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06-15-2016, 04:49 AM,
#1
Valve clearance check
Hey all,

Been reading the maintenance schedule for the 650 and it indicates a valve clearance check every 6 months at least or 7000k's if they come first..... Every 6 months seems a bit excessive if limited k's are done..

What are your thoughts??

Dave
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06-15-2016, 04:48 PM,
#2
RE: Valve clearance check
i checked mine at 15,000 and one was out of spec. i now have 35,000 so time to check. This winter.there supposed to be noisey so if there quiet better check them.
2007 1100 custom,cobra longs and pods,doubled clutch spring.
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06-15-2016, 09:06 PM,
#3
RE: Valve clearance check
(06-15-2016, 04:48 PM)nick59 Wrote: i checked mine at 15,000 and one was out of spec. i now have 35,000 so time to check. This winter.there supposed to be noisey so if there quiet better check them.
Thanks for that...... I think the 6 month requirement is to keep the service departments in work perhaps.....
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06-16-2016, 02:21 PM, (This post was last modified: 06-16-2016, 02:32 PM by pauli466.)
#4
RE: Valve clearance check
(06-15-2016, 09:06 PM)david_harrisson Wrote:
(06-15-2016, 04:48 PM)nick59 Wrote: i checked mine at 15,000 and one was out of spec. i now have 35,000 so time to check. This winter.there supposed to be noisey so if there quiet better check them.
Thanks for that...... I think the 6 month requirement is to keep the service departments in work perhaps.....
believe it or not the clearances get tighter in time because the valve face wear's deeper into the pocket and the stem stretches, at 35,000 there done seating and stretching so you can adjust to tighter end of the spec now, if done right there will be just a hint of tappet noise and only when hot, when cold you wont hear anything, mine haven't moved since 30,000 to 55,000 as of this winter. i set at 3 thousands intake and 4.5 thousands exhaust nice and quiet. the manual states " for the best performance adjust to tighter end of the spec " don't believe the saying that slappy valves are happy valves because slappy valves will only get slappier and could possibly break a rocker, loose clearances wear things out
Lightbulb dumb bikers don't get to be old bikers
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06-26-2016, 05:49 PM, (This post was last modified: 06-26-2016, 05:50 PM by OregonGuy.)
#5
RE: Valve clearance check
(06-16-2016, 02:21 PM)pauli466 Wrote:
(06-15-2016, 09:06 PM)david_harrisson Wrote:
(06-15-2016, 04:48 PM)nick59 Wrote: i checked mine at 15,000 and one was out of spec. i now have 35,000 so time to check. This winter.there supposed to be noisey so if there quiet better check them.
Thanks for that...... I think the 6 month requirement is to keep the service departments in work perhaps.....
believe it or not the clearances get tighter in time because the valve face wear's deeper into the pocket and the stem stretches, at 35,000 there done seating and stretching so you can adjust to tighter end of the spec now, if done right there will be just a hint of tappet noise and only when hot, when cold you wont hear anything, mine haven't moved since 30,000 to 55,000 as of this winter. i set at 3 thousands intake and 4.5 thousands exhaust nice and quiet. the manual states " for the best performance adjust to tighter end of the spec " don't believe the saying that slappy valves are happy valves because slappy valves will only get slappier and could possibly break a rocker, loose clearances wear things out
Being new here this brings up a related question. I just purchased a 2006 VStar 650 Classic with 21K on the bike. The valves sound OK when warm, but the head makes noise when cold (55-60 degree cold) until it warms up. No history on the bike, but it does ride sweet!

My question is: Should the head make noise when cold and not when at normal operating temperature?

thanks in advance,

Ben
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07-01-2016, 03:03 AM, (This post was last modified: 07-01-2016, 03:12 AM by ddog6900.)
#6
RE: Valve clearance check
(06-26-2016, 05:49 PM)OregonGuy Wrote:
(06-16-2016, 02:21 PM)pauli466 Wrote:
(06-15-2016, 09:06 PM)david_harrisson Wrote:
(06-15-2016, 04:48 PM)nick59 Wrote: i checked mine at 15,000 and one was out of spec. i now have 35,000 so time to check. This winter.there supposed to be noisey so if there quiet better check them.
Thanks for that...... I think the 6 month requirement is to keep the service departments in work perhaps.....
believe it or not the clearances get tighter in time because the valve face wear's deeper into the pocket and the stem stretches, at 35,000 there done seating and stretching so you can adjust to tighter end of the spec now, if done right there will be just a hint of tappet noise and only when hot, when cold you wont hear anything, mine haven't moved since 30,000 to 55,000 as of this winter. i set at 3 thousands intake and 4.5 thousands exhaust nice and quiet. the manual states " for the best performance adjust to tighter end of the spec " don't believe the saying that slappy valves are happy valves because slappy valves will only get slappier and could possibly break a rocker, loose clearances wear things out
Being new here this brings up a related question. I just purchased a 2006 VStar 650 Classic with 21K on the bike. The valves sound OK when warm, but the head makes noise when cold (55-60 degree cold) until it warms up. No history on the bike, but it does ride sweet!

My question is: Should the head make noise when cold and not when at normal operating temperature?

thanks in advance,

Ben
Not sure what noises you're talking about. A tappy valve is a happy valve. Metal expands when warm, so you're clearances could be getting closer causing the valves to get slightly quieter.

Sent from my Nexus 5 using Tapatalk

(06-16-2016, 02:21 PM)pauli466 Wrote:
(06-15-2016, 09:06 PM)david_harrisson Wrote:
(06-15-2016, 04:48 PM)nick59 Wrote: i checked mine at 15,000 and one was out of spec. i now have 35,000 so time to check. This winter.there supposed to be noisey so if there quiet better check them.
Thanks for that...... I think the 6 month requirement is to keep the service departments in work perhaps.....
believe it or not the clearances get tighter in time because the valve face wear's deeper into the pocket and the stem stretches, at 35,000 there done seating and stretching so you can adjust to tighter end of the spec now, if done right there will be just a hint of tappet noise and only when hot, when cold you wont hear anything, mine haven't moved since 30,000 to 55,000 as of this winter. i set at 3 thousands intake and 4.5 thousands exhaust nice and quiet. the manual states " for the best performance adjust to tighter end of the spec " don't believe the saying that slappy valves are happy valves because slappy valves will only get slappier and could possibly break a rocker, loose clearances wear things out
I'm calling BS on this. I've been working on everything automotive for years and nothing "stretches and seats". You should adjust your valves to the median clearances, because like I said above, metal expands when warm. The reason for adjusting clearances is to make sure the valve spends enough time against the seat to transfer heat and cool efficiently. Too loose, it won't transfer heat well and burn. Too tight, and it won't open far enough for intake or exhaust stroke and maybe even break the stem if more than tight enough.

Tappy valve = happy valve, no exceptions.

Sent from my Nexus 5 using Tapatalk
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