Ford Mustang Forum banner

Status
Not open for further replies.
1 - 5 of 5 Posts

·
Registered
Joined
·
83 Posts
Discussion Starter #1
i got my car out the shop for the second time... i got new forged pistons and rods,and they told me to bring it back and in 500 miles for an oil change...i brought it back and they said now i can get oil changes every 3000 miles. not even 1500 miles .i take my car for a spin and around 2000 to 2900 rpms i hear a tapping noise. i check the oil and it is real low!!! and this is the second time! we pull the oil filter off and find bearing material inside . so now we got to tear the engine down again to replace what ever dried up before more damage occurs. a buddy of mine said it could be the cams also. (comp cams stage 2)..the first time it happen the shop covered the labor because he forgot to mention the oil changes when i 1st got it out. second time im not so lucky...:so any advise is appreciated! thanks ahead of time..
 

·
Registered
Joined
·
5,329 Posts
The shop is responsible for that problem, if they don't want to pay for it, never let them work on your car again. If they can't get it right after 2 tries, likely they never will. My first guess would be that the rings were fitted wrong, or something like that. Did it leak out, or burn off? Its possible they didn't have enough in there or the wrong stuff, but the most likely cause is they made a mistake with the machining or assembly. 3000 miles is fine for an interval after the break-in period. How did you drive it during the break-in? Also, after a fresh rebuild, for the first 1000 miles its best to be really anal about checking the oil, like every time it cools down, you can never check it too much. There are endless possibilities for the cause here, but aside from you beating it right away (not likely) or faulty parts, its gonna be the shops fault, either in using the worng parts, doing a poor job assembling it, or bad machining. There is no way you should be paying for this, and if they try to make you, aside from never going there again, get a lawyer and sue them.
 

·
Registered
Joined
·
83 Posts
Discussion Starter #3
during the break in period , i was driving like a grandpa with bad vision.. the oil that they put in was motorcraft 5w20 6qts...and no oil was leaked out what so ever.
 

·
Registered
Joined
·
7 Posts
Above post is correct. This is poor engine building !
We just did the 1000 mi check on an 621hp 462 cid daily driven (hard) 1967 lincoln cont. That we built last month, we use a graduated beaker to measure oil consumption by draining hot and overnight. Oil consumption for the 1000 mi was 1.24%, i consider up to 5% normal. Your in the 40-60% range !!! Local news stations can do wonders with unscrupulous auto shops if push comes to shove. Ring alignment is crucial, if they messed up on this part, i would assume they didn't use plasti-gauge or high quality pre assembly lube ether. These mistakes would account for all of your symptoms. Good luck.

Dan
ford specialties of las vegas (fslv)
 

·
Registered
Joined
·
83 Posts
Discussion Starter #5
thanks for yalls time
 
1 - 5 of 5 Posts
Status
Not open for further replies.
Top