Wastegate Question

[IvanS13]

What are the advantages, if any, is it to have a larger mm external wastegate(i.e. 35, 38, 40, 60, ect).

Do larger ones just handle more boost better?What exactly is the 'mm spec' refering to? The opening? Spring?

Thanks.

[BLue n white R1]

mm should be the opening and exit, the larger the wastegate the better it can handle high boost with out boost creep,

[Nismo_Freak]

I'll just cut to the chase and say go with the 40mm. Too large of a wastegate can cause issues as well... this has to do with boost response and maintaining exhaust flow velocity to create scavenging.

[Onizuka]

the stock TB for the SR is like 50 or 60mm anyways im pretty sure so there really isnt any point in going larger in my opinion.

[SWIFT_DRIFT]

The wastegate and TB (throttle body) are not related in any way shape or form J-spec :P

[Nismo_Freak]

60mm TB

[Movingviolation240]

35 or 40mm wastegate is all you'll need on a motor that size.

Paul

[Movingviolation240]

35 or 40mm wastegate is all you'll need on a motor that size.

Paul

[IvanS13]

Thanks for the info... I wasnt all too sure. I am prolly gonna go with a 40mm.