Dodge Cummins Diesel Forum banner
1 - 6 of 6 Posts

·
Premium Member
Lower carbon footprint than electric vehicles
Joined
·
3,272 Posts
When you say the torque converter is slipping if you get on it at lower rpm locked in 3rd, are you sure it's not downshifting? Unless you have a lockup switch to keep the converter locked up and in gear you can't floor it, only about 90% throttle, if rpm's are below ~18-1900. Might want to look into wiring up a lockup switch. Could help you build torque being a 3rd gear run.
 

·
Premium Member
Lower carbon footprint than electric vehicles
Joined
·
3,272 Posts
If the rpm was flaring up a lot, like 2500+ probably was kicking down. If it was they were sliding up gradually then it was slippage.
 

·
Premium Member
Lower carbon footprint than electric vehicles
Joined
·
3,272 Posts
You're kind of mixed up on what he is saying. A hotter engine will make more power to achieve a complete burn but you want the incoming air to be as dense as possible. That's the reason for the ice. You don't want the engine as cool as possible, you just don't want it too hot to where it will pull fuel but just under.
 

·
Premium Member
Lower carbon footprint than electric vehicles
Joined
·
3,272 Posts
Mishimoto does agree. That why they have a 15°F higher than stock thermostat for cooler climates/quicker warmup and a 10°F lower than stock thermostat for warmer climates/heavy towing/extreme driving. Ideal engine coolant temp and ideal incoming air density are two completely different things.
 
  • Like
Reactions: Anabolic

·
Premium Member
Lower carbon footprint than electric vehicles
Joined
·
3,272 Posts
Yep, I'm sure they could try to make higher torque numbers, but they likely want the power to come in harder higher in the rpm so max torque isn't really geared towards that goal. You can have more pump stretch and make more torque at lower rpm but the more reasonable duration will make more power. Also even higher horsepower 6.7 people usually try to keep the low end tuning conservative often with quick spooling setups like compounds to save the bottom end from bending or breaking, and to keep the block from cracking, let alone the transmission shafts.
 

·
Premium Member
Lower carbon footprint than electric vehicles
Joined
·
3,272 Posts
You will likely have some major lag from a 69/73 over 80/96 setup on a VP44 truck. Hopefully the Scheid stage 2 pump will help that out but when you get those Infinite Performance injectors will give you the fuel to help it. Are you still running the single disc converter?
 
1 - 6 of 6 Posts
Top