Engine/Transmission (1994 - 1998) Fuel Plate

[DieselNasty]

I did a flat plate yesterday and thinking about how much more power i should have. If a #5 plate in a 160 pump makes 255hp/650ftlbs then how much should I have if it is full forward?



Chris

 

[ABorchard]

Don't know how much power gain you will have but am certain you will have more power gain with the plate 1/10" back from full foward than you would with it full forward. Full forward screws up the geometry with the governor arm.

 

[Forrest Nearing]

Don't know how much power gain you will have but am certain you will have more power gain with the plate 1/10" back from full foward than you would with it full forward. Full forward screws up the geometry with the governor arm.

on what plate?



different plates go to different depths... a #0 plate has more depth than a #5 plate... if he only ground it as deep as the deepest point on the #5 plate, then why would it make more power . 100" back from full forward?



Forrest

 

[DieselNasty]

I did a flat plate yesterday and thinking about how much more power i should have. If a #5 plate in a 160 pump makes 255hp/650ftlbs then how much should I have if it is full forward?



Chris

I also forgot to ask, is that flywheel power or rear wheel power?

 

[pwerwagn]

The TST plates are rated at rear wheel hp.

 

[ABorchard]

on what plate?



different plates go to different depths... a #0 plate has more depth than a #5 plate... if he only ground it as deep as the deepest point on the #5 plate, then why would it make more power . 100" back from full forward?



Forrest

A stock plate full forward can cause some very retarded top end fueling because of the angle the gov arm contacts the plate. Some of this can be corrected by advancing the pump timing a bit but not all of it. You would be far better with a #100 or a #0 in the stock position. Full forward does not mean full power if you are injecting the extra fuel too late in the stroke, more smoke and egt are the result, not more power.

 

[Forrest Nearing]

what is optimal rack travel?



stock plate has got to be at least . 100" shallower than a #0...



so how could optimal plate setting be . 100" back for each plate? it will yield a different rack travel...



I've NEVER heard of a stock plate full forward adversely effecting duration!!!



Forrest

 

[ABorchard]

I've NEVER heard of a stock plate full forward adversely effecting duration!!!



Forrest

Neither had I till Piers told me of it. He always recommends stock position. That's why outfits like TST put great effort into researching different plate profiles, so they can be run in the stock position where Bosch designed them to be run.

Plate sliding is a cheap but inefficient way to gain hp, better to change the plate.

 

[Forrest Nearing]

sorry, but I ain't buying it...



that #0 plate TST designed allows the lever arm to move forward more than the stock plate does when installed in the stock position...



you're trying to tell me that if you move a stock plate forward so that the lever arm travels as far as that #0 plate allows it to travel will somehow cause improper lever arm geometry...



that makes zero sense...



have you ever looked at the way the lever arm contacts these plates? adjusted the lever arm, etc. ?



Forrest

 

[pwerwagn]

He always recommends stock position. That's why outfits like TST put great effort into researching different plate profiles,

I aint buyin it either. In fact, after discussing this with the person who designed some of TST plates (Forrest knows who), he even used to run the #10 foward (and he designed it!!). He did say that full foward yeilded slightly less power than back a little, but a "certain" distance foward made 48 more hp than stock position. I can see how a #0 or something could yeild less power full foward than part foward, but not a stock plate. And, the way I take it, not all plates are in the same location on all stock pumps. I assume that the factory puts a plate in pretty much the same location, and then does the gov lever adjustment. Most of the time, poeple refer to the plate being slid foward ". 0xx inches from the stock plate", not . 010 back from the front.

I dont know anything about the 160 pump in question, but at least a 215 pump is very sensitive to plate movement.

I too do not see how a stock plate full foward would cause the gov lever to contact the plate at any worse of an angle than a #0 would.



Jeff

 

[ABorchard]

So you're calling me a liar?

 

[Forrest Nearing]

just saying that however you're explaining it, it doesn't make sense...



forrest