The Craftmans Shop > PowerSports
1954 Ford 850 Tractor w/blown Head Gasket (at the very least)
vtsteam:
vtsteam:
Last operation was to harden and this time, temper the cap. Hardening was repeated the same way with the MAPP torch and cup of water.
But for tempering I wanted to go slowly and create an even temper, and it's kind f hard to control with a torch on such a small part. So I decided to try the electric toaster oven in our kitchen (with permission!). I figurd that would be a lot slower heating process, and more even. I set the temperature to 375 F and let it warm for 10 minutes.
When I thought things were up to temp I checked the broiler pan with a non-contact thermometer I got from Harbor Freight. I was shooting for a 399F light straw temper, but unfortunately, as I suspected, the oven was far from accurate (415 F) or consistent. It tended to overshoot quite a bit. So then I just dropped in the part, turned the stove up or down, by hand while checking frequently with the thermometer. That worked well and after ten minutes or so I pulled the cap out and saw a very light straw on the polished end. Done!
Sid_Vicious:
Looks real good, you solved it nicely.
vtsteam:
Thanks Matt, Sid! :beer:
Manxmodder:
Well done Steve, I love the way you have approached and resolved the warped head and the missing valve cap.
Where there's a will there is a way :dremel: :clap:
On the subject of using super glue to mount awkward workpieces such as the method you refer to in Tubal Cain's book,I have previously used this technique to reduce the thickness of crankshaft thrust bearing washers.
The washers being super glued on the bearing face to a piece of faced bar held in the lathe chuck and then skimmed according to dimensional requirements.
On the point of your concerns about the cam and follower condition,you could easily mount a mag based DTI on top of the engine block and check to see how the lift of that cam lobe compares with neighbouring ones.....OZ.
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