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dazza1968
13-09-2010, 07:03 PM
Hello now i know no anything about rebuilding a motor bike so does anyone have a guide to top end rebuild $ wise and bottom end rebuild $ wise. urgent replies please as i am looking at bike shortly

and is there anyone who could do it i mean rebuild it either way you could recommend :eek::eek::eek:^_^

Regards Dazza

RT
13-09-2010, 07:26 PM
i thought xr's had bullet proof engines, so i personally would be weary of one needed a rebuild unless you had the skill and tools to rebuild it yourself. I think i would be cheaper to find one already running and in half decent nik.......

PaulMac
13-09-2010, 07:54 PM
What year Dazza? These bikes are fairly reliable but high mileage motors might need valve freshen up, cam chain and piston/ rings. From memory you don't shim the valves as they have screw adjustable tappets. Budget 500 to 800 for the top end if a mate spins the spanners cheap. Bottom ends are reliable but as with any four stroke big dollars can be needed if oil isn't changed fairly regularly. Top end isn't too hard to do but I leave cranks to the workshops. I strip the clutch and magneto and just take the bare bottom end to a workshop to get them to do the crank.Ask Smitto. He's doing a motor in his WRF250 ATM.

dazza1968
13-09-2010, 08:05 PM
its a 97 model but he says its low on compression .......................

karri
13-09-2010, 08:06 PM
What are you looking at this time? I mean you only just sold a bike why an other one?

ReCon
13-09-2010, 08:11 PM
What RT said, I have seen XR's beaten to oblivion and not need any engine work! Pay a dollar extra and buy one that goes.
Use your excess cash for a good service and some fun bits. Great ol' bike, just gotta learn to kickstart the bastard when it's cold , or you drop it!! ;)

dazza1968
13-09-2010, 08:18 PM
Its really for clayton as he is hell bent on getting a xr, i said to him move on and get a crf450 as he has so much choice and the xr's seem overpriced . from his end he has had 2 and thinks they are the ducks nuts LOL .

If i wanted another bike i may have looked at the 06 ktm 450sx done 30 original hrs for only 3,500 now that sounds like value (IMHO)

Clay had a ball and as for padman broken collar bone in 2 places so its floating around abit poor bugger

Regards Dazza

karri
13-09-2010, 08:23 PM
Ah k. Yeah. Clay said he wanted an xr. He would probably get a good crf for the price of a rebuild

dazza1968
13-09-2010, 08:28 PM
Ah k. Yeah. Clay said he wanted an xr. He would probably get a good crf for the price of a rebuildThats what i said to him ,, but he is worried about the maintenance bill on them whereas he can throw this into the shed and do the oil accassionally

regards dazza

smitto
13-09-2010, 08:34 PM
my guess is its either rings (maybe) but likely a cracked head- between the valves, like on a xr 250 i had, or just incorrectly adjusted/burnt valves.

Not sure if it was a problem with the 400's but the 250's can get real hot, and i was told that while they happily run with small cracks( apart from idleing a bit lean), they eventually lose enough compression to run. Mine cracked the valve seat in half.

Second hand heads are pretty cheap 350 400ish from memory, and valves 70ish.

All stuff you could do yourself with a manual. Just need a torque wrench.

Oh and FedEx tried to drop my wrf parts off today....sweet. And i have wed off!

MattyA
13-09-2010, 08:35 PM
yeah i have all the tools for rebuliding bike engines, and could prolly do it if you supply everything, i have a 2&1 roster so i could prolly do it on one of my breaks.
Smitto knows a fair bit about them and lives round the corner from me, Ive done similer engines so it wouldnt be hard.

plus we like beer...

dazza1968
13-09-2010, 08:37 PM
my guess is its either rings (maybe) but likely a cracked head- between the valves, like on a xr 250 i had, or just incorrectly adjusted/burnt valves.

Not sure if it was a problem with the 400's but the 250's can get real hot, and i was told that while they happily run with small cracks( apart from idleing a bit lean), they eventually lose enough compression to run. Mine cracked the valve seat in half.

Second hand heads are pretty cheap 350 400ish from memory, and valves 70ish.

All stuff you could do yourself with a manual. Just need a torque wrench.

Oh and FedEx tried to drop my wrf parts off today....sweet. And i have wed off!cool Smitto hope it all goes well

dazza1968
13-09-2010, 08:44 PM
yeah i have all the tools for rebuliding bike engines, and could prolly do it if you supply everything, i have a 2&1 roster so i could prolly do it on one of my breaks.
Smitto knows a fair bit about them and lives round the corner from me, Ive done similer engines so it wouldnt be hard.

plus we like beer...hey that sounds like a plan will keep you updated and thanks regards dazza

smitto
13-09-2010, 08:56 PM
hopefully your not paying more than $1500 mate

dazza1968
13-09-2010, 09:01 PM
hopefully your not paying more than $1500 matenope 1400 was what he was going to offer but 1500 tops so he figured 2,,500 wasnt too bad after rebuild etc if the rest is good .

REgards Dazza

smitto
13-09-2010, 09:07 PM
exactly what i was thinking. good luck.

dazza1968
13-09-2010, 09:11 PM
will keep you posted

Regards Dazza

dirt_infected
13-09-2010, 11:07 PM
If he likes XR's tell him to get a DRZ.

If its the reliability he likes a CRF will leave him cold- Honda lost their way when they stopped making XR's