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Author Topic: tips for building a chassis.  (Read 7638 times)

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wazza

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tips for building a chassis.
« on: March 04, 2009, 06:31:21 PM »

has anyone built their own chassis???? any tips????

ive finally decided after months of not touching the monster an all the niggling little thoughts of
"regardless of what i strengthen it'll break an kill me"

the only way im going to get the strengh im after to carry the mog axles is to make it a chassis =D>

altho i doubt it'll be quite like that.

things like winch mounts will be made a part of the chassis.
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greggmo

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Re: tips for building a chassis.
« Reply #1 on: March 04, 2009, 09:07:37 PM »

sounds fun. do you think you cant make the xj strong enough. exocage and some kinda tube chassis tied into the existin shell maybe?
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garyf

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Re: tips for building a chassis.
« Reply #2 on: March 04, 2009, 09:28:08 PM »

put it on a Disco chassis :lol:  :lol:
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wildwood

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Re: tips for building a chassis.
« Reply #3 on: March 04, 2009, 11:31:36 PM »

Stretch a TJ chassis?
I know of one going if your interested!
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Dave69

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Re: tips for building a chassis.
« Reply #4 on: March 05, 2009, 05:30:18 AM »

take a look at the NAXJA site in the advanced fab section. there are a few posts that will cover what you want in regards to serious chassis modifications
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Mike Pavelin

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Re: tips for building a chassis.
« Reply #5 on: March 05, 2009, 06:38:04 PM »

Use a rolling chassis from an FSJ with the 360, shorten it to fit the XJ wheelbase. V8. MMMMMMMM.......
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Panic mechanic!

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Re: tips for building a chassis.
« Reply #6 on: March 05, 2009, 07:10:40 PM »

:imwitstupid: i was thinking that!
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wazza

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Re: tips for building a chassis.
« Reply #7 on: March 05, 2009, 09:06:13 PM »

Quote
sounds fun. do you think you cant make the xj strong enough. exocage and some kinda tube chassis tied into the existin shell maybe?
i thought bout it an made  couple of rough plans but for the abuse i want to give it ive got a horrible feeling it just won't last.

Quote
put it on a Disco chassis  
put it on a Disco chassis :lol: :lol:
NO

Quote
Stretch a TJ chassis?
I know of one going if your interested!
didn't even think of that, but id end up making my own backend as the dogleg for the rear springs wouldn't work for me.

Quote
Use a rolling chassis from an FSJ with the 360, shorten it to fit the XJ wheelbase. V8. MMMMMMMM.......
what a good idea!!!! think ill have to start scowering ebay for a heap!!!

cheers for the ideas, ill ponder some more about it now, but im still not off the idea of building myown.

hopefully in about 3 or 4 weeks ill be able to make a start, wether buying steel or finding a pre made chassis
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wazza

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Re: tips for building a chassis.
« Reply #8 on: March 05, 2009, 09:09:00 PM »

just thinking, if i made it a chassis but keped it original in the sence of no engine swap (so no engineer report needed)

ya think i'd be able to sneak it past my mot'ist :axe:
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dirtydiesel

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Re: tips for building a chassis.
« Reply #9 on: March 12, 2009, 08:57:42 PM »

No offence intended but,

If you need to ask,

You probably shouldn't even think about it.
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wazza

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Re: tips for building a chassis.
« Reply #10 on: March 12, 2009, 10:45:56 PM »

im only asking cos everyone has a different look on things, an altho im shure ive thought of everything regarding haw to make it, if i ask now an someone throws a spanner in the works which i didn't realise befor, then atleast its not to late to change as its only on paper at the moment and i won't be re-making things.

for instance i never thought of extending a tj chassis or shortening an fsj chassis, both very good an viable options that hadnt even crept into my mind once! but since looking an thinking about it, they still wouldn't quite suit what i want an wouldn't be quite right. (altho they could both be made to fit, probly alot easyer)

as for my mechanical and fabrication skills, they far surpass making the chassis, suspension arms, and modifying the body. i just simply cant afford to be making it twice so any prior advice or information from other people's experiance will be greatly welcomed!
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dirtydiesel

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Re: tips for building a chassis.
« Reply #11 on: March 15, 2009, 12:24:53 PM »

Quote from: "wazza"
as for my mechanical and fabrication skills, they far surpass making the chassis, suspension arms, and modifying the body.


Then why do you think in your own words "regardless of what i strengthen it'll break an kill me"


Quote from: "wazza"
i just simply cant afford to be making it twice so any prior advice or information from other people's experiance will be greatly welcomed!

Your deluding yourself in to thinking that research from the comfort of your keyboard will allow you to scratch build a rig perfect first time.

I've built over 40 offroaders and they still don't come out perfect first time.

Why not finish off what you've allready built, take it out and beat the s**t out of it,

If it breaks, engineer a solution to the breakage.

Otherwise you're never going to get to use it.
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wazza

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Re: tips for building a chassis.
« Reply #12 on: March 15, 2009, 09:28:02 PM »

ok, slight over exageration on the "kill me" bit, im not a structureal engineer or anything like an have no idea how to work out stresses an strains, so in this case ive proble masively over estimated the forces im dealing with but my thoughts are if i strenghen one bit, it'll break a bit further on,  an then brake further once i strenghen it again, an so on.

this in my case is basically my own stupid fault, ive got a pretty crappy unibody of a cherokee, an quite a few people have told me to scrap it or sell it or make a good start with a good base such as a cj,yj,tj or an fsj  or even a good unibody (of which ive already had a couple an got rid #-o )
an they are right a 100% spot on, but thats not what i want to do an im gonna carry on, mainly for centemental reasons, an now that ive started i want to finnsh it regardless of time scale.

i also want to try an make the jeep last an do a proper job of it instead of 5 yrs time having it drop apart an become a complete piece of scrap, an also not to just put it together thinking "that works so that'll do"

your right i won't get it right first time an it'll never be perfect but i just don't want to make such a stupid mistake or miss something major that'll cost me, hence the reason for asking on here to see if anyone's got any prior experiance to offer suggestions with.
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dirtydiesel

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Re: tips for building a chassis.
« Reply #13 on: March 16, 2009, 05:42:11 PM »

If your using it hard it probably won't see 5 years anyway.

My mog'ed comp motor is on it's 3rd full rebuild in 4 years


Once you start punishing it with the mogs, stuff that would otherwise last a lifetime will be dead in 6 months.
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wazza

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Re: tips for building a chassis.
« Reply #14 on: March 17, 2009, 07:01:03 PM »

for the first couple of yrs it'll only be a playday toy which will be a good shake down, an then hopefully ill be able to afford getting into the comp scene.

i dont expect to be able to build it not to brake (that would be amaizing) but i just know i need a good base for improvements when it does brake!

Quote
Once you start punishing it with the mogs, stuff that would otherwise last a lifetime will be dead in 6 months.
maybe i have'nt quite underestimated the force they'll put on things.
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dirtydiesel

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Re: tips for building a chassis.
« Reply #15 on: March 17, 2009, 11:49:32 PM »

Quote from: "wazza"
Quote
Once you start punishing it with the mogs, stuff that would otherwise last a lifetime will be dead in 6 months.
maybe i have'nt quite underestimated the force they'll put on things.

For example, when i 3 link'd the front end on mine. I used a setup that i've used on lots of staight axled cars without any problems. with the extra torque of the mogs the top link bushes lasted half a day whereas they normally last years.
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Bubba

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Re: tips for building a chassis.
« Reply #16 on: March 18, 2009, 05:50:03 AM »

i dunno sounds a lotta pain to me





gimee an old cj on 33s/35s and v8 for as much fun as you can need












o ang on you already got one?
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dxmedia

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Re: tips for building a chassis.
« Reply #17 on: March 19, 2009, 08:46:07 AM »

If your planning on making it road legal, remeber that you'll need an SVA, which means ABS :(
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