DS650 blown motor! Need help please! :)
Jul 28, 2010 | 01:39 PM
#1
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Weekend Warrior
Joined: Jun 2010
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DS650 blown motor! Need help please! :)
Hi i have a ds650 and my piston just blew, is it alright to just change the piston and not change the timeing chain and all that? ive been told that just changing the piston might affect the rest of the motor after a while. When i opened the motor were the timing chain is everything looked as if it was new! I am confused as if i should be changing most of the motor or just the piston and piston rings?
Jul 28, 2010 | 02:55 PM
#2
Pro Rider
Has been here a long time!
Has been here a long time!
Joined: Jan 2004
Posts: 1,602
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Never heard of having to replace the timing chain if a piston goes. You really need to pull the head off to see the extent of the damage. If the jug is heavily scored then it will take more than just a piston replacement to get it running again. You could also have valve damage but you wont know until you open it up.
Jul 28, 2010 | 11:32 PM
#3
Range Rover
Has a DS 800 Turbo Nitrous EFI money eating monster!
Has a DS 800 Turbo Nitrous EFI money eating monster!
Joined: Jul 2007
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what do you mean by piston blew? Did it break? or just loose compression? ,
like DSengineer said you need to pull the head and see what happened check the valves to make sure they are not bent and check the head for straightness not warped then check the piston and rings . remember you have a plated cylinder so if you bore it you must replate it
like DSengineer said you need to pull the head and see what happened check the valves to make sure they are not bent and check the head for straightness not warped then check the piston and rings . remember you have a plated cylinder so if you bore it you must replate it
Oct 20, 2010 | 11:29 PM
#4
Weekend Warrior
Joined: Oct 2010
Posts: 1
Likes: 0
head warped work
what do you mean by piston blew? Did it break? or just loose compression? ,
like DSengineer said you need to pull the head and see what happened check the valves to make sure they are not bent and check the head for straightness not warped then check the piston and rings . remember you have a plated cylinder so if you bore it you must replate it
like DSengineer said you need to pull the head and see what happened check the valves to make sure they are not bent and check the head for straightness not warped then check the piston and rings . remember you have a plated cylinder so if you bore it you must replate it
sorry for my english im frenchy but .. if your head is warped and you need to do a shaving job .. how much you cant shave before you need to change de natch on the piston (clearence) because a shave mind 13 millieme ( 0.013) i think or ( 0.0013) i dont no in english but i just want to know .. if i need to change my clearence on the piston ... thank you and sorry for my poor english ( ds 650 2001 engine )
Oct 28, 2010 | 06:27 PM
#6
Trailblazer
Joined: Dec 2009
Posts: 56
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From: Cali
730
Wouldnt mind doin it since my motor is apart for now!
Oct 29, 2010 | 06:46 AM
#7
Range Rover
Keeps busy in the garage building one thing or another.
Keeps busy in the garage building one thing or another.
Joined: Dec 2003
Posts: 195
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There is someone on that goes by Goodsound. You might want to pm him, he had a used cylinder, piston etc...probably in great shape knowing him. These 730 kits are mostly all OMWracing kits. A well proven kit/engine builder...
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Nov 2, 2010 | 12:58 PM
#9
Trailblazer
Joined: Dec 2009
Posts: 56
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From: Cali
730 kit
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