omega_rugal

a little larger pipe won`t hurt, maybe porting the exhaust a bit, if there`s anythign left to be ported that is, while the header is down, why not...

they weren`t popular here (weird he?) you don`t see many around not even in junkyards, maybe most were exported, the old FSJ i wanted to buy and a working green one are the only ones i have seen, not even the old full size cherokees the few ones you see are 1 step away to be scrapped, and 90% of the time are V8s now that you mention headers, are the renix era exhausts optimal or is there some extra power to be had there? because the exhaust pipes in my MJ are rather rusty and they gonna fall apart some time soon and i was planning that when the time comes, put a larger pipe, shorter one that exists just behind the drivers side door, no point in going all the way back of the truck, or maybe a vertical exahust, serves no purpose but looks cool...

my only concern when it comes to swapping a used cam is how much wear it may have, in here people trash the engines by not changing the oil or things like that, so cars end up in the junkyard mostly because the engine is deader than dead...also the chances of finding a good RV cam on a lpg truck in here are slim, people just thow in the lpg system, advance the timing and call it a day (kinda like me) about the 238 crank, there was a 3.8 inline 6 made, but it was discontinued back in late 70`s or so i read...

this guy makes it look easy, ok he`s fixing a warped head but counts as shaving it, you are removing material from it so you are doing the very same thing, it may take forever but it will be fun...

the MJ has a piece of crap made by an unknown mexican company called Lamsa, on demand type system, made for carburators so i had to make a small adaptor so it fits a renix TB the ZJ has a more respectable Impco 300 but the mixer i got with it was also for carburated engines so i made a custom mixer that plugs to the HO TB a 232 crankshaft with stock 4.0 rods and 4.0 pìstons? that`s affordable of course i got the idea, use the thinnest head gasket AND shaving off some 0.000 of inch, with that in mind what about the pushrods? if i leave them stock wouldn`t the valves touch the pistons? or may even have the side effect of more valve duration?

way beyond my budget, i could buy a complete engine with the cost of a custom camshaft in here

so the head gasket alone can raise it to an hypotethical 9.78:1? interesting, anything above 9 is fine, after all, the crappy LPG i get in my country is like a 50/50 mix of propane and butane and that lowers the octane number a bit... i found this good point, LPG mixes well with air, quench is not as critical as when running on gasoline shaving some 0.000 of an inch off the head plus a thinner gasket got to make some change in static CR... but with stock rods it will raise the time of valve opening/closing so less dinamic CR... so i have to shorten those too?... then the camshaft profile, too many variables... oh and i forgot to mention, i prefer low end torque over max HPs

yeah i saw the article about strokers, they even mention a special lpg setup with 11:1 compression (pure propane), without all the trouble that comes with the stroking process (better fuel pump, larger inyectors, ECU tweaks) so that option is not discarded in the future... new pistons...

i though you only shaved the head a little and put it back... not building a stroker here...

changing pistons involves dissasembling nearly the entire engine, maybe as part as a rebuild job... but milling the head? that sounds like an easy, more straight forward way to gain some compression... how about using a thinner gasket?

As some of you know, for the last 3 months or so my 88 MJ renix has been running cleanly on LPG, the oil is cleaner than ever (still has a clear reddish color), based on rough calculations i estimate a fuel economy around 20-21 MPG which is great considering that on gas it averaged 18-19, i`m running it as lean as possible with a 10%-15% power loss penalty but still drives great. today i completed on the basic install on the 95 ZJ HO, using an impco 300 reducer and a custom mixer, it starts and runs flawlessly, even better than the MJ :-( now that both will run on LPG i was wondering how to gte some of the power back by raising the compression, lets say from 8.8:1 to 10:1, of course i want to start with basic mods to do so... any ideas are welcome

i though the 2-1 position was just 1 notch... i wonder if theres some manual valve "mod" to have the full OD-D-2-1 gear set using only the shift lever...

update: is gone, the guy raised his price wayy too much, someone must have tipped him about it or got a better offer... i`m seriusly considering getting a beaten up wagoneer and cut her up to make a gladiator...

As master Yoda would say "use the CLUTCH luke, use the CLUTCH" seriously how come many of you eat the transmissions that fast? i have never break a tranny...

there are a lot of XJs in the junkyards that can have a tranny with a some miles left...

why 86? some parts will be difficult to get, besides if you want power, get the I6 4.0, the 2.5l is a good engine but its big brother leaves it in the dust...

yes...

check and replace all those wires first...

it the pic is not very noticeable but there`s a visor...

finally the door was open yeah it`s too small, taken from far outside, you can see the lack of grill, four holes for lights that hint to a pre 70 era but i have seen full width grills on top of those so not conclussive another clue: front diff drops to the drivers side... and leafs are below the axles...so it`s more close to an 80`s model?

or they can just swap to another truck native V8 entirely...

Stroke thaT 4.0

Yes I have done that. Would that affect 4th gear though? maybe it`s not "slipping"more like it`s kicking down to 3rd gear as soon as it shifts to 4th... anyway if shifting manually is ok then the TCU is the culprit...

i would like to make something like a rhino grill, the later grills meh... the owner is not home, but i`ll see if i can take a pic from outside, it`s a private property...

no, it has no lights and i can see the radiator...