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-   4.6L (1996-2004 Modular) Mustang (https://mustangforums.com/forum/4-6l-1996-2004-modular-mustang-7/)
-   -   is it a really bad cranshaft? (https://mustangforums.com/forum/4-6l-1996-2004-modular-mustang/569627-is-it-a-really-bad-cranshaft.html)

mustang90242 10-22-2009 04:51 PM
is it a really bad cranshaft?
 
i took my 1999 cobra to several mechanics to see what was wrong with my car because it was doing a ticking noise after 2300 rpm

and 3 mechanics said my crankshaft needed to be replaced

i dont really trust them....could that ticking noise be because of a bad crankshaft?

JC316 10-22-2009 05:44 PM
Originally Posted by mustang90242 (Post 6587255)
i took my 1999 cobra to several mechanics to see what was wrong with my car because it was doing a ticking noise after 2300 rpm

and 3 mechanics said my crankshaft needed to be replaced

i dont really trust them....could that ticking noise be because of a bad crankshaft?
They probably think that it spun a bearing. If so, then the crankshaft COULD need replacing, or it could just need to be machined.

dimebag 10-22-2009 09:13 PM
If its a rod bearing toulll get a knock, not a tap.and it'll do it at idle too. I'd pull the valve covers 1st. And if the crank is hurt u can usually go .010 under, get bearings for that app. Unless the stress cracked it then its fubar

EagleStroker 10-22-2009 09:39 PM
Originally Posted by dimebag (Post 6587858)
If its a rod bearing toulll get a knock, not a tap.and it'll do it at idle too. I'd pull the valve covers 1st. And if the crank is hurt u can usually go .010 under, get bearings for that app. Unless the stress cracked it then its fubar
What he said.

mustang90242 10-22-2009 11:13 PM
Originally Posted by JC316 (Post 6587340)
They probably think that it spun a bearing. If so, then the crankshaft COULD need replacing, or it could just need to be machined.
do you know an estimate of what i should be expecting for the repair

mustang90242 10-22-2009 11:15 PM
Originally Posted by dimebag (Post 6587858)
If its a rod bearing toulll get a knock, not a tap.and it'll do it at idle too. I'd pull the valve covers 1st. And if the crank is hurt u can usually go .010 under, get bearings for that app. Unless the stress cracked it then its fubar
it sounds normal when its at idle

wat do you mean .10 under?

EagleStroker 10-22-2009 11:18 PM
Originally Posted by mustang90242 (Post 6588127)
it sounds normal when its at idle

wat do you mean .10 under?
If the journal is damaged but not cracked, they will grind the crank. Each step down is in "10s"

mustang90242 10-22-2009 11:40 PM
Originally Posted by EagleStroker (Post 6588135)
If the journal is damaged but not cracked, they will grind the crank. Each step down is in "10s"
do you know how much that will cost by a repair shop?

97modifiedmustangGT 10-23-2009 02:32 AM
to get a crank ground it can be anywhere from 50-100 bucks

Xemeth 10-23-2009 11:35 AM
Originally Posted by 97modifiedmustangGT (Post 6588423)
to get a crank ground it can be anywhere from 50-100 bucks
True, but judging from the OP's posts, I highly doubt he'll be tearing down the motor himself and then re-assembling everything.

OP, you're looking at a few grand.


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