[THEFERMANATOR]

Originally Posted by Destroyer

Hmmm... Don't know what to tell you. It's funny, because my brother Dave has a Jeep, (Safari edition) with a 4.0L engine in it that I've worked on many times, and I know it has a carb on it. We changed the combo intake/exhaust manifold gasket just before winter last year because he had an exhaust leak. As to my neighbor, since I've never looked at the engine I'm only telling you what he told me, and he told me that he has a 4.0L with a carb. And I can attest that every winter now for the 4 years he's lived next door to me he grinds that thing for about a minute, pumping it etc, until it starts. And I just put my key in my Cherokee and it starts instantly.

I think your confusing the 258 with the 4.0L. The 258 was used up to 90 in the WRANGLERS, but it was a 4.2L engine. On the outside it looks just like a 4.0L, but uses a 1/2" longer stroke crank, and I think it's a 1/4" smaller bore internally. It gets confusng because the 4.0L came out in 87 for the CHEROKEE, COMANCHE, and WAGONEER. But the WRANGLER kept the older 4.2L engine until 90, then starting in 91 they went to the 4.0L in the WRANGLER. The other thing that really throws people is the fact that the 258 used a plastic valve cover, and the 4.0L used an aluminum one, BUT the 258 4.2L used in the 87-90 WRANGLERS had an aluminum valve cover. I can assure you they never made a 4.0L 242 cubic inch engine with a carb as the 4.0L camshaft never got cast with a fuel pump lobe, and the 4.0L blocks never got cast with a fuel pump boss whereas the 258 4.2L got both. And there is no factory intake to match up to ANY 4.0L cylinder head(258's had a slightly different cyclinder head port heaight, but uses the same bolt pattern).