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Old 07-27-2013, 09:02 PM   #1
Rot Box OP
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Oddometer: 190
Wicked The BIG bore 2 smoker thread

Lets say around 400cc+ any year make and model.

What do you ride? Where do you ride it? What have you done to it? And the big question: Why do you need all that power?!
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94 ATK605DSES - 1984 CR500R - 1981 XL500S
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Old 07-27-2013, 09:34 PM   #2
Rot Box OP
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Here's my 1984 Honda CR500R.

Motor: 520cc (91mm) bore. Porting and head work by Eric Gorr. Lowered compression with major reshaping of the squish band. Decompression valve. Keihin PWK 39.5mm Air Striker. lightyears better than the stock time bomb/ping-king.

Suspension: Re-sprung with Pro-Action valving with 87 CR cartridge forks. Lightyears better than the stock pogo sticks.

Misc: Billet clamps, Scotts damper, Clarke 4.0 gal tank. classic gold wheels.

There is no sound on earth more captivating than a big bore finner at wide open throttle--can't get enough!



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Old 07-27-2013, 10:00 PM   #3
jar944
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Location: Chantilly VA
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Cr5/KTM hybrid.
I use it for everything from single track to hillclimbs.


As for why, climbing takes lots of HP, and the cr is cheaper than the my bigger ktms to maintain/build.

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Old 07-29-2013, 12:41 PM   #4
dynodave
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Laugh I'm in...

My pics have been posted elsewhere on ADV, but my stuff belongs in this thread...because they are all (almost all) big bores.

And for any big bore rider that is contemplating a change, read this before it's too late:

http://www.off-road.com/dirtbike/fea...est-11104.html

























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Old 07-30-2013, 06:45 AM   #5
81cr450
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Location: Piute ATV trails Utah , Dreaming of Baja
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I use hoops just like that on the back of my station wagon

Damn sweet collection you've got there Sir
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Old 08-04-2013, 08:58 PM   #6
Enduronut357
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my 1975 dt400

this is what i ride, though it needs work at the moment


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Old 08-09-2013, 07:22 PM   #7
305racer
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Location: ST. AUGUSTINE ,FLORIDUH
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Quote:
Originally Posted by dynodave View Post
My pics have been posted elsewhere on ADV, but my stuff belongs in this thread...because they are all (almost all) big bores.

And for any big bore rider that is contemplating a change, read this before it's too late:

http://www.off-road.com/dirtbike/fea...est-11104.html



Guess after I save my milk money I know who I need to get in touch with to find a '79/'80 GS 400+
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Old 08-10-2013, 07:16 PM   #8
dynodave
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Thumb

Quote:
Originally Posted by 81cr450 View Post


I use hoops just like that on the back of my station wagon

Damn sweet collection you've got there Sir
Thank you.
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Old 08-11-2013, 06:18 PM   #9
craydds
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Location: Las Cruces, NM
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1976 yz 400

This is the bike I have been working on:


It's a 1976 YZ400:


Put the bike back together and have ridden it out in the desert. But have pulled the motor out again, going to rebuild the motor.
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Old 08-11-2013, 07:28 PM   #10
Rockcat
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Location: Portland, OR
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I built this '70 CZ 360 sidepipe to race in the vintage races at Hollister Hills. It's on the first piston for a '73 CZ 400, so its no longer a 360. Last month I smoked a couple of young guys on 450F's on the HH TT track. They thought I was just a fast old guy, but they don't understand how much better the lower CG bikes turn. I've trail ridden a few times and the power of the old air hammer is impressive.
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Old 08-13-2013, 06:31 AM   #11
booniebasher
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Old 08-13-2013, 06:33 AM   #12
booniebasher
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I am very excited about cr500 I owned several in the past haven't had 1 for a while. I am super stoked.

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Old 08-13-2013, 03:22 PM   #13
zokalr13
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heres my 1991 CR500 thats getting a restoration [im waiting on top end parts] yeah,these big bore bikes spoil you- anything else just wont cut it im afraid....
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Old 08-18-2013, 11:13 AM   #14
Rot Box OP
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Great looking bikes everyone. I've said it before but I love that blue/yellow Maico dynodave. You don't see those very often--if ever in the states
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Old 08-18-2013, 12:02 PM   #15
KustomizingKid
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I will buy a Cr500 or Kx500 for next summer... They just sound like too much fun
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