Author Topic: A10 valve timing  (Read 2757 times)

Offline muskrat

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Re: A10 valve timing
« Reply #15 on: 10.10. 2014 11:45 »
And definitely don't take the haynes manual as anything to go by. In their book they rebuilt one A10, an iron head. Our A's came in numerous models and variants. Even the bike on their cover has the wrong front brake ('68 A65).
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline Gerry

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Re: A10 valve timing
« Reply #16 on: 11.10. 2014 08:27 »
Hi Muskrat, Yes I'm beginning to realise that. The Haines Manual also doesn't give any mention of packing the dynamo chain and cogs with grease. Not that I could find anyway. Got the Super Rocket twin carb' head on yesterday and today fitted the rocker box........took me about 15 mins' whooohooo, getting bloody good at it. Too buggered to do any more and my old back is killing me. lol Tomorrow set the tappets, fit the tank and see if I can get it running and oil the floor with the timing cover off. Primary cover off so I can check ignition timing. Wish me luck fellas. Cheers. Gerry (Anyone see the Adelaide Advertiser paper today with the Great White chewing on a seal pup?) Great place Australia....more deadlies than anywhere else in the World.

Offline muskrat

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Re: A10 valve timing
« Reply #17 on: 11.10. 2014 12:08 »
Best of luck mate. Have you made provision to balance the carbs. a small 1/32" hole into each manifold opened up to 3/16" to glue a hose tail into. When not hooked up to gauges link together.
King Browns guard my bottom shed near the creek.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline duTch

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Re: A10 valve timing
« Reply #18 on: 11.10. 2014 21:40 »

 Good luck with out Gerry, hope it goes like a rocket. ...!
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Offline Gerry

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Re: A10 valve timing
« Reply #19 on: 12.10. 2014 00:54 »
Hi Muskrat, Dutch, 10am....just got out of bed...love this retirement game!! No Muskrat only got a single carb' and manifold for the moment. Got enough troubles as it is without giving myself any more eh? lol. Will use a separate 12 volt battery to check the ignition timing and this time check I have the clamp the right way round on the HT lead dooh!! Cheers Gerry

Offline Gerry

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Re: A10 valve timing
« Reply #20 on: 14.10. 2014 12:12 »
OK Guys.....Th latest is.......thought I'd adjust the primary a tad....top adjuster nut stripped!!!! Made a new one out of stainless hex' bar........kicked it over slowly to check valves were not coil bound and double check valve timing.......kickstart spring broke!! Went and got a new one and fitted it, refilled the gearbox and tried the kickstart and BANG out of the exhaust.....checked the ignition timing manually and all ok so changed the leads over and tried again.....kicked me back a few times so rechecked the ignition timing and seemed ok, the bloody advance was stuck in the fully advanced position. Gave it a few twists and put it into retard mode.....kicked it again and away she went, so much better than ever before. So packed the dynamo chain with grease, fitted a new gasket to the timing cover and refitted it. Had enough for today so still haven't checked the ignition timing with the strobe as yet, but will do so tomorrow and hopefully button up the primary cover and take her for a ride......if nothing else gives me trouble. lol Wish me luck fellas. Cheers. Gerry

Offline Topdad

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Re: A10 valve timing
« Reply #21 on: 14.10. 2014 14:05 »
Gerry, you're certainly due some particularly for sticking at it , very best of luck and enjoy tomorrow, BOBh
" rules are made for the guidance of wise men and the blind obediance of fools"
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Offline muskrat

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Re: A10 valve timing
« Reply #22 on: 14.10. 2014 20:12 »
Good onya Gerry. Once your out on the road with her it will all fade away.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline Gerry

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Re: A10 valve timing
« Reply #23 on: 22.10. 2014 04:11 »
Hi Guys, No news on how she goes as yet......too bloody hot out there, over 35 degrees and I aint going out without the leathers either. Only got 4 days of rego' left so got to do it before that ends...Cheers. Gerry

Offline Gerry

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Re: A10 valve timing
« Reply #24 on: 22.10. 2014 09:02 »
Hi Guys, OK bit the bullet and took her out for a short ride this evening just to see how she goes. Only problem I have now is she still misses on the left hand cylinder after slowing down and on opening up again half the time but not every time. Plus an oil leak from the primary cover which I oiled with transmission oil and greased the gasket before putting it back last time. So will remove it and use gasket cement (Locktite gasket eliminator). Anyone know if the A7 longstroke engine timing pinion, which is what I have on the bike, is the same as the A10 timing pinion other than the timing mark being different? Cheers. Gerry

Online trevinoz

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Re: A10 valve timing
« Reply #25 on: 22.10. 2014 21:01 »
Hi Gerry, the pinion is the same except for the timing mark.

Offline Gerry

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Re: A10 valve timing
« Reply #26 on: 25.10. 2014 05:29 »
Hi Trev, OK thanks fella, it is appreciated.....at least now I know timing is correct and other than the missing on the left hand cylinder when ticking over occasionally and when opening up all seems ok. Will do another compression test on both cylinders alternately. Run on right cyl' and check the left and vice versa on the right. Might have to bore and new pistons if any appreciable difference between cylinders. Cheers. Gerry

Offline muskrat

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Re: A10 valve timing
« Reply #27 on: 25.10. 2014 11:11 »
Don't be lazy. Take out both plugs, test one at a time with the throttle wide open and about 10 kicks.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
Australia
Muskys Plunger A7

Offline Gerry

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Re: A10 valve timing
« Reply #28 on: 25.10. 2014 14:33 »
Hi Muskrat, That's going to kill my poor old back fella!! Even with the plugs out. lol Will give it a go though your the master mate. Cheers. Gerry