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My '72 Challenger project

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  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    It was stupid hot in the shed today, it was 38 C outside & well into the high 40's inside... note to self look into AC seriously for the shed.... anyway I wanted to get the front suspension back on the car, I would like to get her up on the hoist by next weekend. The longer 4.5" long bolts for the K-Frame arrived during the week so I was able to get that all bolted up.


    Some of this suspension was already on the car before I took her apart but the tubular K-Frame from QA1 is new as are these QA1 lower Arms

    I cleaned up the main pivot as it had some tiny surface rust on it & then greased it up before bolting them on 

    Then I just popped the ball joint on the old arm to free the spindles 

    The upper arms have rose joints & as you probably know rose joints are suspect to getting grit & dirt on them that can cause wear & failure so I went with the option of cleaning them off with some brake clean then greasing them up & then covering them in some little rubber boots I found online. 

    Trying to fit these was a lot like trying to put a swimming cap on a fridge.... but I finally figured out a way to get them easy enough  




  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    On went the spindle 

    I remembered from the first time I fitted these upper arms that this relocating bracket required some of the body of the car to be clearanced of course this is all new metal so the clearancing needed to be done again, but as I'd done it before it was only one cut & then a test fit needed. 


    Then it was simple enough to just bolt them in... now there is heaps of adjustment for these arms but that will have to wait till a lot more of the car is back together.

    Next up was to install the front struts after fitting a rubber boot to their rose joints too 

    That's most of the front end that I need in order to get the wheels on & roll her onto the hoist anyway...

    I went to bolt the steering box back on, but with the car on stands like this there wasn't a lot of wiggle room under there for me with something this heavy & awkward... I couldn't get it to line up at all, it actually looks like the 3 holes on the K-Frame don't line up with the holes on the body of the steering box... but it's hard to really see or at least it was tonight but by this stage I was well past hot & frustrated so I decided to pull the pin for the night. Plus I actually don't need it fitted to make the car into a rolling shell, I'll just use a length of wood or strap steel to lock the wheels together so that they turn together & then I can work on fitting the steering box with the car on the hoist where it will be much easier to work on & modify if I need too...




  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Wanted to get the Dodge back on her wheels tonight as I hope to move her to the hoist on the weekend as that just makes reassembly life so much easier. Figured I'd put the torsion bars back in, so Dodge didn't use springs in these cars but used these long bars, mine are the thicker options from Hotchkis. 

    They lock in place with one end in the chassis crossmember & the other end goes into the lower control arm & then an adjuster in that lower arm makes it a 1 minute job to raise or lower the car by twisting on the bar & making the bar more or less springy 

    I'd forgotten that these are a bitch to slide home, both hex ends are a tolerance fit & the bar also needs to be pulled under tension... I was able to pull the bar to line it up but trying to pull the hex ends into their respective homes just had me sliding along the floor & the bar not moving... so I decided stuff it.. I'll do this job when the car goes on the hoist. Probably better that way anyway as if I wait till I have the engine in etc then I can set the initial clocking of the bar for the ride height I want with the weight in the car.

    Without the bars installed there is some serious rake angle happening there... so much so that I do think the front might be too low to be able to clear the crossbar of the hoist as I try & roll it up... but that's future Dave's issue I guess.

    I have a few tiny jobs left on the GT-Four now to do the next two nights & then hopefully that's kinda finished & I can focus 100% on getting some good progress made on this from this weekend on.



  • Registered Users, Registered Users 2 Posts: 3,178 ✭✭✭Brief_Lives


    sooooooooooooooooooooo careful with the paint!



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    With the GT-Four off the hoist now & with the help of a mate we moved the Challenger up onto the hoist where I suspect she'll live for a while as I start to put her back together. 




  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I haven't had as much time to spend on this as I would have liked since putting her on the hoist... but I got a bit done this weekend. The first thing I wanted to get installed was the torsion bars, I know I've said this before but these old Dodges don't have springs up front they run these thick bars that have hex heads that lock into the chassis & the lower control arms & the weight of the car works against the torsion bars & twists them to give the springy effect normally supplied by a spring...

    You can see above where the C clip goes in to stop the bar from moving back out... the coolest feature of this style of suspension is that you can use the bolt that you see hanging down from the bottom of the lower arm (just below the QA1 sticker) to add or remove tension to the bar & that in turn adjusts the cars ride height up & down in a matter of seconds. 

    ​​​​​​​I've taken a guess at the ride height I want... won't know if I got that right until the engine & the panels are on to put the full weight onto the bars 

    Next up was installing the steering box

    I needed to do a little clearance work as the steering box was fouling on the aftermarket lower control arm when the suspension was moved through its full range

    Then the steering arms went on

    The idler arm needed some shims as the bracket it bolts into has a larger opening that the old stock K frame had... 




  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Shocks went in......

    Last job for the night was installing the bump stops... I'd like to get a bit more done at night now during the week if I can, really need to get my finger well & truly out with all 3 projects over the coming months 




  • Moderators, Science, Health & Environment Moderators, Social & Fun Moderators, Regional West Moderators Posts: 60,484 Mod ✭✭✭✭Gremlinertia


    That ride height feature is fantastic

    Close to off the lift now, exciting 😉



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Spent the day working on the rear of the car, I replaced the front spring bolts... didn't bother with a pic of that just imagine a new 5/8" grade 8 nut & bolt.. Found the new rear shackles that need to go on. 

    QA1 shocks went back in

    Next up was the rear sway bar, so dog bones installed first then the ubolts to attach the bar to the diff tubes   



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I knew I was going to have an issue with the new wheels & the original wheel studs, they aren't long enough when you do a rear drum to disk conversion to the brakes & take into account the thickness of the new 17" wheel. With the original 14" wheel & a brake drum on you have just over 16mm of thread showing... according to the research I've done you need to have the width of the bolt (or stud in this case) as thread engagement to have a secure clamping force... so I'd need a minimum of 12.5mm of thread engagement.

    With the brake disk on & the wheel on I had about half of the thread engagement that I need.. 

    I really struggled with aftermarket longer wheel stud options that would fit the stud holes of the Dodge axles, the only ones I could find where NASCAR style uber long studs... but it was this or have the wheels fall off so I went for this as I didn't want to end up in a ditch saying that's not gone well under my breath.....

    Clearly thread engagement won't be an issue here

    Installing these was a pain as I couldn't pop the axle out & use a press so I had to pull them through.... but job done

    Then I installed the handbrake shoes 

    Then the disk & 4 pot calliper

    Then the wheel



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  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    That's the rear end sorted now.... tomorrow I'll move back to the front to finish that off I think 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I know you shouldn't do any alignment work until you have the weight in the car, but I decided to get it close now anyway & then I can do it again after the engine & trans are in & the panels are on.

    I have a set of aluminium of boards for doing the toe in measurements... they sit hard up against the tyres & have slots cut in for the measuring tapes that came with them.  

    I have a nice little bit of kit for doing the camber & castor measurements, it connects neatly to the original 14" wheel rims 

    Annoyingly it won't attach to the 17" wheels due to the design of where the rim meets the tyre.... so when it comes time to redo the alignment I'll have to remove the big brakes so that I can fit the 14" wheels back on unless I can find a way to attach it to these 17" wheels

    Put the big brakes & 6 piston callipers on 

    ​​​​​​​Fitted the front sway bar up 

    ​​​​​​​Wheels on.... I do love the look of these wheels on this car  



  • Moderators, Science, Health & Environment Moderators, Social & Fun Moderators, Regional West Moderators Posts: 60,484 Mod ✭✭✭✭Gremlinertia


    Its a lovely five spoke, reminds me of the ford escort mark 2 or 3 fado fado, always loved them



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Decided because reasons to look at fitting the Hydratech brake booster to the car

    When I'd bought the Baer break kit it came with a very cool master cylinder & bias adjuster 

    Sadly reading the installation destructions that came with the Hydraboost setup they have set it up for a GM length pushrod that goes into the master.... NFI why when it's a bloody Mopar kit & as such the pushrod is too long & when I bolt the master onto it the pushrod is already pushing the brakes on... The below pic is how much of a gap is left when the pushrod first engages with the sleeve in the master 

    Looking at the back of the master it seems like the design is such that it's easy to unbolt the section where the pushrod goes in & replace just that section... so I'll have to see which is cheaper/easier to replace the pushrod in the booster or the plunger in the master.... 

    I really like where the bias adjuster mounts up under the master here

    Looks pretty good in the engine bay if you ask me



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Got a bit more done today in between doing some other house related to do list tasks & having a mini shed tidy up. I wanted to fully seam seal the inside of the car so that one night during the week after work I can do the relatively clean task of installing the sound deadening... some of the factory floor joins are so big you could lose a small dog in them. 

    I had to go & get some new seam sealer as the two tubes I had didn't survive the hot summer we had & had cured in the tube which is a shame as this stuff isn't cheap 

    Job done…

    I'd also bought a bag of floor gromets as most of the old ones I'd pried out had cracked due to old age

    I'm not sure if I can be bothered cutting the sound deadening stuff around these gromets as I don't ever see myself pulling them out to drain the car... I assume that's only reason you'd ever use them? I might just apply the sheets directly over them thus ensuring no leaks coming in to the car from outside. 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I'm heading out tomorrow with a mate to inspect a 1997 Ford F100 pick up truck, but part of that deal is that he's coming here first & we'll look to drop the 6 Pack motor in so I can test fix the new block hugging extractors.... man do they hug the block tight & make sure that they don't foul on the body work etc.



  • Registered Users, Registered Users 2 Posts: 336 ✭✭Tech_Head


    I read “hot summer” and thought that sealer must be really crap before I remembered you didn’t mean our Irish summer 🙂.

    Progress looks great!



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Yeah…. meant the Aussie summer where we had several 40deg days in a row… which saw the temp in the shed into the 50's



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I lost the original engine mount brackets in a shed tidy up a while ago... so I'd no option but to order a new OEM set 

    I have an aftermarket set of actual mounts that aren't the soft rubber style of the OEM ones 

    I had to remove Carbs 1 & 3 from the intake so I'd have somewhere to attach the lift leveller too 

    This was one of the simplest installs vers my other cars as the torsion suspension set up means that there is no strut towers pushing into the engine bay to worry about 



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  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Next was a test fit of the new Dougs headers, these are a set of block hugger headers so they are much more compact that the OEM style that hangs down so far that the steering arms actually pass through the OEM style. These fitted up so well & aren't close to anything so far. 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Started the dynamat install, I knew I didn't have enough to finish it so I've more on order.

    Installed the brake pedal assembly too

    I found the new door strikers on a shelf when I was looking for some bolts so decided to whack them on now too before I lose them. 

    Next up was the steering column install... I clearly hadn't paid enough attention to this when I took it off & put it away, but I'm really not happy with it's condition. I've been looking online now at aftermarket fully collapsible units that have a tilt function too.. so my plan is to order one of these to replace this one… adding all new firewall gaskets with it. 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I have a mate popping past tomorrow so to make the most of a second set of hands, I think I'd like to get the boot lid & the doors mounted back on the car. This meant that I needed to go out to the shed tonight after work to glue on the boot rubber, I've even followed the destructions which said to clamp it down after gluing so hopefully it'll settle nicely over night now.



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    The doors went on today, always nice when a five minute job makes such a huge change to the car

    Then the boot lid went on... this is the boot lid open reflecting the contents of the shed like a mirror, this kinda blew my mind for a bit

    Next up to go on was the bumper & the rear valance panel 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Last thing for the day was to fit the flip top fuel cap... no real reason other than I think this is such a cool feature of the cars styling 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Installed the new shiny door handles today, needed to clearance the door internals a little as the internals of these new handles are a little larger than the OE ones. I also adjusted the door strikers  correctly so the door sits right when closed.

    Next I went to install the new billet bonnet hinges, sadly I've discovered that two of the 3 captive nuts on each side have damaged threads & you can't put a bolt through them... so I guess the next job is re-tapping them. 



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  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Got a bit more done on the Dodge, needed to remove the old key barrels from the old door handles.. these needed to then be metal polished as they had years of filth & grim on them before putting them back on the car.

    The new fuel tank has the fuel pump built into it so I no longer need to run the mechanical style fuel pump on the side of the engine, so that has to come off

    I have a shiny Moroso blanking plate to back on to cover the opening for the fuel pump arm.  

    My new collapsible 9 way tilt steering column turned up, as did the new uni joint needed to mate it to the steering box.. I felt it odd that this much needed part didn't come in the kit... 

    ​​​​​​​Press fitting that onto the steering box shaft was "fun"  with the steering box still in the car 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    The kit did come with a new firewall mount that is much nicer than the old OEM one it replaces & actually seals the hole up nicely 

    Where the D shaft slides out of the bottom of the column is the first of 3 collapsible sections 

    The other two are on the column in the car one before & one after the under dash mounting points... really happy with how this looks vers the old unit  

    Also had my painter stop by for a coffee chat so we took that time to properly align the boot lid now, as I had only thrown it on roughly. The new rubber is making it sit a little higher than it should but the boot catch isn't adjusted fully down yet, we'll give the rubber a few weeks to settle at this clamping force for now & then adjust the boot fully down to it's final height then.

    Went to re-tap the captive nuts that hold the bonnet hinges on & when applying the tiniest amount of pressure the captive nut snapped off.... not good

    Thanks to the chassis strengthening bracing that I've installed access to these captive nuts is a huge issue now.... but I think I have a plan, as the captive nuts are in line I'll drill out the bottom one & make up a new plate with new nuts welded to it that I put in behind the bracing, for now I just have a normal nut & bolt in the top hole replacing the lost captive nut.. I'll not tackle that this weekend mind you this sounds like a perfect future Dave problem if I ever saw one... 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Finished off the install of all of the sound deadening on the firewall & in the rear of the cab 

    Whilst going through some boxes, I found a new reconditioned wiper motor that I don't remember ever buying... but I glad I did as the old one would have looked crap in the engine bay.

    I think the next job I'll look to do is run the wiring, I have some new looms to go in. I might look at doing the same on the XB & get the wiring in for both at the same time. This is the dash loom.  

    This is the engine loom 

    I've now ordered a new front light loom & a rear light loom



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    I want to clean up the transmission before it goes back in, someone has painted it silver in the past & it's not held up great. I plan to clean all the paint off & repaint it I guess. I'm not sure if standard paint is the go here or if I should be looking at engine paint as it's better with heat maybe? What have people used that's good?



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    The new custom 4 core radiator I ordered turned up, got it from the same company I got the XB one from & decided to go with the same twin electric fan set up that's on the XB. Looks like a nice bit of kit that should do the job.



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  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Went to put the radiator in on Sunday & found that the bracket sides don't line up with the sides of the opening for the rad on the car. 

    You can see here each side that it's a little short & I'll have to make up some brackets to bolt between the car & the rads brackets now to make this fit

    That had me wondering what went wrong as this is the larger big block rad size that I got. I still have the old front end of the car as garden art (I plan to make something cool like a BBQ maybe out of it)

    Broke out the measuring tape & sure enough the opening in the new panel is 4 & 1/4"s wider... it never occurred to me to measure this prior to ordering the rad as I don't remember any doco around the front panels saying that they where uber wide because reasons... 

    I spoke to the Rad shop & as they don't get a lot of asks for Big Block Challenger rads & as they did nothing wrong they're not keen on taking it back. I did think about trying to sell this & getting another custom size rad made up, but I think I'll just extend the wing brackets on the side of this rad out a bit & use this one as it's more than big enough to keep her cool



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    As I said in the XB thread I've being dying with a flu & a chest infection for the last month so it's been a way too long since I've been out in the shed, the fact that this is one of coldest winters we've had here in a while isn't helping either.

    But I really need to get on with these bloody cars, so as my mate was over decided to get the bonnet & the guards on the Challenger too. The Challenger bonnet is stupid heavy even for the two of us lifting it, so I worked out a way to balance it a few inches about where it sits on some foam & then I could tilt the hinge up & get the two front bolts in... really happy with how easy that install was.

    Then bolted up the rear & installed the struts 

    I have the guards on now too but they are just roughly bolted on, I'll organise for my painter to come round soon & we'll line up all the gaps then. He was very adamant that that wasn't something I should do without him & that suits me just fine. 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    It's been weeks since I've done anything in the shed, need to get moving again. To that end I want to get the trans back in the Challenger this weekend, it's finally stopped raining so I've been able to spend some time during the week cleaning & painting this.

    How it started

    Then cleaned

    Then primed

    Then a couple of coats of high temp silver paint

    Just need to paint the dipstick tube in Hemi Orange & replace the torque converter & then it's ready to go back in.



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Bit more cleaning & painting was done, the dipstick tube & the shifter cable bracket are done & attached now.

    Cleaned up the gearbox mount 

    I couldn't find the flywheel for two days... another item I'd put into an uber safe place, well it's not really what you'd call a flywheel on a Dodge 

    Here is the Dodge "flywheel" next to the flywheel for the XB. The starter motor engagement ring isn't on the Dodge flywheel at all so therefore they don't feel the need to have them be of any substance. 

    The torque converter for the Dodge is bigger & heavier than that for the XB because it has the starter ring mounted to it & also the balancing weights too 

    Now everything needed to bolt in the transmission is cleaned & repainted & ready to go.. 



  • Registered Users, Registered Users 2 Posts: 1,273 ✭✭✭Daved_XB


    Sat was catching up with friends etc but I was able to spend all of Sunday in the shed, so stuff happened.

    Flywheel went in & even used the torque wrench & locktight as prescribed to do so... no ugga dugga here. 

    Swapped over the torque converter for the new higher stall version. I did the install dry a few times as I'm always paranoid that I wouldn't get full engagement on the oil pump in the trans. If you've never installed one you push it on till it stops & then whilst slowly turning you push a little more & it will click in a notch & then you repeat that until it's clicked in 3 times & is fully home. Then you measure to ensure it's fully home & then you have a moment of self doubt & take it off & install it again... once you've done this a few times you then fill the converter with fluid & do the final install. Then every time you walk past it you give it a little twist & push.. you know to be sure to be sure. 

    The new bigger trans jack is a beast, it feels so much better than the old cheaper one I had been using

    ​​​​​​​Hung the trans crossmember on the back of the box

    I was surprised how easily it went in in the end, I was expecting more of a fight... but the car gods where clearly happy with the blood sacrifice I made on the teeth of the torque converter earlier.

    I was very happy that the trans just squeezed through the gap between the exhaust headers as I really didn't want to pull them off, looking ay the tiny gap where the starter needs to go I'm very glad that that is a future Dave's problem as that looks like no fun. Luckily I'd already ordered a tiny high output starter, no way the OEM one would fit in that gap.

    I've pulled the Dodge off the hoist now as I need to change gears (crap pun intended) as the GT-Four engine should be done in a few weeks & as such I need to do a chunk of suspension work to it before then... note to self, one project at a time in future... one



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