pros and cons of full cuts

From what I have seen, Good results when hooked to a sled or drag raced, Also more CC's of fuel when pump is bench tested over other DV's. Very questionable results on dyno's.
 
I would have to say for a competition application there great, but on the dyno they may hurt you unless you can get it tuned so you can get the boost up and not overfuel before the turbo spools.
 
I have them in all of our trucks and i think and agree with these other guys about on a dyno they are not worth a ship unless you can drive your own truck. But like us pulling, we are revving to 4500+ rpm and are at max boost within 3ft so it dont bother us to have extra fuel on bottom end. Thats from a guy that dynoed 500cc pump, 2.8 charger and 20* timing did 380 horse with full cuts. LOL Tim
 
ILLINOISRAM said:
I have them in all of our trucks and i think and agree with these other guys about on a dyno they are not worth a ship unless you can drive your own truck. But like us pulling, we are revving to 4500+ rpm and are at max boost within 3ft so it dont bother us to have extra fuel on bottom end. Thats from a guy that dynoed 500cc pump, 2.8 charger and 20* timing did 380 horse with full cuts. LOL Tim
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my 550cc pump with full cuts, 26* timing, and a 2.6 charger did 631hp
 
with full cuts ran 1500 egt went back around pulled them out and put in a set of 181 same times and can get over 1200 in the 1/4
 
getblown5.9 said:
my 550cc pump with full cuts, 26* timing, and a 2.6 charger did 631hp
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My brother did 591 with a non benched pump, stock cam and lift pump and silver bullet. So you did 40 horse more with alot more stuff? I would say you should have done more too. I have seen your dyno runs and they look pretty good. I just dont think trucks like ours will ever truly dyno very good. When i had my truck on the dyno, they were riding the brakes so hard to get it to spool that they blew out my rear bake cylindars. Thanks alot, i had to fix that before i could drive home.LOL That is with a tuned afc with a plate setup by a diesel shop. I have never touched that pump. The guy running the dyno said i had way to much fuel. The big kick in the nuts was a guy with stock turbo, 5x14 injectors and stock tweaked pump did 450 horse. Tim
 
You can run full cuts and have them work well on a dyno, drag race, sled pull and daily drive if you set your pump up correctly. Full cuts are not the answer to all for fuel but at times they have there place.
 
i loved them in my 12mm pump. what about full cuts with 1000cc, who use them in 13mm pump pushing a lot of fuel how are they ?
 
you'll need a lot of air!

full cuts inject a lot of late fuel. If you're turning a lot of RPM and injecting early and have a lot of air to cover the fuel, that's great
 
richsdieselperf said:
i loved them in my 12mm pump. what about full cuts with 1000cc, who use them in 13mm pump pushing a lot of fuel how are they ?
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1000cc's through non-cut dv's is bottle-necking in my book...I know a few pump shops don't ever cut them, but in that case they have to be small shouldered and 8mm to come close in my opinion...


and what are you using 1000cc's for? :poke:
 
My never removed 160 made better power on diesel only with the stock 131's than 181's or full cuts.. It's currently around 650 at the wheels.. The larger ones made more smoke and heat..
 
I'll prob. end up trying them again since ive gotten another 300/350 CFM of air since then, but the temps were so unresonable that I didnt give them a chance very long. Most things have "thier" place and "If" full cuts even have a place, its on a high rpm, high load, application with tons of air and even nitrous if rules allow. They have absolutly no place on the street period, unless your into tons of un ness. smoke and heat. Ive liked 191's the best so far for what im doing but would say 181's would be hard to beat for any street truck or even racer up to maybe the 600hp range. Just what ive found....
Ryan
 
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