Author Topic: Engine swapping  (Read 2177 times)

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Offline florence

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Engine swapping
« on: November 18, 2010, 05:44:14 AM »
Does anyone know if the cb450/cb500t engine will fit into Cb350 K4 frame?  The bottom half crankcases look the same.  I have been looking on the internet to try to find another person mad enough to try but so far no luck.

Anyone seen any strange conversions?


Offline Alan F.

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Re: Engine swapping
« Reply #1 on: November 18, 2010, 06:17:31 AM »
I dunno man, those DOHC twins were pretty tall engines. Maybe look in the factory shop manuals for frame measurements?

EDIT: the 72 CB450 in this thread http://forums.sohc4.net/index.php?topic=75013.0 is a single downtube frame, you may have exhaust clearances with a twin downtube frame.
« Last Edit: November 18, 2010, 06:20:13 AM by Alan F. »

Offline cbtrx400ex

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Re: Engine swapping
« Reply #2 on: December 04, 2010, 11:28:00 AM »
Don't know about your swap, but a 400ex quad engine fits in a cb 500 frame pretty nicely ;D

« Last Edit: December 04, 2010, 07:57:11 PM by cbtrx400ex »

Offline cbtrx400ex

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Re: Engine swapping
« Reply #3 on: December 04, 2010, 10:11:58 PM »
Or how 'bout this one...Alfa Romeo V-6 in an old Harley...bet it sounds pretty sweet!

« Last Edit: December 04, 2010, 10:13:54 PM by cbtrx400ex »

Offline Alan F.

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Re: Engine swapping
« Reply #4 on: December 06, 2010, 06:48:33 PM »
I can't imagine that kickstarter is functional, anyone?

Offline cbtrx400ex

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Re: Engine swapping
« Reply #5 on: December 06, 2010, 07:31:41 PM »
I read up on the bike, it's not functional but the trans is. IIRC it is a 4 speed