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Kimjon

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Posts posted by Kimjon

  1. 6 hours ago, tortron said:

    DIY surface grinder

    Feel free to send me your heads for skimming

    sZlblM5.jpg

     

     

    qQPMwqP.jpg

    qyMH65E.jpg

    I once mounted a 4" grinder in a similar way.

    Then bolted a sump off a 350 chev to a bit of MDF...and used the grinder to cut the sump off about 50mm up from the flange the entire way around. I turned the sump 180° around on itself and then welded it back together.

    This worked out perfectly and the motor could then go into a commodore with the sump now clearing the front cross member.

    • Like 6
  2. 7 hours ago, nzed said:

    Gtfo nathan. Lol commodore hahahaha

     

    Pretty certain you can buy everything you need to convert an impala as a bolt in type deal and is adequate for nz compliance 

    Yes as above give Simon @ airride a call. GC. He does  bulk shipments every so often so if you arent in a hurry if he doesn't have what you need in stock then it would probably be cheaper to wait for that.

    And oi! Lay off the poor old VN Commodore...they say there's an arse for every seat:-)

    love that car. It's got an LT1 and a 6 speed manual...hauls arse! Though I do understand only drug dealers, scout masters and glue sniffers own VN's...well at least that's what my mates have said in the past...

    • Like 2
    • Haha 1
  3. 10 hours ago, flyingbrick said:

    Hey man.

     

    Thanks for that. Conclusion: rookies wrong

    Happens to all of us sometimes.

    Except spence 

    Oh and david.

    We were both right...but I think we were talking past each other and just missing each others points. :)

    • Like 1
  4. 5 minutes ago, flyingbrick said:

    Hey mate.

    Your math contradicts your lower paragraph.

    The surface area within the bags does not change...?

    Just like holding up anything with your arms- your body does not extert more force on an item to hold it 1cm or 1m off the ground.. why would the bags need more pressure to exert more force upward?

    Correct. Once a certain value is achieved its volume in the bag that really lifts the car....but also the pressure has an effect as area is constant...so let's put some numbers into the equation and see how it changes.

    P=F/A

    Therefore 

    F=P.A

    So let's simply it and just use 100psi and 80inch2 for area. Then;

    F=100psi x 80inch2

    F= 800lb of force.

     

    Lets do it again with 50psi and the same area of 80inch2

    F= PA

    F=50psi x 80inch2

    F= 400lb force

     

    So you see the force is a direct relationship with how much pressure is in the bag. And just like a jack lifting a car...as the bag fills it expands and exerts lift...but only once the force is larger than the dead weight of the car.

     

  5. Pressure = force ÷ area

    So

    Force = pressure x area

    So the bigger the diameter...the more force for the same pressure.

    If you think of force as spring rate...then the more pressure the more/stiffer the "spring rate" becomes...and the higher the car will sit.

     

  6. Thanks for replies.

    That is a good steer in the right direction. Looks like I need to get in touch with those guys you linked.

    I'm definitely attracted towards a "kit" for simplicity reasons. I've dropped quite a bundle on this car so it won't be straight away...but it's next on the to do list, as the 64's just look soooo much better dumped out low to the ground.

     

    • Like 1
  7. Okay guys,  knowing what you've all learnt by doing...how would you approach bagging a 64 impala these days?

    I've just trolled through all 16 pages going back 8 years. There's a bit of evolution in ideas here.

    So how about now? 

  8. Righto...say hypothetically I brought a 64 impala. What would be the go with getting it bagged?

    What is the best air bag kit to buy and from who?

    Anything I should or shouldn't do?

    Certification pitfalls? 

    Who's the best certifier to deal with in regards to air bags?

    Any help/advice would really be appreciated "hypothetically" of course;)

    • Thanks 1
  9. I've been weighing up the need for a form of webb to strengthen up the point where the bmx downtube is welded to the box frame. Personally I don't think it needs it(?)...but I do have an element of doubt in my mind.

    Considering this will have a top speed of 70-80kph I've decided to err on the side of caution and put one in to be sure.

    962.thumb.jpeg.5d97ee6a23d0e607e0500e34e4dccc7d.jpeg

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    I'll only weld the sides to the downtube and not the top/bottom of the webb...as that would create a stress point and undo all the benefits.

  10. You may get away with welding? I've locked spider gears in differentials and welded the steel pins to the cast iron heads before.

    Ideally you preheat...weld...then bring temperature down again slowly to prevent cracking.

    Other way about it could be to grind a keyway in.

    • Like 1
  11. Butchery out of necessity.

    The axle was $1 no reserve on trademe...yup...I won it for $1. However the hubs were missing.

    I found some hubs second hand at an equally affordable price. Problem was they didn't fit the splines. Nor did anything else I could find. 

    Warning: the following may upset sensitive viewers. 

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    Hubs will be welded on to axle. I've turned them down to fit and milled in bolt recesses. Good to go:)

     

     

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