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Force-V4 Forum Index » RC30 Discussion » New member in Scotland

 
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godge
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Joined: 24 Jan 2017
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Location: Scotland

  

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PostPosted: Sun Feb 05, 2017 9:23 pm    Post subject: New member in Scotland  


Hi Guys

New to the site and new to the Honda V4, just purchased an 89 RC30 its been an absolute dream of mine to own one. I have various other bikes and I'm a big 2 stroke fan with an RG 500 and a 350lc I also have a 916 amongst others so my garage is getting a bit tight.
I'm in the process of gathering info on the RC30 and the site has been a lot of help. I am now giving my RC30 a service and its a big learning curve,i have managed to get a copy of the service manual well its basically a photo copy but its better than nothing. can any you guys help me regarding valve clearances as the manual states one value and I'm finding differing clearances suggested in searches on the internet. Any help would be much appreciated.
I'm sure I will be asking many more questions in the future.Cheers Very Happy
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StephenRC45
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Location: Cornwall, UK

  

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PostPosted: Mon Feb 06, 2017 8:31 pm    Post subject:  


Hello,

Welcome to the forum.

The RC30's valves clearances are very specific. Honda use quite a tight tolerance for their RC30 valves and supply shims in increments of 0.02mm rather than the normal Honda shims which go up in increments of 0.05mm.

However early RC30's suffers from relatively poor valves so if you have lost a large amount of clearance you will more often than not find the need to replace the valves rather than just adjust it out with the shims.
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godge
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PostPosted: Mon Feb 06, 2017 10:11 pm    Post subject:  


Hi Thanks for reply

Yes I'm thinking more along the lines of valve replacement, but what is the definitive valve clearance as I see varying sizes, the manual states inlet 0.15mm-0.21mm ex 0.27mm-0.33mm would everyone agree with this.

Thanks
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StephenRC45
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PostPosted: Tue Feb 07, 2017 10:44 am    Post subject:  


Yes those are the correct clearances for a standard road going RC30. There are different clearances and specifications for the race kit RC30's.
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godge
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PostPosted: Wed Feb 08, 2017 8:34 pm    Post subject:  


Thanks Stephen

Ill need to re shim a few valves. Any help on removing the camshafts would be appreciated, do I need to lock the two gears on the cam before removal as one is a pre loaded gear ? The manual I have is a copy and does not mention this.

Thanks for any help
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StephenRC45
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PostPosted: Thu Feb 09, 2017 5:08 pm    Post subject:  


Yes, you need to lock the gears together. You'll see a locking hole on the gear wheel. Insert a tool to lock the two gears together so that when you release the cam carriers the preload is not lost from the spring as you remove the cams.




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godge
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PostPosted: Thu Feb 09, 2017 9:19 pm    Post subject:  


Thanks Stephen

That's very helpful.
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