Rod Knock ...*******!
06-17-2009, 06:33 PM
#16
Race Car
Damn boy,, haven't you ever heard a rod knock before...? 
That is a lifter
If it gets varnished oil I have found a qt of auto trans fluid in the oil followed by a quick oil change works to clean them out.....DO at your own risk
It does sound pretty bad so IMO I would pull the cam tower and install a used set of good lifters
That is a lifter
If it gets varnished oil I have found a qt of auto trans fluid in the oil followed by a quick oil change works to clean them out.....DO at your own risk
It does sound pretty bad so IMO I would pull the cam tower and install a used set of good lifters
06-17-2009, 06:44 PM
#19
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On second thought could I just grab the cam tower off an NA engine and swap it in, or are the lifters different? I know the later cams NA have a little more lift/duration but thats not a bad thing in my book.
06-17-2009, 06:47 PM
#21
Race Car
IMO ..No. Not worth the work for a street car.
The NA stuff will swap over fine and the exhaust has a little more lift and duration 10 deg IIRC. I noticed a slight change with the red car but then I went higher compression shortly after so, not much time to really tell. Felt like it liked the higher rpm just a touch more.
Not a huge difference though
The NA stuff will swap over fine and the exhaust has a little more lift and duration 10 deg IIRC. I noticed a slight change with the red car but then I went higher compression shortly after so, not much time to really tell. Felt like it liked the higher rpm just a touch more.
Not a huge difference though
06-17-2009, 08:08 PM
#22
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Just put a big "Powered by Singer" sticker on the back....
The NA lifters are the same as the turbo. You got off cheap this time!!
The NA lifters are the same as the turbo. You got off cheap this time!!
06-17-2009, 09:22 PM
#23
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HAHAHA thats a good one, Chris.
I just picked up a cam tower off an 88 NA. I probably paid a little too much but it was local and that salvage yard has been really helpful in the past. Plus now I have the BIG CAM! I also picked up some ATF fluid to soak the new lifters in since that engine has probably been sitting the yard for at least a month or two.
Thanks everyone for the help, I'll let you know how it turns out.
I just picked up a cam tower off an 88 NA. I probably paid a little too much but it was local and that salvage yard has been really helpful in the past. Plus now I have the BIG CAM! I also picked up some ATF fluid to soak the new lifters in since that engine has probably been sitting the yard for at least a month or two.
Thanks everyone for the help, I'll let you know how it turns out.
06-18-2009, 02:32 AM
#26
Race Car
ATF works wonders pre-oil change to free up stuck lifters and help flush out the engine. I always recommend this as the first course of action since it is very effective and is often the cheapest solution.
If you have a spare cam tower and lifters, soak the lifters in oil then test for any soft ones before using them. Hopefully between the 2 towers you can make a full good set.
The button in the center should not depress by hand, if you can hold one in your hand and push the button in then it is NFG and should not be used. I like to soak them in a thin solvent then work the button in/out a few times before testing them. After sitting they have likely drained out a little and even good lifters may test soft on the first few pushes. I prefer to soak them in solvent one day, push on them several times during the day, then move them to ATF or engine oil and test them a couple of days in a row. Ones that never get firm or are always soft for the first push or two each day get a failing grade.
If you have a spare cam tower and lifters, soak the lifters in oil then test for any soft ones before using them. Hopefully between the 2 towers you can make a full good set.
The button in the center should not depress by hand, if you can hold one in your hand and push the button in then it is NFG and should not be used. I like to soak them in a thin solvent then work the button in/out a few times before testing them. After sitting they have likely drained out a little and even good lifters may test soft on the first few pushes. I prefer to soak them in solvent one day, push on them several times during the day, then move them to ATF or engine oil and test them a couple of days in a row. Ones that never get firm or are always soft for the first push or two each day get a failing grade.
06-18-2009, 04:42 AM
#27
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By your test, only two in the new set are ok so far. I didnt soak them in solvent though. Right now they've been in ATF for about 8 hours and 4 are completely springy, two have a lesser range of travel, and two are completely solid. The condition of the ones in the original cam tower remains to be seen; I haven't finished taking that thing off yet.
06-18-2009, 07:17 AM
#29
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Sounds like an 'Overlocker'.
06-18-2009, 06:45 PM
#30
Race Car
This is why a lot of people buy complete sets of new lifters. They are such a subjective thing. I mean when they are in use they see the full engine oil pressure inside of them making them significantly harder, so maybe ones that are only slightly soft would be okay, but I have no idea how to feel by hand the boundary between okay and not okay, so I only keep the best ones since it is a bit of a pain to get in there and change them out.