Classic Mustangs List Archive
valve seats, lead substitute
 ., Online, USA
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Mail From: David Kunz (email redacted)
Just a word of warning on using lead substitutes. When I first bought my
fastback (original 390) some years ago, I asked my mechanic about the
need for lead substitutes.
What he told me was essentially what's been said here on the subject:
For engines that are not run too hard (no racing, towing), it's really
not necessary. He said that if it made me feel better, an occasional
dose of lead substitute would be okay.
HOWEVER, he also cautioned against using too much of the stuff. He had
experienced instances of over-zealous owners pouring in a bottle with
every tankful, causing the valve stems in otherwise fine engines to
seize right in the guides.
"A little dab'll do ya'," right?
Dave Kunz
'65 coupe
'68 fastback (Bullitt replica)
'89 Merkur XR4Ti (hey, it's a Ford)
Mail From: David Kunz (email redacted)
Just a word of warning on using lead substitutes. When I first bought my
fastback (original 390) some years ago, I asked my mechanic about the
need for lead substitutes.
What he told me was essentially what's been said here on the subject:
For engines that are not run too hard (no racing, towing), it's really
not necessary. He said that if it made me feel better, an occasional
dose of lead substitute would be okay.
HOWEVER, he also cautioned against using too much of the stuff. He had
experienced instances of over-zealous owners pouring in a bottle with
every tankful, causing the valve stems in otherwise fine engines to
seize right in the guides.
"A little dab'll do ya'," right?
Dave Kunz
'65 coupe
'68 fastback (Bullitt replica)
'89 Merkur XR4Ti (hey, it's a Ford)
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