teachermechanic

iTrader: (4)

Hi, i check my Tial wastegate and i don't understand this.
The wastegate size is 38mm but the in and out hole is about 35mm.
This is normal or this wastegate is not 38mm but 35mm?

NewbernD

iTrader: (1)

My tial 46mm has a flange that's only 40mm. The valve is 46mm though. Always felt like that was kind of silly.

RETed

It's how the poppet valve operates.
Yeah, you're right - it is sort of a con.
This is why the Turbosmart(?) brand of wastegates started to advertise their orifice size versus the valve size.  Their 45mm wastegate functions more like a 50mm wastegate by other manufacturers.
http://www.turbosmart.com.au/wastegates.htm


-Ted

teachermechanic

iTrader: (4)

Thanks all.....

rx7_turbo2

The Tial 35 and 38mm gates look much different, you can tell what you have by just looking at it. I assure you the valve I sold you is 38mm NOT 35mm.

teachermechanic

iTrader: (4)

Hi RX7 TURBO2.
Thanks for this 38mm wastegate, i just check why the 38mm wastegate have not 38mm hole, and if is same with all brand (not for blast you)
Because last year i run with Audi wastegate 31mm hole
and is too small.
I thing i put (pop off valve) this year with this wastegate.
Or i put 2 38mm wastegate.

rx7_turbo2

Cool. As was mentioned different manufactures measure things, differently.