Thread: Waste gate options? on a 6262

Why bother going with a big laggy turbo like the 6262 for only 10psi? I ran a a 76trim turbo (Precision 5431E journaled bearing) and at 12 psi it was still pointless. It would take for ever to build to 12psi, but then when I cranked the the boost to close to 20psi, after 12 psi it would just drop to 20. Because the bigger turbo is meant to be ran at a higher psi.

I am now going to be running a GT3076, which is still way too large for 12 psi, but I got it from Coheed to help him pay off his 6262

Have you ever seen this work in practice? I didn't think this would work. I would think even if you kept the gate fully open all the time you'd still creep to the same boost level?

(I might even be in the position to test it sometime soon...)

On my 38mm Tial, I had no problems even keep it at even 5psi on VE with log, though I was on low cams until 6k rpm and had a 7500 redline,

what location of the wastgate would be Ideal..im going with the Pro-tec Eql mani..any pics or examples?

Good wastegate placement means the angle of the exhaust leaving the main collector is not a 90 degree angle or worse. You want more of a "Y" shape if possible. That can be really hard to come by on our FWD setups. 90 degrees seems to be about standard. I've seen worse.
Also, making sure the wastegate pipe can draw from all 4 runners is first and foremost. Some manifolds, especially log styles fail in this area as well.

Here is a wastegate preference manifold:
http://i18.photobucket.com/albums/b126/Mr_Deagle993/img1230505591149.jpg

That gives flow preference to the wastegate pipe, and the turbine is secondary concern. That manifold will have great boost control. The wastegate draws from all 4 exhaust runners (most important) and it also leaves the main pipe at a shallow angle.

Here is an example of bad placement. It only draws from one exhaust runner (lol), and it is a 90 degree angle:
http://beesandgoats.com/boostfaq/drag_manifold.jpg

Where all 4 cylinder runners meet. Protech has a pretty good location.

thanks Ben,Vadim

this is the pro-tec mani im looking to get
Protech-Fabrication | Facebook
or this
Protech-Fabrication | Facebook

let protech handle where they put the wastegate no need for you to worry about it and i would go with a 44mm if i was getting a manifold made

yeah a 6262 will definitely creep on a 38mm gate. I know my 60 trim garrett t3 would creep from wastegate pressure of 14.7 to roughly 20psi by 8k on a 38mm gate to give you an idea and on a tubular manifold as well. My t67 would creep to about 23 lbs by 8500 on the same 38mm gate. I wasnt concerned as I could run 20 psi on pump gas with no issues so that was basicly my low boost.

Generally you want to use as small of a gate for the boost level and power you want to run on low boost. If your low boost is 25 lbs then a 38mm gate should be fine. If not, 44 or larger.

Depends on the setup. If the setup just suffers from poor design it should work with the aem ems or the avcr. Even done this way you still may have some creep. If you are over running the gate your just screwed. I guess I will find out with mine.