88 t2 garrett swing valve size

is it a 2.5" or smaller? Thanks

gtp

Quote:

Originally posted by Chris W 2.25" The 2.5" was used in the '89 TII applications. Chris-TU

Thanks, how much better spool up does a 2.5" swing valve give you over the 2.25?

Quote:

Originally posted by Chris W The gains are primarily in HP and torque. Though, some of our customers have also experienced slightly quicker spool up when moving to the larger swingvalve. Many of them have been able to achieve better gas mileage . Upgrading 2.25" to 2.5" provides a 23% increase in flow area Upgrading 2.5" to TU 3" provides a 44% increase in flow area Upgrading 2.25" to TU 3" provides a 78% increase in flow area Chris-TU

Thanks, I am looking for a faster spool up from my garrett, as my car is heavy and high geared. I am considering doing a 30-50 shot of nitrous to get the little mother spinning when I mash the peddle but if the bigger swing valve will do it all the better. The motor is stock except for a 2 1/2 " exaust system with 2 1/2" free flow cat, glass pack muffler for turbo use and a ansa resonator twin tip unit. The motor has a KandN in the stock box, a stage 3 smec from FWD, cam timeing has been altered to give beter toqure and 15 degree ignition timing. So I am looking for more zip off the line and a better top end too.

Quote:

Originally posted by Chris W We offer a Quick Spool option on our turbos that reduces spool time by as much as 300-400 RPMs. This is done by lightening the turbine wheel approximately .5 ounces. A stock stage 1 wheel weights 9.1 ounces. This is only a $40. option on our turbos. More details and photos can be seen at the following thread: Rebuild on a budget Chris-TU

So I am looking at about 1,000 bucks for a new turbo, quick spool and 2.5 swing gate is that correct?