No spark on left side of motor

[Big Rich]

.03 to .08 is the standard clearance. That .10mm is what GSJack recommends and what I use for the exhaust.

And sorry for that "step up" phrase earlier. It's what we use at the machine shop I work at when shimming carbide inserts.

Edited: too many zeros!

[gsJack]

Suzuki spec is .03-.08 mm (.001-.003") and I leave my intakes at that setting, no need to change them.  I set exhausts at .08-.13 mm (.003-.005") now and they hold well at that setting.

Your intakes look good without change and your exhausts probably need 2 shim sizes smaller, can't tell for sure until you get some clearance you can measure. 

[Nocluejoe]

Really I should leave the exhaust shims the way they are? Wouldnt I run into issues again shorty down the road?

When I get home I will put the shim back in and work on the exhaust valves

[gsJack]

No, leave intakes as they are not exhausts.  I never changed an intake shim in my 97 GS for 80k miles and the intakes in my current 02 have the same shims in them that came from the factory at 100k miles now.  Intake valves run much cooler than exhaust valves and require little if any attention, at least that's been my experience.

Exhaust valves set at the minimum Suzuki .03 mm spec run too hot and begin receding into the seats over time and miles.  They need more cooling seat time provided by the larger gaps we're using.  Your exhausts are too tight and need shims 2 sizes smaller at least to give new clearance specs, maybe more after you get enough clearance to measure.

[Nocluejoe]

Okay got the right exhast shim out its 275 so you think I should go down to 265? Or lower

[Nocluejoe]

Also with the shim out on #2 its spinning freely so hopefully that means I dont have a burnt valve?

[bombsquad83]

I don't think it gaurentees that the valve isn't damaged, but it's a good sign and it means your bucket isn't stuck.  Size 265 would be a good start.  It might not be sufficient.  You will just have to measure once you get the new shim in.  Once you have the shims set properly, then it will be time to recheck compression.

[Nocluejoe]

Okay im probably going to get a 265 and a 260 just imcase can always save it for later.

Im having trouble finding that washer that goes inside the mixture screw in the carburetor it seems to be a 2mm however the the hole is much larger than a regular washer

[Nocluejoe]

So I found a chart and since I didn't have any clearance with my old shims of 275 I'm think 260 might be to big still according to this chart to get desired .10 even tho I will be a little less than .10 I would need a shim of 2.45 am I correct in thinking this way?

[attachment deleted by admin]

[Big Rich]

I just woke up and am still seeing fuzzy.....but that doesn't make any sense to me.

Joe, if your valve clearance was really tight with a 275 shim (which is actually 2.75mm thick), then lets just guess that you valve clearance was at .02mm. Minimum clearance is .03mm, so a 2.65 shim would result in .12mm clearance.

Try checking it again after getting a 265 shim in there. It might be good, or you may need a 260 shim. But a 245? I couldn't imagine needing that already.

[Nocluejoe]

I just woke up and am still seeing fuzzy.....but that doesn't make any sense to me.

Joe, if your valve clearance was really tight with a 275 shim (which is actually 2.75mm thick), then lets just guess that you valve clearance was at .02mm. Minimum clearance is .03mm, so a 2.65 shim would result in .12mm clearance.

Try checking it again after getting a 265 shim in there. It might be good, or you may need a 260 shim. But a 245? I couldn't imagine needing that already.

Yes a 260 will result in the minumum or just above it but everything I see says run exhast at .10?

[Big Rich]

How do you figure a 260 will put you at the minimum?

[bombsquad83]

For some odd reason, that chart is mixing mm and inches.  The numbers across the top are in inches it seems.  Just try the 265 and see where it puts the clearance.  If it's less than .10 mm clearance, then step it down one more to the 260.

[gsJack]

I got a nice ride in today instead of worrying about your shims.    So if my memory is correct you have 275 shims in both exhausts? 

In checking your valves you couldn't get a .038mm feeler in #1E but the bucket turned so you had some minimum clearance less than the feeler.  A 265 should give you .10mm additional clearance putting it nicely into the .08-.13mm desired range.

Also a .038mm feeler wouldn't fit in #2E and the bucket wouldn't turn with shim in but did turn after shim was removed.  Good news, the bucket is OK and wouldn't turn because of the shim was too big causing valve to be open when cold.  In effect a negative clearance so 2 shims smaller will not give .10mm clearance and it probably will need a 260 shim, 3 sizes smaller.

I got in the habit of picking up a couple more to make sure.  In this case I would get the 265 and 260 shims plus a 255 and 250 in case needed, if not needed this time they will probably be used next time you check valves.

[Nocluejoe]

I got a nice ride in today instead of worrying about your shims.    So if my memory is correct you have 275 shims in both exhausts? 

In checking your valves you couldn't get a .038mm feeler in #1E but the bucket turned so you had some minimum clearance less than the feeler.  A 265 should give you .10mm additional clearance putting it nicely into the .08-.13mm desired range.

Also a .038mm feeler wouldn't fit in #2E and the bucket wouldn't turn with shim in but did turn after shim was removed.  Good news, the bucket is OK and wouldn't turn because of the shim was too big causing valve to be open when cold.  In effect a negative clearance so 2 shims smaller will not give .10mm clearance and it probably will need a 260 shim, 3 sizes smaller.

I got in the habit of picking up a couple more to make sure.  In this case I would get the 265 and 260 shims plus a 255 and 250 in case needed, if not needed this time they will probably be used next time you check valves.

I'll be out there again soon enough 

Okay I will check with the shop and see what they have hopefully they have them

[Nocluejoe]

okay left side has a 2.60 shim and has a clearance of 1.2 is that okay or should I put a 2.65 in there?

Right side has a 2.55 and the clearanve is .8 with a little extra put wont fit a 1.10 I assume this shim is fine?

I couldnt order a 2.50 they were out and needed to order it and would take a few days

[Big Rich]

Do you mean the left side is at ".12mm" and the right side is at ".08mm"? If so, I'd run them like that.

[Nocluejoe]

Yes I do okay I will run it like that thanks you

[Nocluejoe]

120-130 compression on both sides cold haven't done hot

Spark plugs are working like a charm again

More "power" I don't feel like my bike is going to stall

But the biggest plus to this.... No more hanging idle seriously this made the bike run solo much better and I'm glad thanks again to everybody that helped!

[bombsquad83]

  Glad to help!  Good job wrenching.