Holy Cylinder Block!

General discussion about Street two-stroke Suzuki motorcycles.

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Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

Suzukidave wrote:he should have centered the bore instead of going so off ... in my opinion :shock:
You mean the original bore or the re-bore? Don't boring machines centralise themselves and stick with just enlargening the previous bore?

Is it possible to have them bored off centre? If I had noticed before having it rebored that it was skewiff, I could have gone that way. Never seen liners that far off centre before...part of the production method no doubt. Some worker must have had a bit too much saki the previous night :D
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Alan H
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Re: Holy Cylinder Block!

Post by Alan H »

I suppose it could have been worse.
It could have been mine........ :roll:
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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Suzukidave
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Re: Holy Cylinder Block!

Post by Suzukidave »

With the cylinder off the engine put on the head and head gasket ... see how well the head domes and gasket are centered with the current bore .
the older i get the faster i was
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

^ Roger.
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

Man...trying to find a decent cyclinder block isn't easy online :roll: Sellers don't seem to show any photos of the bores and/or don't know the sizes :(
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Suzukidave
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Re: Holy Cylinder Block!

Post by Suzukidave »

Do you have a Facebook account ? there are a bunch of nice GTers living in the UK that are on this site maybe they can help ya out locating a cylinder block in good shape https://www.facebook.com/groups/26261717446/" onclick="window.open(this.href);return false;
the older i get the faster i was
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Suzukidave
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Re: Holy Cylinder Block!

Post by Suzukidave »

How did the test go putting the gasket and head in place ?
the older i get the faster i was
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

Suzukidave wrote:How did the test go putting the gasket and head in place ?
I've only got the head and block with me here at home, the gasket's in the garage 100 miles away. I'll have to wait until the weekend to check it out.

I've got my eyes on a motor, just waiting to see if It's viable to get it sent over from Japan, but I'll check out the FB page...thanks for the link :up:
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

Finally..........

Image
Image
Image
Image
Image

Looks like the answer is...not very well at all
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Suzukidave
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Re: Holy Cylinder Block!

Post by Suzukidave »

I feared the machine shop didnt do you a favor boreing the cylinders so far off center :?
the older i get the faster i was
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

Wasn't it Suzuki that got them out of position* in the first place? All the borers I've seen work from the centre of the cylinder they are re-boring? I can't see how they can bore ...what would be..off centre of the original bore :? When you turn up with any cylinder set up, they don't ask if you would like the rebore 2 thou to the left or right do they? They just work with what they have....and the bore ends up a larger diameter but the centre is always the same.



* In relation to the block. It seems to me that it's the block that's out of shape....not the sleeves.
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

I would have thought the problem is when the cast block is drilled for the studs and it's the stud holes that have been drilled slightly skewiff.
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

Check out this vid, how could this tool bore off-center and still end up with a perfectly round bore?

https://www.youtube.com/watch?v=ZXQzXSoyIDI" onclick="window.open(this.href);return false;
Drewski
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Re: Holy Cylinder Block!

Post by Drewski »

'Found this pic of the block before the rebore.....check out the lopsided sleeve.

Image

I can't nderstand how I missed it :roll:
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Suzukidave
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Re: Holy Cylinder Block!

Post by Suzukidave »

Wow !! i need to take back blaming the machine shop as it sure looks like it all started right at Suzuki mfg :oops:
the older i get the faster i was
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