Cylinder heads, valves, springs, rockers etc.

Dec 2021

Heads were thoroughly cleaned, deburred gasket faces and readied.

In the pic, guides were sized checked. Head heated to 100°C, guides chilled in freezer. Teflon paste by Loctite was used to help lube the fit and to seal guide-to-head. Notice thermocouple sits in oil channel for measuring temperature. 

Pen points to raw edge which was carefully rounded with a bit of wet&dry paper. Tickling this simply aids installation.

Rocker spindle seal 19mm ID x 2.65mm. Viton, brown FKM. Bought from Aliexpress.

Regular O-rings suffer from excess heat, then leak.