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Author Topic: cb350f head on a 400f  (Read 578 times)

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Offline muttblbc

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cb350f head on a 400f
« on: May 04, 2010, 02:55:40 PM »
puttin a frankenbike back together, will this work?
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you cant drown if your born to hang.

Offline fmctm1sw

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Re: cb350f head on a 400f
« Reply #1 on: May 04, 2010, 03:02:09 PM »
There some posts on here about this, can't recall when it was talked about last...  4 or 6 months?
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Quote from: 754
Dude is that a tire ? or an O-ring..??

Quote from: inkscars
This is not a pod thread
This is not a #$%* on my vacuum gauges thread
This is a help or GTFO thread.

1973 CB350F
1973 CB350G
1975 CB550K
1983 GL650I
1973 CB750K3 (http://forums.sohc4.net/index.php?topic=92888.0)
1984 Kawasaki KLT-250 (AKA 3 wheeler of death)
1994 Honda TRX300
1999 Honda TRX250

Offline muttblbc

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Re: cb350f head on a 400f
« Reply #2 on: May 04, 2010, 03:19:05 PM »
couldent find it with the search.
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you cant drown if your born to hang.

Offline Triffecpa

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Re: cb350f head on a 400f
« Reply #3 on: May 04, 2010, 05:14:55 PM »

the two center front studs on the CB350F motor are longer in order to allow the head nuts to attach.  The casting on the 350 motor is thicker in those areas than on the 400.  So it will physically fit and it uses the same cam.  I think that the valves are a half mm or something smaller.  So you will need to install longer studs in the front center spots to get it to bolt onto the 400 bottom end.

I did the opposite swap and ended up using some spacers to fill in teh area on teh 400 head so that the nuts would tighten down on longer studs.

TR
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