Is Better!

Dool

Dool

Backyard Bodger
Staff member
Distributor
Developer
477 Owner
Well I am either going to make a Big Fool out of myself( likely :confused:) or the,

Biggest Himalayan ever!
Here is the Barrel,

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And to fill that "Hole"
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And to top it of,
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A bigger Combustion Chamber with Bigger Valves( like 37 and 39.5(might check that!) with the seat cut to suit and the Ports matched and "Enlargened".
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Not much room for an oversize but I do have a thicker Liner as back up, this is the Top Veiw ( siera Vista?)
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The back up plan, a bit more Meat here!
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Inlet has been made shiny and bigger.
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Manifold is going to be attached to a 37mm Throttle Body.
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I found it in amongst my spare parts when looking for something else! the only concern is I thought it was on my 443 :unsure:.
Got a back up plan for the airfilter as well.
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Thanks to @barima I also have.,
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A Spacer, Lazer cut or somesuch which made from Aluminum should not slow me down much.
So by the time this is fitted the Cam will be some,,,
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6mm Vertically away from where it normally sits! :rolleyes:
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So a Cam Chain with 2 extra Links is required.
@barima again(y)

a crowd. funding site could be set up but they would skim too much so just PayPal my email account, I don't wish to make a Big deal out if it:cool:X2
 

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Giving the word "modding" a whole new dimension. waiting for the acceleration tests :cool:
 
Ring End Gap set to 14 top and 18 second

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This simple tool is up to the task and cheap.
 
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As luck would have it, I have run into some hurdles.
The 4 Main Head Bolts are now about 6mm too short, so a 19mm end mill tool bit has been ordered to adjust for the discrepancy :cool:.
The 2 6mm studs on the Cam chain side are also too short so must be removed also.
I hope the Exhaust is long enough :)
 
And on the what ever day of Xmas the courier gave to me, 19mm end mill.

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Sinking the Bolts is easier than getting longer ones I figure. ;)
 
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Of course a Flywheel Puller is required to remove the Magneto/Flywheel, so I ordered one local, then in a spate of pessimism ordered another off ebay from India ;)
Ebay came thru before Christmas but it was for a Bullet and clearly marked as such!
To the credit of the ebay seller the correct one was located( been sent in error to another customer) and posted after the break and ariived a week ago.
No word from the local dealer and I thought the Indian was stuffing me around:unsure:
So off comes the Flywheel and the Woodruff key shows signs of failure, not sheared but 1/3 the way.
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Both surfaces of the Taper show a copper sulphate green that wiped off!
Manual specifically makes mention of how clean this is supposed to be.
It is after all the friction that holds the Flywheel in place, the Woodruff key just locates it.
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There is a timing mark inside the case, I don't have dial for this yet.
Going up has its drawbacks but they are mostly overcome now, the hollow dowels and the side bolts were too short of course,
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Barrel held down and Deck Height checking!
A step that you ignore at your peril, especially if you have not widened the combustion Chamber!
Head gasket is OEM cut to size (ie a bit bigger than the Bore šŸ˜Ž), if you have seen the original you will know this is perhaps asking a bit.
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Thanks for the Hurry up @barima
 
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Now that Deck Height is confirmed do the Valves hit the Piston?


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Gets pretty close on the Exhaust side.

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Perhaps this will help.
 
I had missed this post entirely!

@Dool you're the man!!!

This is pretty close to finish!!!
 
All good fun, this goes on the Mill tomorrow, I damaged the thread on the end of the Crank and had to cut off a bit ;) to get it started so now I need to cut the boss back a bit also :cool:IMG_20240111_174254.jpg
3 or 4mm should be enough :rolleyes:
 
Sasa said:
make good use of that 19mm endmill!!!
Click to expand...
I needed a diameter larger than 19, this was done with a Fly Cutter? then the Dremmel ;)
Hopefully less damage than a Valve hitting it.
 
Sasa said:
I had missed this post entirely!

@Dool you're the man!!!

This is pretty close to finish!!!
Click to expand...
The name hid the post, I didn't want to attract attention, less people see this the less see me fail.
 
Measurements are important as is progress ( famous last words!), so in their absence I decided I needed about 4mm taken from the Flywheel boss to get the required amount of thread.
This would have been made in a Lathe of some sorts but mine is too small to hold it comfortably so I bolted it to my Milling machine after some deliberations, talking into account that my limitations may far exceed the cost of having it done by a professional, yet the money they would want was big and my time cheap enough to waste and a new one would be cheap enough anyhow ;)
IMG_20240112_093119.jpg

Using an 8mm end mill bit I cut about 0.25mm down and took about 1.5mm cuts across a 32mm diameter.
3mm took forever šŸ˜• and getting the Swarf off was a challenge in itself.
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But the result appeared acceptable.

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Then I reinstalled it and actually tightened it up ( as I should have done before deciding it needed machining) using a High tech E-Wrench it went a bit further and hey presto I have some thread to spare. :whistle:
Here is the aforementioned E-Wrench.

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It is made more accurate with the addition of a special Socket.

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Cheap and double Hex! how much Torque could it take?

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Look carefully and you can see the marks made by the Socket, I dont know what it means :)

The battery was at half power if that is important :ROFLMAO:
 
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The Moral of that story is,

when taking off the Flywheel with the Puller always leave the nut on the shaft so it doesent Flare!
Saves a lot of trouble :cool:
 
The RE special tool that would enable a Tension wrench to be used effectively is.

part number S-T 27534-2 ( magneto and rear sprocket holding tool ) I wrongly used a 3/8 cordless Rattle gun and am prepared to take the consequences :cool: )

The Magneto/Flywheel puller is S-T 27530-2 ( magneto rotor puller ) I tried a 3 jaw cheapo and then in a vain attempt to reinforce it failed again and eventually decided to do something else while I waited almost patiently for the correct part to arrive.

I have ordered a 1/2" Digital Tension Wrench that covers the complete range of Torques in the Manual, some new nuts and Woodruff keys, eventually I will be able to Hold the Flywheel and Tension it to specs;) But I am not waiting!
 
Dool said:
The name hid the post, I didn't want to attract attention, less people see this the less see me fail.
Click to expand...
So far I'm not seeing that coming! :)
 
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