absolutely not - I totally agree with that sentiment .

 

I wish we could mount a small webcam under Ngo's car while on a dyno run to see what the wategate is doing.

 

I can do that.
Though, there are other way to do it that are just as effective.
If time permits, I'll do some diagnostic on his car at Steve's.
The easiest and best way is to hook up a gauge and a Mighty-Vac and just look at it first.
If the full-open pressure is correct, then it is the diaphragm sizing ratio.

 

there is not a lot of room down there to fit a big *** diaphragm .....

 

I do it. Its all in the bracket fab.

 

I was able to get under there to snap some pictures of the actuator.







I will try to test the actuator's cracking and fully open pressure right now. I do believe it opens fully at 10 psi but doesn't hurt to check.

 

I am going to bet a dollar that the diaphragm is too small.

That thing is even smaller than the greddy.

 

yeah it does look a lot smaller than my greddy diaphragm

 

That is the problem with piston stuff on a rotary.... we flow over 150% more exhaust for the same power output.

So if you are aiming for 300 WHP, you need like a 500WHP waste-gate.

 

Good news is that the actuator seems to have a good amount of room where it is located

 

hmm... anyone know the diameter of the greddy diaphragm?

 

Better idea would be to ask Jeff what size he has on his.....

 

Big.... mine is 2mm off the frame rail.

 

/\ good point

 

This is actually a case of " bigger is better"

 

lol!

I measured the diameter of the actuator and it is 48 mm (1.9").
I'm going to have gregs check his spare greddy actuator tonight. Will ask Jeff the size he uses too.

For kicks, I tested the actuator. 6-7 psi cracking, ~10 psi fully open.

I'm crossing my fingers!

 

just measured the greddy wastegate and its 1.6"

 

huh...wtf...

 

/\ yeah - I just measured mine as well and ...................










wait ,wrong thread !

 

 

I guess mine is bigger than yours.

looks like I will be testing my wastegate a little more...haha

 

be careful man you prolly shouldn't go over about 8psi at 7500 with that turbo without meth.

 

any more news ?

 

i believe he is going to try to attempt and force the wastegate flapper close and see what the result is

 

not fully closed i hope