Timing thread

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Re: Timing thread

Postby DMan1198 » Fri Apr 22, 2016 6:42 pm

I want to say there should be a couple in the 2nd gen section on cf.
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Re: Timing thread

Postby 79Powerwagon » Wed Jun 29, 2016 6:18 am

Not to derail but I was thinking on making a spacer similar to the m&h timing kit. Anyone have measurements on the thickness of spacer and shim?
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Re: Timing thread

Postby RCCUMMINS89 » Thu Jun 30, 2016 10:00 pm

You'll find that most folk in the 1st gen crowd are a tight knit.... meaning it's pretty rare to find someone who will openly copy someone else's product and/or give people an exact measurement. As we are proud to sponsor those who support us.

Now in saying that........Doesn't hurt with experimenting with thicknesses an timing curves/sweeps. That we can talk more in depth about.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Timing thread

Postby 79Powerwagon » Fri Jul 01, 2016 4:47 am

RCCUMMINS89 wrote:You'll find that most folk in the 1st gen crowd are a tight knit.... meaning it's pretty rare to find someone who will openly copy someone else's product and/or give people an exact measurement. As we are proud to sponsor those who support us.

Now in saying that........Doesn't hurt with experimenting with thicknesses an timing curves/sweeps. That we can talk more in depth about.


I hear ya. Didn't mean to take anything away from that.

Didn't know if anyone else has made their own.

Me, if I have the capability and access to the right tools, would rather make my own parts than pay for them.

I'll probably start with 1/4".
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Re: Timing thread

Postby spencerdiesel » Sat Jul 02, 2016 8:20 am

How do you adjust case pressure? At what point on the hp spectrum is it a good idea?
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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 RCCUMMINS89 » Sat Jul 02, 2016 9:17 am

One needs to tap the pump somewhere and put a gauge on it, in order to properly adjust pressure.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Timing thread

Postby spencerdiesel » Sat Jul 02, 2016 9:36 am

What's the best way to keep the shavings out of the internals?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

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 ellis93 » Sat Jul 02, 2016 7:12 pm

79Powerwagon wrote:
RCCUMMINS89 wrote:You'll find that most folk in the 1st gen crowd are a tight knit.... meaning it's pretty rare to find someone who will openly copy someone else's product and/or give people an exact measurement. As we are proud to sponsor those who support us.

Now in saying that........Doesn't hurt with experimenting with thicknesses an timing curves/sweeps. That we can talk more in depth about.


I hear ya. Didn't mean to take anything away from that.

Didn't know if anyone else has made their own.

Me, if I have the capability and access to the right tools, would rather make my own parts than pay for them.

I'll probably start with 1/4".

1/4" is a lot too much.
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Re: Timing thread

Postby ellis93 » Sat Jul 02, 2016 7:14 pm

RCCUMMINS89 wrote:One needs to tap the pump somewhere and put a gauge on it, in order to properly adjust pressure.

Most were using the shut down solenoid hole with a gutted and tapped solenoid body?
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 RCCUMMINS89 » Sat Jul 02, 2016 9:11 pm

BC847 widdled one up for me in the side of the top half of the pump. It's perdy fancy if I do say so myself.

If one were to make a spacer......... I would start around 1/8" and trial and error from there. Back in the day folks would shave the advance piston as well.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Timing thread

Postby Remps » Sat Jul 02, 2016 11:34 pm

I think begle1 had some threaded plugs to replace the fss a couple years ago. He may still have them.
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Re: Timing thread

Postby 79Powerwagon » Tue Jul 12, 2016 3:37 pm

Reading up on it, Looks like the spacer allows for 4mm more piston travel.

I'll start there
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Re: Timing thread

Postby spencerdiesel » Sat Nov 05, 2016 7:47 pm

I've been painstakingly fine tuning my driving habits lately to spend the least $ on my 80 mile daily round trip commute. Coasting down hills, keeping highway speed between 45 and 48 mph; I've been getting a hand calc'd 25-25.8 mpg on the highway.

Question being, with such light throttle loads and demands at low highway cruising speeds, will I see any gain from timing advance? I'm only turning 1600-1700 rpm at the speeds I'm going, but I'd like to think a bump would help?

Just can't think that it would because its low throttle & low engine speed and the fuel is *probably* being completely burned, wouldn't advance just push on the piston too soon and not be needed for low load?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

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 RCCUMMINS89 » Sat Nov 05, 2016 8:05 pm

In that particular situation, lower timing will yield better mpg.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: Timing thread

Postby spencerdiesel » Tue Mar 21, 2017 5:55 pm

A jaunt home on the beautiful blue ridge parkway left me with some more questions.

A few weeks ago (checking egt) I did a hard wot pull up a grade to 80 in 5th. I saw a slosh under 1400.
I have since been on harder and longer wot pulls with about 2k lb of firewood, in 5th but not able to go faster than 56 up a particular hill to check egt. I couldn't for the life of me get past 1300.

Main diff being on the 1400 run I topped out at 2900 rpm, and otherwise staying between 1700 & 2k (all is of course wot).

Is the 100 extra degrees at high rpm from to little advance and burning in the manifold?
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank

H1C/18

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