Gregory Bender

Valve spring compressor tool

Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models

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I first purchased, bent upon first use, and returned this Craftsman valve spring compressor (part number 47627). Maybe it will work for you, but it didn't for me.

Photo courtesy of Sears.

Next, I came across an original valve tool on ebay. It is quite well made but I found it difficult to use.

Photo courtesy of Gregory Bender.

I finally decided to make my own, homemade valve spring compressor. I'm certainly not the first person to make my own, but I thought I'd share my experience.

There you have it. About USD $10.00 for a specialized tool that works absolutely beautifully!

Homemade valve spring compressor tool for Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, 850 California Police models.
Homemade valve spring compressor tool for Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, 850 California Police models.

Photo courtesy of Gregory Bender.

Thanks to Darryn Webster for sending me this information about how he made his homemade valve compressor tool. In Darryn's own words:

Here's an economical and effective way I came up with to get those Guzzi valve springs compressed! Worked like a champ! Around USD $10.00 for every thing (except your time), and you might have enough left over for a couple of stamps. Here are the parts needed: One 8 inch inch C clamp from Harbor Freight or the like. One 1 14 inch schedule 40 PVC coupler. One 1 14 inch × 1 inch schedule 40 PVC reduction bushing. One 34 inch schedule 40 PVC coupler. I used a Bosch vibratory saw to notch the large coupler and cut the two windows in the small coupler. I'm sure other methods could be used to cut the PVC, but would probably prove difficult.

Happy Valve Spring Compressing!

All the pieces ready to go.
All the pieces ready to go.

Photo courtesy of Darryn Webster.

3⁄4 inch schedule 40 PVC coupler with window cut outs for accessing valve spring retainers. I used a Bosch vibratory saw to cut the window. Do not notch! Coupler will spread and fail.
34 inch schedule 40 PVC coupler with window cut outs for accessing valve spring retainers. I used a Bosch vibratory saw to cut the window. Do not notch! Coupler will spread and fail.

Photo courtesy of Darryn Webster.

 One half of 1 1⁄4 inch schedule 40 PVC coupler notched to accept 8 inch C clamp.
One half of 1 14 inch schedule 40 PVC coupler notched to accept 8 inch C clamp.

Photo courtesy of Darryn Webster.

1 1⁄4 inch × 1 inch reduction bushing slid into opposite end of notched 1 1⁄4 inch coupler. No glue necessary.
1 14 inch × 1 inch reduction bushing slid into opposite end of notched 1 14 inch coupler. No glue necessary.

Photo courtesy of Darryn Webster.

Ready to go.
Ready to go.

Photo courtesy of Darryn Webster.

Photo courtesy of Darryn Webster.

Hold it steady and keep everything centered while compressing valve spring.
Hold it steady and keep everything centered while compressing valve spring.

Photo courtesy of Darryn Webster.

Bada Bing!!
Bada Bing!!

Photo courtesy of Darryn Webster.

Slight grinding required to fit clamp in 1 1⁄4 inch schedule 40 PVC coupler.
Slight grinding required to fit clamp in 1 14 inch schedule 40 PVC coupler.

Photo courtesy of Darryn Webster.