Author Topic: Cycle X 836 / 849 piston question?  (Read 2656 times)

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Offline Garage_guy_chris

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Cycle X 836 / 849 piston question?
« on: December 08, 2014, 07:49:07 pm »
Cycle X has there 849cc Kit



Did they ever make a piston almost identical to this design in 836cc? there is conflicting info being there 65mm > 836cc but seller suggests there 849cc which should be 65.5mm



1971 Cb450 Cafe  (on the road)
1974 Cb750 Restomod (on the road)

Offline kmb69

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Re: Cycle X 836 / 849 piston question?
« Reply #1 on: December 08, 2014, 08:17:05 pm »
You should measure pistons 90 degrees from your picture, across the skirts, about .5" from the bottom. You should get pretty close to 65.5mm on the Cycle-X 849cc pistons.

Offline TurboD

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Re: Cycle X 836 / 849 piston question?
« Reply #2 on: December 08, 2014, 08:19:07 pm »
The ones they are selling on feebay are 849cc kits as listed. The caliper shows 65mm which is misleading. I bought a set last week.

Here is a link to the current auction. http://www.ebay.com/itm/1969-78-Honda-CB750-SOHC-849cc-big-bore-kit-Hot-rod-Cafe-Chopper-Bobber-/321610585050?pt=Motorcycles_Parts_Accessories&hash=item4ae17c13da&vxp=mtr

Hint... The return is address is CycleX.
« Last Edit: December 08, 2014, 08:24:13 pm by TurboD »

Offline kmb69

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Re: Cycle X 836 / 849 piston question?
« Reply #3 on: December 08, 2014, 08:40:49 pm »
Sorry, Chris. Thanks, Dave.

I did not realize that was a Cycle-X picture. Just checked their website and they have a typo on their 849cc kit there as well. 849cc is 65.5mm. Kenny needs to tune-up one of his guys/gals.

Offline Garage_guy_chris

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Re: Cycle X 836 / 849 piston question?
« Reply #4 on: December 08, 2014, 09:33:05 pm »
Thats the Ebay i was looking at.

http://www.ebay.com/itm/1969-78-Honda-CB750-SOHC-849cc-big-bore-kit-Hot-rod-Cafe-Chopper-Bobber-/321610585050?pt=Motorcycles_Parts_Accessories&hash=item4ae17c13da&vxp=mtr

Weird auction if its Cycle X's return address? cost here is $99 on cycle x $249???  I was thinking of it just to put on the future projects shelf, Not so interested in 849, would rather stick to 811 or 836cc

anyways thanks for the quick input.
1971 Cb450 Cafe  (on the road)
1974 Cb750 Restomod (on the road)

Offline TurboD

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Re: Cycle X 836 / 849 piston question?
« Reply #5 on: December 09, 2014, 05:56:53 am »
The only thing I can figure is, the new kits listed on the site are "coated" and these are older kits that they want to move.

If you look at the sellers other items, you will see a few Cyclex products. Most likely slow movers or overstocks.

Offline underdog

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Re: Cycle X 836 / 849 piston question?
« Reply #6 on: December 09, 2014, 04:53:15 pm »
  $99 is the current bid,not the buy it now price. Ad states that they have extra stuff from a shop buyout, its not their regular stock.

Offline TurboD

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Re: Cycle X 836 / 849 piston question?
« Reply #7 on: December 09, 2014, 09:45:07 pm »
The last few set they have sold went for around 135 -140 + shipping. My guess is this "seller" is someone at Cyclex.

Offline PeWe

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Re: Cycle X 836 / 849 piston question?
« Reply #8 on: December 10, 2014, 05:18:55 am »
Cheap 67.5mm pistons would be nice for my pile of parts.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967