WHAT'S THE DIFFERENCE BEWTEEN A 4 CYL AND 6CYL FRAME?

JERSEYJOE

CAN ANYONE TELL ME THE DIFFERENCE ( IF ANY ) BETWEEN A 4 CYL AND 6 CYL YJ FRAME. IF THERE IS A DIFFERENCE HOW DO I TELL THEM APART?

tufcj

I'm not positive, but I think the 4 cyl motor mounts are welded, the 6 cyl are bolted on. Other than that, they should be identical. Bob tufcj

JERSEYJOE

ANYONE KNOW FOR SURE? I HAVE A VERY CLEAN YJ FRAME OF UNKNOWN ORIGIN AND A BUDDY NEEDS A 6 CYL FRAME. BEFORE I GIVE IT TO HIM AND HE GOES THROUGH ALL THE WORK I WANT TO MAKE SURE IT IS THE RIGHT ONE. HE IS THE ONE THAT TOLD ME THEY WERE DIFFERENT. SINCE YJ'S ARE OUT OF MY AREA I DO NOT KNOW. I STRICKLY DABBLE IN CJ'S.

mika01

I've had both frames and the only difference I'm aware of is that the motor mounts on both are welded in different spots on the frame. Also if you have the 87-90 4.2 frame it does not have the fuel filter plate at the rear of the driver side frame rail.

Mudrat

JERSEY!!! Quit shouting. :shock: Use lower case for "normal" conversation!!

JERSEYJOE wrote
ANYONE KNOW FOR SURE? I HAVE A VERY CLEAN YJ FRAME OF UNKNOWN ORIGIN AND A BUDDY NEEDS A 6 CYL FRAME. BEFORE I GIVE IT TO HIM AND HE GOES THROUGH ALL THE WORK I WANT TO MAKE SURE IT IS THE RIGHT ONE. HE IS THE ONE THAT TOLD ME THEY WERE DIFFERENT. SINCE YJ'S ARE OUT OF MY AREA I DO NOT KNOW. I STRICKLY DABBLE IN CJ'S.

All my CJ's and the current YJ frames are bolted. Not sure I've ever seen the ears of a motor mount welded in a Jeep (unless it was a trail repair) 111!!!

'Rat

jeepsr4ever

Very subtle differences..motor mounts are welded in a 4cyl and a couple other small differences. These should be overlooked when you need a new frame. Mounts are cheaper than a frame.