70c10

iTrader: (1)

hey guys Im in the market for a wastegate. I have a masterpower T70 .96 on a ls1 with a turbo cam. down the road I might upgrade to a tc76. I was looking at getting a jgs 40mm gate, piston type. Will the 40 be big enough now and down the road if and when I ever upgraded the turbo.

Bobsmyuncle

iTrader: (32)

yes, it should be big enough, post a pic of how it is setup

TiAL

how much boost do you plan to run.

98Z28CobraKiller

iTrader: (17)

Buy the 50mm

RealQuick

iTrader: (14)

This...

70c10

iTrader: (1)

Between 7 and 9 lbs its a stock bottom end

98TA6.0

iTrader: (42)

never a bad thing to go bigger like a 50mm but if you can properly position a 38 then that will be a cheaper alternative and work well for that boost level.

'Trust'

iTrader: (24)

You can never have too much wastegate.

TiAL

sure you can, especially if you have high backpressure

TiAL

minimum 44mm, i'd go with a 60 personally

98TA6.0

iTrader: (42)

i went down that road. i put CO2 pressure on top of the gate to keep it shut. 43 lbs on a 4G63 with a JGS 50mm gate.

XtremeDime

iTrader: (16)

I was running a tial 38mm w/8 psi last year. No issues.

spaz1

iTrader: (9)

I'm running a tial 38 and never had an issue.

ninety4three4

iTrader: (13)

It also depends on placement in the merge pipe as well. Its not all about size (no pun intended). You could have optimal placement and get away with a 38 or you could have really crappy placement and need a 44-60 just to squeak by. All depends on your plans for the kit. If you are going with a bigger charger down the road you're best off going big now and spending a little extra money to make sure you have what you need and only spend the money once. Just my input...

Bobsmyuncle

iTrader: (32)

this is why i asked how it was setup. u could have a 100mm wastegate, but if its setup wring, it wont work

red90cobra

iTrader: (36)

so whats the proper placement for a wastegate?

Marcello7x

iTrader: (10)

What he said! Im in the same boat, going to run a mpt70 and planned on a 38-40mm.

HydroStream6

iTrader: (16)

I think you guys are actually agreeing??

I'd run larger as well. For the extra ~$100 it's good to know you'll be safe. Even a 44 or 46 can be had around $300.

TiAL

needs to be put in the direct flowpath of the exhaust gas pulling from all cyl, no 90* angles

HydroStream6

iTrader: (16)

While this is the ideal placement, if the build layout does not permit this, they usually work effectively at a 90* angle as well.