Engine/Transmission (1994 - 1998) How much does the rack travel vertically?

[Forrest]

I measured the shiny spot on the 0 plate ... looks to be 8 or 9/32. Sure doesn't seem like very much, does it.





thanks

 

[JohnE]

The fuel profile on a normal plate is approx. the lower &frac12; inch. You measured the shiny spot at mid point of the fuel <strike>curve</strike> flat? I assume the shiny spot is where the governor arm actually contacted the plate? You had egt problems without hitting max fueling at higher rpm?



I missed the point of your question.



edit

corrected statement for #0 plate

 

[C Schomer]

It's been a couple yrs since I checked mine. I think it went up the defueling slope about 1/16"or a little less. Craig

 

[Forrest]

Originally posted by JohnE

The fuel profile on a normal plate is approx. the lower &frac12; inch. You measured the shiny spot at mid point of the fuel <strike>curve</strike> flat? I assume the shiny spot is where the governor arm actually contacted the plate? You had egt problems without hitting max fueling at higher rpm?



I missed the point of your question.



edit

corrected statement for #0 plate

The chingaso strikes the plate, low on the plate @ low rpm & as the rpm rises, so does the chingaso. What's that distance?

 

[JohnE]

If the total fuel profile is &frac12; inch the fuel arm should travel less?



I keep meaning to order the tech specs on the P pump to accurately answer these questions.

 

[RT66DOC]

Ahh Forrest, as I tell my wife, "I'm not as dumb as I look", but WTF is a "chingaso"??? Is this some spanish noun I missed in my travels thru the great SW?

 

[Forrest]

From what I understand, approx the same thing as a chingaderas. ... eh ... pm coming

 

[bighammer]

You must be talking about the governor lever and the vertical travel on the plate, right? The rack only moves horizontal.

 

[Forrest]

I think right bighammer ... now I'm not really scooped on how / what causes it to move vertically. But, it moves in the vertical based on rpm, right ... makes sense it's controlled by the gov.

 

[LHallmark]

Cheez you guys... ... ... .

Thing-a ma-gig = thing-a-ma-bob = do-hickie =do-dad =chingaderas = CHINGASO !!!! I'm from Louisiana and I understood what Forrest was saying !!!! Can't you guys speak and understand 'merican????

 

[JohnE]

Originally posted by Forrest



... now I'm not really scooped on how / what causes it to move vertically. But, it moves in the vertical based on rpm, right ... makes sense it's controlled by the gov.

Spinny things in the rear section called flyweights. Faster they spin the further they attempt to move out. The further they move out the higher the governor lever raises on the plate. Adding a governor spring kit (GSK) makes the moving a lot slower.

&frac12; inch is the same fuel curve for 2400 rpm defuel, 3000 rpm defuel or 3600 rpm defuel or 4000 rpm defuel depending on the governor spring stack resisting the flyweights.



Now you see why some fuel plates don't work well after going to the springs. For me GSK and stock fuel plate put max hp at 3,200 rpm. I don't care to run those rpms all day. Switched to a #4 and max hp dropped to a nice useable 2300 rpm. Adjust the governor lever a bit and the max hp will drop lower.



edit

fixed a couple typos

 

[C Schomer]

It's kinda' like a cabrone!

 

[RT66DOC]

Thank you all for clearing up the chingaso mystery.

 

[Forrest]

Originally posted by JohnE

Spinny things in the rear section called flyweights. Faster they spin the further they attempt to move out. The further they move out the higher the governor lever raises on the plate. Adding a governor spring kit (GSK) makes the moving a lot slower.

%frac12; inch is the same fuel curve for 2400 rpm defuel, 3000 rpm defuel or 3600 rpm defuel or 4000 rpm defuel depending on the governor spring stack resisting the flyweights.



Now you see why some fuel plates don't work well after going to the springs. For me GSK and stock fuel plate put max hp at 3,200 rpm. I dpon't care to run those rpms all day. Switched to a #4 and max hp dropped to a nice useable 2300 rpm. Adjust the governor lever a bit and the max hp will drop lower.

& outstanding explanation John.



I chatted with Mark @ TST about plates some yrs ago & he said the #4 was designed for the GSK pumps ... ah ... the technology.

 

[nfox]

Rack Travel

So the gov lever should contact at the very bottom of your plate and go up from there. Did i understand this right, the shiny spot is where the gov lever is first hitting the camplate?

 

[Forrest]

Yes & no ... don't you hate that kind of answer. :-{}



It hits the plate based on the adjustment screw @ the back side of the lever. That adjusts the angle of the dangle ... where it starts to hit the plate.



The shiny spot is 8 or 9/32 long on the face of the plate. The bottom of the shiny spot is where the arm 1st hits the plate & as rpm goes up, so does the arm. Repeated use makes for the shiny area. eh?

 

[NBowlin]

i took my 0 plate out and looked at it. when you look at the profile of the plate. where it juts out into a bench before it breaks and goes down. now about dead center of that flat area there are wear marks and it is worn shiny. i dont understand the goings on in there enough to make sense of it.

 

[Forrest]

My shiny / rub area is down from center. The lowest part is about 4/32 up from the bottom.



Sooooo ... I'm hitting the #100 plate on the ramp, i. e. #10 portion & ending up on the #0 portion. If the rack was set too high, it would not hit the lower ramp area.

 

[C Schomer]

I used a magic marker to blackout the plate when I got to the fine tuning - had a new shiny spot after each adjustment. Craig