How much do engine rebuilds normally cost?

[masterchop]

How much should I expect to pay.

I have a 250 quasar engined bike with nearly 40k.

Haven't got much free cash for a few years but have a new job that only demands about 40 miles a week.

So I would like to try and get another couple of years out of her.

Is an engine rebuilt worth it?

What does it consist of.

[Deeping]

what makes you think it needs one?

[GTscootz]

Its not always about the total mileage on a motor but the way its been ridden. Know of Quasar engines with higher mileage that have never been completely rebuilt

[gn2]

To have a 250cc single cylinder engine professionally stripped, inspected and rebuilt with any required new components would probably cost more than a replacement engine.

[masterchop]

I don't know or think that it needs a rebuild. I was just thinking at 40k it might need a serious looking at. Not sure what signs to look out for that would suggest that kind of action.

[mightbesane]

If your compression is good and you're not burning oil, keep up with your regular maintenance and keep on truckin'.

[alicethomas]

Does it consume oil? Swarfs in the oil? Power loss?
Did anyone see material faults with a borescope (through the spark plug bore)?
If not, why do a rebuild!?

[pikey]

Buy a second hand engine off ebay when and if you need it

[Funkycowie]

on my old B125 a tiny bit of metal came off in the cylinder and it lost compression that to fix alone cost £500 (have no idea why I bothered fixing it).

[Dave Weller]

Water cooled engines these days last much longer, use good quality oil and change it as required. It will run many miles yet