So at what degree of timing does the low end grunt becomes reduced? I was thinking about advancing my timing to about 22* but what concerned with the daily driving and the towing end of the deal. Also how long does it take you guys to set timing. I am considering buying a timing kit and curious to know how hard it it?

 

A marine head gasket only lowers compression half a point so its really not that noticable. (except cold starts in the winter)

wild man with a 0 plate and 435's 22* would run good and help you utilize a little more of your fuel.

 

How many cc's of fuel will the built pump put out with 12 mm plungers? That is the setup I would like to put in my truck so it is still drivable but will get the fuel in with long duration. You have almost the same setup as mine and around 1300 is all I can get out of it. In valet with 40lbs. of boost it will get to 1100 grossing 24000. What is your boost?

 

Not sure who you are asking this question of. I've had my pump off and recalibrated. With the #100, 3K GSK, 191 DV's and the barrels turned up it would put out 433 cc's at 18 mm rack travel. Past that rack travel it would start to defuel. Since then I have put in the laser cuts and was told that I would probably get 60+ HP more, so not sure what it would do. I'm not sure what you mean by the 1300 and 1100 numbers. Are these EGT's? I'm not sure that I can go much more on the pump without changing to 13 mm plungers and then it's $$$. Hope this helps. I'd like to hear where others are at for fuel as well.

Paul

 

I thought maybe you had a fast cam put in it, that is what I was referring to. The numbers are exhaust temps which kinda tell you what you are doing with the air/fuel mixture. I have stock dv's with 370 injectors but I hope to put a set of good decent size injectors in this winter. I'm thinking of a good pump to but not sure to old 270,000 mile motor will like much more power. It's a vicious cycle!

 

my pump with 4k's 10 plate and full cut dv's made 465cc's at 17mm rack travel. I have since cut the 10 to a 100. The pump is set to make 600cc's with no plate at 21mm of travel, but a 913 retards fuel timing with that much rack travel

 

Wana12:

Great numbers to compare to. I had 1 mm more rack travel but smaller DV's and the difference was about 30 cc's of fuel. Since that calibration I added the laser cuts which I have been told should produce at least 60 more HP which should = 60 cc's more. That should put me at about 490+ cc's fuel. I hadn't heard about the max capability of the pump but it sounds like I can squeeze a little more out with some extra rack travel.

Gwhammy:

for boost I have the gate at 40 psi and haven't seen over 1200 temps yet, but haven't really pushed it. Before with the 62/12 it would spike bad to >1500 if I let it. I'm really getting to like the 64/14 and feel that now I can add a bit more fuel. I'm still trying to gather some more numbers of boost and temps.

Paul

 

my cut dv's make 120cc's more than 181's so your pump is prolly over 500cc's