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SOHC.co.uk Forums => CB750 => Topic started by: r1_pete on October 10, 2015, 11:18:43 AM

Title: CB750 Exhaust studs
Post by: r1_pete on October 10, 2015, 11:18:43 AM

The exhaust studs in my engine had been replaced with bits of threaded bar.

Am I right in thinking the genuine ones reduce in diameter to M6 ?? looking at various pictures they seem to reduce in diameter I'm guessing to give some fitting clearance for the collars.

Title: Re: CB750 Exhaust studs
Post by: hairygit on October 10, 2015, 11:42:22 AM

What engine are we talking about? 750F1 exhaust studs are M8 both ends.

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Title: Re: CB750 Exhaust studs
Post by: r1_pete on October 10, 2015, 12:00:45 PM

I'm building an F1 and an F2 engine, so if they are m8 at both ends it makes spinning a few up in stainless a lot easier.

Cheers.

Title: Re: CB750 Exhaust studs
Post by: hairygit on October 10, 2015, 12:19:00 PM

F1 and F2 are M8 both ends, but be careful making your own, Honda used rolled threads rather than conventional cut threads as they were much stronger.

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Title: Re: CB750 Exhaust studs
Post by: yozzer74 on October 27, 2015, 10:21:39 PM

I'm just going to use 30mm m8 bolts in mine do away with studs

Title: Re: CB750 Exhaust studs
Post by: mike the bike on October 27, 2015, 10:48:36 PM

Get some stainless threaded rod from Screwfix and some stainless flanged nuts.