Cummin engine are so fun to drive despite their standard clutch in Asia we modified it to Nissan clutch so it's more than powerful the of original I have experienced it

Personally, i found that changing the button was much more noticeable than turning that screw out.

thanks for the vid, how much time can i turn that screw, and what is the max hp power gain from doing this because i have a cummins ntc400 and i want a lil more juice to Bruce...

the button gives it the pull power blue spring with 6 or 7 shims is a good rpm setting for 2300 to 2400 rpm which is fine for a cummins ... no lower then a 20 button unless u plan on driving ur own truck and don't put more then 1 and a half turns of rail pressure on that screw u will burn a hole in a piston when u see black smoke it's burning the piston let it breath taking off don't floor it after that then u can let it do what it's gone do but she will still get hot keep ur Pyro below 750 degrees u can let it get that hot for spurts but never hold it there for any motor period

@wyattlarrick3246

4 жыл бұрын

Exceeding 1000°F is when you enter the danger zone of EGTs.

How many turns did you do? I just put a #20 in.

Tip for young players, make a drill guide, a bit of steel about 1/2" thick drill a 1/8" or so hole right thru then a hole the dia of shaft 1/3 to 1/2 way thru, slip this over shaft then drill thru hole this will hold centred on convex plug and a lot less drill breakage

Drilled it out turned screw an now have no throttle shaft turns still nothing idles fine?

What does the button do for instance if I get a 40 versus a 7 button or a double 00

what does the button do if that screw raises the fuel pressure also what are good springs to use and button combination for pulling heavy loads 90k big cam 400

@MVPartStore

8 жыл бұрын

+Sho Time, The screw raises the fuel flow and the button raises the pressure. I'm fine with giving advice on the 250 used in military trucks but when it comes to a 400 big cam in a commercial application I strongly suggest having a qualified shop rebuild the pump for your specific application. That being said if you still want to proceed on your own..... Remove your current button and look for the number etched on the side. Then drop it by 7 to 10 to start seeing noticeable results. Again I can't stress enough that I really think in a commercial application you would be much better served using a professional service.

@shotime8699

8 жыл бұрын

10_4 thanks

@leifkeskevaari5898

7 жыл бұрын

they both raise fuel pressure.

If you pull that lid back above that screw there’s a bolt that you can also move and does something to the fuel does anyone know the guy at Cummins moved mine and black smoke comes out now exhaust

@theperson185

2 жыл бұрын

Its a preboost fuel screw, be careful

You could just grind it down so that the rim holding the ball in is no longer there.

@harryscott5226

2 жыл бұрын

then you can’t get the throttle arm on

Really? Are you sure, I'm dealing Within a bigcam nta

porque no lo hablan en español latino.

porque no lo hablan en español latino.