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Re: unleaded fuel and hardened valve seats
[Re: BTTG]
#904279
01/14/11 11:16 AM
01/14/11 11:16 AM
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Joined: Jan 2006
Posts: 587 IL . usa
cjs69mope
mopar
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mopar
Joined: Jan 2006
Posts: 587
IL . usa
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Well all I can tell you is that I have had a engine that I rebuilt in 1990 with stock leaded head seats and it is still running strong today! I drag raced it some and mostly street drive it . But I do use a lead substitute every other fill up on gas .I also use the Lucas fuel treatment and upper cylinder lubricant. had the heads off and rechecked one time( in the time i have had it) They were givin a good bill of health by my machine shop . I say if your heads are fresh then leave them alone but if you need a valve job then have hardened seats put in . Just depends on the use of the car if not drag racing every week then just stay stock . and use the additives. To be honest if i ever need to have hardened seats put in because i burn a valve. Because of the cost I would buy a set of Edelbrock rpm heads.By the time you have all that machine work done the price with seats and every thing will probably be close or more than a better eddy head set up! Been there on other projects and used the out of the box eddys and never looked back put iron heads on the shelf for maybe some other use (doubt it !) lol. You just can't believe the performance increase with the edelbrocks engine is lighter , runs cooler , already for unleaded gas , compression bump with the small chambers = A+ in my book .
1969 Dodge Charger
1969 Dodge Superbee
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Re: unleaded fuel and hardened valve seats
[Re: cjs69mope]
#904280
01/14/11 11:19 AM
01/14/11 11:19 AM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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Over the years we have found that Mopar heads are much more tolerant of UL fuel than either of the brand x heads seem to be. That being the case I would not worry too much about it for limited driving .
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
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