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Chryco's Tech Shop
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Light valve springs for break-in?
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Topic: Light valve springs for break-in? (Read 958 times)
torredcuda
Sr. Resident
Posts: 6218
Epping NH joined 11/23/03
Light valve springs for break-in?
«
on:
May 20, 2007 - 05:07:29 AM »
Getting close to a completed engine and am considering installing light valve springs just for break-in on the new solid cam,do I need to or just use the ones for the cam?I`l be using the Rotella T and Comp cams oil additive per there tech sheet but figure the lighter springs will help too?
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Jeff
72 Barracuda 340/4spd Torred
70 roadrunner 383/auto In-Violet
70 Duster 360/auto drag car (Petty Blue soon)
04 Ram 2500 5.7 Hemi
GoodysGotaCuda
Sr. Resident
Posts: 5392
Re: Light valve springs for break-in?
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Reply #1 on:
May 20, 2007 - 06:42:10 AM »
I personally would if i had softer springs laying around. I much rather do all i could to avoid a ate cam issue, so the extra time to swap them would be worth it to me.
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Chryco Psycho
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C-C.com Guru
Posts: 36620
70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Light valve springs for break-in?
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Reply #2 on:
May 20, 2007 - 09:01:10 AM »
I agree , while it is a pain to swap springs on an engine in car I feel it iiis worth doing , changing the cam out is more of a pain & more costly
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Challenger - You`ll wish You Hadn`t
torredcuda
Sr. Resident
Posts: 6218
Epping NH joined 11/23/03
Re: Light valve springs for break-in?
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Reply #3 on:
May 20, 2007 - 10:03:35 AM »
Since the rebiuld is due to a wiped cam I want to avoid going thru it again!Any springs you would recommend to use-stock 318 type or???
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Jeff
72 Barracuda 340/4spd Torred
70 roadrunner 383/auto In-Violet
70 Duster 360/auto drag car (Petty Blue soon)
04 Ram 2500 5.7 Hemi
Chryco Psycho
Administrator
C-C.com Guru
Posts: 36620
70 Challenger R/T SE 70 tube Chassis Cuda now sold
Re: Light valve springs for break-in?
«
Reply #4 on:
May 20, 2007 - 03:58:43 PM »
if there are a dual spring I would just use the outer spring , if there are a single spring it should live without a lighter spring , Make sure the cam is well coated in break in lube & use either Mopar Oil conditioner or Gm EOS with the oil when you break it in
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Challenger - You`ll wish You Hadn`t
drag-n-cuda
Jr. Member
Posts: 39
Re: Light valve springs for break-in?
«
Reply #5 on:
May 20, 2007 - 07:14:47 PM »
torredcuda,
What are your cam specs, spring pressures? Just asking, because it might not be necessary.
my $.02,
drag-n
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moper
Resident
Posts: 2368
Re: Light valve springs for break-in?
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Reply #6 on:
May 20, 2007 - 07:24:53 PM »
I agree with CP and drag-n..basically, single springs should be fine for break in. Duals loose the inners. I use 340lbs over the nose as my limit. Above that, you should arrange to use a lighter spring, or remove the inner.
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ntstlgl1970
Resident
Posts: 2204
T a c o c a t
Re: Light valve springs for break-in?
«
Reply #7 on:
May 23, 2007 - 11:13:33 AM »
Make sure the lifters are rotating too
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70 Cuda, 7.0L Gen-III Hemi, Viper T56 w/9310 gearset, 3.91's, Megasquirt MS3x v3.57, Innovate wideband, Firm Feel upper arms, torsion bars, springs and strut rods, QA1 DA shocks. I did everything on this car except the fancy paint stuff and I drive it...and I can't seem to stop messing with it....
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Light valve springs for break-in?