Probably a really stupid question

I've used the zip tie method posted by Ness,easy as could be.

Is this special shim reoval tool still available?

khungerf wrote: Is this special shim reoval tool still available?

Yes,I think Z1 parts or Z1 enterprises has it.

www.z1enterprises.com/product/ZSM001-113

Nessism wrote: You have a bunch of valves at the minimum clearance spec. Personally, I'd move them up to the middle-upper end of the spec range to buy you some time before you have to go back inside the engine.

If you are anxious to get the job done wire ties can be used instead of the shim tool. Read about it here if interested... members.dslextreme.com/users/bikecliff/i...lve_tool_zip_tie.pdf

I have two different tools and the ziptie is by far my favorite method.

If those are the measurements with a semi hot engine, I would not change anything except the
#2 exhaust shim to the very next smaller shim number.
In other words, if it is a #280, I'd use a #275.
Then ride the bike for a couple thousand miles and check them again.

Not super anxious to get these changed out, so I ordered the tool and will see how that goes.
The bike was parked for a week in my garage before I took the valve cover off, so no, it wasn't a warm engine...

Bama704 wrote: Not super anxious to get these changed out, so I ordered the tool and will see how that goes.
The bike was parked for a week in my garage before I took the valve cover off, so no, it wasn't a warm engine...

OK The service manual states to check cold but I check mine with the engine pretty warm.
That could imply that when hot , the engineers expected that gap to close up a bit.
However, I still try to get right in the middle of that .002"-.004" when warm and for sure, favor the fatter setting for the exhaust side.
I'd rather have them a very little bit loose and (maybe a bit more noise) but it is not really that noticeable.
If that exhaust valve is set too tight and the cam takes pressure off the valve's seat (the valve doesn't clamp down tight into the valve seat), it will over heat and damage the seat or the valve.
Then you have some big $$ to spend on something that was stupid simple to avoid.
But I have had a few running at .002" for many months and when checking again warm near the end of the season,, they were still around + .002".
I don't know what the general consensus is here about checking clearances hot or cold... but I've been doing it this way since 1974-1975 and have never burned a valve.... bent them being stupid though! LOL

I ended up getting the stupid motion pro tool and it was awful and I could only get one shim out. So I used the zip tie method which worked great. Here are my measurements

Clearance :
Intake / Exhaust
1 - .002 (.05mm) / .004 (.1mm)
2 - .003 (.762mm) / <.0015 (.0381mm)
3 - .002 (.05mm) / .003 (.0762mm)
4 - .0025 (.0635mm) / .003 .0762mm)

Shim Size :

Intake / Exhaust
1 - 250 / 280
2 - 250 / 285
3 - 280 / 275
4 - 275 / 270

Which ones would you change out? Should I try and get the clearances set to .1mm on the intake and .15mm on the exhaust side?

Bama704 wrote: I ended up getting the stupid motion pro tool and it was awful and I could only get one shim out. So I used the zip tie method which worked great. Here are my measurements

Clearance :
Intake / Exhaust
1 - .002 (.05mm) / .004 (.1mm)
2 - .003 (.762mm) / <.0015 (.0381mm)
3 - .002 (.05mm) / .003 (.0762mm)
4 - .0025 (.0635mm) / .003 .0762mm)

Shim Size :

Intake / Exhaust
1 - 250 / 280
2 - 250 / 258
3 - 280 / 275
4 - 275 / 270

Which ones would you change out? Should I try and get the clearances set to .1mm on the intake and .15mm on the exhaust side?

I don't think there is any such thing as a 258.... probably a 250.
So if yes, a 250, I'd buy a 245 for #2 exhaust.

I fixed my edit, the 258 is supposed to read 285

Like Nessium said I'd think about opening them all up a shim except for maybe the #2 intake and #1 exhaust .......you could swap a few around and probably only have to buy a few. Could buy you quite a while before doing it again. Maybe a hair towards the loose end but a fair amount of guys have told me they run the "small blocks anyway" up towards the high end of (.003 to .007). I would worry about the .002 readings once they wear a thou your cutting it pretty damn close but see what a few others think.