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1966 mustang coupe, 289 V8
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29 Posts
Discussion Starter · #1 ·
So I'm taking apart my 289 cylinder heads to get a good clean on them sense I have them off. I'm taking the valve spring off and there is a smaller spring in a larger one. I was wondering if this was factory style or if someone did it befor I had the car? Also if it would be beneficial to buy new springs and go to a single one? The current spring are perfect other than being a impossible to get off.

If anyone has suggestions on taking them off a little easier I would appreciate it! My current tool is just not cutting it and don't want to have to buy another one.
 

· Registered
1966 mustang coupe, 289 V8
Joined
·
29 Posts
Discussion Starter · #4 ·
Most likely a replacement spring set for a long-ago cylinder head refresh. Only hipo heads had inner dampers in the factory sense.
The dual springs are HD in that they beneficially change the spring harmonics AND provide increased valve spring pressure.

I used to use the standard KD compressing lever and an air line connection to put air inside the cylinder. Don't know what tool you have.

View attachment 791383

If the cylinder heads are off KD tool makes a different one to do the job.....
So you don't think it would be worth it to change the springs? And my cool some cheap clamp like things from China. I can flex the metal by hand. I'm just going to buy a good tool so I don't have to worry about it.
 
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