</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> How well does that stuff stand up to the heat?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Very well , except at exh ports...turns brown after use....you want it thin there...the thinner ,the better it holds up..(at exh ports)
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> So would it be better to spray (aerosal) or use a brush?
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">depends on the application...if you paint motor in place , use brush , if you have engine out , spray...

I used spray (not Hirsch, think it was duplicolor?) on my "new" heads , sprayed thin , but after 300 miles its already brown at exhaust ports...Hirsch took 1500 miles w a double coat (yellow , blue), so I will go over that area w brush and Hirsch paint soon to touch up...