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pash
 Post subject: Re: Bolt on upgrade
PostPosted: 06 Jun 2016 16:23 
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proff. patpending
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Joined: 06 May 2009 20:20
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Current ride: Victoria Sponge
Location: Bristol - Gateway to all things good
Except in the US where they are not to be trusted and had to make do with Sportster cams :run:

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Graeme1203
 Post subject: Re: Bolt on upgrade
PostPosted: 06 Jun 2016 16:52 
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Current ride: 97 M2, 09 XT
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Might be wrong, but have in my head that the 99 M2 had the thunderstorm heads and maybe a different piston shape

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03
 Post subject: Re: Bolt on upgrade
PostPosted: 06 Jun 2016 17:29 
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gusm2 wrote:
Not sure, I think it's a bit "softer" in the cams, I run a V&H too

No. A '99 M2 has a Thunderstorm engine and the same cams as an S1/S3/X1. Unless it is a USA bike which has Sportster cams.

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 Post subject: Re: Bolt on upgrade
PostPosted: 06 Jun 2016 17:31 
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Graeme1203 wrote:
Might be wrong, but have in my head that the 99 M2 had the thunderstorm heads and maybe a different piston shape

Correct. Thunderstorm heads and pistons. The Thunderstorm heads have a different combustion chamber and bigger valves.

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