Project bike in the post

Share any projects that you've undertaken, or modifications made to your bike.
SMUDGER
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Re: Project bike in the post

Post by SMUDGER » 24 Apr 2016, 15:30

Had a play today and got head off as you can see just marked piston hoping it's ok
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Liners are fine

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As head is fooked
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So do I second hand head or new engine???

Also for @Lee

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Re: Project bike in the post

Post by SMUDGER » 26 Apr 2016, 18:53

Starting getting there now decided not to give up as I don't admit defeat awaiting delivery of cylinder head and gasket so I can finish up. Since carbs are off ill be deep cleaning them
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rumpoldstilskin
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Re: Project bike in the post

Post by rumpoldstilskin » 27 Apr 2016, 15:07

I'd replace that piston mate just to save this problem becoming a holy piston and bottom end rebuild. Shouldn't be too costly though you'll need it re-boring and honing as that barrel and piston will have worn to each other.

New piston ~£30?
Re-bore around ~£25-40

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Re: Project bike in the post

Post by SMUDGER » 27 Apr 2016, 15:13

Looks worse on photo than it actual is

New piston £30??? Think you need look again rings are £100 a piston

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lee
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Project bike in the post

Post by lee » 27 Apr 2016, 16:37

SMUDGER wrote:Looks worse on photo than it actual is

New piston £30??? Think you need look again rings are £100 a piston

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Fowlers do them for £50.
Quick check and seen loads for €50.
New piston is £60.

https://www.fowlersparts.co.uk/parts/50 ... haftpiston" onclick="window.open(this.href);return false;

I wouldn't be leaving a damaged piston in but its your call. Its impacted a valve and chipped the crown.

Id be looking for a low milage replacement engine or it would be getting broke for spares and buy a new bike.

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Re: Project bike in the post

Post by SMUDGER » 27 Apr 2016, 21:34

So that's £240 on pistons and £200-£280 on rings depending on rebore as let me see pointless doing one

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rumpoldstilskin
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Re: Project bike in the post

Post by rumpoldstilskin » 27 Apr 2016, 22:15

Why are the rings so expensive? Are they an odd size or fancy material?

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lee
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Re: Project bike in the post

Post by lee » 27 Apr 2016, 22:20

Thats why id be looking at a new engine or bike.
What did it cost to buy if you don't mind me asking?


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Re: Project bike in the post

Post by lee » 27 Apr 2016, 22:24

rumpoldstilskin wrote:Why are the rings so expensive? Are they an odd size or fancy material?
Was pretty surprised at £50.
Even ktm are cheaper for mine.

Mind you a piston is £320 compared to the £60 for honda.

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Re: Project bike in the post

Post by SMUDGER » 01 May 2016, 08:52

Wonder if a hammer can straighten these
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