Dual Valve Springs for S90 head

[David Vellutini]

Were can I source dual valve springs, retainers, keepers etc for my S90 heads?

My heads are currently out for repair an I noticed the aluminum retainers are worn out so I thought I's replace the springs, retainers keepers etc

[Martin Benade]

Aluminum retainers and dual springs are not original. Its probably best to go back to stock parts unless you have some wild cam in it.

[David Vellutini]

Understood. I have read in numerous places the if you rev the engine high (5,000 + rpm), dual valve springs help with valve float

[Martin Benade]

Stock springs are enough for what the stock cam is capable of, and not too hard on the cam and lifters. What cam will you use? If it is not stock the cam provider can tell you what works best.

[David Vellutini]

I will call the cam supplier. Thanks

[Dick Weiss]

All are listed in Stoddard's, NLA, Sierrra Madre & other websites.

[David Vellutini]

Stoddard et. al. only have single valve springs, not dual (unless I'm missing something)

[Vic Skirmants]

S-90 only came with single, and not with aluminum retainers.

[Steve Proctor]

I have run Elgin and NeuTec 280* - 290* cams well over 6500 RPM with no valve float. How radical are you going???

[David Baugh]

With the factory dual springs and steel retainers, my valves would beat the seats out of my early heads. I switched to single springs, and the problem ceased.

Dave

[Dick Weiss]

All,
I made a mistake of not listing Zim's having parts availability to solve the valve spring question and other situations.
I must've been interrupted w/a phone call while 'fingering' the computer.

(Sorry Al)