Timing thread

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Re: Timing thread

Postby spencerdiesel » Fri Apr 01, 2016 7:19 pm

Thanks. What causes the extra case pressure that just bumping the pump 7 degrees doesn't?

Or is it relying on the higher case pressure to just advance static timing 7 degrees?

How long do most people run the KSB hot for? Just to race?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Timing thread

Postby PToombs » Sat Apr 02, 2016 11:56 am

Now you're asking for more info than I have, lol. I read it on here what happens with the KSB on so the info is here someplace, I just have no idea where.
I just kick mine on when I'm playing with it, I'm not sure what others do.
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Re: Timing thread

Postby spencerdiesel » Sat Apr 02, 2016 7:08 pm

Is it rough on stuff to flip it in the middle of WOT? :D
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Timing thread

Postby PToombs » Sun Apr 03, 2016 4:05 pm

Not sure. I have done it, lots of times.
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Re: Timing thread

Postby spencerdiesel » Sun Apr 03, 2016 5:37 pm

How much timing do you have Pete?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Timing thread

Postby PToombs » Mon Apr 04, 2016 4:23 pm

IIRC it's set at 1.85mm. I had it up to 2.25 but it was rattling pretty good. Factory setting is 1.25. I don't what that comes out to in degrees, I have never seen a conversion chart for a VE in all the years I've been playing with 5.9's.
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Re: Timing thread

Postby ellis93 » Mon Apr 04, 2016 4:39 pm

93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: Timing thread

Postby PToombs » Tue Apr 05, 2016 3:54 pm

Ellis, did you actually try that calculator? 2.25mm = about .12 degrees! I don't think that's quite right. ;)
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Re: Timing thread

Postby ellis93 » Tue Apr 05, 2016 5:30 pm

PToombs wrote:Ellis, did you actually try that calculator? 2.25mm = about .12 degrees! I don't think that's quite right. ;)

Thats why i Posted it..........To see if y'all seen the same. I thought it was bonkers myself.
93 D250 ,5 speed,4.11s,k&n autometer tach pyro trans boost guages,GDS 60mm h1c 14cm,honed 5x10,hplp/reg,1/8 timing,M+H M2 fuel pin, tims cooler tubz
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Re: Timing thread

Postby spencerdiesel » Wed Apr 06, 2016 5:29 am

I didn't want to say anything. I have issues with talking before thinking :|
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Timing thread

Postby spencerdiesel » Wed Apr 06, 2016 7:29 am

If one wanted to keep base static timing at or below 17*, and sweep to 27* with the spacer, how much power could be attained roughly? Basically, how much rwhp could be made with 17* static timing?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Timing thread

Postby PToombs » Wed Apr 06, 2016 4:48 pm

ellis93 wrote:
PToombs wrote:Ellis, did you actually try that calculator? 2.25mm = about .12 degrees! I don't think that's quite right. ;)

Thats why i Posted it..........To see if y'all seen the same. I thought it was bonkers myself.


I think it's more of a geometry thing, not an engine timing app.
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Re: Timing thread

Postby spencerdiesel » Mon Apr 18, 2016 8:35 am

Anyone know how much the dealer would advance the p pump trucks when a customer complained of "low power" back in the day? My instructor has a 215 horse p pump truck he bought new and took it in (long time ago) to get them to bump it ;)
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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Re: Timing thread

Postby DMan1198 » Tue Apr 19, 2016 3:35 pm

With a 215 pump it'd be a good idea to make a stop in the front of the afc housing to prevent full rack travel. That way it doesn't back the timing down. Apparently that makes quite a difference with everything else the same.
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Re: Timing thread

Postby spencerdiesel » Thu Apr 21, 2016 3:20 am

Thanks Dman. Is there a p pump thread can go brush up on?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

Fuel: THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw bottomed @ 3 turns, timing bumped 3/16"
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