Stronger valve springs with re grind cams

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Old 06-06-2011, 07:53 AM
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Stronger valve springs with re grind cams

Will stronger valve springs wipe out the regrinded cams quickly.
Also I've read around and heard I could use just stronger exhaust side springs and stock intake springs and would be fine.
Or vice versus.
Anyone know anything about this ?
Old 06-06-2011, 05:28 PM
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Well, if your going to bend a valve, it's going to be the exhaust first. I guess it makes sense to strengthen the exhaust valves first; if your going get to the valves, might as well strengthen both sets.
Old 06-06-2011, 05:32 PM
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Regrinds arent treated properly after they are cut, even OEM springs wipe them out quickly.
Old 06-06-2011, 06:13 PM
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How has the kms one's been treating your cams ?
have you had the need for any valve train adjustments or loss of power due to your cams getting worn ?

I talked to bisi and he said his are at 71 vs 75 for kms so the bisimoto pro springs would be more forgiving but they give me the performance with the titanium retainers that I need.
Old 06-08-2011, 03:17 PM
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Im running stock cams, so theres no issues with it.
Old 06-08-2011, 04:20 PM
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no need for cams unless youre going to raise your rev limiter
Old 06-08-2011, 10:53 PM
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I went to Comp Cams in person and they said they would not even touch OEM cams. The only way they would regrind a cam is if it was a aftermarket cam that you wanted changed a bit.

IIRC he said they would not last buy maybe a month before they were shit.
Old 06-08-2011, 11:28 PM
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I was told they would not last if you did not correct the contact on the cam itself.
With the smaller base circle Their may be a need for a shim between the rockers and the cams and they will last pretty good.
And alot of people do not do this and have problems.I forget the term I heard being used as to how the cams get worn in the middle of the ramps because of it.
I just need to do more research and talk to some guys that know their stuff.

As I said before I'm not in a rush to build a grenade.

It's going to be built,and not by a back yard guy that can do basic rebuilds.

Last edited by richardparker; 06-08-2011 at 11:42 PM.
Old 06-09-2011, 12:12 AM
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I just looked at the site that did the actual work to the cams and depends on the setup they're diffenrt valve tipping options too.Welding and shims.
I just need to talk to people and find out what method I need to use
geometry is everything and where a real engine builder is needed.

Last edited by richardparker; 06-09-2011 at 12:16 AM.
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