How do I adjust the Cummins Timing?

[Flash1034]

A nice TDR member told me that real performance gains can be had by setting the timing to 1. 75". Can anybody tell me how this is done?

Thanks,

RamBill

 

[KEENO]

Hey RamBill!

Many of us First Gener's are running pump timing @ 1. 35mm set using dial indicators w/ the intercooled trucks. 1. 75mm seems a bit high. Check w/ Ted Jannetty for his input and he'll tell you that 1. 35mm is the magic number you're after.

Just want I've been told & have our trucks set to...

Keeno

PS: I did talk to Jim Leonard in So. Cal once about timing a '93 that we bought on the west coast and he mentioned he used to time the Non-Intercooled trucks @ 1. 75mm. I don't know if he uses this same spec for the inter-cooled trucks though.

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1992 W250 5spd. 3. 54 gears, LSD, JRE enhanced VE Injector Pump, BD High Output Injectors, 12cm2 wastegated housing, 3 1/2" JRE modified Banks exhaust/Walker muffler, pyro/boost gages, K&N, South Bend Clutch, Skyjacker 2 1/2" front suspension lift & Bushwacker 'cut out' Flares to clear 315/75R/16 BFG AT KO's, Mag-Hytec, Amsoil, Rhino liner, Fully Chrominated Aluminum Aftermarket Accessory T-handle Shift Knob

[This message has been edited by KEENO (edited 04-25-2001). ]