Competition Pulling
- Thread starter T800
- Start date
I think the solid axle has some to do with it also. I know when I went to bg last year the cummins killer didn't do so hot. But that truck has had a few good pulls and is set up nicely.
Cummins have been in the game a lot longer than a duramax. Still a lot of learning, building and developing things, not to mention the cost to get the shit. I'd imagine a cummins is a fair amount cheaper in any class, especially the lower classes.
A p pump cummins gets the trickle down effect from tractor pulling. And common rail diesels are just now catching up in the fuel injection rate capabilities, at the expense of your wallet. Also, in the cummins world, there are a few shops that will sell you turn key motors that will make enough power to win your class at any event, all you have to do is write the check.(big one)
Theres quite a few competitive 2.6 Dmaxs in my neck of the woods. The Cummins is cheaper to build and easier to make power with like Isaac said, due to the same basic platform being used for years in tractors. Not to mention the fact that a stock bottom end Cummins will last way longer than the v8 counterparts.
Those Haisley motors do sound sweet at 6k rpm though!
Those Haisley motors do sound sweet at 6k rpm though!
A lot of the rules and specs favor the Cummins trucks. Like said above. Cummins has been around for 10 years longer. Look at where we have got it the last 10 years. Around here the Duramaxs have been winning a lot.
It does come down to mechanical injection IMO, duramaxes on a 3.0 and 2.6 level drive a turbo harder than most of the Cummins stuff, the electronics and common rail stuff adds more complication... When Brad Ingram was running 3.0 I believe his standalone common rail made more power, but was broke every few hooks or causing issues, so they had a mechanical engine setup and swapped out half the time...
Within as close to an apples to apples comparison as you can do of an I6 vs V8, at the top of the game, it's not much, if any, cheaper to build a top running cummins and a driveline to hold it compared to a duramax.
I think they're still at the top because there's so many building them that they're able to learn and progress faster than the few who are building the duramax to that level. And they have about mastered their fuel system whereas the duramax shops/minds are just now getting to really push the CR system to that upper 3.0 level. I think the CR fuel system is there for 2.6. Even the CR cummins is becoming more and more competitive all the time.
I think they're still at the top because there's so many building them that they're able to learn and progress faster than the few who are building the duramax to that level. And they have about mastered their fuel system whereas the duramax shops/minds are just now getting to really push the CR system to that upper 3.0 level. I think the CR fuel system is there for 2.6. Even the CR cummins is becoming more and more competitive all the time.
Like has been previously stated. It comes down to rate of injection. We have more ci and much better heads,yet still lag behind. The only difference is the injection system. Once we can match the mechanical injection rate and flow things will start to swing in the common rails favor.