- Thread starter
- #21
It felt strange to me to machine shims when they are still available in different sizes. But I will happily admit that you guys know more about this than I do.
Thanks for your help.
Valve adjustment shims (1 Viewer)
- Thread starter rc51kid
- Start date
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Thanks for your help.
NLXTACY
Wits' End
only because its a time thing sometimes. Banging out a specific shim is no biggie. Its literally just a round puck.
According to my local stealership, only every other size is only available (maybe less). Luckily, my most critical one; which was the thinnest, was available. All the others, I went up or down to the closest available. Worked out better than I expected. Only took a few days to get them. If you desperately need one that you can't get, PM me for the size, I may have it.
It’s the correct set for the 1FZ.
- Thread starter
- #25
Ordered it. Thanks!
What type of steel?
Are they hardened?
They are highly polished. Is that achievable by the average shop?
COYS
SILVER Star
- Thread starter
- #28
How does the sizing work on those? Are they all the same thickness or a veriety of thicknesses?
NLXTACY
Wits' End
I was gonna say, what’s highly polished? The packaging ?
How would you describe the finished surface then?
The three not in a bag are so shiny its hard to photograph them. Look closely, you can see my finger prints on the shiny surface.
They are extremely flat. Seem to be coated or anodised?
I have new/unused OEM shims that look the same as the pics above, and used ones that absolutely have a mirror smooth surface on them, with remnants of whatever finish Toyota have on them.
The new ones are finished to a very fine/smooth surface finish.
I wondered if they are coated, anodised, nitrided?? To prevent rusting, but I have used one that had been in my spares collection for 10 years + without a spec of rust on them
COYS
SILVER Star
Yo mud! Not sure what you have in the stash but the qty 10 I posted are fresh from Toyota Japan 1/20/22 built to order JIT.
That was the same finish that was on the new ones I got last fall. FWIW
Question for the hive mind: if starting with a new Toyota head, new Toyota valves, and new Toyota springs, would there be much variation in the thickness of new shims needed to set up the head??
Or to put it the other way around, what size shims would someone order ahead of time if new shims were going to be used in the scenario above?
Or to put it the other way around, what size shims would someone order ahead of time if new shims were going to be used in the scenario above?
You would need to assemble the head. Measure and order shims to suit.
If you were starting completely fresh, have a selection of shims of different sizes so you have a baseline to measure clearances with, and calculate from there.
Then order what you need.
The ones in the bag are unused.
The three laid out are used, and mirror shiny.
There's little difference in the smoothness of new ones and shiny used. It's like a coating has been rubbed off the used ones
My question is if machining and grinding your own, how practical/realistic is it to produce the same super smooth finish, and in the same material.
A lower quality grind/polish is gonna have a negative impact on cam lobe wear
When my new short block and head were assembled in Sept 2020, we were able to reuse the majority of the old shims on the new head. I think only 2-3 new ones were needed in my case.
With the shim thickness only being 0.05mm or ~0.0019" and the specs being:
Intake: 0.15 - 0.25 mm (0.006 - 0.010 inch)
Exhaust: 0.25 - 0.35 mm (0.010 - 0.014 inch)
There isn't a huge amount of variance. I think a lot of it would come down to valves being worn, valve seats being worn and cut deeper, etc. On a OEM fresh head with all fresh parts you would likely fall between 2-3 shim sizes.
Intake: 0.15 - 0.25 mm (0.006 - 0.010 inch)
Exhaust: 0.25 - 0.35 mm (0.010 - 0.014 inch)
There isn't a huge amount of variance. I think a lot of it would come down to valves being worn, valve seats being worn and cut deeper, etc. On a OEM fresh head with all fresh parts you would likely fall between 2-3 shim sizes.
@rc51kid just curious if you're adjusting them just as PM or you noticed some tapping in the valve-train or rough running etc.
I'm just asking since I heard it was pretty rare for them to go out of clearance on this motor unlike the 3fe or 3rz, though maybe they run smoother or get better mpgs with regular adjustment?
I'm just asking since I heard it was pretty rare for them to go out of clearance on this motor unlike the 3fe or 3rz, though maybe they run smoother or get better mpgs with regular adjustment?
