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Post by Armageddous on Jul 17, 2010 18:45:23 GMT -5
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SeattleJusty
No, a boxer will not fit in a Justy.
Posts: 1,587
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Post by SeattleJusty on Jul 17, 2010 19:06:23 GMT -5
Good use of a brake lathe!
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Post by onsk8 on Jul 17, 2010 23:53:25 GMT -5
Looks good. One thing to watch is that you do not thin it too much. They can break, as i was told by justy racer who found out first hand. I have his second one that lasted. ill get a piccie when i get a chance.
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Post by Armageddous on Jul 19, 2010 21:23:57 GMT -5
I would love to see it. Also I question if maybe the flywheel was not balanced and the harmonic vibration may have killed the flywheel? I cut mine so that no spot is thinner than just over an inch, I felt it would not affect the strength too much.
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Post by micco on Jul 21, 2010 16:09:10 GMT -5
How much did you lighten the flywheel? My Justy´s wheel weights 4,5kg. Originally it is 11,5kg
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Post by onsk8 on Jul 22, 2010 17:49:21 GMT -5
I just weighed mine and it comes in at roughly 6 kg with the pilot bearing and no hardware. I believe it could stand up to some more thinning, particularly below the starter ring. The arrow is pointing to where justy racers broke because of too much removal.
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Post by Armageddous on Jul 23, 2010 21:46:55 GMT -5
How much did you lighten the flywheel? My Justy´s wheel weights 4,5kg. Originally it is 11,5kg Whoa! What sort of a difference did that make for your overall driveability? Cool pics onsk8. I would assume by those that the flywheel in your car is not modified?
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Post by onsk8 on Jul 24, 2010 0:03:02 GMT -5
Drivability was fine, needed a bit more gas when in first with the occasional stall. Unfourtunatly there is currently no flywheel in my car(rebuilding). However, i did drive the lightened one for a year.
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Post by micco on Jul 25, 2010 4:34:55 GMT -5
Drivability was fine, needed a bit more gas when in first with the occasional stall. Unfourtunatly there is currently no flywheel in my car(rebuilding). However, i did drive the lightened one for a year. I agree. Drivability is great but if I make new flywheel maybe 6kg would be perfect mass.
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Post by onsk8 on Jul 26, 2010 20:50:39 GMT -5
Was the 4.5 kg(10 lb) difficult to drive with? Have you driven with it, and if yes for how long? I feel i could lighten it more and retain drive ability but i would be concerned with longevity. Well if i was driving it right now. Ha
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Post by micco on Jul 27, 2010 1:54:14 GMT -5
Was the 4.5 kg(10 lb) difficult to drive with? Have you driven with it, and if yes for how long? I feel i could lighten it more and retain drive ability but i would be concerned with longevity. Well if i was driving it right now. Ha It's not difficult to drive but of course it's little difficulter than original. I have driven half year with lightened wheel including three track days (ice track). Original wheel was 10kg:s by the way...
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Post by Armageddous on Aug 7, 2010 22:04:04 GMT -5
Did it improve the throttle response noticeably? Thats pretty much my goal.
Update.. Flywheel has been professionally balanced and will be installed soon!
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Post by micco on Aug 12, 2010 3:29:51 GMT -5
Did it improve the throttle response noticeably? Yes it did!
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Post by onsk8 on Aug 13, 2010 21:19:54 GMT -5
About a year ago i did a side by side test with stacks. A jab of the throttle with his stock flywheel rose the rpms to approximatly 2500. With the lightened flywheel it would go straight to 4000. This was not scientific in any way. but man you could feel the difference. Whole different car.
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Post by Armageddous on Aug 13, 2010 23:01:02 GMT -5
Awesome. It seemed to rev faster, but I bolted it to my EFI engine so I'm assuming that may have had a lot to do with it as well. I guess I will know when my car runs again.
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Deleted
Deleted Member
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Post by Deleted on May 18, 2011 2:22:00 GMT -5
Nice! I have a spare flywheel and may need a clutch job soon. If that is the case, I will definitely do this as well. I can hopefully use the same lathe I used to modify the Ford Escort wheels on my car.
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Post by streetruler on May 30, 2011 19:28:28 GMT -5
i personally wouldnt do this in a car that makes so little power. that flywheel helps keep the car moving when you encounter something like, a hill. mine has such little power that i need the inertia to help.
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Post by Armageddous on May 30, 2011 22:45:22 GMT -5
I pity you. Terry
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Post by streetruler on May 30, 2011 23:54:57 GMT -5
i have no idea what thats supposed to mean.
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Post by Armageddous on May 31, 2011 20:17:09 GMT -5
Sorry, I suppose I was a little condescending. My car has no trouble on hills, nor does it lack power. This could be attributed to the fresh engine, and the fact it's an EFI motor in a 1st Gen, but that's all I meant by what I said. Terry
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