Bob70challenger
Member
I have developed a bad lifter in my 340 A66 Challenger. The engine only has 10K on it. Should I do the entire cam or take a chance with just replacing the lifter.
Bad lifter
- Thread starter Bob70challenger
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Chryco Psycho
Well-Known Member
It depends why the lifter went bad if the bottom looks OK & it just will not hold pressure then a new lifter should be fine . if there are any signs that the lifter is not rotating or wear on the bottom which you can check with a straight edge , then the cam probably caused the problem & I would replace everything .
It also depends what cam is in there & if it is worth putting a better cam such as a Lunati VooDoo
It also depends what cam is in there & if it is worth putting a better cam such as a Lunati VooDoo
DetMatt1
Well-Known Member
Let me guess, Comp Cams….
Bob70challenger
Member
No, actually mopar purple p4452761
Bob70challenger
Member
Yes I wish I knew why it went bad, have not done a visual inspection yet but most people around here say to be safe replace both. It was the mopar cam p4452761.
Bob70challenger
Member
No mopar purple p4452761
DetMatt1
Well-Known Member
Bummer!
Steve340
Well-Known Member
Assuming the lifter is correctly pre loaded.
There are lifter treatment oil additives you could try. Here we have one called Proma. I have used this stuff in older Mitsubishi engines and it worked. You need to put a new bottle in at each oil change though.
Failing that identify which lifter is playing up and pull off the intake and inspect the lifter. If the lobe and face are OK the lifter can be pulled apart and cleaned out and checked.
If it is bleeding down sometimes crud in the engine stops the little valve in the lifter from closing off properly.
There are lifter treatment oil additives you could try. Here we have one called Proma. I have used this stuff in older Mitsubishi engines and it worked. You need to put a new bottle in at each oil change though.
Failing that identify which lifter is playing up and pull off the intake and inspect the lifter. If the lobe and face are OK the lifter can be pulled apart and cleaned out and checked.
If it is bleeding down sometimes crud in the engine stops the little valve in the lifter from closing off properly.
moparleo
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Only 10 thousand miles on the engine. Is there a backstory to this engine you haven't told us ? How stock is it and how do you drive it ?
Bob70challenger
Member
Ok bummer it went bad or bummer on my choice of cams
Bob70challenger
Member
Yea, theres always a back story.lol. Had it rebuilt about 30 years ago and was bored 30 over. Shop did a bad job so had it done again and they had to do another 10 over. Right now it has 10k on the current build, dont drive it too much,
DetMatt1
Well-Known Member
Bummer it went bad.
Bob70challenger
Member
Bob70challenger
Member
I know right!
moparleo
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Yep, pretty much was the last rebuild on the block. .040 on a 340 gets pretty thin.
i_taz
Well-Known Member
Could just be dirt... the first time I ever heard of BG products my mechanic throw a can in our 4 banger when it developed a hard tick...problem solved....
71droptop
Well-Known Member
That sucks because you start to question other things. My engine felt like it was running out of fuel. Checked the usual and found the fuel pump push rod was shorter than what it should have been.
A friend asked me if i cut open the oil filter to look for metal. Oh ****. Turns out the engine builder lied to me- never primed the oil pump.......... Other problems as well. Pulled the motor-started over.
A friend asked me if i cut open the oil filter to look for metal. Oh ****. Turns out the engine builder lied to me- never primed the oil pump.......... Other problems as well. Pulled the motor-started over.
DetMatt1
Well-Known Member
But not surprising.
