newbie looking for help
#11
yes i know this but my holset has a holset tag not a cummins tag on the turbo. it is differant then the one on my buddys 90 250 his has a cummins tag.
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so i guess i still have a "stock" turbo even though it was changed??
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so i guess i still have a "stock" turbo even though it was changed??
Last edited by coeboy; 09-18-2011 at 10:17 AM. Reason: Automerged Doublepost
#13
#14
#15
#16
i'd rather have her zooming than burning up tires. Holset made the turbos for cummins, my stock h1c on my 93' says holset too. I believe cummings bought them out. Get the guages, I bought a pyro and it changed my driving habits. I pull a horse trailer too. I would install the 3200 gov. spring before turning up the pump. These motors start to defuel at around 55 mph I think, the springs gives you a little more fuel on the top end. You could also turn your stock fuel pin to the deepest setting too.
#17
#18
Up, Down, In & Out, Fuel Flowing All Around...
Full boost occurs at the bottom of the pin travel. Removing the washer can actually limit full fuel if your boost level and spring tension combine in undesireable ways. Upward travel (limited by the washer you speak of) controls low boost fuel.
The trick to fuel cone tuning is to track the guide pin path and make small adjustments accordingly. The pumps can have different springs and along with different fuel cone profiles will give wildly different results depending on how they are set up.
The trick to fuel cone tuning is to track the guide pin path and make small adjustments accordingly. The pumps can have different springs and along with different fuel cone profiles will give wildly different results depending on how they are set up.
#19
#20
ok gauges are in. just got done reading the fuel pump sticky and i dont know what i need to do?? should i start here Low manifold pressure (boost) fuel delivery adjustment.
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or should i do all the sticky says??
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or should i do all the sticky says??
Last edited by coeboy; 09-29-2011 at 08:18 PM. Reason: Automerged Doublepost