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Author Topic: Would you buy a crf450x?  (Read 13760 times)
kurnol
Full Member 2012/2013

Posts: 60
« on: July 18, 2011, 12,07:11 PM »
Had my 07 CRF450X for 4 weeks now. New to trail bikes
Great price $4000, needed new chain and sprockets, battery plus bash plate, still great price!

First weekend out riding others told me valves needed adjusting (only way to start it once hot was to bump it)
Checked and found left intake valve almost closed up, so re-shimmed.
Second weekend riding same problem again, once hot would not start with either button or kick start.
Back in the shed realised the hot start lever not working correctly so stripped and cleaned.
Fired her up and let engine warm up for 10 mins. Stopped and started 3 or 4 times on 2nd/3rd kick (battery still flat from weekend) oh happy times.
Clean up tools etc, give her one more try before bed. On third kick snapped right hand crankcase!!!!! and cover Sad
$700 in parts so far.
Removed engine from frame and sent to Mornington honda to rebuild plus get stainless valves done at same time.

That great price has quickly turned into a not so great price of around $6500!!

On the plus side did love my first 3 outings at trail riding

ps would I buy another? probably not

pps I'm told it will be ready thurs which gives me friday to get her going again ready for Dayleford Saturday.
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Wiggy
Full Member 2013/2014

Posts: 200
« Reply #1 on: July 18, 2011, 12,10:50 PM »
Seen plenty of CRF's with knackered valves, but breaking an engine case from kicking it over is a new one !
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kurnol
Full Member 2012/2013

Posts: 60
« Reply #2 on: July 18, 2011, 12,34:29 PM »
When I took it to the shop the mechanic said he had seen a few with the crankcase cover snapped around the kick start but never the crank case too.
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Zeb Colic
Full Member 2012/2013

Posts: 785
« Reply #3 on: July 18, 2011, 01,25:16 PM »
Quote from: kurnol on July 18, 2011, 12,34:29 PM
When I took it to the shop the mechanic said he had seen a few with the crankcase cover snapped around the kick start but never the crank case too.



Dont ya just love dirt bikes Kurnol .....
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SHE ASKED ME TO WISPER SOMETHING REALLY SEXY INTO HERE EAR AND I WISPERED " BRRRAAAAP "
kurnol
Full Member 2012/2013

Posts: 60
« Reply #4 on: July 19, 2011, 08,37:59 AM »
I love them that much I can almost cry  Cry 
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james c
Full Member 2012/2013

Posts: 143
« Reply #5 on: July 20, 2011, 01,47:29 PM »
Quote from: kurnol on July 18, 2011, 12,07:11 PM
Had my 07 CRF450X for 4 weeks now. New to trail bikes
Great price $4000, needed new chain and sprockets, battery plus bash plate, still great price!

First weekend out riding others told me valves needed adjusting (only way to start it once hot was to bump it)
Checked and found left intake valve almost closed up, so re-shimmed.
Second weekend riding same problem again, once hot would not start with either button or kick start.
Back in the shed realised the hot start lever not working correctly so stripped and cleaned.
Fired her up and let engine warm up for 10 mins. Stopped and started 3 or 4 times on 2nd/3rd kick (battery still flat from weekend) oh happy times.
Clean up tools etc, give her one more try before bed. On third kick snapped right hand crankcase!!!!! and cover Sad
$700 in parts so far.
Removed engine from frame and sent to Mornington honda to rebuild plus get stainless valves done at same time.

That great price has quickly turned into a not so great price of around $6500!!

On the plus side did love my first 3 outings at trail riding

ps would I buy another? probably not

pps I'm told it will be ready thurs which gives me friday to get her going again ready for Dayleford Saturday.
if you managed to get the motor out of the frame (not easy) you have done the hard bit. next time try doing the rest for yourself. get the parts from the states for halve the price and pay yourself for labour in jimmy cans.
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Simmo
Full Member 2012/2013

Posts: 25
« Reply #6 on: July 20, 2011, 10,04:44 PM »
if you managed to get the motor out of the frame (not easy) you have done the hard bit. next time try doing the rest for yourself. get the parts from the states for halve the price and pay yourself for labour in jimmy cans.
[/quote]


I like this way of thinking   Grin
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kurnol
Full Member 2012/2013

Posts: 60
« Reply #7 on: July 21, 2011, 08,40:21 AM »
Quote from: james c on July 20, 2011, 01,47:29 PM
Quote from: kurnol on July 18, 2011, 12,07:11 PM
Had my 07 CRF450X for 4 weeks now. New to trail bikes
Great price $4000, needed new chain and sprockets, battery plus bash plate, still great price!

First weekend out riding others told me valves needed adjusting (only way to start it once hot was to bump it)
Checked and found left intake valve almost closed up, so re-shimmed.
Second weekend riding same problem again, once hot would not start with either button or kick start.
Back in the shed realised the hot start lever not working correctly so stripped and cleaned.
Fired her up and let engine warm up for 10 mins. Stopped and started 3 or 4 times on 2nd/3rd kick (battery still flat from weekend) oh happy times.
Clean up tools etc, give her one more try before bed. On third kick snapped right hand crankcase!!!!! and cover Sad
$700 in parts so far.
Removed engine from frame and sent to Mornington honda to rebuild plus get stainless valves done at same time.

That great price has quickly turned into a not so great price of around $6500!!

On the plus side did love my first 3 outings at trail riding

ps would I buy another? probably not

pps I'm told it will be ready thurs which gives me friday to get her going again ready for Dayleford Saturday.
if you managed to get the motor out of the frame (not easy) you have done the hard bit. next time try doing the rest for yourself. get the parts from the states for halve the price and pay yourself for labour in jimmy cans.

That was the plan but time is not on my side currently, any future rebuilds I will have a crack. 
Your right about getting the motor out, involved lots of colourful language and removal of skin.

Cheers

Kurnol
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broco5

Posts: 75
« Reply #8 on: July 24, 2011, 04,21:09 AM »
ive had a crf 450 2007 model once i changed the valves to stainlees after 4 months i never had to touch them again 4 three years rode the bike into the ground sold it 4 $5000 brought the same thing again 2010 model ive changed the valves now $180 from the states love the bike.Everyone i ride with has some sort of problem no bike is without faults need to stop taking bike to shops as it gets very expensive.
ps. hope you didnt buy my old crf
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kurnol
Full Member 2012/2013

Posts: 60
« Reply #9 on: July 25, 2011, 11,26:13 AM »
Quote from: broco5 on July 24, 2011, 04,21:09 AM
I hope you didnt buy my old crf

I'm too scared to ask  Grin
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