Honda-SOHC

SOHC.co.uk Forums => Other Bikes => Topic started by: Athame57 on November 06, 2021, 11:17:39 PM

Title: CB800 V8!
Post by: Athame57 on November 06, 2021, 11:17:39 PM
Anyone seen this thing before? I can't figure out where the carbs are myself! https://www.youtube.com/watch?v=C_A6A53YMHI
Title: Re: CB800 V8!
Post by: Bryanj on November 07, 2021, 07:50:59 AM
Probably only 1 carb in middle of vee behind that cirular chromecover on lh side
Title: Re: CB800 V8!
Post by: taysidedragon on November 07, 2021, 10:57:08 AM
Sounds horrible at idle. Cooling of rear cylinders must be non-existent!
Title: Re: CB800 V8!
Post by: McCabe-Thiele (Ted) on November 07, 2021, 11:51:45 AM
Sounds horrible at idle. Cooling of rear cylinders must be non-existent!

That rattle at idle spoils it somewhat - reminded me of a local chap from Mickleover who siamesed a pair of Hillman 998cc Imp sport engines together in the late 1970's he disguised the two radiators with Kenlow fans as a pair of rear panniers. It was featured in a motorcycle magazine in the early 1980's - the frame was hand built from SS - he worked at what was British Rail so he could cast his own alloy engine & flywheel casings.

It was called something odd like a "Betinson" that was part of his surname just can't remember now what it was exactly - I did the DVLA inspection when he applied for it's first registration - it ended up with a Q plate. It looked very professional back in the day.
Title: Re: CB800 V8!
Post by: SumpMagnet on November 07, 2021, 12:53:41 PM
revved a little slow too ...but have to agree, I would not be happy with the noises at idle. Something is not quite happy.

He's also had real issues getting an exhaust system to work with very little space. I love it that people attempt to do these crazy things, but I reckon the builder of this one has some more work to do before it's finished
Title: Re: CB800 V8!
Post by: Laverdaroo on November 07, 2021, 01:13:35 PM
Wheres the salapcoming from, it sounds awful at 800rmp!

Looks like a lovely job and must have caused heaps of 'head rot' sorting that out but it doesnt sound well does it?



looks cool though!
Title: Re: CB800 V8!
Post by: K2-K6 on November 07, 2021, 01:30:20 PM
"It was called something odd like a "Betinson" that was part of his surname just can't remember now what it was exactly - I did the DVLA inspection when he applied for it's first registration - it ended up with a Q plate. It looked very professional back in the day."

Think it may be included in this link,  thread on pistonheads.

https://www.pistonheads.com/gassing/topic.asp?h=0&f=23&t=1610176&i=20   down near the end/bottom of thread.


Title: Re: CB800 V8!
Post by: McCabe-Thiele (Ted) on November 07, 2021, 02:40:21 PM
Yes that's the one on page 3! When I saw it last it had no fairing fitted. Pretty sure the bloke who built died some time ago I've searched the Internet before and failed to find it. 👍
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