocross my 911 at air force base. like 2.5 minute track. from those experiences I would never autocross my precious evo 1. WAAAY TO HARD ON CARS

if i were selling turbos I wouldnt warranty anything that went on a time attack car. but that is just me.

 

Things break when the car is tracked. CBRD will get you taken care of they always do.

 

Maybe this is all just semantics anyway. I always associated the term auto-x with parking lots and cones. In other words, a short , timed sprint around a flat course with extremely tight radiused turns using 1st, 2nd, & sometimes 3rd gear.

When I think of Time Attack, I think of closed circuit, road courses with relatively long straightaways and sweepers punctuated by a few hairpins and track elevation changes.

Why are we even discussing this though? Sorry for the OT.

 

Nice! I'm running a BBK-3B as well on my TT/TA car but with a built 2.0L and lower boost since I run NASA P/W restricted to 7.8:1. I ran the smaller BBK-Full for years without any issues with excessive backpressure or heating problems. I think the ATP housings are at best a lateral move. If you want to substantially improve on the BBK-3B I think you will need to go to a CBRD LMP kit, or EFR setup.

 

94AWDcoupe is correct on the compressor wheel inducer sizes for the 3B and the Red. I never measured the exducer dimension on the 3B comp wheel though, so I don't know the difference there.

 

Anyone have any data on the ATP GTX3076R on a 2.3L besides honda-guy