Power Upgrades

[DAZ]

Fatcat and Holeshot



I thank-you for your advice. I am going to start with the plate and go from there. I like to build things that can go fast yet I seldom use all of it. I just like to know that if I need the power it is there. Case in point my other car is a 1967 Camaro with a slighty built 454. All my friends kid me because I take it very easy on it. Just like to know that if they laugh to loud I can just punch it. They stop laughing real quick at that point!!!



Want to do the same for my truck. Don't plan on using all the power most of the time, yet you never know when someone (PSD) will start laughing.

 

[Forrest]

Order up the #11 TAZ. You won't exceed your clutch & you can keep EGT in check. If you want more, you can get gutsy & slide it forward for another 120ft-lbs or so. :--)

 

[HoleshotHolset]

Laughing at PSD's is a daily thing for me... .



I saw a buddy of mine so I got my foot into the soot pedal and the PSD behind went into stealth mode... could barely see him through the smoke... .



When I pulled over at my mailbox, he decided that he'd floor it and "impress" me with his POS V-8 diesel..... there's nothing impressive about that thing at 3000rpm... . I almost died laughing while I pointed at his big sorry chunk of IH iron as it slowly drove away... .



Matt

 

[Joseph Donnelly]

The B was originally a 2300 rpm engine. As Cummins raised that limit, they found several problems. One was the nose of the camshaft with pressed on gear would crack off. They machined and shot peened the cam core behind #1 bearing journal on the 215 hp engines. On the high rpm marine engines they also used a bolt to secure the cam gear so it couldn't walk off the nose of the camshaft.



For these and other reasons, it is not a good idea to run high rpm for very long. Remember the forces on the connecting rod, etc. go up with rpm2 and the reciprocating parts are very heavy. The valve springs are not designed for high rpm, even the 60 psi springs. They help, but still don't have dampeners in them to quell harmonics. Valve train harmonics are another reason to keep rpm down.



I have checked fuel flow via pump stand and dyno and the horsepower drops as rpm goes up. By 3500 rpm power is significantly lower than in the 2000-2700 rpm range. There may be special cases due to extreme modifications, but simple changes like streetable injectors, torque plate, and governor spring kit do not raise the peak horsepower rpm to anything like 3500.



Old age and treachery overcome youth and enthusiasm.

 

[HoleshotHolset]

crap... . here I am thinking that I was getting somewhere with my youth and ethusiasm.



Matt - back to the drawing board.