okay, for some reason when we finished installing the begi s 3 on my friend's miata. some things weren't quite right. when we open the wastegate it gets stuck on the down pipe as much as we move it. its still getting stuck. the other is that the wastegate isnt' opening. we took the car to a local smog shop to get it smoke test . no leaks. what can be the issue? i'm pretty sure everything is hook up right. i have a begi miata myself and everything is hook up the same way.

link below.

http://www.youtube.com/watch?v=OE_u3VIsL_Q

 

Wait!!! Its Not Making Boost In Neutral???

 

no, we have it in first gear...took the car out on the street. did everything we can possibly think of.

 

K just making sure lol. So did you try adjusting the wastegate? Or you are sure its getting stuck on the DP?


PS: Sound was muted and was watching full screen. =D

 

it gets stuck when we push the wastegate open. but its not stuck in the video. if you can't hear the sound. goto youtbe and just type in ( begi no boost. )

 

i adjusted the wastegate ..it doesn't do anything.

 

The video just really sucks, I can't tell what kind of DP you have.

I can't tell what you mean it is stuck when you push it open, but not in the video?

The new link you posted works now.

 

If it doesn't open when you push it open, why don't you think that begi screwed up another downpipe and it is being blocked by it?

 

The fitment of the flapper valve inside the DP is very tight. You need to loosen all the nuts holding the DP to the turbine housing... there will be some play, just wiggle the DP around until the flapper door moves freely and then tighten the nuts.

FYI, revving the engine on a small T25 will produce a few psi if you stomp it and rev it all the way up. It'll probably make 2psi but won't be enough to move the wastegate arm, so what you attempted in the video is useless.

If all your clamps are tight on the charge-pipe, you should be able to disconnect the wastegate arm, go for a drive, and still make 2-3psi at WOT in 3rd/4th... might not get any boost in the low gears cause of the limited load on the engine... so try that.

Next experiment is to connect the arm but remove the vaccum line to the can. Go for a drive... just give it about 1/2 throttle in 3nd, lift by 4k rpm... should make boost if there are no leaks.

Some good pics of everything might help us spot an obvious problem... make sure you get various angles of the turbo side, all the charge piping, and the regulator.

 

the wg flapper should move freely with everything bolted up. You're gay.

 

Say what? I've got mine tightened down so much that I cannot push it open by hand. I have to put a wrench on the ****** to even stand a chance.

 

jealous?????





ROFL.

and fwiw at :48 i can see the actuator rod pop off the wastegate.


which probably means.


with some load....



you might make some boost....


after putting the rod back on, of course

 

maybe you should hit the gym or ask me to do it...or unhook the rod.

 

That's how mine is too, but it's not on the car yet so I've got no idea whether it's adjusted or functions properly or not.

 

you're barely putting any load on it. it won't make boost.

 

another reason why superchargers are superior to tubos. They make boost in neutral.

 

yep, turbos cant do that at all.

 

Scott, only 5psi? ***** ****. My car makes 9psi on the limiter in neutral

 

that's holing 3.5K with fuel cut only, 10* ignition timing. I'm sure I could make +15psi with spark cut

 

oh... heheh. I was talking about with the rod on. with it off it flops around like a limp dick.