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Old 08-05-21, 08:50 PM   #2241
Adam Ef
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Default Re: What have you tinkered with today?

Back on the VFR valve clearances. It's been a couple of weeks waiting for VTEC buckets /shims and took a while to remember what I was doing and what my notes meant. Started at 9am this morning and finished this evening (with covers and everything still off as I'm waiting for gaskets). All valves are now within spec. Pleased I got my calculations right first time as this is an expensive one on parts.





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Old 08-05-21, 08:58 PM   #2242
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Default Re: What have you tinkered with today?

You're a brave man.

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Old 08-05-21, 09:27 PM   #2243
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Default Re: What have you tinkered with today?

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Originally Posted by Adam Ef View Post
Back on the VFR valve clearances. It's been a couple of weeks waiting for VTEC buckets /shims and took a while to remember what I was doing and what my notes meant. Started at 9am this morning and finished this evening (with covers and everything still off as I'm waiting for gaskets). All valves are now within spec. Pleased I got my calculations right first time as this is an expensive one on parts.





wouldn't know where to start !
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Old 08-05-21, 10:23 PM   #2244
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Default Re: What have you tinkered with today?

I can see why it costs so much to get it done now. I'm 150 down on shims and buckets and then there's the replacement gaskets and washers etc at about 260. That and the 3 days I've worked on it. I imagine it would take someone experienced in doing it at least a day.
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Old 09-05-21, 12:06 PM   #2245
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Default Re: What have you tinkered with today?

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New front pads on the bike yesterday. Oddly one of the inner pads on 1 side was half the thickness of the other (hence the need for a change). The calliper & pistons are ok, no obvious signs of any underlying issue. I cleaned them up and re-torqued the disc bolts (floating set up) to make sure everything is aligned. Will see how this set go!
Thankfully pads are cheap at only 25 for the set (EBC).
In my experience uneven pad wear, with the pads on piston side wearing the most are down to sticking slide pins. I have used TRW PGF110 grease on slide pins on cars and bikes for many, many years without seeing a problem. What I did find is that if you use too much lube on slide pins it can cause 'hydraulic lock' in the blind hole where pins live, although the pins should have a flat machined onto them to allow air and lube to escape.

https://www.ebay.co.uk/p/23017012011
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Old 09-05-21, 12:09 PM   #2246
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You're a brave man.
I agree, but how did they manage to squeeze all that engine in there ?

My Brother has both a VFR750 and 800 and I don't think he has ever seen inside the cam covers.....
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Old 09-05-21, 05:08 PM   #2247
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Default Re: What have you tinkered with today?

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In my experience uneven pad wear, with the pads on piston side wearing the most are down to sticking slide pins. I have used TRW PGF110 grease on slide pins on cars and bikes for many, many years without seeing a problem. What I did find is that if you use too much lube on slide pins it can cause 'hydraulic lock' in the blind hole where pins live, although the pins should have a flat machined onto them to allow air and lube to escape.

https://www.ebay.co.uk/p/23017012011
My Callipers are 4 piston (2 pairs opposing each other - BMW F800ST). I've already ordered some retaining pins as they're not in the best of nick, no marks which would inhibit the return of the piston. But at 11 years old they probably need replacing!
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Old 09-05-21, 09:02 PM   #2248
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Default Re: What have you tinkered with today?

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I can see why it costs so much to get it done now. I'm 150 down on shims and buckets and then there's the replacement gaskets and washers etc at about 260. That and the 3 days I've worked on it. I imagine it would take someone experienced in doing it at least a day.
I think motorcycles can become too complicated. There should be more consideration given in the design to ease of maintenance.
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Old 09-05-21, 09:31 PM   #2249
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Default Re: What have you tinkered with today?

But then we'd all be riding single cyclinder bikes with drum brakes and elastomer suspension.
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Old 09-05-21, 09:35 PM   #2250
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Default Re: What have you tinkered with today?

You think that's bad, I've just read about changing the coolant in the MV 1000f4 in the latest copy of bikes magazine.

https://i.postimg.cc/rwK8gZdj/20210509-224002-01.jpg

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