15 replies to this topic

[Domeo_Jones]

Hi all, okay so thinking about getting a spare engine and getting it bored out,1293 maybe but as a rough guess how much does it cost? Also how much do decent pistons cost?

[R1minimagic]

Rebore should be £100 or less

Pistons up to about £450 for Omegas or Powermax around half that

[cliche]

I went for p21253's from Minispares after being recommended them from TMF

[Domeo_Jones]

I went for p21253's from Minispares after being recommended them from TMF

[Domeo_Jones]

Oops, how much were they and are they anygood??

[cliche]

Oops, how much were they and are they anygood??

well engine has been rebuilt and is awaiting placement into the fresh painted shell. All I can say is that Cooperman and many other TMFers recommended them (I spent hours reading threads about piston types/recommendations on TMF)

Oh and got TMF+ discount

Edited by cliche, 08 March 2013 - 04:31 PM.

[Cooperman]

The P21253 pistons, at under £50 each are excellent value and are good for up to 7000 rpm and 11:1 CR.
Allow between £20 & b£25 per bore with £20 being more likely if it's just 0.020" larger.
Then you'll need a crank re-grind at c.£50, main and big-end shells, crank thrust bearings, oil pump, cam followers and timing chain.
Then a full gasket set plus any work needed on the head such as new valve guides, valves (usually just exhausts, valve seat re-cutting and a head surface skim (c.£25)
After doing that you'll have a super engine.

[MRA]

You missed off cam bearings Peter..

[ACDodd]

Costs depend on how the bores are finished. More time, equals more money....


Ac

[MRA]

And oil gallery and core plugs

[Vipernoir]

The last time I had a block bored (+.080 in one go) it was £108 + VAT, and that was nearly two years ago.
While that looks like a lot more than you *can* get it done for, the equipment they use is better than the mobile boring bar that get strapped to the top, and the honing process is also very good.

[MRA]

I charge £135 including a surface, a clean is £25 (hot wash tank only)

[MrBounce]

I got my block rebored from 1275 to 1293 for £80 + VAT - that was last July

[MRA]

Thats one cut and a hone, as you increase in size or offset etc.... then as AC says the cost goes up.

Also some boring machines will NOT cut offset bores, if you need an offset make sure they can do it for you

[1984mini25]

I charge £135 including a surface, a clean is £25 (hot wash tank only)

Just out of curiosity, how much do you charge for a cank regrind? As I know of a friend with a 1275 now in bits that had only done 25k, but unfortunately run low on oil destroying the bearings.