235 with 2x1 intake, fentons and 2" pipes with 22" smithys under the cab and turn downs before the rear tires.
I noticed when warming up, the rear of my 235 always seems hotter than the front.
The rear header's pipe and exhaust is hotter and the rear carb also feels hotter.
I thought after complete warm-up and some driving the temp across the cylinders would equalize but never checked it.
Then last week, a friend who used to build harleys and hot rods, told me straight 6s always have hotter rear cylinders even when fully warmed up and running.
- I wonder how hot straight 8s must get back there?
Also explains why the temp sender is in the top rear, I guess.
To get better fuel economy and performance, shall I bother experimenting with....
* a smaller jet for the front carb (or larger on the rear)
* cooler spark plugs at least on cylinder 5 and 6, maybe even 4
* 1/8 - 1/4" smaller diameter exhaust pipe for front cylinders 1-3
I got hydraulic lifters on this one, but go with solids on my next project.
* With solid lifters should one compensate lash for rear valves and maybe even have the rear cam lobes also grind to compensate - how much, if at all?
I'm curious what more experience inliners think and if tweaking would make a difference or just create problems and a loss of time and funds.
Thanks!
