bigger exhaust valves

[willsalter1000]

right, i was wrong, not diesels, from 1.5 golf/ scirocco engines

a tiny bit shorter than polo valves and despite what i said earlier the ones shown here have 3 grove collets

these valves have been used in a polo head before, there was on forsale on club polo awhile back

[Justin14100]

what does the fact its shorter mean? less lift? would be interested in some if we found a cheap supplier!

[Raw]

in this topic does bi-metallic essentially mean sodium filled?