4.0L HO Jeep Engine Build

memike said
I have owned 3 4.0 in line 6 jeeps and all the mud and rock climbing folk here in Arkansas swear by them :cheers: And it is amazing the the mileage that can be put on them, our mail carriers drive these in line sixes 8 out of ten 8) If a Jeep finds it's way back in my life before a Ramcharger I am shopping for the in line 4.0 is a must have.:read2:
It's great to see another helpful thread you have started Joe :cheers:
The snow is gone here know But it is wet and nasty outside I am glad I live on a hill and rookie ground :-D I can't wait to see how much energy this build will make :cheers:

Glad to here you are at normal running temperature Joe :happy10:

My head still feels congested but I'm feeling much better now. :) Like you say, these really are great engines and worthy of a decent rebuild Mike. I'm hoping for an honest, reliable 200+ hp out of this build.

'64 Cuda said
I was more interested just for the sake of knowing. I guess it's just that the girdle doesn't look like much compared to the one I bought to use in my 408. My completely rebuilt 4.2 has been finished for at least a couple of years & sitting on the engine stand while I keep nursing along the car with the engine it has now. Still need to iron out a few things to make the EFI work in my '86 car. Meanwhile, the other mechanicals on the car have me busy just trying to keep the thing on the road. :-D

No, it's not as stout as the girdle you would see from Hughes Engines for a LA/Magnum engine for example, but it is a factory piece. :) Then again, it won't be a 500hp monster either and for a free upgrade, I figured I'd take it. :-D I believe the engineers designed it more to reduce NVH than to add strength as there were no previous problems with main caps or webs breaking or cracking. Since this is a really long engine, I'm thinking more of a torsoninal rigidity issue and that it may reduce those vibrations rather than eliminate cap walk/rock like a V-8 girdle should do. Note that it only ties the caps together along the length of the engine rather than tie the caps to the block and each other like a V-8 girdle does.

OK, this is as far as I've gone so no more until get the block back to DCR or finish up the porting. :)