How to tell when Lifters need replacing????
03-10-2009, 11:07 AM
#1
Melting Slicks
Thread Starter
How to tell when Lifters need replacing????
I'm planning on doing a cam swap before I pull the car out of storage this spring. I don't have alot of miles on my current lifters, but I was wondering how to know if they need replacing.
I'd rather do them now if they need it so how do I test them?
Thanks
I'd rather do them now if they need it so how do I test them?
Thanks
03-10-2009, 12:03 PM
#2
Instructor
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03-10-2009, 01:21 PM
#4
Safety Car
Check the rollers for pitting or any other visible damage. If you're using a cam with a lot more lift than stock or that will require much higher valve spring pressure, a new set of lifters would be cheap compared to having to go back and change them later.
03-10-2009, 02:18 PM
#5
Instructor
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03-10-2009, 02:23 PM
#6
Safety Car
If he's going with a relatively mild cam, the stock roller lifters would be fine. Your advice seems to assume he's running a flat tappet cam, which he's not.
03-10-2009, 02:33 PM
#7
Instructor
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NO ! but the lifters will get a wear pattern to em ! rollers or not so the price of new lifters is nada !! I bought a new cam & lifters for like 150 & yeah I am goin to go with a flat tappet cam ! In fact It's settin in my living room right now waitin on some new rockers !!
03-10-2009, 02:41 PM
#8
Safety Car
If a set of roller lifters has developed a wear pattern, there is something wrong. With normal operation and use a set of roller lifters can be reused with no problems.
03-10-2009, 04:58 PM
#9
Race Director
What he said. Rollers can be reused if undamaged, flat tappet lifters should never,never be reused with a new cam.
03-10-2009, 05:16 PM
#10
Le Mans Master
To each his own. I'd check mine and if they look good, I'd re-use them.
If you're bucks-up and would feel better, by all means . . .
Jake
West Point ROCKS!
If you're bucks-up and would feel better, by all means . . .
Jake
West Point ROCKS!
03-10-2009, 05:38 PM
#11
Melting Slicks
Thread Starter
Well, its over $200 for a set of roller lifters from summit. cca-850-16
I'd really like to replace them if they are not good.
I'll definately check the rollers, what about the hydraulic part? Is there a way to make sure that it "holds" like it should??
I'd really like to replace them if they are not good.
I'll definately check the rollers, what about the hydraulic part? Is there a way to make sure that it "holds" like it should??
03-10-2009, 06:01 PM
#14
Instructor
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I bought the flat tappet cam & lifters from jegs for 150 with lifters hyd. 515 lift comp cam.
03-10-2009, 11:12 PM
#15
Tech Contributor
03-11-2009, 12:12 AM
#18
Le Mans Master
If it were me, I would replace the lifters. No, it is not neccessary with rollers, but the LS7 lifters are really good. Although, given choices, if your lifters are still good, you might want to think about the opti and timing gears. If you're going with a more aggressive cam, you'll be happier with the LT4 timing set up. And I think the opti goes with out saying, now would be a good time to upgrade to the vented opti.
03-11-2009, 09:02 AM
#19
Melting Slicks
Thread Starter
If it were me, I would replace the lifters. No, it is not neccessary with rollers, but the LS7 lifters are really good. Although, given choices, if your lifters are still good, you might want to think about the opti and timing gears. If you're going with a more aggressive cam, you'll be happier with the LT4 timing set up. And I think the opti goes with out saying, now would be a good time to upgrade to the vented opti.
I'm actually going with a LESS agressive cam. I'm tired of the rough idle. And there is no Opti. I got rid of that thing long ago and run a rear mount distributor with a cam/crank sensor in it.
Are LS7 lifters a strait drop in? For $125 I think I would probably just change them out. Where can I find more info on these?
03-11-2009, 09:42 AM
#20
Le Mans Master
I'm actually going with a LESS agressive cam. I'm tired of the rough idle. And there is no Opti. I got rid of that thing long ago and run a rear mount distributor with a cam/crank sensor in it.
Are LS7 lifters a strait drop in? For $125 I think I would probably just change them out. Where can I find more info on these?
Are LS7 lifters a strait drop in? For $125 I think I would probably just change them out. Where can I find more info on these?