Hi Andy,
Be aware, some of them (most of them) do not cool very well and are not worth more than you would get in return for the glassfiber. If you take a look at some of the pictures on Don Pauters website you will see
the work he have done in order to direct the airflow to all the cylinders.
Best rgs
BB
Hi,
Oh I'm totally aware that nearly all are just a hollow bag of poo and they over and undercool, but was thinking I'd get 4 thermocouples and a 4 way switch to see which are hot/cold and add fins to get as close to even cooling asi can, which I know can be done. I'll check his website, cheers

This is the one part of my engine build where looks its taking president, I just love the look!