Turbo gate questions....

[SLVRBullet]

so im looking at swapping out my current turbo set up for a T4 66/73/14 non gated turbo. The truck is my daily driver & use no injectables, i tow but not heavy ( 5k & under ) Im looking at using a T4 manifold also but am a little confused about external gates vs. internal gates.

I have been told that BW has stopped making the larger performance turbos with internal gates due to guys over spinning them & basically destroying them. So i am being told that my only option is to go with a non gated turbo & if i wanted a gate that i need an external one.

When is it necessary to run a gate? ive been told that i dont need to worry about it unless im over 55 lbs. of boost or if i was running twins etc. but the turbo co. told me i should always run a gate. I know there seem sto be a trend now of guys running the non gated turbos & it seems they are not using an external gate.

So i guess im really confused about my options & what is actually required for a DD/tow vehicle.

Any help would be great.
Thanks

 

[fox]

It is all relative, but a gate should be used to limit drive pressure and turbo speed.
Running a large exhaust housing will slow spool up but makes it tougher to over speed it.
At the opposite end, a smaller housing will spool quicker but is easy to over speed it, so a gate lets the heat out.
Problem is the balance of the housing/heat/gate size.

I've talked to guys who think they can and need to spin an HX35 to 60 psi boost!!!
They are heating the air very hot, and risking a blown head gasket/melted pistons/etc.

Drive pressure is the manifold pressure pre turbo and is refered to in a ratio.
It should never be higher than boost for street use.

For what you do with your truck, leave the stock turbo on it!
There is better ways to add power.

 

[SLVRBullet]

well the stock turbo has been off for some time now.

i will probably just leave the set up i have on the truck now for a while.

Im just trying to figure out the gated vs. non-gated set ups.