ive found a inline 4 vibrates side to side.
where a inline 3 vibrates front to rear.
are little tractor eats up the splines on the clutch disc if you let it sit and idel a lot. using 1,000rpms as idle, makes the splines last a few hundred hours more.
are old 76 ford 300-6 is a engine that was originally thought up back in 1965 or so and its spooky smooth. for a old farm truck.
that is until the EGR fouls a plug or two.....
unlike a modern EGR its truly just a tube, no control at all on it.
__________________
1 86 T\D trooper with rare GEN 3 rods
TRANS FIXED 
NOW DD
1 86 4WD 5sp pup is 2.3L gas, but plan on 2.2L diesel repower
1 91 trop, long term plan is a group buy of imported Isuzu 4JB1-T 2.8L I-4 engines, hoping to get price down to 2K not 3K plus
1993 sidekick my MPG toy, epa rating 26.
i get 29/31 with stock drive train.