Max Boost ?

[RedRamer]

Just installed the boost guage in the manifold. checked wastegate operation and it opens at 20#.

My max boost is only 17-18# at WOT

Checked all hoses, new air filter all OK.

Does this sound right?

 

[SLang]

That's the right # for an Auto.

 

[Six_Man_Diesel]

Thats what I was getting goober, until I plugged my wastegate line, now I get around 31 at WOT

 

[BHaner]

I get about 34# now. Before without the plate slid and with the wastgate blocked I only got 18-20.

 

[RedRamer]

Thanks for replies.

Bhaner...

Hows the truck run with the stock plate moved up?

Mileage drop any?

 

[Six_Man_Diesel]

With my plate slid all the way, and the AFC starwheel adjusted all the way for smoke, I still get 21 mpg on the hwy. Stop and go mileage is another story, especially with my big heavy right foot... .

 

[BHaner]

MPG

I have never gotten above 17 before or after the plate movement. Even after the timing change and the BD transmission. Must be the larger tires (285x75xr16) or the fact that i enjoy smoke way too much

 

[BHaner]

opps forgot...

You asked how it runs... With the K&N, straight 3", BD trans, plate moved as far as it would go, and AFC spring loosie goosie... (as long as you enjoy smoke during turbo lag ) It will pass anything on the road and is soooo much better than stock. However #5 plate is on the way.

 

[RedRamer]

Thanks

#5 plate, eh!!!!

 

[BHaner]

#5 plate

Time to test out this trany!

If it holds up well maybe some 370's, and 3k gov spring kit.

With all my mods it will then be time for a turbo change from what i hear... any ideas? PDR HX-35, PDR HX-40, or just a 14 or 16 cm housing?

 

[BFaoro]

HAVE

I was getting about 17 or 18 lbs with my standard. I plugged the wastegate and now I go up to 27. WOT. Maybe I should check for some leaks ?

 

[BHaner]

Plate is in!

Plate is installed in the full forward position. transmission is working great. My boost is now 40# at WOT. My egt's are never above 800 post turbo??!! Is this normal?

 

[Joseph Donnelly]

40 psi is hard on the turbo and that amount of boost is really not needed for the power level you are discussing. Sickly made 43 psi at 609 hp, BTW.

 

[BHaner]

Thanks Joe!

I am going to get one of those bleeder screws for my waste gate. Is this something I can make from a needle valve I have installed now? When the valve is opened even the slightest I am back down to 20 psi within a second or two. My plate was used and did not come with one. What should i set the boost at? I see most people at 35-38 max. Are my egt's normal???... . they seem low. Maybe I have a fuel problem. I did not expect to be able to run it full forward. Thanks for your reply.

 

[Joe G.]

I have a #5 TST kit in my '95. The kit comes with a boost elbow for the waste gate. If I really get on it I see 30 PSI up hill and unloaded. Most of the time when I'm towing it will get up to 28 or so on a steep hill. From what Ted Janetty (sp) says that may even be too much boost.

 

[Joe G.]

Goober,



If your auto is stock the #5 plate may tear it up.