A top end rebuild (valve stem seals, reground valve seats, new piston rings, cylender honing,
new tappets, new seals throughout for my EL250 (same motor as the GPX) cost me $420 in
labour (7hrs)Then there was the parts which brought it up to about 900 including towing to the
mechanics to do the work Mines a twin, not a four, and i only had the top end tweaked.
So yeah, 2500 sounds plausible.
On Fri, 29 Aug 2003 19:14:04 +1000, "Intact Kneeslider" <(E-Mail Removed)> wrote:
>"Brenton Spear" <(E-Mail Removed)> wrote:
>>
>> Nothing has gone bang but it just doesnt seem to
>> go as well as I would have expected.
>
>Carbs balanced? Plugs fresh? Air filter clean? Valve clearances correct? Is
>it making any horrible rattling sounds?
>
>If the answer is yes to all of those, then consider getting it looked at and
>make sure the rattle isn't just from the alternator chain tensioner getting
>confused. Mine used to make a sound which people scared me with by telling
>me it sounds like an awful case of piston slap. I took it to a surly-arse
>mechanic who used to race B-Nines (talk about pushing **** uphill with a
>pitchfork), he cocked one ear to it, pulled the clutch out to get at the
>alternator chain, pushed the tensioner back onto it with his finger,
>reassembled, and that made the noise go away.
>
>> I have a few oil leaks on the bottom end that need
>> to be fixed anyway
>
>Where are they? That motor has some rubber high-pressure oil lines; one up
>the left side, feeding the cams from the oil cooler down on the cases,
>another across the front of the cases, behind the headers... the heat does
>cook the rubber and the lines can fail where they're crimped into the
>banjos. The cam-feed one started to do just that on my Nine while I had it.
>A $25 replacement from a wrecker fixed it.
>
>> What sort of price could I expect to pay for someone
>> else to do the work for me? I am skilled up but time poor 
>
>Half a day to pull the motor out, a day to pull it all down, a day to
>measure up and line up new bits to replace all worn bits, a day to put it
>all back together, and another half a day to put it back in the bike and get
>it running right again. ~30 hours in labour alone, and at $60/hour (more if
>it's a rocket scientist tuner bloke), plus parts, don't expect much change
>out of $2500. That way you'll be poor in both time and money...
>
Mike.S
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(ex CB250 K2, now EL250)
http://grout.dyn.dhs.org