SMALL pump breaks 400HP barrier

[cumminsgetme]

Several people talk about the smaller pumps being limited to 400HP or even a little under. Today some friends and I dyno'd in Houston on a Dyno Jet 248. I was able to milk 423. 3 HP out of my "little" 175 pump. I hope to push my pump further and further, extending these limits (there's got to be just a little more left in her) . If anyone else has dyno'd big numbers with the small pump, I would definately like to hear about it.

 

[BigYellowIron]

that kicks @$$!! I'm still on my way to over 400 with my little 160hp pump. It can be done.



Adam

 

[azgearpro]

cumminsgetme, if you dont mind me asking what mods have you done to your pump to get those numbers? I would like to get to that hp range with my 180hp pump. Thanks for your input.

 

[sewman]

That sounds great!!How were your egt's??I can't wait to dyno mine someday either.

Bob

 

[Strick-9]

azgearpro,



You can see by his signature that he has a TST #4 and 191 delivery valves. The rest is censored. hehe.



His pump isn't even maxed out yet. He has a few mods that will help him get more fuel that he hasn't tried yet. Not enough time.



-Chris

 

[DBR]

Way to go!

cumminsgetme



Nice job on the dyno numbers! Sound like your little pump is no longer little. I'm curious as well what were your EGTS?

 

[Shrimpy]

Excellent numbers Cummins... What was your peak torque for that H. P. I also have one of the "small" pumps and you have obviously done your homework well. Good to know someone with-in a hours drive of me knows a thing or two about these pumps. Good luck and keep us up to date on any more great numbers.



P. S. "Small PUMPS Rule"

 

[MDW]

Don't forget fellas, he has the #4 plate out of the Texas Red Rocket, Thats the secret hehe



Congrats, Cord

Thats WAY kool

 

[cumminsgetme]

Do you really want to know how hot she runs . I have a DiPricol guage that reads up to 1500 deg and I tend to peg it pretty regular when racing. I try not to hold those temperatures very long, but what can you do... ... back out of the throttle..... not a chance . So, as far as peak temperature goes, it's at least 1500deg. I was not able to get a torque reading from the dyno and I haven't had a chance to calculate it yet. I'll let ya'll know when I do. If anyone wants to see graphs of my run I can post a link. Most "little" pumps tend make peak HP then break, and decline very rapidly. I was real pleased with how long the truck held substantial power. Around 106MPH it begins losing power pretty quick, however, this is also in the same RPM range that I get the agressive popping due to the plungers and cam profile.

 

[Sled Puller]

Are those SAE hp numbers or standard?



gene

 

[dieselburner]

Originally posted by cumminsgetme

Do you really want to know how hot she runs . I have a DiPricol guage that reads up to 1500 deg and I tend to peg it pretty regular when racing. I try not to hold those temperatures very long, but what can you do... ... back out of the throttle..... not a chance . So, as far as peak temperature goes, it's at least 1500deg. I was not able to get a torque reading from the dyno and I haven't had a chance to calculate it yet. I'll let ya'll know when I do. If anyone wants to see graphs of my run I can post a link. Most "little" pumps tend make peak HP then break, and decline very rapidly. I was real pleased with how long the truck held substantial power. Around 106MPH it begins losing power pretty quick, however, this is also in the same RPM range that I get the agressive popping due to the plungers and cam profile.

I have been told that I have a hybrid pump with the small plungers and barrels but with the "good" cam. I don't have any popping at high speed and have pulled 3000 rpm in overdrive several times with LOTS of pedal left. With correction for the tires that's around 108mph. I have not yet got any info back from Piers about just what all of the differences are between this pump and the 215 but it does run real good. I wonder what it would do with a set of bigger plungers installed and if that is the only change that I would need to get the same performance out of this pump that the 215's are getting?

 

[Cummins Corvette]

That would really suck if it broke eh? Then you would have to get a 913 pump, shucks.

 

[cumminsgetme]

MGM,

That's SAE Horsepower.

 

[Deezul1]

That truck runs to good for 423 hp, you must of broke the dyno, feels like at least 500hp to me. Great results whats next?

 

[HoleshotHolset]

cumminsgetme,



Excellent work!

I expect to see a complete parts list and rundown off all the tweaks in a full report on my desk by tomorrow morning.....



Matt

 

[cumminsgetme]

Thanks Deezul1. What's next???... ... . shooting for 550 on #2, but I don't think I'll get there with this pump , however I still have a few tricks up my sleeve and would love to get her to the 450 mark when I dyno on the 15th in Nevada. We'll see, as long as I can beat 423 I'll be happy.