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Old 08-12-2006, 11:36 PM   #1
Blk_RS01
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Default Been driving my baby alittle hard lately and...

now everytime i give her alittle gas.. i hear this rattling/knocking noise under the hood..

i checked all the belts and looked around to see if anything is loose.. til my dad looked at me and said something about the cams... started to blow up about racing.

so im wondering.. if it is cams.. will it be easy to fix rather than spend thousands on another motor? which i wouldn't mind but... alittle low in cash.

anybody with any information??
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Old 08-13-2006, 01:51 AM   #2
ScoobyDoobieBlue
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Knocking/rattling could be alot of things, my buddies 240 knocked and 2 weeks later he fried the crank bearings. It could be a rod knock. Just giving you the worst case scenario.
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Old 08-13-2006, 02:07 AM   #3
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Cams? I doubt it. I hope you didn't trash a bearing, cuz that sucks, but I think that's where you're headed dude.
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Old 08-13-2006, 03:10 PM   #4
Blk_RS01
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Quote:
Originally Posted by FalconRS
Cams? I doubt it. I hope you didn't trash a bearing, cuz that sucks, but I think that's where you're headed dude.
if it is a bearing.. whats the estimate on cost wise?
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Old 08-13-2006, 03:41 PM   #5
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Its probably cheaper to get a used short block and throw it in, less time consuming also.
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Old 08-13-2006, 04:37 PM   #6
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is this common among GC/M's?
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Old 08-13-2006, 11:18 PM   #7
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No, headgaskets are.
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Old 08-14-2006, 08:28 AM   #8
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Quote:
Originally Posted by Blk_RS01
is this common among GC/M's?
Headgaskets seem to be the most common problem, but I have known of a few people with spun bearings. The stories all started out the same way too. They were driving hard, then they heard this rattling sound coming from their motor.
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Old 08-14-2006, 09:52 AM   #9
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If it were bearings or cams.. you'd hear it at idle, not just when you give it gas.

Find out where it's coming from, and then we can help you. Start the car, open the hood and give it some gas by turning the throttle body by hand.
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Old 08-14-2006, 10:33 AM   #10
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Or it could be the cam timing belt tensioner. Remove the inspection cover and see if there is ANY looseness to the belt.
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Old 08-14-2006, 03:03 PM   #11
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Quote:
Originally Posted by Beaverboy
If it were bearings or cams.. you'd hear it at idle, not just when you give it gas.

Find out where it's coming from, and then we can help you. Start the car, open the hood and give it some gas by turning the throttle body by hand.
yes even at idle now.. this is my only ride.. so i had to bear the pain and take it slowly to work *which isn't really far* and back..

when it gets alittle cooler later i'll take another look

does anybody know a good place to get a used short block?
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Old 08-14-2006, 03:27 PM   #12
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How many miles on it? I think rattle sounds shouldnt warrant you buying a new short block. Talk about over kill. First properly diagnose the problem instead of just taking wild guesses. Could be as simple as a loose bolt
-Mark
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Old 08-14-2006, 03:28 PM   #13
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Quote:
Originally Posted by Blk_RS01
yes even at idle now.. this is my only ride.. so i had to bear the pain and take it slowly to work *which isn't really far* and back..

when it gets alittle cooler later i'll take another look

does anybody know a good place to get a used short block?
PM ScoobaruRS about it. I think he may have one that would work, but he's in GA. Ask anyway.
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Old 08-14-2006, 03:29 PM   #14
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don't rule out the easy, more simple things like heat-shields.
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Old 08-14-2006, 03:29 PM   #15
BURTONRIDR
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I cant remember if mine started making a ticking noise or not when mine got all messed up... I think it was more like a total loss of power... It ended up being a valve (or two....or three) that were totaly fried and I spent around $1200 having the heads rebuilt with new valves and seals, etc... Anyways one thing to remember, if you have a ej25. Make absolutely sure that all of your timing marks are lined up correctly, and dont go off what the Chilton pictures shows you

Something cheap and easy.. Do a compression check on all of your cylinders.
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Old 08-14-2006, 03:29 PM   #16
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ebay for the shortblock. Check your oil/give it an oil change. How many miles you got?
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Old 08-14-2006, 04:50 PM   #17
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Quote:
Originally Posted by Blurvision
How many miles on it? I think rattle sounds shouldnt warrant you buying a new short block. Talk about over kill. First properly diagnose the problem instead of just taking wild guesses. Could be as simple as a loose bolt
-Mark
Agreed. I thrash on my car weekly. 140k miles. Unless you were bouncing off the revlimiter every gear, I can't see you messed it up too bad. These cars are pretty stout.

See if you can find it with the car parked/revving the motor. if you can't find it on the surface, use a stethoscope on the motor.

Has there been any change in idle or in performance of the car?
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Old 08-14-2006, 08:35 PM   #18
Blk_RS01
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performance wise.. i haven't noticed any changes..

my rs only has 125k miles.. i've changed oil 1k miles ago..

this is the link to a short vid that took for you guys to check out

http://www.youtube.com/watch?v=4WQLViiqeXo

Last edited by Blk_RS01; 08-14-2006 at 08:48 PM.
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Old 08-14-2006, 08:49 PM   #19
iownaspec
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video is borked!
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Old 08-14-2006, 11:18 PM   #20
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That sounds pretty nasty. My wild guess is the valves since the noise is consistent.
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Old 08-14-2006, 11:32 PM   #21
iownaspec
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valves definatly. thats the click of death LOL.
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Old 08-15-2006, 12:24 AM   #22
Blk_RS01
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Quote:
Originally Posted by iownaspec
valves definatly. thats the click of death LOL.
dammit.. can you get a quote from alex for me..?

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Old 08-15-2006, 01:13 AM   #23
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just get ahold of him either on central carolina forums or call folger and ask for him his extension is 220.
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Old 08-15-2006, 03:41 AM   #24
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sounds like lifter tick
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Old 08-15-2006, 12:09 PM   #25
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If it's lifter tick, then I have to ask: What grade oil are you using and have you actually checked it? Lifter tick is nothing to freak out about.
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