SV 650 Big Bore kits?

I took a different route with mine, going on the theory a replacement std motor can be bought for less than the cost of gaskets, shells etc when doing the bottom end.

it had done about 7k i think when i fitted 700cc, flowed heads, inj cams and flatslides, after a full season + it still makes the same as svracers and the flats give it a bit more torque and bottom end drive.

its just the gamble of not lunching the topend if it does let go.

Originally Posted by Robw#70

I took a different route with mine, going on the theory a replacement std motor can be bought for less than the cost of gaskets, shells etc when doing the bottom end.

it had done about 7k i think when i fitted 700cc, flowed heads, inj cams and flatslides, after a full season + it still makes the same as svracers and the flats give it a bit more torque and bottom end drive.

its just the gamble of not lunching the topend if it does let go.

Pssst! You forgot to mention it's for sale?

cheers, just need to remember where i left it, not seen it for a while

Originally Posted by Knaapie

Sorry to dig up this old topic again. If you would like to mount a 700cc kit on the SV, does it matter how many mileage the bike/engine has done already? Not much of a mechanic myself, so I would reason it doesn't make a whole lot of difference. The cilinders are enlarged, so engine wear is eliminated... Or am I missing other important engine parts here?

speaking of digging
i'm the one who ultimately bought it and had it placed.
also had a powercommander installed and i'm happy with the result.
bhp 82, torque 74 an increase of resp. 5 and 9.

just one thing is wondering me, the top-speed has decreased with about 15-20 km.
any of you have an idea why?

[yorkie_chris]

Originally Posted by lylej

It comes down to wether you tell them or not really, say for example your in an accident where the police need to be involved and your machine taken . . if you havent told them your not covered, not sure if thats driving without insurance too??

As for servicing, if you need some parts that have changed in the engine and the like your usuall service price shurely would go up, because it would not be the same amount of work to perform if all wasnt fine and dandy in the engine itself.

Whats the chances of them measuring the bores? (unless you put a big SVR700 sticker on it...)

Service price is the same, I would be tempted to reduce oil change intervals slightly though.




This is something which I've been mulling over, as I've a spare engine or 2 kicking about...
What about the JE 84mm pistons for the busa? They're cheaper than a set of 84mm wisecos meant for the SV, and you get 4 of them.

[northwind]

IIRC they're heavy, and you still need the gaskets (oh, to answer your question on SVR it was http://www.wiseco.co.uk/. I got that price ages ago though)

Very interesting reading fellas

[yorkie_chris]

Is that sarcasm or what?

Originally Posted by yorkie_chris

Is that sarcasm or what?

No way i was being 100% serious

[yorkie_chris]

Originally Posted by northwind

IIRC they're heavy, and you still need the gaskets (oh, to answer your question on SVR it was http://www.wiseco.co.uk/. I got that price ages ago though)

Figured you'd need gaskets anyway.

Does the head gasket protruding into combustion chamber prove a problem when overbored?

Anyone know how heavy they are compared to stock?

p.s my main worry is compression ratio, I don't want to have to run it on methanol! (as much as I like the smell lol)