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by **seeker1056** » Mon May 25, 2009 4:36 am

Ok so its time to install my new injection pump

I know motor has to be tdc, and all the marks lined up on the gears

but is it possible to be 360 degrees out or one cycle?

if so how does one make sure that your on the right tdc cycle before installing the pump

thanx

by **PToombs** » Mon May 25, 2009 5:04 am

If all the marks are lined up, you can put the pump right in. The pump gear turns at cam speed, so you can't be off 360. Just make sure you have the correct letter lined up with the cam mark. If you're not sure, I posted what mark is for what engine on here someplace.

by **seeker1056** » Mon May 25, 2009 5:26 am

It appeared to be the letter "E" on the gear when i pulled it down?

by **PToombs** » Mon May 25, 2009 6:03 am

That sounds right. I just spent 1/2 an hour searching on here for the post I made on what mark is for what engine. I can't find the darn thing. Sorry. :cry:

by **SNOOT** » Mon May 25, 2009 8:10 am

by **seeker1056** » Mon May 25, 2009 9:34 am

nice pix snoot
cant tell from the white what letter that is though
could you post the letter and thanx for your efforts

by **PToombs** » Mon May 25, 2009 4:44 pm

That's the "E". It's all straight lines. Notice the keyway is at 5:00 also.

by **SOOT4BRAINS** » Mon May 25, 2009 6:57 pm

Have you already taken the old pump off? I just wanted to throw in, you don't have to take the front cover off and take the gear out to swap pumps. If you just remove the oil fill tube, the pump gear nut is right behind it. The gear is retained in the case, and cant move enough to jump teeth. Good luck!

by **seeker1056** » Tue May 26, 2009 8:19 am

total rebuild so the cover is already off lol

but thanx anyways

by **SOOT4BRAINS** » Tue May 26, 2009 12:13 pm

In that case, go ahead and jump the timing a tooth!

by **bgilbert** » Tue May 26, 2009 1:37 pm

Of course you can be 360* off. Only thing is that would be right back where you started. I think you're getting at 180* off. But once again, the pump will only go on one way.

by **seeker1056** » Tue May 26, 2009 4:02 pm

I have so much custom internal timing i was told to make sure i installed the pump straight up
howere
I may installl one tooth off (if possible) to make it easier to get at the bolts n such

by **PToombs** » Tue May 26, 2009 5:19 pm

I was pawing thru my 93 FSM tonite and noticed that it tells you to line up on the letter "E".

Bill, he was right when he said 360*. The crank could be 1 complete revolution off. 180 would be 1/2 a turn.

by **Richie O** » Tue May 26, 2009 5:35 pm

PToombs wrote:I was pawing thru my 93 FSM tonite and noticed that it tells you to line up on the letter "E".

Bill, he was right when he said 360*. The crank could be 1 complete revolution off. 180 would be 1/2 a turn.

I was going through my fsm and then I remembered I can't read. :roll:

by **SOOT4BRAINS** » Tue May 26, 2009 9:36 pm

I jumped mine a tooth on the timing, and then adjusted it back from the outside. It is retarded on the outside compared to the stock marks, but judging by sound/ feel, its at about 1/8 inch advanced from stock. I have a little more room to retard it as well. Sure makes it easier to get to some of the stuff in there.

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