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Author Topic: Engine Rebuild  (Read 483 times)

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Offline cgarbe

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Engine Rebuild
« on: August 13, 2013, 07:05:21 AM »
Hey everyone!

So I have a 1975 Honda CB400F that has a cracked crankcase that I obviously need to replace which means I have to have the engine rebuilt. I've been reading about the big bore kit turning my 408c into a 466c. Is it worth buying the kit and boring out the engine to 466c or should I just leave it at 408c? Of course more power is preferred but will doing so mean I need to upgrade/replace other parts on the bike?

Thanks!
Chris
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1975 Honda CB400F
1978 Honda CB750F

Offline PeWe

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  • Posts: 15,692
  • Bike almost back to the 70's 2015
Re: Engine Rebuild
« Reply #1 on: August 13, 2013, 08:12:40 AM »
Buy another good bike with more power will be much more cost effective.  Repair/upgrade has it's expensive domino effect  :-\
Then sell your bike part by part. Investigate the interests for the parts that are OK.
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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
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