How To: Measure Valve Clearances - Page 22 - Triumph675.Net Forums
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post #211 of 219 Old 04-08-16, 11:18
sauceman101
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Originally Posted by sauceman101 View Post

Exhaust (#1) (#2) (#3)
Left: 0.330 - 0.279 - 0.254
Right: 0.305 - 0.279 - 0.254

Intake (#1) (#2) (#3)

Left: 0.152 - 0.203 - 0.203
Right: 0.152 - 0.305 - 0.203

My VIN is in the 35xxxx, therefore my specs should be:

Intake valves are between 0.10 and 0.20mm
From VIN 337510 to 381274: 0.325-0.375mm
Finally got the shims earlier this week and got it all back together, as others have mentioned aim for the looser end of the spectrum, here are my resultant clearances after getting it all back together.

Exhaust (#1) (#2) (#3)
Left: 0.350 - 0.330 - 0.330
Right: 0.350 - 0.330 - 0.305
Intake (#1) (#2) (#3)

Left: 0.152 - 0.203 - 0.203
Right: 0.152 - 0.250 - 0.203

Even with the correct calculations I still have one exhaust too tight and the intake too loose. Much better than before, I'm assuming the error is caused by the "hole" the valve or shim begins to press into the shims, measuring with a micrometer will only get the widest part of the shim, and a few thousandths, maybe even a hundredth or two could be lost in that little bit. Valve train sounds much smoother, as does idle.

Off topic, after letting it idle for five minutes with occasional revs that were fine, I began revving it and it wouldn't go beyond 8k rpms, similar to the ex-up freezing. Is there anything else that can cause that? Shutting the bike off and immediately restarting, I was then able to rev normally and freely. Something electrical? ignition? Fueling issue? something loose, bad ground somewhere? any input or direction to a thread relating to the issue would be great!

Tornado Red, 2008 Triumph D675

Last edited by sauceman101; 04-08-16 at 11:19. Reason: switched Ex left and right clearances
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post #212 of 219 Old 12-24-16, 09:52
sketch123_2008
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My bike has done close to 15k miles so I thought best to check my gaps and when I measured them I found the inlet side was all within tolerence but I found all 6 valves on the exhaust side to be well out of tolerance some of them as low as 0.178 with a tolerance range of 0.275 -0.325.
So I worked out the new shim sizes I'd need, I worked them out to fit in the middle of the tolerance range so 0.3. I refitted the camshafts , torqued the cam chain ladder down to 10nm, refit the tensioner , cycled the engine over a few times with a ratchet and then re took my gap measurements.

I somehow ended up with every gap measuring the same 0.229 which made no sense to me. I re took a couple of measurements of the inlet side and found that it had got tighter since I last checked it , which made no sense as I have not changed anything from the inlet side.

As anybody had anything similar before ?
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post #213 of 219 Old 12-24-16, 09:59
sketch123_2008
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My bike has done close to 15k miles so I thought best to check my gaps and when I measured them I found the inlet side was all within tolerence but I found all 6 valves on the exhaust side to be well out of tolerance some of them as low as 0.178 with a tolerance range of 0.275 -0.325.
So I worked out the new shim sizes I'd need, I worked them out to fit in the middle of the tolerance range so 0.3. I refitted the camshafts , torqued the cam chain ladder down to 10nm, refit the tensioner , cycled the engine over a few times with a ratchet and then re took my gap measurements.

I somehow ended up with every gap measuring the same 0.229 which made no sense to me. I re took a couple of measurements of the inlet side and found that it had got tighter since I last checked it , which made no sense as I have not changed anything from the inlet side.

As anybody had anything similar before or know why this can happen I'm pretty confindent I put it back together properly and to the manual.
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post #214 of 219 Old 12-24-16, 10:33
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My bike has done close to 15k miles so I thought best to check my gaps and when I measured them I found the inlet side was all within tolerence but I found all 6 valves on the exhaust side to be well out of tolerance some of them as low as 0.178 with a tolerance range of 0.275 -0.325.
So I worked out the new shim sizes I'd need, I worked them out to fit in the middle of the tolerance range so 0.3. I refitted the camshafts , torqued the cam chain ladder down to 10nm, refit the tensioner , cycled the engine over a few times with a ratchet and then re took my gap measurements.

I somehow ended up with every gap measuring the same 0.229 which made no sense to me. I re took a couple of measurements of the inlet side and found that it had got tighter since I last checked it , which made no sense as I have not changed anything from the inlet side.

As anybody had anything similar before or know why this can happen, I'm pretty confident I installed everything correctly and to the manual
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post #215 of 219 Old 12-24-16, 18:01
Gsatterw
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Quote:
Originally Posted by sketch123_20082016 View Post
My bike has done close to 15k miles so I thought best to check my gaps and when I measured them I found the inlet side was all within tolerence but I found all 6 valves on the exhaust side to be well out of tolerance some of them as low as 0.178 with a tolerance range of 0.275 -0.325.
So I worked out the new shim sizes I'd need, I worked them out to fit in the middle of the tolerance range so 0.3. I refitted the camshafts , torqued the cam chain ladder down to 10nm, refit the tensioner , cycled the engine over a few times with a ratchet and then re took my gap measurements.

I somehow ended up with every gap measuring the same 0.229 which made no sense to me. I re took a couple of measurements of the inlet side and found that it had got tighter since I last checked it , which made no sense as I have not changed anything from the inlet side.

As anybody had anything similar before or know why this can happen, I'm pretty confident I installed everything correctly and to the manual
Any oil/grit on shims/gauges? Can make a large difference.
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post #216 of 219 Old 05-04-17, 17:25
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Awesome tutorial! was super easy taking everything out until I got to the valve cover, that POS was suctioned on had to whack it a couple times with a rubber mallet until it budged.

Ok, so I've just done the valve clearance check on my '09 Daytona @ 28,000km and wondering if I should change the shims for the following even though most of them are technically within tolerance...except for #1 tight exhaust. Should I change them all to around middle range? It would put all the EX on the loose side, which I read would be better than where it currently is, but part of me wants to be lazy and put her back together since its not way out of spec lol

IN #1 (0.20/0.20) #2 (0.18/0.18) #3 (0.20/0.20)
EX #1 (0.30/0.32) #2 (0.32/0.32) #3 (0.32/0.32)

Also, you guys converting the shims to inches when measuring with a micrometer, i can't for the life of me find a metric one (at least not cheap) and I live in Canada where we're supposedly metric lol Not a big deal, just curious...
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post #217 of 219 Old 05-04-17, 17:33
MGFChapin
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Working on bikes has weaned me from my procrastination habit I had in school. Do it now so you don't have to later.

Pretty much any digital caliper can switch between imperial or metric. I did mine in mm. I have a nice Mitutoyo but for example, this one is $17 and does both: https://www.amazon.com/Neiko-01407A-...gital+calipers
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post #218 of 219 Old 05-05-17, 08:30
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Quote:
Originally Posted by waitin4BOOST View Post
... Should I change them all to around middle range?
I'd say yes. If you do one it's not much more work to do the rest. Then next check there shouldn't be a need to remove the cam.

Sent from my XT1096 using Tapatalk
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post #219 of 219 Old 05-05-17, 11:16
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Alright, being lazy is a no go Thanks for the push lol

Now i'm hoping I can swap the shims around with whats there.
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