MonkeyBiznez

S30 Chassis Jig and Sheet Metal Fabrication

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    Hey everyone, I'm new to the forum so I'd like to say hello!

    I'm an engineer and I'm trying to restore a 1970 Series I 240z in Philly. I bought the car sometime late February and since then I've been getting all of the tools I need to rebuild the car from the frame up. 
    So far there are a few major areas of concern on the body and frame that I need to either replace or patch up including, but not limited to... Both rear quarter panels, trunk floor, both floor pans, firewall, frame rails (front), various lips, possibly an A-pillar and etc. 

    I'm using CAD and the technical drawings from the factory service manual to try and make my own jig, but I'd like to know if any of you know where I can find plans that have been used to successfully make a chassis jig from scratch. The drawings from the manual are sort of difficult to read and I'm trying to do this without making too many mistakes. 🙂

    Lastly, I plan on making technical drawings, and even some CAD models that I'll upload here when I'm finished and I know everything is functional. 

    65954895_10158607962762598_1862388877147242496_o.jpg

    F8CFA394F0B0448CA406A71A37A2EF51.jpg

    IMG_20190327_223117.jpg

    Edited by MonkeyBiznez
    Forgot to add photos
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    Another welcome to the group - and big thanks for taking on the saving of another early car! @Captain Obvious in your area is one very smart guy and should be a great help for any local issues.  Consider adding your VIN and build date info to your signature, its always a help to those responding to posts.

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    On 7/4/2019 at 5:08 PM, jfa.series1 said:

    Another welcome to the group - and big thanks for taking on the saving of another early car! @Captain Obvious in your area is one very smart guy and should be a great help for any local issues.  Consider adding your VIN and build date info to your signature, its always a help to those responding to posts.

    Thanks! I just updated my VIN! Didn't see a spot to put my build date...

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    On 7/4/2019 at 3:54 PM, Captain Obvious said:

    Welcome aboard neighbor!!

    Might be something in this thread that could help maybe?
    https://www.classiczcars.com/forums/topic/61482-240z-gets-jiggy/#comments

    @Captain Obvious Thanks Capn'! That helps a lot!

    Looking forward to bugging you hahaha

    On 7/4/2019 at 5:01 PM, siteunseen said:

    Two peas in Philly!

    Welcome to the forum. You have already found your #1 friend. :beer:

    @siteunseen Thank you!

    On 7/4/2019 at 7:10 PM, grannyknot said:

    Welcome to the forum and a big thanks for any tech drawings you share with the rest of the members.  That kind of resource is priceless.

    @grannyknot Thanks!!! I do a lot of reverse engineering of parts and stuff at work, so if you have any requests let me know. I plan on making a CAD model for every part of the car I plan to replace to see if everything looks alright before I puttem' on the car, so I'll upload those as I go along. 

     

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    Welcome from someone who's been there.  I used a frame table that a body shop friend had.  But I just did two floors and a frame rail.  My rockers were in good shape except for one dogleg.  Use your sway bar, mustache bar,  and transmission support in place to help with alignment.

     

    Edited by 26th-Z
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    On ‎7‎/‎6‎/‎2019 at 6:05 PM, MonkeyBiznez said:

    Thanks Capn'! Looking forward to bugging you

    Bug away.  I'm about 20 miles out of the city, but I can be coerced to drive in if I've got a good reason.  LOL

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    Crap... now we have two Eagles fans on here.
    Just kidding, welcome aboard...good folks on this forum...even the Philly guys!


    Sent from my iPhone using Tapatalk

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    Impressive work space. I had to get a 4-post lift to store my Z. It looks like you have room for several more.

    Good luck with your little project and I'm glad to see one more Z saved from the scrap yard.

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    On 7/9/2019 at 9:24 AM, Jeff Berk said:

    Impressive work space. I had to get a 4-post lift to store my Z. It looks like you have room for several more.

    Good luck with your little project and I'm glad to see one more Z saved from the scrap yard.

    Thanks Jeff! I was really fortunate to find this work space. 1100 sqft for $100 a month!!!
    But tbh I do split the rent with 4 other people... lol 

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    @ConVerTT I took inspiration from your jig and I started to make one based off of your design with a few tweaks.

    I making a CAD model that's not quite yet complete, but I'm referencing your post with the drawing in the maintenance manual. 
    Depending on how sturdy it turns out, I might do some math and see if I can turn it into a rotisserie! 
    Check it out!

    !!!!!!WARNING!!!!! 
    Drawing/model are not complete, dimensions may not be accurate!!!


     

    240z_Jig_Drawing_Incomplete.JPG

    240z_Jig_Model_Incomplete.JPG

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    1 minute ago, ConVerTT said:

    Sweet!  Looks good man.  

    Thanks for the props!

    Appriciate it, glad you like it!
    Btw, did you use thru holes and long bolts for the rear subframe/trans-mount pieces, or did you use the stock bolts with a large hole  at the bottom of the horizontal box tube to fit a socket? 

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    PS:  I think it will be too heavy to rotate, plus it will be in the way.  I plan to lift mine onto a rotisserie and then remove the jig when the time comes.

    Cheers

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    Just now, ConVerTT said:

    PS:  I think it will be too heavy to rotate, plus it will be in the way.  I plan to lift mine onto a rotisserie and then remove the jig when the time comes.

    Cheers

    Ahhh, gotcha. I'm probably going to whip up some plans when the time comes. Are you building your own? 

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    5 minutes ago, MonkeyBiznez said:

    Appriciate it, glad you like it!
    Btw, did you use thru holes and long bolts for the rear subframe/trans-mount pieces, or did you use the stock bolts with a large hole  at the bottom of the horizontal box tube to fit a socket? 

    I used long bolts through, but either way would work

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    2 minutes ago, MonkeyBiznez said:

    Ahhh, gotcha. I'm probably going to whip up some plans when the time comes. Are you building your own? 

    Sort of.  I bought a kit years ago.  Basically it has contains the rotating parts and plans - source/cut/weld your own HSS.

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    Great stuff. Not sure if you have it yet, but would be really interested to have the design include the hood mounting bolt holes. Thanks

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    13 hours ago, scotta said:

    Great stuff. Not sure if you have it yet, but would be really interested to have the design include the hood mounting bolt holes. Thanks

    Plus the hood latch and radiator top bar positioning. This way a sub jug could be built that would fit over the engine (if still installed) and confirm placement of suspension tower tops, and hood setup. 

    Cheers

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    Monkey, what Cad data did you need? Ive already taken the body diagram i to cad, traced and verified most of the data. Ive made a body jig, which allows me to measure from, similar ro a car-o-liner / global jig. Ive made sil panel clamps which pinch the sill edges(lasercut 16mm steel plates on base plates). 

    Accuracy on jig is <0.5mm, and serves me well. To the point frustrates my mate who bumped my car moving it and now has an alignment issue on one of the strut towers. (bumped frame with a forklift with the lh tower against the hoist!)  oouch. 

    Basically ive used a 10mm dia pin which is the 'C' datum and i can use a tape anywhere diagonally to pinpoint with a plumbob or square, to fit a point in 3d space. I think i had some pics on the Aus Z car site somewhere. If not ill post some up here. 

    Nat0z

    Edited by Nat0z
    Typos
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    7 hours ago, Nat0z said:

    Monkey, what Cad data did you need? Ive already taken the body diagram i to cad, traced and verified most of the data. Ive made a body jig, which allows me to measure from, similar ro a car-o-liner / global jig. Ive made sil panel clamps which pinch the sill edges(lasercut 16mm steel plates on base plates). 

    Accuracy on jig is <0.5mm, and serves me well. To the point frustrates my mate who bumped my car moving it and now has an alignment issue on one of the strut towers. (bumped frame with a forklift with the lh tower against the hoist!)  oouch. 

    Basically ive used a 10mm dia pin which is the 'C' datum and i can use a tape anywhere diagonally to pinpoint with a plumbob or square, to fit a point in 3d space. I think i had some pics on the Aus Z car site somewhere. If not ill post some up here. 

    Nat0z

    @Nat0z, welcome to the forum, the download section is always hungry for that kind of practical info,

    https://www.classiczcars.com/forums/forum/18-downloads/

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