I think I made a boo boo.

d3ll · Dec 23, 2007

Please anyone, tell me how bad this is. I did a burn out in my 99 GT 5 speed up to 6K rpm. Afterwards, I noticed a tapping at the 4000 rpm range in neutral, and at 3500 when in gear. How bad is the damage?

DTNODYA · Dec 23, 2007

You may want to elaborate a little. Did you hold it at 6K for a few seconds or minutes, etc.??

Spro · Dec 23, 2007

four six · Dec 23, 2007

OMG you ruined you motor!!!!
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IDK you need to post more info.

deftsound · Dec 23, 2007

probably spun a bearing

Smokeurhonda · Dec 23, 2007

4.6's love to spin bearings

d3ll · Dec 23, 2007

DTNODYA said:
You may want to elaborate a little. Did you hold it at 6K for a few seconds or minutes, etc.??

Naw, it hit 6000 and I let off of it. I'm hoping that I didn't irreversable damage, if so, is it hard to throw a 32 valve in it's place?

darkside03gt · Dec 23, 2007

is it a tap or a rattle? how loud is it? if its a rattle its then it could be your throwout bearing. when you spin a rod bearing usually you hear it at ALL rpms.

Bad92GT · Dec 23, 2007

wow.. if the tap increases with RPM's, then its probably a rod.. funny thing is my smoking (sorta) 4.6 npi has hit the limiter more then most cars and still rolls around great

d3ll · Dec 23, 2007

It's more of a tap, not a rattle. Is there a way I could post audio in here?

darkside03gt · Dec 23, 2007

Bad92GT said:
wow.. if the tap increases with RPM's, then its probably a rod.. funny thing is my smoking (sorta) 4.6 npi has hit the limiter more then most cars and still rolls around great

+1

I think the year also plays a big roll because I've read serveral time here and on other forums that 99-00s are prone to spinning rod bearings

d3ll · Dec 23, 2007

Bad92GT said:
wow.. if the tap increases with RPM's, then its probably a rod.. funny thing is my smoking (sorta) 4.6 npi has hit the limiter more then most cars and still rolls around great

It does increase with the rpm.

d3ll · Dec 23, 2007

So if it is a rod, how much money and time am I looking at?

Bad92GT · Dec 23, 2007

d3ll said:
So if it is a rod, how much money and time am I looking at?

depends on the route you take... you can buy a stock shortblock out of another 4.6 99+ vehicle, or rebuild your original one. If your in hurry i'd just buy another motor out of a crown vic and slap it in there.. use your cover and all the supporting mustang specific and roll on

the98stang · Dec 23, 2007

compression test/leak down test before you come to a conclusion

PUNISHER RACING · Dec 23, 2007

could of collapsed a lifter

d3ll · Dec 24, 2007

the98stang said:
compression test/leak down test before you come to a conclusion

Will do, I will see if I can find a place to get it done tomorrow. Thanks.

scupking · Dec 24, 2007

I think it should be fine. I have had mine up to 6,500 when I changed my reve limtr and shift points. I only did that once and then changed it. Right now I have it set for 6k. I have also bounced it off the limter a few times and that is now set at 6,250. She is still running very strong.

Spro · Dec 24, 2007

PUNISHER RACING said:
could of collapsed a lifter

These cars dont have lifters.

deftsound · Dec 24, 2007

scupking said:
I think it should be fine. I have had mine up to 6,500 when I changed my reve limtr and shift points. I only did that once and then changed it. Right now I have it set for 6k. I have also bounced it off the limter a few times and that is now set at 6,250. She is still running very strong.

i agree, i have my shift light set at 6k and my car has 101k now and the biggest problem ive ever had was the iac going out....and im blown....i think if you take care of your car, use synthetic oil and treat it right you can have as much fun as you want reving past 6k and not have problems..these motors love the top end

I think I made a boo boo.

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