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Author Topic: Exhaust Ebay  (Read 834 times)

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Offline kamperman69

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Exhaust Ebay
« on: June 27, 2021, 08:46:35 AM »
 Was Wondering there is  a exhaust on EBay says its for a 1981 will it fit a 1978 750K model?

Thank you
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Offline bryanj

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Re: Exhaust Ebay
« Reply #1 on: June 27, 2021, 08:50:15 AM »
Nope
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline kamperman69

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Re: Exhaust Ebay
« Reply #2 on: June 27, 2021, 09:02:47 AM »
Numbers are HM425 Sankei 2043??
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Offline Alan F.

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Re: Exhaust Ebay
« Reply #3 on: June 27, 2021, 09:05:01 AM »
No, the 81 is a different bike. In the States we had SOHC CB750 until 1978. In 1979 we got the DOHC bikes, DOHC pipes will not fit SOHC bikes.

I recommend:

https://delkevic.co.uk/s/Honda/CB750K/1977
« Last Edit: June 27, 2021, 09:09:30 AM by Alan F. »
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Offline kamperman69

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Re: Exhaust Ebay
« Reply #4 on: June 27, 2021, 09:10:19 AM »

 :(   
OK thanks for the quick reply.
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Online PeWe

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Re: Exhaust Ebay
« Reply #5 on: June 27, 2021, 11:20:50 AM »
I have seen a CB750 SOCH with Vance & Hines 4-1 for that later twin cam 750 if I understood correctly.
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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

Offline Medyo Bastos

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Re: Exhaust Ebay
« Reply #6 on: June 27, 2021, 11:32:21 AM »
Quote from: PeWe on June 27, 2021, 11:20:50 AM
I have seen a CB750 SOCH with Vance & Hines 4-1 for that later twin cam 750 if I understood correctly.
I’ve heard the same, but never tried it.


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Offline Tim2005

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Re: Exhaust Ebay
« Reply #7 on: June 27, 2021, 11:34:13 AM »
It will fit the cylinder head ok,  but as the later engines have a large sump there will be a gap under the motor /
above the exhaust.
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Offline Alan F.

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Re: Exhaust Ebay
« Reply #8 on: June 27, 2021, 01:13:33 PM »
Yes the DOHC engines are a few inches taller, so there will be a gap between the pipe and the bottom of the engine. If you're a talented welder you can shorten the headpipes to make it fit. It's been done here on the forums a few times.
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