Im wondering how much materials are costing? Ive got an 05 crf450r. The bike is due for a top end and im wondering if i should go all out and do the piston. If the top end is due how long can I expect the bottom to last. I dont race just ride desert and some track. Thanks
Valve jobs/ Top ends. How much are they costing you guys?
Started by blake505, Feb 01 2012 10:01 PM
13 replies to this topic
Posted 01 February 2012 - 10:01 PM
Im wondering how much materials are costing? Ive got an 05 crf450r. The bike is due for a top end and im wondering if i should go all out and do the piston. If the top end is due how long can I expect the bottom to last. I dont race just ride desert and some track. Thanks
Posted 01 February 2012 - 11:53 PM
a mod head shop quoted me like $650.00. that was for new valves and gaskets, labor, complete disassembly of my head, clean everything and reseat the valves. basically refurbish the head.
actually they had experience with hondas and told me that trx 450 quad valves are the best bet.. they last longer and hold up to more abuse
actually they had experience with hondas and told me that trx 450 quad valves are the best bet.. they last longer and hold up to more abuse
Posted 02 February 2012 - 07:36 AM
Do the work yourself and save! Including a new piston/cam chain/ Kibblewhite valves/springs/and getting the seats cut it cost me $400 tax in. I aslo did the cam chain guides and cam chain tensioner etc.
Posted 02 February 2012 - 07:58 AM
www.bigborethumpers.com
check out the prices on the read to run heads up upgraded valves. Add some gaskets, maybe a piston and there you go.
check out the prices on the read to run heads up upgraded valves. Add some gaskets, maybe a piston and there you go.
Posted 02 February 2012 - 03:25 PM
Did a piston myself for about $150. If you do the work yourself, and have a local machine shop cut the seats (if needed), then you could probably do a complete top end including new intakes for ~$350.
Posted 02 February 2012 - 10:23 PM
Thanks for the info guys!! And I welcome more ideas if anyone else has any!!
Posted 03 February 2012 - 08:55 AM
Seats cut 80-150
Valves: 120
Guides: 50+ install (you can do this yourself prior to the valve seat cut)
320.00 max
Usually the exhaust valves just need to be re-ground.
Valves: 120
Guides: 50+ install (you can do this yourself prior to the valve seat cut)
320.00 max
Usually the exhaust valves just need to be re-ground.
Posted 04 February 2012 - 08:48 AM
Kibblewhite valves and springs $160
Piston and rings $125
Gaskets $50
valve seats cut $60
Around $400-ish for a pretty fresh and durable top end.
Piston and rings $125
Gaskets $50
valve seats cut $60
Around $400-ish for a pretty fresh and durable top end.
Posted 04 February 2012 - 05:02 PM
How hard is it to install the valve guides? Do they have a stop or is the height something you have to measure?Thanks,
FS
FS
Posted 04 February 2012 - 09:47 PM
You can build a brand new '08 head, with all new OEM valves, springs, seats, keepers and exhaust studs for less than $500. Sell your old complete head on ebay for $150 and you are looking at less than $350, out of pocket. This greatly reduces the chances of a machinist botching the job and costing you even more money.
Posted 06 February 2012 - 05:25 PM
CamP, on 04 February 2012 - 09:47 PM, said:
You can build a brand new '08 head, with all new OEM valves, springs, seats, keepers and exhaust studs for less than $500. Sell your old complete head on ebay for $150 and you are looking at less than $350, out of pocket. This greatly reduces the chances of a machinist botching the job and costing you even more money.
I am actually doing this right now, but am considering rebuilding my '05 head for a back up. I haven't made up my mind if it is worth it or not to even fool with it. If the new OEM parts '08 head lasts like my original, I won't be needing one for a while.
Posted 08 February 2012 - 08:32 AM
Local shop charged me $450 for completly rebuilding my head with all new OEM stuff. That price was for me just bringing in my head. I see alot of guys just dropping there bike off at the shop and getting charged another $400 in labor for a top-end rebuild instead of taking thier heads off them selfs.
