I have completed a skinning of my motorcycle exhaust cans (using the EC HighTemp Epoxy) and am preparing to post-cure using the procedure on the spec sheet. Another forum suggested I may encounter yellowing of the resin as you heat cure above 150 C. 

Hi,

We've not had any experience of yellowing when we've post cured our High Temperature Epoxy at up to 180C. The test parts we've cured were carbon fibre (so they were in essence a very dark colour) which would disguise any discoloration somewhat but to my eyes it looked exactly the same as before we post-cured it.

All the best, Matt

Matt Statham
Easy Composites / Carbon Mods - Technical Sales

I had the luck to feel in my hands parts used in F1.

A slight yellow tint is normal for some resins, but not as a general rule. Check the manufacturer specs.