Installing Valve Spring Collets

Hi Guys,

I got one of those cheap winding valve spring compressor tools. Using it to get the collets out was easy, however using it to compress the spring and put the collets back in not so much. I found that as the tool was wound to release the spring, it was not only a slow process but moved the spring around and collets out of position.

I also found the collets really fiddly to put in. One would always drop into position perfectly straight away but the second one was difficult to get lined up and in. I was using a little magnetic screwdriver (wasn’t working very well felt like. I needed a skinny magnetic pick up tool) and a pick to put them in.

In Andre’s demonstration I think he uses the SPC Tools valve spring compressor tool instead of a winding one, this is probably a better tool to be using. Anyway my question is does anyone have any tips on best ways to put these collets in?

thanks for your help

Hello James

This is one of the worst tools you can buy. This tool is usually not stable enough and it bends.

I have tested a few tools, the simplest and best in my opinion is the Facom U.43LA, once the cylinder head is removed I only work with this.

I always place the collets in the cap without grease or anything, place the cap on the spring, then place my finger on the wedges and compress the spring with the tool.

You have to make sure that you have the cap in the center of the valve, otherwise you will have exactly the problem that can be seen in your pictures, only one collet will hold because the other had no room in the plate.

it is difficult to explain in words, it also takes a little practice

Simon

On bigger assemblies I've just done them 'dry', but with smaller collets I now use a dab of grease to hold them in place on the stem* as I release the compressor.

*Compress the spring cap/retainer and slip the collets/locks into place.