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Re: A65 a pain to start [Re: Manx] #712571
10/24/17 8:10 pm
10/24/17 8:10 pm
Joined: Apr 2005
Posts: 1,633
Mississauga, Ontario.
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Adam M. Online content
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Could you make a picture of them ?
Measure the clearances between valves and guides by rising them 5 mm in the guides and moving side to side.
If you feel any clearance they need new guides.

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Re: A65 a pain to start [Re: Adam M.] #712779
10/26/17 1:30 pm
10/26/17 1:30 pm
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Manx Offline OP
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The thing is that I`m swapping heads. The thunderbolt head I aquired has visualy oval valve guides.

Today I sent the head off to SRM for a total overhaul, port flow, valve seats and guides, threads and the plug threads are also stripped so they will fix those too.

I am seriously thinking of doing a propper strip down, check the sludge trap new rods and pistons and a dynamic crankshaft balance.

After reading the blurb the Map Rods make more sence to me (oil throw and little end bush) but the balance would be done at SRM so might go for the SRM rods.. Hmm...

Last edited by Manx; 10/26/17 1:33 pm. Reason: thread

1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #712805
10/26/17 5:14 pm
10/26/17 5:14 pm
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Posts: 1,633
Mississauga, Ontario.
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Adam M. Online content
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Lot's of dinaros .
I'm lucky to have very good machinist in my town :

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

Re: A65 a pain to start [Re: Manx] #712820
10/26/17 7:29 pm
10/26/17 7:29 pm
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Very nice. What carb do you use on that and it looks larger than 28mm


1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #712833
10/26/17 8:41 pm
10/26/17 8:41 pm
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Mississauga, Ontario.
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Adam M. Online content
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It was 28 mm carb and 28 mm ports, just cleaned to be even.
My carburetor was build on an old body and had original, short tickler, which was a pain to use.
But I believe you are going to buy a new one.

Last edited by Adam M.; 10/26/17 8:45 pm.
Re: A65 a pain to start [Re: Adam M.] #712874
10/27/17 4:33 am
10/27/17 4:33 am
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True. But om not sure what to go for.

Last edited by Manx; 10/27/17 4:33 am.

1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: gavin eisler] #712876
10/27/17 5:15 am
10/27/17 5:15 am
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Posts: 3,674
Sydney Australia
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Originally Posted by gavin eisler
You can crudely estimate the bore wear using the bottom of the piston and feeler gauges, compare slip fit at bottom unworn section to 1/2 " below top of bore where there is max wear.
As for new pistons, how big is yer wallet?, I have dressed up similarly seized , worn pistons before and got away with it, do not use abrasive paper to clean up the seize marks ,a fine flat file to knock off the bumps is all I used, if paper is used abrasive particles get left stuck in the piston skirt, not good.. If the bottom end is sound use a degree wheel mounted on the alt rotor and a pointer to suss out your cam timing, take readings after the first 15 thou of lift.
To torque the heads I use a 1/2" AF ring spanner( my bike is a 71 , your head nuts might be imperial BSF sizes), this is cut down, ground a little thinner for access , and an old 3/8 " drive socket is welded to the sawn off shank so a torque wrench can be applied at 90 degrees to the axis of the spanner.

pic shows torque wrench adaptor. The staggered head is not needed, a flat ringer would be better, the two parts are welded to a chunk of thick wall pipe.
I used 28 lb ft torque all round the head , more than one thickness of head gasket is available, thicker is easier to seal, anneal before fitting .


That weld is far too good for a BSA rider


Bike Beesa
Trevor
Re: A65 a pain to start [Re: Manx] #712885
10/27/17 10:03 am
10/27/17 10:03 am
Joined: Aug 2001
Posts: 3,746
argyll. scotland, uk
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"That weld is far too good for a BSA rider"

I am sloppy welder second class, I got a real welder to stick the bits together. Cost 8 home made oatcakes.

As for Manxs carb, stick with a 28 mm Concentric mark 1 , the base jetting will be a lot easier, the 750 will suck harder and create higher gas velocities, MJs may have to go down a size rather than up,, but it will be an easy starting point.

Even if the guides are oval they can be lined back to size, however if SRM are doing the work they will probably recommend Kibblewhite guides, they used to do relining , but when they redid my head last year lining guides was no longer on their options, dont know why.

The motor is not difficult to pull apart for crank checks, you will need very thin jaws for the crank pinion puller, otherwise its pretty straightforward, be very careful to protect the crank quill end feed, if it gets a knock it will throw it out of alignment. The crank drive sprocket sometimes needs a puller, its tapped for two screws , which makes life a little easier if it is tight.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: A65 a pain to start [Re: Manx] #712907
10/27/17 3:07 pm
10/27/17 3:07 pm
Joined: Apr 2005
Posts: 1,633
Mississauga, Ontario.
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Adam M. Online content
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+ 1 to 28 AMAL Concentric carb, if you want better reliability go to Premium model.
As I wrote above my bike was one kick starter with this carb and had good torque, acceleration, speed and sipped gas, specially comparing to my current T150V smile.

Re: A65 a pain to start [Re: Adam M.] #712911
10/27/17 4:05 pm
10/27/17 4:05 pm
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Thanks fellas, Mk,1 Concentric premium orderd.

I have started to completley tear down the motor.... For the daftest question ever, I need a socket set but I`m not 100% sure what I have on my bike.

I have been using normal inch hex keys, I have some metric stuff on the bodywork, Whitworth works on some and varied unmarked spanners from car boot sales works on others but I have no Idea what I should be using.

Lambretta is so much easier because they use metric... ohh.. apart from the use of 7mm (try and find those in your local hardware store :D)


1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #712917
10/27/17 5:39 pm
10/27/17 5:39 pm
Joined: Aug 2001
Posts: 3,746
argyll. scotland, uk
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BSF/ Whit tools in1966.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: A65 a pain to start [Re: Manx] #715179
11/15/17 10:23 am
11/15/17 10:23 am
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I recived an estimate on the head work needed to get it up to scratch from SRM (ouch!) and one thing they have added because it is recommended in conjuction with the 750 is porting and flowing the manifold to take a 30mm carb.

What are the advantages/dissadvantages with that?


1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #715181
11/15/17 10:33 am
11/15/17 10:33 am
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argyll. scotland, uk
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Advantage, will breath a little freer at high revs.
Disadvantage, lower gas speeds at low revs, will be a little less tractor like.
With it being a 732 rather than a 650 , it may be better for ultimate power to use the 30 rather than the 28, I have no experience of single carb 732s.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: A65 a pain to start [Re: gavin eisler] #715185
11/15/17 11:34 am
11/15/17 11:34 am
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Ok. I`ll leave that in the hands of SRM.

I like the torque ive had with the twin carb setup but I have nothing to compare it with in the real world because I have had 2x32`s and proberbly less tractable in comparason anyway.

My new head was bent like a banana and they will weld it and machine it flat, some new threads, all singing and dancing valves and guides and even replace a couple of broken fins. They are also gas flowing the combustion chambers for an easier life with modern fuels.

I sent my cases to them on monday and I am not looking forward to the estimate on the work needed but if it means a more trouble free life with the motor it will be worth it in the end.

Last edited by Manx; 11/15/17 11:39 am.

1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #715191
11/15/17 12:45 pm
11/15/17 12:45 pm
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argyll. scotland, uk
gavin eisler Offline
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Was it not already converted to end feed? unusual to see a big bore that hasnt had this done.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: A65 a pain to start [Re: gavin eisler] #715215
11/15/17 3:15 pm
11/15/17 3:15 pm
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Nope, Unfortunatly no conversion on my bike.


1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #715271
11/15/17 9:04 pm
11/15/17 9:04 pm
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Mississauga, Ontario.
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Adam M. Online content
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Don't have an experience with 750 either, but comparing my engine with double and one carb, low rev. torque was better with one 28mm carb and Thunderbolt small ports, than on my double carb 32 mm head.
I'm not a fan of enlarging ports, IHMO is very often a gimmick to get more money from the customer.
My engine with a big ports 2 carb head was an embarrassment. Not enough torque to ride in town without messing with gears all the time, couldn't pass 5500 revs on a freeway. I was planning a big block conversion, to have some torque from this engine, but decided first try a small port head ( after Rich B. enthusiastic reviews of his Clubmann ).
With this head I got more engine than I bargained for, big block forgotten completely smile.

Re: A65 a pain to start [Re: Manx] #715319
11/16/17 7:14 am
11/16/17 7:14 am
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Norway
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Manx Offline OP
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Cool, thanks


1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #723113
01/24/18 2:20 pm
01/24/18 2:20 pm
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I`ll just carry on this thread instead of making a new one.....

My head work is done and bottom end will be ready next week.

Ive grabbed a new kick quadrant, primary chain,drive chain, carb, new Hornet pipes, clutch plates, pistons, pump (thats what SRM are waiting for) and it will be soon time to start building it up again.

I have polished the Rickman frame (looks lovely), new swinging arm and rear shocks, overhaul on the Ceriani fork, new seals and oil,bushings and progresive springs....

I`ll proberbly need some advice on putting the engine back together when it gets back.


1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
Re: A65 a pain to start [Re: Manx] #723120
01/24/18 4:25 pm
01/24/18 4:25 pm
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Mississauga, Ontario.
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Adam M. Online content
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No problem, we will help you smile.

Re: A65 a pain to start [Re: Manx] #723155
01/24/18 8:36 pm
01/24/18 8:36 pm
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Great stuff. Thanks.

I like photos in threads so I will go through some of the stuff iv`e done.

I unfortunatly had to cut my rear swing arm off becase the bolt just wouldn`t come out. Whilst scouring the net for a replacement I found a neat Idea from Terry Weedy.

[Linked Image]

The purists hate it because it has a seers look but to me it makes sence. It has a little more tyre clearence, an easier way to adust chain tension and big needle bearings.

The extra tyre clearence meant that I could fit better shox. The ones fitted to my bike were a tad low at 13 inch but these are 13.5, which is what they came with from the factory.

I have re-shimmed the shox for a little more progresion and gone with a lighter spring because thes are really for Harley Sportsters out of the box.

I have used Fox before on a Kawasaki and one added benifit is that they also stiffen up the rear end laterally.

My Ceriani has also had full treatment of progressive springs, new bushings, oil , new seals and dust covers to hopefully match the rear end.

My little Myford has also been busy making wheel spacers and bushings for the shox.

Along with the rear swing arm I got hold of a sidestand. The one that was on the bike when I bought it was too short and welded to the rear swing arm, so not very prictical.

The sidestand fits where I used to have my exhaust pipes, so I have opted to fit the original Hornet type exhaust.

Oh, and I polished the frame so it matches the new swinging arm.

New front tyre that acually fits better under the mudguard and to replace the square one that was terrible to corner with.

[Linked Image]

Ceriani, I decided to keep black.

[Linked Image]

The primary case I used forever to clean off the black paint so it matches the other side which has been blasted and polished by SRM

[Linked Image]

Love my little sixties Myford..

[Linked Image]

Turned out ok!

[Linked Image]

[Linked Image]

The now, shiney frame.

[Linked Image]

Details....

[Linked Image]

With the shox fitted.... Ohh, and a nice new shiney rear sprocket.

[Linked Image]

I think the balance between shiney and black will look ok and I think I will get a black numberplate sticker made up to tie it all together.



Last edited by Manx; 01/24/18 8:40 pm.

1966 Rickman Metisse (a65)
1960 A10 golden flash
1960 lambretta li150
1942 Ariel W/ng
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