Aprilia SXV 4.5 Engine Rebuild Run-In Period

[jimmyRS]

Hi everyone,

Have just got my SXV back from the garage after a full rebuild (new crank, bearings, conrods, pistons, rings) but using same barrels.

Have seen that people who regularly race these just seem to rebuild them then race them? Although i doub't they often change the cranks... I won't be racing mine, purely road use - do i need to run the engine in? If so for how many miles?

Thanks

[Wafer_Thin_Ham]

Ask your engine builder their opinion.
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[jimmyRS]

guy who built it says 500 miles of half throttle max... thats a long time for such a highly strung engine imo.

[Wafer_Thin_Ham]

[Copycat73]

[jimmyRS]

i do trust his advice its just these things are track toys - and from what i hear about rebuilding before race seasons etc no one mentions running the thing in..

guess ill stick with his advice if noone has any other advice and reasoning

cheers!

[P.]

What I would do, make sure its warm, ride it as intended just not massively high in the RPMs as these are pretty much grenades.

[Irn-Bru]

Personally I would sell it and buy a more reliable bike That's what my mate did, albeit his was a 550 and I think one of the heads cracked, he sold it and got a 690 SMC, heavier and maybe a bit slower but on the road who cares.

(Would stick to the builders advice, if he offers some sort of a warranty you'll want to be careful about it)
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[CHR15]

ride it gently till its up to temp.

10 minutes at 3k below redline.
10 minutes at 2k below
10 minutes at 1k below

drop the oil and filter - there will be little bits of shit floating around that'll get caught as its broken in, presumably it also blew up quite badly before it was built?

use as normal.
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