Need help identifying these valve springs and retainers
 

I have a 2.8 short stroke motor that uses 3.2 heads and valves and turns 8,000 rpm. It was built by Deman Motorsports in New York, but I don't have a build sheet for it. It has aftermarket valve springs with Ti retainers. I recently had the inner spring on the #1 intake valve break. I am going to replace all springs, but I would like to reuse the Ti retainers. Thus I was hoping some of the experts here could help me identify what I already have.

Here is one of my unbroken springs next to a stock spring.

http://forums.pelicanparts.com/uploa...1388370178.jpg

The uncompressed spring measures 50mm.

http://forums.pelicanparts.com/uploa...1388370299.jpg

With the retainer, the stack measures 52mm uncompressed.

http://forums.pelicanparts.com/uploa...1388370362.jpg

The outer spring diameter is 14mm.

http://forums.pelicanparts.com/uploa...1388370496.jpg

The inner spring diameter is 10.5mm.

http://forums.pelicanparts.com/uploa...1388370565.jpg

Here is the Ti retainer.

http://forums.pelicanparts.com/uploa...1388370639.jpg

http://forums.pelicanparts.com/uploa...1388370698.jpg

I spoke with Rick Deman today and he thinks they may be either Web Cam springs or Jerry Woods. Anyone familiar with the specs of either of their performance spring sets?

My bet is domestic, comp cams...crower...try measuring and searching in inches.

Since you're replacing all the springs, is it imperative you replace with the same exact brand? There are other spring suppliers for your engine (e.g. Aasco, etc.). Measure existing spring pressure at installed and max. valve lift height and find a close match. Installed height with retainers is adjusted during fit-up/installation.

You may wish to simply look up an engine application chart from Webcam, ERP, Patrick MS, TRE, etc., but here's a spring spec chart used by a source (not 911):

http://forums.pelicanparts.com/uploa...1388785120.jpg

Sherwood