Halfton 12 valve mods.

VMAX said:
Truck had a 180 degree thermostat. I added the napa 195 degree super stat a few minutes ago. The 180 would get to a peak temp of 195. The 195 gets to a peak temp of 200. Guess the wax filiment was off on the 180. Glad i didnt waste money on some high temp coolant.
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So I assume your just running normal coolant?
 
Yea the boiling point of most coolant is 285 mixed at 75% coolant. I filled 100% coolant. Truck runs about 210 now. Motor seems to idle smoother at higher temp.
 
wonder what the compression ratio of that engine is. you might want to check it. With a lower compression would cause it to run a little rougher at cooler engine temps. A lower compression also would mean a little less on the fuel mileage end.
 
Truck has PN 3802170 cummins Industrial pistons. Big bowl design so ratio is lower but your guess is as good as mine to where it is at.
 
Drove 210 miles 70% highway, 30% city managed 25mpg. Topped off at same pump after the 3 little road trips.

Westons injectors are on the way. Hoping for a good bump as they say.
 
I put Westoms 5x.014 in today. Looks like number one injector I pulled out has had better days.

1361031649652.jpg


Check out the new injector tool. Got it off of EBAY, highly recomended.

20130216_102055.jpg


Looks like truck has 131 DVS in it.

20130216_110011.jpg
 
VMAX said:
I think you are too far north in texas to be a southie. If you cant get to shoreline in under 2 hours doing the speed limit your a central texan lol.
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I grew up 30 minutes north of Houston. That fits into your two hour rule!
 
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VMAX said:
I put Westoms 5x.014 in today. Looks like number one injector I pulled out has had better days.

1361031649652.jpg


Check out the new injector tool. Got it off of EBAY, highly recomended.

20130216_102055.jpg


Looks like truck has 131 DVS in it.

20130216_110011.jpg
Click to expand...

Stock 181's are really hard to beat but I have never tried any of his! A 5x14 is probably the best overall injector around, no reason it will not get really good performance and mileage!

Jim
 
Looks like #1 injector copper washer seal failed and was leaking combustion gasses up around the injector. Sometimes a really bad crack in the head can cause this but 95% of the time I see this, it's a failed copper washer and usually a thin one. The stock 0.060" thick washers seem to seal better than the thin ones.
 
Big Blue24 said:
Looks like #1 injector copper washer seal failed and was leaking combustion gasses up around the injector. Sometimes a really bad crack in the head can cause this but 95% of the time I see this, it's a failed copper washer and usually a thin one. The stock 0.060" thick washers seem to seal better than the thin ones.
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This makes sense but dont you usually get fuel dripping out from the lock nut when the washer fails?
 
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