Do you have to replace the lifters w/new cam?
Thread Starter
Staging Lane
Joined: Nov 2001
Posts: 60
Likes: 0
From: Saginaw, TX
Do you have to replace the lifters w/new cam? The GM Service Manual says that if you're replacing the camshaft, the valve lifters must also be replaced. I had a new motor built with a new cam, but do I have to replace the lifters or can I reuse the old ones? They only have about 31k miles on them and look good.
Thanks
Matt
Thanks
Matt
Teching In
Joined: Sep 2004
Posts: 25
Likes: 0
From: Colorado
Originally Posted by y-man
The GM Service Manual says that if you're replacing the camshaft, the valve lifters must also be replaced. I had a new motor built with a new cam, but do I have to replace the lifters or can I reuse the old ones? They only have about 31k miles on them and look good.
Thanks
Matt
Thanks
Matt
Staging Lane
Joined: Aug 2004
Posts: 62
Likes: 0
It has always been necessary to change lifters with flat tappet cams but with Roller lifters I don't see the need. Maybe someone from a manufacturer could chime in here but if the cam/lifter contact is a roling wheel there is no wear pattern to contend with between cams.
I am still running stock lifters as are many other cam-swappers. I did change my oil after 100 miles on the new cam, though.
The only reason I'd upgrade my lifters is if one broke or I had a problem with valve float. If I did a head swap, I'd replace them too, but with less importance on the 'upgrade' part.
Hydraulic Roller set-ups are easy on cam/lifters.
The only reason I'd upgrade my lifters is if one broke or I had a problem with valve float. If I did a head swap, I'd replace them too, but with less importance on the 'upgrade' part.
Hydraulic Roller set-ups are easy on cam/lifters.
Last edited by CamTom12; Nov 22, 2004 at 10:56 PM.
Teching In
Joined: Sep 2004
Posts: 25
Likes: 0
From: Colorado
Originally Posted by y-man
The GM Service Manual says that if you're replacing the camshaft, the valve lifters must also be replaced. I had a new motor built with a new cam, but do I have to replace the lifters or can I reuse the old ones? They only have about 31k miles on them and look good.
Thanks
Matt
Thanks
Matt
, but Matt didn't say roller lifters, what engine, cam or anything else so I responded with the standard flat tappet answer.
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TECH Senior Member
Joined: Mar 2004
Posts: 14,620
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From: BFE
Originally Posted by 2001GMC
All of you are right IMHO
, but Matt didn't say roller lifters, what engine, cam or anything else so I responded with the standard flat tappet answer.
, but Matt didn't say roller lifters, what engine, cam or anything else so I responded with the standard flat tappet answer.
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Thread Starter
Staging Lane
Joined: Nov 2001
Posts: 60
Likes: 0
From: Saginaw, TX
Guys, I appreciate the input. It sounds like if I'm using a roller lifter/cam setup I'm fine with the reusing them. If I have flat tappet lifter/cam setup then I need to change them when I swap the cam.
Cool, thanks!
Happy Thanksgiving to everyone (in the USA anyway)!
Matt
Cool, thanks!
Happy Thanksgiving to everyone (in the USA anyway)!
Matt
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Cool, thanks!
Happy Thanksgiving to everyone (in the USA anyway)!
Matt
Happy Thanksgiving to everyone (in the USA anyway)!
Matt
To all our service men and women Thread Starter
Staging Lane
Joined: Nov 2001
Posts: 60
Likes: 0
From: Saginaw, TX
sorry, what I meant is Thanksgiving is a US holiday only and not celebrated by other countries. I meant no disrespect to us citizens abroad including our men and women of the services. I have friends and family members in IRAQ now and as an employee of a defense contractor, I take my job very seriously because I know that they're life depends on it.
Happy Thanksgiving to US citizens around the world
Matt
Happy Thanksgiving to US citizens around the world
Matt
