Newcomer test Solid Flat Tappet Vs. Hyd Roller.......

[Straubtech]

https://www.youtube.com/watch?v=KM5n9Y5M0Ak

[Straubtech]

https://www.enginelabs.com/tech-stories ... -the-dyno/

[Cheromaniac]

Pretty awesome stuff but at what cost?
A 5.3 LS swap might be a more economical route to 350+hp with room to grow, but Jeep I6 diehards may not care about that.

[Straubtech]

Last year one of the 2 production cam grinders stopped selling semi finished and finished cast cores from the US supplier because their QC process was failing over 90% of the cores they were getting. The flat tappet cast core supply for vintage engines has come to same result as the phone booth. Modern technology has passed it by.

So the cost is what it is if you want to stay with the inline 6. The engine is pretty much bullet proof. With new roller valvetrain it will be even more bullet proof.

Good things are in the future for the Inline tribes.

Chris

[Gorilla]

Pretty awesome stuff but at what cost?
A 5.3 LS swap might be a more economical route to 350+hp with room to grow, but Jeep I6 diehards may not care about that.

I wouldn't describe myself as an I-6 diehard, or even a Jeep/Mopar diehard at all. If anything I'd say I'm a flat 6 (boxer) diehard. I have priced out what I want to build for my purpose with Newcomer. It's expensive and I think it will land close but won't hit LS numbers. It also won't be that much different from an LS swap in cost. It will be a hell of alot cheaper than buying a new offroader to get that sort of power though.

My main reason for sticking with the I-6 platform is that I want to keep my jeep as stock-like as I can so that if I needed to take it into a shop while remote and not in my own garage, they'll be able to work on it like a regular TJ. I live in an area with emissions testing and while we don't do the whole CARB visual inspection here, we switched over to following CARB with regards to emissions equipment. I know I can do an LS swap legally in a TJ, I just think life will be simpler with the I6 stoker. Insurance, inspection, sale if a time came when needed. And it will have plenty of power for what I want mine to do.

If I really want to go fast our other 2 cars are far better for the job. I need the jeep to be reliable for a 12 hour drive in remote places and it needs more power to keep up with modern traffic.