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D14 piston travel
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SpacedMarine
Up north
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November 8, 2019 - 9:02 am
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The piston is Suzuki you just need to shave a bit off the skirt or buy one off rex caunt that's already been done.

I'd just move the big end 1mm out from the centre.Its all theoretical at the minute and would add 2mm total.Im just hoping the rings wouldn't fall out the intake the only way is to try it though  🤣

Bit off topic here though!

What's 7/16 in mm again?

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Bee175
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November 8, 2019 - 9:25 am
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Good luck with your project👍

BSA Bantam B175 1971 and BSA C15 1966

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nickjaxe
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November 8, 2019 - 10:56 am
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SpacedMarine said
The piston is Suzuki you just need to shave a bit off the skirt or buy one off rex caunt that's already been done.

I'd just move the big end 1mm out from the centre.Its all theoretical at the minute and would add 2mm total.Im just hoping the rings wouldn't fall out the intake the only way is to try it though  🤣

Bit off topic here though!  

James moving the big end 1mm...would that be to give in more or less throw.

So you would need to machine 2 new crank outers?

My Bantam video              https://www.you.....jpOFmzRZRI

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SpacedMarine
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November 8, 2019 - 12:23 pm
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nickjaxe said

SpacedMarine said
The piston is Suzuki you just need to shave a bit off the skirt or buy one off rex caunt that's already been done.

I'd just move the big end 1mm out from the centre.Its all theoretical at the minute and would add 2mm total.Im just hoping the rings wouldn't fall out the intake the only way is to try it though  🤣

Bit off topic here though!  

James moving the big end 1mm...would that be to give in more or less throw.

So you would need to machine 2 new crank outers?  

Depends which way you move it.Move it out from the centre you get a longer stroke closer you get shorter.

What's 7/16 in mm again?

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mike p5xbx
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November 8, 2019 - 4:19 pm
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SpacedMarine said
Damn I can only get mine to read 125.Its only on +020 and not been rebored,just had a light hone when I rebuilt it. 

did you check piston clearance and ring gap when you had the engine apart
my D14 is a relatively new re-bore and Hepolite piston with factory spec minimal clearances
looking again at your photo is that with the piston at TDC?
Looks a good bit short

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SpacedMarine
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November 8, 2019 - 4:55 pm
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I did Mike they all seemed to be within tolerance.To be honest I'm not sure that is at tdc. I checked the squish with some solder and the head on and it was about 1.5mm without the head gasket from memory.

I might give it another go with the tester and give it a couple more kicks.Starts and runs fine though.

I bought a new piston and rings as I was struggling to find rings at the time and the end gap on the old rings was enormous!

I therefore have a spare 020 piston 😆

What's 7/16 in mm again?

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