Inj pump timing

[charlieo]

Does anybody know where I can find info on timing my inj pump . It is a 4bt w/ the ve rotary pump. Thanx !

[JimmieD]

Are you wanting to bump time for better performance, re-time to stock because it's currently out of time or re-time a new pump in your engine?

[charlieo]

inj pump

I need to first re-time to stock specs. The original pump was gone when I bought the motor as well as the inj pump gear so all I really know how to do is find TDC . I know there is timing letters on the gear but I saw no timing marks . Thanx

[JimmieD]

OOOoopppsss, you're over my head on that one! I don't currently have any info but I'll see what I can dig up. I'm off the net for a couple of days so it may take a while. E-mail me or re-post if I haven't gotten back to you in a few.

JimmieD

[charlieo]

Timing

OK I talked to my Case suppliers service manager & he helped me out a little. I set the motor @ TDC (pretty easy) now I have to figure out how & where to set the pump. He said rotate the pump until the "B" is lined up somehow with the other gear . Try to start motor if it doesn't start it's probably 180 off . When I figure it out I'll post some more ! Slowly but surely I'm figuring it out.

[Gordon Maney]

Please share with us what you learn.... it is interesting.

[Tom Petroff]

OK I talked to my Case suppliers service manager & he helped me out a little. I set the motor @ TDC (pretty easy) now I have to figure out how & where to set the pump. He said rotate the pump until the "B" is lined up somehow with the other gear . Try to start motor if it doesn't start it's probably 180 off . When I figure it out I'll post some more ! Slowly but surely I'm figuring it out.

Below the pump mount is a plastic index pin. While slowly "baring" the engine over keep finger pressure on the pin until it pushes in. Do Not crank engine
as this is a plastic pin that will break.
That locates TDC. Pull the pin back out so you don't forget it.
Look through the hole in the cover with a mirror and you should see a mark on the gear to line the other gear up with.
I assumed the front timing cover is still on?
Tom

[charlieo]

timing

I found a plunger / screw combo (metal) which is screwed into the pump body which is close to the 3 bolt mounting flange which bolts the pump up to the back of the front cover. It doesn't pin the pump though . I even put a clean wire up there while turning over the pump & it never seated so I called Central Motive Power ( inj pump people) & they said that is just a stop to hold the shaft from turning while being installed. Maybe this is the wrong plunger (obviously). Is the one your talking about have 2 screws that hold a plate on ?
Front cover is off too.

[JimmieD]

The timing indicator pin assembly that Tom's talking about is down below the injection pump on the same [back] side of the timing gear case. These can be easily broken and sometimes when that happens a cover is made and screwed in place of it over the hole so it may be there, may not.

[Tom Petroff]

I found a plunger / screw combo (metal) which is screwed into the pump body which is close to the 3 bolt mounting flange which bolts the pump up to the back of the front cover. It doesn't pin the pump though . I even put a clean wire up there while turning over the pump & it never seated so I called Central Motive Power ( inj pump people) & they said that is just a stop to hold the shaft from turning while being installed. Maybe this is the wrong plunger (obviously). Is the one your talking about have 2 screws that hold a plate on ?
Front cover is off too.

The screw you found on the pump is used by the pump rebuilder to hold the shaft at # 1 while installing a rebuilt pump.It is to be loosened and a supplied shim installed under the head and retightened after assembly.
If this pump was rebuilt it would have been at #1 fire position, and the shim would have been wired to the pump for later use.
As a last resort you could take the pump to the place you mentioned for having it set to #1 for you then line up gear on keyed shaft and install once your sure the engine is at TDC.
With the cover off you should see a mark on the gear to line the "B" up with on your pump gear.
It could be a "dot" but most likely it is in the shape of a triangle.
This link shows the plastic pil location

http://dodgeram.info/tsb/1994/18-10-94a.htm

It shows the 5.9 engine but your pin is the same.

This link shows the dreaded dowl pin that Jim talks about. Something else you might want to check while your here.

http://dodgeram.org/tech/dsl/Dowel_Pin/tab.htm

Tom

[charlieo]

engine timing pin

I found the engine timing pin your talking about , it's used to set the motor @ TDC . Thats pretty easy. All I need to know now is how to set the pump. When I bought the motor it was a basic long block . It didn't even have a inj pump gear or the inj pump. My machine shop had a ve-rotary pump & some other things for a $100.00 bucks . The shop foreman said the motor it came off of ran so I think the pump is OK. I'm picking up another 4bta hopefully today & I'm excited because its a P7100 inline pump engine, I really hope it has the balancer shaft in it too . I'll keep you guys posted . Thanx for the info too !

[charlieo]

timing

OK . After I found TDC on the engine , I turned the woodruff key on the inj pump shaft to about 11:00 & put the inj pump gear on & the "B" on the gear is 1/2 of a tooth next to the timing mark on the cam gear . After doing all this its pretty easy. Ser manager said if it doesn't fire there the pump is probably 180 off. So wish me luck . Other than that I have to order another dip stick tube , I put it in the wrong hole (forward position) I should have put it in the rear position next to the starter !

[JimmieD]

VE pump for a hundred bucks!??! Yipes....

That rotary pump on a 4BTA could be nothing short of awesome with the right turbo[s] man! You could be hitting well over 200 hp and 400 torque with the aftercooler if you tweak it some. What a monster for 3.9L ha haha!

[charlieo]

The original rotary ve was for a constr application, this one I have on it now is a auto application & it has the anaroid (smoke control I guess) on top. I really hope this pump is OK.

[JimmieD]

Got my wires crossed, CharlieO! Was meaning to say the P pump could be a really hot setup, but nothing at all wrong with a VE pump. Nice thing about the 4BT and 4BTA is they have all the same parts that the 6BT big dog has so the performance potential is really pretty amazing!