On my roadster I used to 20 inch glass packs. One between the X-member on
one at the end. It works good and was cheap, but it is LOUD. To solve the
noise problem I have designed an adjustable exhaust tip. I plan to build it
in the coming months - I'll let you all know how it works.
A note on oils
I found some notes my retired boss left behind. There are two types a crude
oils, naphthenic and paraffinic. As the name suggests, paraffinic oils
contain paraffin wax which plates out on the inside of motors when subjected
to heat and mix action. This plating out is called varnish. This can be
seen on the inside of that aluminum valve cover. Naphthenic oil do not have
this problem - if this really is a problem. The only oils from naphthenic
crude is Texico Havaline. I guess this is why he only used havaline 30w in
his cars. I will look for more published data on this to confirm his
writings.
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