Contemplating Dual Feeding

[ITSAV6]

Seriously thinking of dual feeding my PTS Killer Street trans. 3rd just don't hit like it ought to at wot with the boost turned up. I have a 9.5" Pro Edge I have been wanting to put in and that would be the perfect time. I know the directs are blues and I will be replacing them. What clutches/how many should I use?

 

[TexasT]

If I had the money for a billet shaft forward drum the dual feed is a no brainer to me. You should look at what you are using for line pressures/size of your boost valve and spring as you might need to go a little more conservative depending on what is in there. I have read that the pts used pressures in excess of 300psi at max tv.
I used raybestos stage 1 red clutches in the direct on mine. I did use an extra steel to set it up tight(though not as tight as some like). I am using a .500 boost valve and the 700r4 spring to get 270 or so at max tv. I am super happy a year in but I haven't been to the track with it.
You results may vary.

 

[ITSAV6]

My pressure test shows 295 or so at full tv. I will hafta look at my build sheet.

 

[ITSAV6]

What boost valve would be best, believe it is a .570 i have now. Whats the best clutches for the directs?

 

[Steve V]

What boost valve would be best, believe it is a .570 i have now. Whats the best clutches for the directs?

.500 is less likely to hang up than the .570 boost valve, red clutches unless 10.50 or faster then blues. Blues do not like street use from what I have read. Dave sell's some .533"s? that I believe he has made special that won't hange up.

 

[ITSAV6]

.500 is less likely to hang up than the .570 boost valve, red clutches unless 10.50 or faster then blues. Blues do not like street use from what I have read. Dave sell's some .533"s? that I believe he has made special that won't hange up.

Thanks Steve.

 

[Mr.Spool]

Blues do not like street use from what I have read.

don't believe everything you read

 

[chris718]

The highest quality valves are manufactured on SWISS CNC SCREW MACHINES. What many have failed to realize here is what happens in low /low 2 and reverse ranges when larger boost valves are used. It has been covered before. Additional mods must be made elsewhere or pressures in these ranges get screwy the bigger the boost valve is. I have not found the blueplate to be any better in the 2004r than a stock or red raybestos clutch in the 2004r with conventional direct clutch flow paths , however I have not tried the blueplate with a dual feed direct clutch because of my success with what others may believe to be a clutch plate of lesser quality. Dual feed works and should be used in conjunction with the information/tech given to the industry in the form of a deleted 3/2 control valve . The real benefits of the large boost valve is the increase in pressure rise at lower throttle angles. The .555" boost valve is the clear winner overall. The tight fit into the reamed pump bore eliminates loss of torque signal oil to the valve at running temp, a real cause of pressure loss related failures in the 2004r.

 

[chris718]

The highest quality valves are manufactured on SWISS CNC SCREW MACHINES. What many have failed to realize here is what happens in low /low 2 and reverse ranges when larger boost valves are used. It has been covered before. Additional mods must be made elsewhere or pressures in these ranges get screwy the bigger the boost valve is. I have not found the blueplate to be any better in the 2004r than a stock or red raybestos clutch in the 2004r with conventional direct clutch flow paths , however I have not tried the blueplate with a dual feed direct clutch because of my success with what others may believe to be a clutch plate of lesser quality. Dual feed works and should be used in conjunction with the information/tech given to the industry in the form of a deleted 3/2 control valve . The real benefits of the large boost valve is the increase in pressure rise at lower throttle angles. The .555" boost valve is the clear winner overall. The tight fit into the reamed pump bore eliminates loss of torque signal oil to the valve at running temp, a real cause of pressure loss related failures in the 2004r.

 

[TexasT]

The highest quality valves are manufactured on SWISS CNC SCREW MACHINES. What many have failed to realize here is what happens in low /low 2 and reverse ranges when larger boost valves are used. It has been covered before. Additional mods must be made elsewhere or pressures in these ranges get screwy the bigger the boost valve is. I have not found the blueplate to be any better in the 2004r than a stock or red raybestos clutch in the 2004r with conventional direct clutch flow paths , however I have not tried the blueplate with a dual feed direct clutch because of my success with what others may believe to be a clutch plate of lesser quality. Dual feed works and should be used in conjunction with the information/tech given to the industry in the form of a deleted 3/2 control valve . The real benefits of the large boost valve is the increase in pressure rise at lower throttle angles. The .555" boost valve is the clear winner overall. The tight fit into the reamed pump bore eliminates loss of torque signal oil to the valve at running temp, a real cause of pressure loss related failures in the 2004r.

Is this the reason for the boost valves with the o-rings? I know I have seen Bison post about the leakage at that area.

 

[chris718]

Yes, it is an attempt at reducing the amount of torque signal oil lost at the interface. Sealing off leakage would also cause the pressure acting on the valve to deadhead resulting in a fixed line pressure if line pressure was used. This is one of the reasons that line is reregualted at the tv limit valve to 70 to 90 psi and fed to the plunger where the plunger then controls it or reregulates it again from zero at closed throttle to 60 to 90 at wot.

 

[chris718]

Sorry for video hit key in error.

 

[V6sleeper]

Sorry for video hit key in error.

LOL that video should be the grand nationals theme music..

 

[ITSAV6]

By chance does anyone know what size Bruce drilled the direct hole in the seperator plate?

 

[Steve V]

By chance does anyone know what size Bruce drilled the direct hole in the seperator plate?

You need to get ahold of Patrick or Richard Clark, RC has a book with all the hole sizes etc and maybe able to tell you as he Bruce at one time build some stuff there so I could learn. @SloGN

 

[Steve V]

You need to get ahold of Patrick or Richard Clark, RC has a book with all the hole sizes etc and maybe able to tell you as he Bruce at one time build some stuff there so he could learn. @SloGN

 

[Steve V]

You need to get ahold of Patrick or Richard Clark, RC has a book with all the hole sizes etc and maybe able to tell you as he Bruce at one time build some stuff there so he could learn. @SloGN