cr8zxjguy

what all can you do to this engine to make perform better? i dont need serious power i just need enough to get up to speed!! i got a 87 xj with like 2xx,xxx miles mabey i need a rebuild or a motor with less milege?

alpine.adrenaline

I have the same engine. Start by removing that heavy stock fan and put in an electric fan that only comes on when your XJ gets hot. Add a free-flowing air intake to your throttle body and get a decent coil and distributor. Most of the power from one of these Renix engines can be harnessed by just getting it well tuned.

Also check out 4bangerjp.com, you might be able to find some helpful stuff there.

ZachsXJ

Swap it out for a Dodge 318 magnum small block.

alpine.adrenaline

That's all anyone ever says; swap it out for something else. Those 4 squirrels have done just fine in my bay.

ZachsXJ

...because they're not really worth putting serious money into. Either leave them stock or replace them.
I'm not going to give him advice to throw hundreds of dollars into an engine and get minimal power gains at best

alpine.adrenaline

There's not a lot of aftermarket stuff for the Renix 4 banger, cr8zxjguy. But if you tune it well, don't need to tow anything, and don't mind being a little slow from the stop light (or replacing your clutch every two years), it'll do great offroad and is a lot easier to work on than the cluttered bay of an inline 6. IMO. I like the $20.00 refuels too.

BeepBeepImaJeep

get a 4.6 stroker from mopar lol, with that many milesanyways i would just find a 4.0.

ZachsXJ

or a Dodge 318. You might as well considering that you have to swap the transmission along with the engine and all the electronics anyways.

BeepBeepImaJeep

or....a 401!

cr8zxjguy

thanks for the advice but i agree with alpine i dont want or need a small block v-ocho!!! plus thats a heck of a cost. money i really can use on something else like a little lift!!! its not like i need to get off and push!! just want a little more power. Its really great on gas for a 20 something year old suv!!! just like alpine said 20 dollar fill up! my 92 s10 4 banger 2wd gets wrose gas milage. i will try a electro fan they have one at summit for 150 bucks!! already did a complete tune up plugs, wires,cap, rotor, fuel filter. need to get new coil! made a good difference! so thanks alpine and nice to see your a fellow coloraden!!

ZachsXJ

thats a rip-off. get a Taurus fan from the JY or somewhere for all of like $50 tops

maverickdan

find a turbo in a junkyard bolt it on make your own charge tubes and reprogram your computor and thats like 75 hp right there

cr8zxjguy

yeah thanks a used electro fan thats a good idea!!! turbo huh?? yeah i don't know? does anbody know if the 4 speed manual is a direct replacement with the 5 speed???

JeepCoMJ

yes, the 4 speed ax4 is a direct replacement for the 5 speed ax5, so long as you're swapping a 4x4 trans for 4x4 or 2x4 for 2x4...I have no idea why you would want to swap to a 4 speed, it would SUCK to drive if it's already got 4.10 gears from factory like it should.

neither of those trans can go behind a 4.0.

cr8zxjguy

ha ha no i meant 4 to 5 i got that 4 and im so used to 5 in my s10 that when im on the high way i always try to find that last gear and nada lol i can get one at junk yard for way cheep would i need the bell housing changed or will the 4 speed bell housing work with the 5 speed?