So my valve tick is quite loud now I am noticing it more ever since I got my cat back installed, no more open down pipe lol. From what I have gathered I check clearances with a feeler gauge with the cam lobes pointing straight up and if they are out of spec I pop them out with a screwdriver and magnet and get replacements at the dealer then put them in and crank the engine for 10 seconds to seat the shims apparently oil pressure won't build up enough to spray oil everywhere and re-check clearances. I want to be sure this is correct and I do not have the time to remove my cams and don't have the tools to pop out the shims and check the thickness and apparently I do not have to do that I can do what I said above and use a feeler gauge while everything is installed. I saw a video by Numba1stunna on how to check clearances and he's helped me a great deal when I did my head gasket replacement he seems to know his stuff quite well my car still running over a year later is a testament to that lol.
Replacing valve shims
- Thread starter Doat
- Start date
Why can't you take the cams out? If you've gone far enough to take the valve covers off, the cams are just a few more bolts away. Loosen the timing belt and remove the cam caps according to the TSRM.
I've heard that you need to add .001+ to the shim thickness as the new shim will seat in the bucket after a few miles. Do you remember what they say about short cuts?
I've heard that you need to add .001+ to the shim thickness as the new shim will seat in the bucket after a few miles. Do you remember what they say about short cuts?
True, I was hoping it wouldn't matter in this case since I am just replacing the shims but I'll get it re-timed afterwards and buy a torque wrench for the caps but am I right with my idea of checking clearances and if they are out of spec I just get new ones from the dealer and drop them in? Also what about cranking the engine while everything is apart then re-check clearances is that okay to do?
I can't apply first hand experience as I haven't adjusted my shims yet. I'm going shimless buckets so my process might be a little different.
http://www.supramania.com/forums/showthread.php?123829-7mgte-valve-shim-specs/page2
http://www.supramania.com/forums/showthread.php?123829-7mgte-valve-shim-specs/page2
I remember reading that thread too how can I add a little more thickness to the new shims or do I tell them at the dealer to get shims that are XX mm thicker? Also should I just go ahead and replace all the shims even if they are in spec?
Measure the shim thickness that you need then add .001-.002 to that thickness.
So if you need a shim that is .010 thick just order a shim that is .012 thick.
I would only replace the shims that are out of spec, you can replace them all as they aren't that expensive but it's more time consuming.
So if you need a shim that is .010 thick just order a shim that is .012 thick.
I would only replace the shims that are out of spec, you can replace them all as they aren't that expensive but it's more time consuming.
The shims are all different thicknesses so even if you order new ones you will have to know how thick they need to be and every one will probably be a different thickness
If I am following you is sounds as if you are under the impression that all new shims are the same correct thickness and you need to replace them if they are worn.... However this is not the case
If I am following you is sounds as if you are under the impression that all new shims are the same correct thickness and you need to replace them if they are worn.... However this is not the case
Well I rather get them all done so everything operates relatively the same if that makes any sense. Like I rather replace them all so every valve opens and closes the same instead of the more worn shims don't open the valves as much as the new ones. Know where I can order the shims online or is it best to get them from the dealer?
Yes but you will need to determine how thick of shims you need (thickness of current shim) +(whatever you need to bring it in spec)=thickness of shim you will need to buy for that valve
If you go down to Toyota and ask for shims they will ask you what thicknesses you need if that makes sense
I just went to a yamaha dealer and they exchanged the ones I need for the ones I had free of charge. There is an excel worksheet floating around here that came in handy when I measured my shims.
suprasick;1983801 said:
This works if you have one in hand, I believe someone here tried that and got 23mm shims instead of 25mm. Don't quote me on the numbers, they're used as an example and probably aren't the correct sizes.
Is the feeler gauge method incorrect or not as accurate as using a micrometer and removing the shim? Seems like it's the same concept.
The couple of 7Ms I've had a part all had worn cam bearings that get looser the farther you go from the front oil feed. Trying to adjust your valve clearances when you have 6-10 mil slop in the bearings is a pointless exercise in frustration. First step should always be to plastigauge your cam bearings.