ROD KNOCK.......NEED HELP

[Gearbanger 101]

spun a bearing

....the tomustang universal answer to all under hood problems.

 

[Nuar]

i had a rod knocking in my original motor at right around 50k. probably a coincidence w/ us both having 00 GT's but yeah i had to get a new motor dropped in. hopefully thats not the case w/ you, but if it is spend the extra money for a stroker or a better motor! ive regretted it ever since!

I dont know about coincidence man.
I'm on my 2nd motor too
WTF man this thread pissed me off. I had to blow 3 k on a motor cause they had some kind of defect in them? I thought I was the only one that blew up my STOCK motor at 61k miles

 

[BurningRubber]

Allright so all the guys that are spinning bearings and blowing their 99-00 4.6's... How much oil are you running?

Im running 5 quarts, which is correct by the dipstick and owners manual but I still have people say 6 quarts is right, no matter what the owners manual or dipstick says. I could see being a quart low and beating on the engine leading to spun bearings...

So is there some kind of connection here, or is it just weird that everyones 99-00 is blowing up?

Nope it's not always consistant with rpms

Read the second line in that post.

 

[the98stang]

Just drop in a cobra motor

 

[Nuar]

ever since day one ive been running between 4.5 to about 4.8 quarts of oil
The dipsticks on these motors are friggin retarded ESPECIALLY if there is new oil in the car.

 

[Mike97gt]

The reason I asked is because it's a known "problem" that at high RPM the timing chain for the passenger side can carry oil up into that head at such a rate, and oil-drainback is so slow, that you can literally empty the pan into the heads leaving the sump low enough that you can starve the mains.

So when we hear of another spun rod bearing I always wonder "Was the engine running at high RPM for a while?" The problem is exacerbated if the oil level was low to begin with...

When the oil level is correct you should not have a oil starvation issue like this at high RPM's But if your 2-3 quarts low thats when you run into problems.

 

[Gearbanger 101]

Just drop in a cobra motor

Swapping from a GT to a Cobra didn't help Tom.

 

[Kilgore Trout]

Swapping from a GT to a Cobra didn't help Tom.

 

[the98stang]

I'm confused

 

[Gearbanger 101]

Tom got rid of his GT, to buy a Cobra and the bottom end went on it almost immediately after he got it.

Try to keep up, damnit!!!

 

[sccplr09]

Is it possible to drop like a 04 cobra engine and trans into my 00 gt????? and thanks for all the help.

 

[Gearbanger 101]

Yes, but it's not gonna be cheap. If you've got to replace the engine, you'd be better off finding another 2V to drop into it for the time being, and building up your existing short block if making big power is your goal later on.

Check out http://www.car-part.com/ in your area. You'll probably find dozens of hits for another 2V engine.

 

[GTCharles]

Dude I have an 01 GT and I just spun a bearing earlyer today and my motors toast now. I'm a tech at a dealership and I know its 6 qts of oil. I just changed it friday and the motor went on me while cruzing at 35 mph in 4th gear today. It sucks I've only got 68,000 on the original motor. I total feel your pain. I dont know if it was a problem with the design or not but I will find out more tommorrow when I call Fords tech hotline from work. I hope you have an extended warrenty like I do, right now its worth every bit of the $1700 I spent for it.

 

[sccplr09]

any new info???? keep me posted

 

[Mike97gt]

Dude I have an 01 GT and I just spun a bearing earlyer today and my motors toast now. I'm a tech at a dealership and I know its 6 qts of oil. I just changed it friday and the motor went on me while cruzing at 35 mph in 4th gear today. It sucks I've only got 68,000 on the original motor. I total feel your pain. I dont know if it was a problem with the design or not but I will find out more tommorrow when I call Fords tech hotline from work. I hope you have an extended warrenty like I do, right now its worth every bit of the $1700 I spent for it.

Are you a Ford tech? If so make sure you take any mods off the car just in case they send a inspector out. One of our techs got his warrenty voided becuase he thought they would not send a inpector out. Cost him 5800 bucks.

BTW. The only really common problem with the modular motor is the spark plug issues.

Your 01 takes 6 qt's??? mine takes 5 qt's Well anyways that one extra quart if yours takes 5 is not going to be the root cause of your motor spinning a bearing.

Did either of you with spun bearings notice any detonation even part throttle.. That can wipe out rod/main bearings in no time.

 

[Gearbanger 101]

Did either of you with spun bearings notice any detonation even part throttle.. That can wipe out rod/main bearings in no time.

...or one of the very fragile top ring lands. Which may be the original posters problem?

 

[GTCharles]

I found that its not a common problem but it has happened to a few ppl. I already removed my program and all my time slips and racing gear that I keep in the car. I heard about the spark plugs though they said that is a problem thats the reason they updated the spark plugs part # to a plug with more threads. So if you do a tune up on your stang make sure its the plugs with about an inch on threads on em.

 

[Mike97gt]

...or one of the very fragile top ring lands. Which may be the original posters problem?

yes very true... that could also be his problem.

 

[kwwheele]

So you're telling me high RPM's for a long time are bad? Found out the hard way yesterday driving against a Corvette. Now I'm hoping to find a shop to put a new crank in and bearings for a relatively good price. Anybody have an idea on how many hours of labor it would take to replace the crank and bearings?

 

[BurningRubber]

So you're telling me high RPM's for a long time are bad?

Yes.