justinp20012500

Put a modified S300G on a buddy’s truck today.

.80 a/r ratio dual port w/g housing (14.77) w/g set to dump at 40 psi

66mm comp wheel

We had to modify the drain tube a little, but nothing a hammer wouldn't fix.

Truck mods: 55 lmp edm injectors, drag comp, 22 fuel psi at idle (my dd'3 flow 42 lpm)

6 speed 3.55 gears 8 inches of lift w/38" super noise makers. (Man aggressive tires suck)

A little laggy from 0 to 5 psi, but once it hits 10 the needle will slam to 40. The truck did not really clean up at WOT in 6th gear. Pyro saw 1400* and we are @ 4400' elev.
Even with all the fuel the w/g was still able to keep it under 41 psi.

Later after the run and the re-torque on the ARP's we plugged the w/g and the turbo made 50 psi, and about the same amount of heat.

Not too bad for a huge truck.

Tomorrow we are going to hook an oil psi gauge up to the pyro hole and measure back pressure.

Here's a pic

justinp20012500

O ya, I already made him throw away the fram

joefarmer

So did you put the 300 together or was it complete from the unnamed supplier?

...basically, I'd like a mild turbo for the 12v for awhile that I could spool at the strip with small-ish shot of air-in-a-bottle for the top end.

brandon.

Jim Shulmister

Is the 66 that is laggin it or the exhaust housing?
-Jim-

justinp20012500

I have been working with the "unnamed supplier" for about a year. There just wasn't a demand for something like this in Utah. I have had some built for guys using it as a top turbo with a big brother. They should finish fabrication in the next week or so.

There is still allot of improvement to be made on the w/g side of this thing.

The two ports bypassing the exhaust are only 7/16" in dia. and the "flapper" that covers them is 7/8". If someone was running huge amounts of fuel I would cut the holes to 3/4" and set the w/g at 45'ish. Right now he is not having a problem overcoming the gate though.

The plate that covers the "flappers" has a allot for improvement also. It only allows the w/g to open at maybe 10* before they hit the plate. I have one that is getting programmed on a flow jet that will be 3/4" thick. That way I can shape the inside of the plate to allow the waste gate to open up xx amount of degrees. (I did the same thing on the backing plate that is on my HX40/35)

This bolts up to a HX 40 DP, or the marmon flange can be machined for the new 03+ trucks.


It is the exhaust housing. AND the 38" tires coupled with 3.55 gears.

The turbo can be made with a .70 a/r housing (12.06 cm)

signature600

Are ALL B1's supposed to have two wastegate "flappers?" Mine only has one!!

Chris

gunracer1

well i have had the hx 55 on now for a couple of weeks, it does not build any boost to speak of below 2500 rmp but from 3k up it is a monster. it has a 19cm exhaust housing and i have a 17 i need to switch it with just to see how much quicker it will spool. but i still am planing on going with a set of twins. i want the bottomend power back. mike

justinp20012500

BigBlue

That's just a bit bigger than my HY35.