Poor cylinder running and cam timing

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Commando77
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Joined: Sun Oct 08, 2017 10:35 pm
Location: Fleet, Hampshire

Re: Poor cylinder running and cam timing

Post by Commando77 »

Well, I told you so. Tony M was closest and while it was 180 out on rear cams it definitely wasn't strong anywhere. Dumbo 🙄 read the manual again and took note what I learnt doing the mccts. For some reason I had ignored that and continued to time the rear pot 360 degs out. How it ran and produced 130 psi comp test with 4 valves just opening I don't understand. I repeated the test just before correcting the cams so it was real.
Thanks for all Yr suggestions... A lesson learnt 👍
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alanfjones1411
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Location: watford

Re: Poor cylinder running and cam timing

Post by alanfjones1411 »

If it's any compensation to you you're not the first,and won't be the last to do that.Glad you sorted out. :thumbup:
SO WHEN DOES THIS OLD ENOUGH TO KNOW BETTER KICK IN
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Commando77
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Re: Poor cylinder running and cam timing

Post by Commando77 »

Thanks :beer:
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tony.mon
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Re: Poor cylinder running and cam timing

Post by tony.mon »

Good that you sorted it, sometimes you just have start over and redo.
It's not falling off, it's an upgrade opportunity.
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sirch345
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Re: Poor cylinder running and cam timing

Post by sirch345 »

So is it producing 160psi compression on both cylinders now :?: or at least close,

Chris.
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Wicky
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Re: Poor cylinder running and cam timing

Post by Wicky »

Could have been worse...

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Commando77
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Re: Poor cylinder running and cam timing

Post by Commando77 »

Around 158 front and 162 rear (ground exh valves), cold.
What's that, a hybrid! 😁
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sirch345
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Re: Poor cylinder running and cam timing

Post by sirch345 »

Commando77 wrote: ↑Wed Jan 16, 2019 9:50 am Around 158 front and 162 rear (ground exh valves), cold.
That's more like it :thumbup:
I'm glad you got it sorted in the end :clap:

I bet it sounds much better now as well :D

Chris.
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Chris58
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Re: Poor cylinder running and cam timing

Post by Chris58 »

Good to hear is wasnt anything more serious!
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Commando77
Posts: 200
Joined: Sun Oct 08, 2017 10:35 pm
Location: Fleet, Hampshire

Re: Poor cylinder running and cam timing

Post by Commando77 »

As soon as it cranked with ign off the sound was different. Needless to say I'm happy it was nothing more serious but I knew it was mechanically OK and no valves or pistons were being hurt! Just pis*ed I'd ignored the bleedin' obvious and was Richard around with a tooth either way on the gears and stripping the carbs for the third time. ..and all for a noisy gearbox bearing. At least the bottom end is fresher though the shells were very good with little wear. Rear susp is also nice and fluid now with new linkage pin and needles. Cheers.
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Commando77
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Location: Fleet, Hampshire

Re: Poor cylinder running and cam timing

Post by Commando77 »

Don't know if this link works, just testing...
https://photos.google.com/share/AF1QipM ... 5BZjJXZTR3
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tony.mon
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Joined: Wed Jul 25, 2007 10:46 pm
Location: Norf Kent

Re: Poor cylinder running and cam timing

Post by tony.mon »

Link works about as well as your first timing effort! :wave:
It's not falling off, it's an upgrade opportunity.
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sirch345
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Re: Poor cylinder running and cam timing

Post by sirch345 »

Commando77 wrote: ↑Wed Jan 16, 2019 8:39 pm Don't know if this link works, just testing...
https://photos.google.com/share/AF1QipM ... 5BZjJXZTR3
It's working now and your bike sounds spot on, well done :clap:

Ah yeah I nearly forgot, you left of one of these [ at the end of your link. You had /url] when you need [/url] so almost there :)

Chris.
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tony.mon
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Location: Norf Kent

Re: Poor cylinder running and cam timing

Post by tony.mon »

Sounds good to me, best get it redlined on the road to check, though :twisted:
It's not falling off, it's an upgrade opportunity.
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alanfjones1411
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Location: watford

Re: Poor cylinder running and cam timing

Post by alanfjones1411 »

Sounding sweet :thumbup:
SO WHEN DOES THIS OLD ENOUGH TO KNOW BETTER KICK IN
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