Wastegate problems ?
 

I'm running the 39mm Precision gate. When I had the mp70 the 9lb spring gave me 13lb no creep worked like a charm and ran damn good. Sold the 70 to Jay and put the new on3 78/75 and a snow meth kit. With this turbo the 9lb spring gave me 20 psi thank god for meth LOL!! So I put in the 1lb spring and it gives me 15psi and spools slow as shit, 5 pound spring gives me 15psi and spools better. Is the gate just too small for this turbine?The gate is on the log below the turbine,not at the optimal angle.

first thing first how are you running the hoses on the gate??

Single line to bottom port on gate/top open. Seems that springs determine how fast the gate opens and when it's open it will only flow enough to keep me around 17-18 psi. I guess I will just run it on kill all the time...runs damn good on 20psi spun about 15 feet in 4hi on street tires lol!!!

Make sure the plug didn't fall out on bottom side.

We have used a 39 gate on many builds.


You can add another gate. Or swap the gate to a 46mm.

Yes, it sound like gate time. Rick your turn...

What cam or other mods?

212/220 blower cam with supporting mods.Gate is in the same spot as your first run of production cast stainless manifolds Rick. I really like 4wd launches and 20psi but I'm afraid she wont last to long at that level. I may add a gate to the crossover because it would be a pain in the ass to go bigger at the manifold.

Do you have a pic if how the gate is set up?

Dem 4wd launches doe

Yep! its cool to lay a nice set of 11's on the road but double 11's even cooler.