Holy Boost Batman!

[MWehmeyer]

Just replaced my stock baby H1C with a modified unit - direct bolt in but 16cm turbo and 58 wheel - man what a difference No more discernable spool up lag, 22# boost where I was only getting 12 before, EGTs down about 200 degrees, etc.



So what's next? I've looked at a lot of threads about pump tweaks and I'm really confused



The sticky on performance says:

Modest adjustments of the injection pump. These are generally the "free" power enhancements that are fairly easy to make. They should be done in a methodical manner to assure the desired results. Generally they can all be done by the owner with a few simple hand tools and a small amount of time.

OK, so what are these modest adjustments - looking for some more HP but don't want to hurt mileage or EGT too bad.



Also - pump timing is stock and I know that to increase it you have to turn the head of the pump up - do you just loosen the bolts and move it or do you have to do the TDC thing?



TIA

 

[Greenleaf]

If you are ANYWHERE near the midwest it would pay dividens to drive to Peru IN on the weekend of October 7th.

 

[MWehmeyer]

Wish I could - on the left coast - Vancouver, WA

 

[PToombs]

Left coast is close enough! Loosen the fuel lines, loosen the pump nuts, then turn up almost 1/8 of an inch. Tighten everything, and run that puppy!

 

[MWehmeyer]

Pete,



Was just reading a thread where DPucket said:

From what I've read on here, it probably wouldnt hurt to go to 1. 5-1. 6mm or even a little higher, as the higher pop pressure of the PODs effectively retard the timing. But, I'd only do it if you are getting the bluish smoke, have some lag, or other lackluster performance issues. (Poor MPGs with your foot to the floor dont count. ) The nonIC engines are timed a little over IC (1. 40mm vs 1. 25mm), but still a hair lower than "ideal" IMO. BTW- going from 1. 4mm to 1. 6mm was about 1/32" on my pickup, if that. 1/8" got me around 2. 05mm. Your results may vary

My engine started life as a Non-IC and the timing marks are lined up so I'm assuming stock. Am I correct then in going about a 1/32 or so rather than an 1/8th? Sounds like a small distance nets a large change.



Mike

 

[PToombs]

Look real close around the pump nuts to see if they have been disturbed. 1/32 is better than too much. The really accurate way is the spill port method with a dial indicator in the pump, hence the 1. 40mm reading.