I jumped the pump a tooth and want to time it at 30*, so does anyone know how far past the stock timing mark I need to go?

 

I believe you have to put a dial indicator in the back pf the pump and check lift. Then im not sure exactly how ya figure it out I've just kinda heard. Plus all pumps are different so I don't think you can go by just go by moving the pump a certain measurement and have x* of timing. I need to check mine one of these days and figure out what im running as well

 

Timing is set by taking the IP-injector lines off, unscrewing the bolt in the MIDDLE of the head, and screwing the dial indicator in there. Then check for lift. That can then tell you how many MM's of lift you have and the convert it to *.

At least, this is how we did it on VW VE's.

 

I'd like to have a timing light for mine, but haven't got one yet...

 

I would think every pump is a bit different, but a tooth and to the head should be about 30.

 

Is this what you measured on your truck?

So to the head on the stock tooth would be 20 ish? (assuming all else being equal, non i/c etc.)

 

How far does one dare go degree wise? Is two teeth jumped about the same as one tooth + pump towards the head?

 

Thanks Jason, ill start there. Without a ksb its like timing a p pump. So im going to start around 30 degrees and work it from there.

 

just because your pump doesn't have the KSB it sill has the dynamic advance piston operated from the internal case pressure.

 

X2. The KSB is only there as a cold-start advance mechanism.

 

Ron,
Sorry I wasn't able to get back to you Friday . We get pretty swamped in the afternoons .

I think you might have misunderstood my response on the advance . We block off the pumps internal advance capabilities . It is not possible for your engine to advance anymore . We have the pump locked down at 0 degrees . It's going to be hard to tell where you should be on timing . I would probably start at setting the engine 30 degrees before TIC then mount your pump . This should give you a good reference point . You might have to back that down if have a hard start . Maybe down to 25 degrees .
Thanks,
Rob

Did I missunderstand the dynamic advance?

 

No you are correct. All the Scheid lightning ve 14mm or 12mm pumps (3 to date) I have ever been in have the dynamic advance locked at 0 degrees of movement. They do this with a series of shims and a insanely stiff timing piston spring.

As far as the amount of timing vs position, I havent the slightest idea as stated above it varies truck to truck pump to pump.

I always just set mine by the way the truck responds on the dyno or where I feel that it runs the strongest.

 

# of teeth on pump/180 = degrees of timing per tooth

Example: if it's 36 teeth, 1 tooth = 20* timing. If it's 48 teeth, it's 15* timing

 

Looking like 72 teeth from a picture I've seen. So each tooth would = 10* timing. So jump 3 teeth and put it on the stock timing mark....

 

Might as well have a ppump if you don't have the wonderful advantage of dynamic timing.