Your Cylinder Heads or Ours?

If you have new castings, or a set of good used heads that you want improved, of course we will work on them. Our labor operations are the same for new or used heads. However, if we do not know the history of the heads, we will need to inspect and pressure test the heads before they are worked on. 

How To Ship Your Cylinder Heads To Us

Yes, we will rework new and used heads that you supply.

Here are a few tips to make sure your heads arrive to us intact.

• Don't send 2 cast iron heads in one box; the box just gets too heavy.  This is a sure way for the heads to get damaged. 
• Remove the rocker arm studs, guide plates and any valve cover studs.  These items will get bent or broken in transit.
• Also, if you are using the small packing “peanuts”, first enclose the heads in a plastic bag;  this prevents the “peanuts” from getting lodged in the water passages.
• Call us to get an invoice number before shipping the heads. 
• Consider our "Package Pickup Service".

Package Pickup Service

To make it easier for you to send in your parts to us for modifications, we can arrange a United Parcel Service pickup for your packages. Simply have your parts correctly boxed and give us a call. We will arrange for UPS to "pickup" the boxes from your place of business or home and deliver them to us.  This UPS service often times cost less than taking the packages to a shipping store. We will include the shipping charges on your final bill.

How we gather our flow figures

The flow numbers gathered are from dozens of tests on each particular head. After a wide cross section of tests is attained, the flow figures are averaged to achieve a baseline. True, some ports may on a particular casting, flow 2 to 4 percent more than our average base line. However, the next port (or the next head) may be down more than 4 percent. This is especially true with stock cast iron cylinder head castings. Also, the head’s flow numbers may change over years, due to changes in production. All of our flow testing is performed at 28” of water with a SuperFlow 600 flow bench, Flow Pro software from Audi Technology and the flow bench equipment displayed in this catalog.