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Thread: Engine/axle upgrades

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    Engine/axle upgrades

    Hey I was just wondering what are some engine upgrades are good to add . Engine hasn't been modified yet, also I was wondering what's a good set of axles to run this is for a 06 tj.

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    What are your goals for the build? Tire size and horsepower numbers are a good start.
    The OG HOISTWAGON
    99 XJ, CT Motorsports built, Tons, 37" MTR/Ks, TMR 3-link and Beadlocks, CrewFab Cage and Bumpers, PSC full hydro

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    Well right now it has 6in tear flex long arm lift and 35's and the gearing system is changed to Yukon 4.88 plus other stuff

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    I'm just wondering how much hp u can add before you have to look into transmission

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    I like my JK axles but I don't plan to go larger then 37s and I have no real plans for more horse power. If you plan to go big then start looking at 60s or a 60/14 bolt the options are endless and depend on where you want to get to.
    2010 JK Unlimited Sahara, rubi axles, 35" duratracs, OME lift: Written off, RIP.
    2006 LJ Rubicon Lots of stuff from TMR installed by CT Motorsports (see profile if you want to know) project once more with feeling
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    Well I'm not sure if I can go bigger than 35's atm just cuz the space in my back wheels is limited it wouldn't turn nice with 37's

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    A larger offset rim will help with that. As to how much the trans will take, I've no idea. A set of rubi takeoffs are always a nice upgrade however the jk rubi take offs are a bit wider and with a truss lots stronger then the tj ones. (however they are not bolt in)

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    Tire size is everything when it comes to dictating design of pretty much the entire Jeep. It can also dictate power requirements for some people. as far as transmissions go, the loads placed against them (gearing, weight, tire size, etc.) can frequently be just as important of a consideration besides the HP fed into them.

    Set some goals. You are asking very generic open ended questions in which you will get no specific answers.

    So, what size of tire do you want to run?
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    I'd like to either stay with my 35's if I do go bigger it would b no bigger than 37's

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    And you have the stock 30/35 axle combo now?

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    Yes

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    35's are the cut off for that axle combo. Some people can make the 30/35 live with the 35's....and some cannot.

    37's are a bit of an oddball tire size in that some people can get them to work with 1/2 ton sized axles (like a D44) but many cannot and end up having to move up to 1 tons which are almost too big for 37's...almost, IMO.

    If you do not plan on swapping out the 30/35 combo, do not go any bigger than 35's. If it is staying together as is, enjoy it. Or be prepared to spend a lot of money in axle parts keeping it together with 37's.

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    Ok I'll most likely keep it the same for now cuz it doesn't run just fine Thx for the info .

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    I was just curious.

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    Pretty well Covered for the Possible Bad Stuff However there are plenty of Engine mods that Can Help you regain lost power and or increase HP but they will cost you...

    Simple things like Electric Fan and Better flowing exhaust and Intake systems or you can go more complex like a Rebuild and Stroke it or go Turbo or Supercharger...

    I am in the final stages of building my 4.0L Stroked to a 4.7 and Supercharger, However I have also upgraded my rear to a D44 with Big brakes and I am running 35's on my MJ soon to be locked once the locker shows up
    but since your already pushing it with a D35 and 35's more HP could mean the end of that D35...
    1989 Jeep MJ: 4.7L Stroker, 4WD Swap, 97+Conversion, RC Long Arm Upgrade Kit, 35x12.5x18 Mickey Thompson MTZ's, WJ D30, WK SRT8 Rear D44 w/approx. 8" Lift
    1983 Jeep CJ7: SOLD

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    Yeah I figured that I wanted to add some hp but I figured adding to much may mean bigger changes

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    Used to be a company called Avenger that made superchargers... just looked but I can't their website anymore, I think they may have gone 'tits up'.

    I knew a guy in Vancouver when I lived out there that had 1 in his TJ... had some serious balls compared to stock!
    OF4WD MEMBER# 6656

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    Banks has a turbo kit now... Should provide some good power but it will also warrant a serious axle upgrade for 35s.

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    Yeah my dad could get me a superchip that if programmed right can add +190hp plus more torque .. etc. But than I know there money going somewhere else cuz that's a lot of up to add

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    Quote Originally Posted by jeepfreak2456 View Post
    Yeah my dad could get me a superchip that if programmed right can add +190hp plus more torque
    Riiiiiiiight.

    Unless you have a late model diesel engine out of pick up in your heep, there is no hand held device/programmer/module that will add 190HP. The gains are negligible at best and it certainly will not double the output of a 4.0L.

    I'm not sure where you are getting your information from but I do know it is woefully inaccurate.

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