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Help for valve clearance

Started by tderida, March 13, 2019, 05:49:05 AM

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tderida

Hi Folks,

I was just open the valve cover to change the poor old valve cover gasket that leaks much, I go for check the valve clearances.
I think the intake valves are in tolerance  but  the exhaust side are pretty loose.
Unfortunately I didn't have the valve shim tool and the shipping will take a month to arrive, I doubt if the actual valve clearances ok me to ride the bike for a time?

What would you advice? Wait for the parts or could I hit the road?

FJ Flyer

I haven't looked at the specs in a while, but, in general, the concern is that the clearances get too tight.  I don't think being on the loose side is a critical issue.  Other smarter than I will surely chime in.
Chris P.
'16 FJR1300ES
'87 FJ1200
'76 DT250

Wear your gear.


Firehawk068

If those measurements are accurate, then just one of your Intake valves is slightly loose, and three of them are at the tight end of the acceptable range. Most of your exhaust valves are slightly loose. One of them is in the acceptable range.

Slightly loose is OK...............You may hear a slight tapping or ticking sound from the valve operation, but your engine will operate happily.

These clearances will tighten up over time as the valve/seat wears. (the shim doesn't wear)
What you DON'T want are clearances that are too tight.........This will lead to the valves not closing all the way, or for long enough duration, which could lead to burnt valves (especially the exhaust valves)

If you are confident that your measurements were correct, I would just put the cover back together and ride it till the next valve-clearance check interval..........You should be good to go. :good2:
Alan H.
Denver, CO
'90 FJ1200

Pat Conlon

1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

ZOA NOM

Loose is ok, tight is bad (for valves). You'll be fine.
Rick

Current:
2010 Honda VFR1200 DCT (Full Auto!)
1993 FJ/GSXR 1200 (-ABS)
1987 Porsche 911 Carrera (Race)
1988 Porsche Carrera (Street)
Previous:
1993 FJ1200 (FIREBALL)
1993 FJ1200ABS (RIP my collar bone)
1986 FZ750
1984 FJ600
1982 Seca

tderida

Quote from: Pat Conlon on March 13, 2019, 11:30:47 AM
Don't forget the valve cover bolt grommets:

http://rpmracingca.com/proddetail.asp?prod=2GH-1111G-00-00&cat=39
Thanks Pat, the cover bolt seals are stone hard, definitely  I need to change them.

I decide it's ok to ride with that clearances till next maintanence. I apreciated all for your replies.