Cylinder re-boring

[Marshy]

Anyone know where to get a lightly damaged cylinder sleeve redone? Is it possible/worthwhile? There are 4 spots; these are the worst two (the others are only into the sleeve, not the bore).

Thoughts??

http://tarmactalk.com/images/bore-1.jpg

http://tarmactalk.com/images/bore-2.jpg

http://tarmactalk.com/images/bore-3.jpg

[Carl-52]

With that you can get the edges knocked off with a quick machine and hone... BUT, where that gouge is it will just create a high pressure zone in the compression and combustion stages... Might have consistent reoccurring head gasket problems. What motor is this?

[BR]

I have no idea what I'm talking about but couldn't you put some weld on it and machine it back so it's smooth?

[simonr]

is it nikasil or steel?

if its nikasil it looks like it needs to be redone. electrosil in Victoria are the best

[Marshy]

No idea. It's an RSV4 motor.

[Carl-52]

Yep Nikasil bores it seems on the RSV 4... you wont get the gouges out by just plating (super thin layer)... im unsure if they can weld up, re grind and then plate... You would never get it into round again i reckon.

[Carl-52]

Try Electrosil and send them some pictures etc. they might just be able to fix it... This wont be cheap tho.

[Marshy]

Thanks Carl!! I'll contact them and see what they say. I imagine it'll be exxy! ;)

[Little Mick]

Good luck and keep us posted Nick. Interest to see what the recommendations are

Sent from my SM-T355Y using Tapatalk

[Linden]

Maybe something like this would be cheaper ... http://www.manheim.com.au/damaged-vehicles/4593285/2013-aprilia-turno-v4-motorcycle?referringPage=SearchResults (only v4 ape there at the moment)

Actually that will go for big dollars ... nice track bike for Older Fat Blokes (not bending down)

[simonr]

a replate is around $500-$600, so if they need to weld it up too, then a few hours more work.

you usually have to send them the piston too, so they can get the clearance right

[Marshy]

Maybe something like this would be cheaper ... http://www.manheim.com.au/damaged-vehicles/4593285/2013-aprilia-turno-v4-motorcycle?referringPage=SearchResults (only v4 ape there at the moment)

Actually that will go for big dollars ... nice track bike for Older Fat Blokes (not bending down)

I've looked into a tuono before, and they are considered not convertible to an RSV4 (there are too many different bits: frame, engine internals, brakes, etc). That said, if it was just the block needed, that might work.

[Marshy]

a replate is around $500-$600, so if they need to weld it up too, then a few hours more work.

you usually have to send them the piston too, so they can get the clearance right

Thanks Simon!! Good info :thumb:

[Kris]

Cost me $500 at Electrosil to just slightly rehone an RSV4 bore. To fix that would be significantly more. Yes, RSV4 bores are Nikasteel/chrome.

Id be throwing it away and getting new cases.

[Marshy]

Thanks everyone. I think it's a 'replace' not 'repair'. Appreciate the insights!

[Nelso]

a replate is around $500-$600, so if they need to weld it up too, then a few hours more work.

you usually have to send them the piston too, so they can get the clearance right

More like $1200 from my experience. How do you get 4 cylinders done for $500-$600? and can I get in on that action too please?