Engine covers

[M. REY]

I removed the plywood and foam core from my engine covers (1975 fbc).
I am going to use klegecell as a new foam core.
In terms of engine heat should I use polyester resin or can I go with epoxy?.
Thanks.

[CaptPatrick]

Rey,

Thickened epoxy would be fine to bed the KlegeCell to the inside of the boxes and assure a better adhesion, but thickened polyester would do the job almost as well. The exterior skin would be better done using polyester resin.

I would, (and have in the past), probably go with polyester for the whole job. Easier, faster, & less expensive.

Br,

Patrick

[M. REY]

Oh perfect, thank you very much indeed.

[CaptPatrick]

Rey,

One more item... I've said it so many times that I feel like a stuck record, but to get good adhesion, especially when applying new polyster to old, PREP is PARAMONT!

The bonding surfaces of the engine boxes need to be ground down to fresh glass, cleaned, and primed with straight catalysed polyester resin. You also need to prime the surface of the foam. Allow the prime to tack up before bedding the foam. Prime the exposed side of the foam before laying up the glass.

Br,

Patrick