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Gerry MacNutt
Joined: 14 Apr 2012
Posts: 114
Location: Canada, not USA state,
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 Posted: Thu Nov 22, 2012 3:07 pm Post subject: |
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| The middle of the bridge expands when hot, hence when cold if you could look at it from the side it should look slightly banana shaped, so if you put a steel straight ruler on it vertically you would see a slight gap of air in the middle that transitions back to normal on top and bottom as it gets to the main area of the barrel. The idea is while is is at operation running temp it expands to a straight line, hence this then does not push the ring into the back of the gap on the piston. A little 400 and 600 wet with WD-40 will do the trick, the art of it is to take off just the right amount and transition shape. That comes with many years of motor build to know just the right combo. Don't destroy the plating. Practice on a junk barrel. |
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Tyson Henry
Joined: 10 Aug 2011
Posts: 359
Location: United States, Texas, Arlington
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| Posted: Thu Nov 22, 2012 4:17 pm Post subject: |
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| Gerry MacNutt wrote: | | The middle of the bridge expands when hot, hence when cold if you could look at it from the side it should look slightly banana shaped, so if you put a steel straight ruler on it vertically you would see a slight gap of air in the middle that transitions back to normal on top and bottom as it gets to the main area of the barrel. The idea is while is is at operation running temp it expands to a straight line, hence this then does not push the ring into the back of the gap on the piston. A little 400 and 600 wet with WD-40 will do the trick, the art of it is to take off just the right amount and transition shape. That comes with many years of motor build to know just the right combo. Don't destroy the plating. Practice on a junk barrel. |
Wouldn't this also be illegal? |
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valentin yakimenko
Joined: 05 Sep 2012
Posts: 20
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| Posted: Thu Nov 22, 2012 4:22 pm Post subject: |
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Lol... What are you allowed to do.to the engine then..lol. if nothing then how all the engine builders make living...ha ha ha
_________________
Toys: 2000 CRG storm powered by cr 125 Stock Moto.2007 F 350 powerstroke. 2012 Yamaha Raider 113ci |
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Gerry MacNutt
Joined: 14 Apr 2012
Posts: 114
Location: Canada, not USA state,
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| Posted: Thu Nov 22, 2012 7:46 pm Post subject: |
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| I don't run this class, the question to me did not concern a rules issue. |
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Michael Taksa
Joined: 25 Jul 2001
Posts: 1426
Location: United States, Massachusetts, Boston
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| Posted: Fri Nov 23, 2012 6:38 am Post subject: |
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| Valentin, in "Stock Honda" class you are really required to keep pretty much everything OEM-Stock. In Mod Moto class you can experiment with cylinders, ports, pistons, heads, etc. |
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Vernon Head
Joined: 21 Jul 2001
Posts: 456
Location: United States, California,
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| Posted: Fri Nov 23, 2012 11:12 am Post subject: |
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| The cylinders that I have bought already had a relieved exhaust port from the factory. |
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valentin yakimenko
Joined: 05 Sep 2012
Posts: 20
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| Posted: Fri Nov 23, 2012 11:38 am Post subject: |
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Are you running 99 or 01 cylinders?
_________________
Toys: 2000 CRG storm powered by cr 125 Stock Moto.2007 F 350 powerstroke. 2012 Yamaha Raider 113ci |
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Vernon Head
Joined: 21 Jul 2001
Posts: 456
Location: United States, California,
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| Posted: Fri Nov 23, 2012 11:41 am Post subject: |
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| 99. |
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valentin yakimenko
Joined: 05 Sep 2012
Posts: 20
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| Posted: Fri Nov 23, 2012 11:44 am Post subject: |
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You got yours from Honda dealer or kart parts destributor?
_________________
Toys: 2000 CRG storm powered by cr 125 Stock Moto.2007 F 350 powerstroke. 2012 Yamaha Raider 113ci |
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Vernon Head
Joined: 21 Jul 2001
Posts: 456
Location: United States, California,
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| Posted: Fri Nov 23, 2012 12:02 pm Post subject: |
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| Service Honda. |
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