If this 03 cobra was yours?

[hotcobra03]

Pulled engine remove both heads and send them to machine shop.i sent the heads with cams. Re installed car ran about 500miles than cam gear on pass. Side broke .fix on side of the road via parking lot. Drive home 60miles next morning drive car bang now otherside broke.didnt think i had to touch heads. Shoud i have re checked if the bolts were tight?

 

[BK_CAULEY]

WTH are you talking about?

 

[hotcobra03]

Should i raise hell with head shop they rebuilt the heads i only installed them.but now its how did they break ? Bolts had to be loose who to blame me or them?

 

[BK_CAULEY]

specifics man specifics?

how did the cam gear brake? did the actual gear fail or did the bolts back out and cause a failure?

 

[hotcobra03]

Thats what the big question is .UM jump in anytime.the bolts are loose now but gears are broken.im more tired than pissed ive got like 80 hrs into this job while a 40hr work week.

 

[Uncle Meat]

Should i raise hell with head shop they rebuilt the heads i only installed them.but now its how did they break ? Bolts had to be loose who to blame me or them?

Thats what the big question is .UM jump in anytime.the bolts are loose now but gears are broken.im more tired than pissed ive got like 80 hrs into this job while a 40hr work week.

Okay lets get the facts straight first.

You sent both heads to the shop in fully assembled form (cams, rockers, followers, etc.) correct?

Exactly what was the shop paid to do to the heads?

If they were paid to disassemble, repair/replace parts, and then reassemble you might want to challenge them on why the cam sprockets weren't apparently torqued to spec.

U.M.

 

[hotcobra03]

Yes they were complete.they dis assembled inspected and re assembled. Paid 900 bucks.and it was both heads.it was 405 for gaskets and bolts and 120 for engine and special tools.150 to fix cam gear on pass. Head .now 200 more

 

[Uncle Meat]

Yeah if I were you I'd go back to that shop and raise some hell. If they reassembled them it should have been done to factory specs.

U.M.

 

[hotcobra03]

Called shop the owner is trying to say they dont have to remove them.i like 2 know he installed the tensioner with out removing them

 

[TheDukeOfEarl]

You Fixed a broken cam gear on the side of the road? Are you a JB weld master? Do you carry spare cam gears in the glove box? ROFL

"cam gear on pass. Side broke .fix on side of the road via parking lot."

After it went boom how long did the engine keep spinning? You may have hit some valves. I would bore scope it before I ran it again and did even more damage.

 

[LaserSVT]

You Fixed a broken cam gear on the side of the road? Are you a JB weld master? Do you carry spare cam gears in the glove box? ROFL

"cam gear on pass. Side broke .fix on side of the road via parking lot."

After it went boom how long did the engine keep spinning? You may have hit some valves. I would bore scope it before I ran it again and did even more damage.

This whole thread is confusing.
The shop should pay for all dammages if they broke due to ... well anything. You pay to have them rebuilt and they only last 50 miles? Sounds like one terriable shop IMO. How close you live to Corsicana? Cause I wana steer clear of that place

So really though, how did you fix a cam sproket on the side of the road? Double sided stickey tape?

 

[hotcobra03]

I used some of that 200mph tape!! Sounds like you never had the pleasure of pulling a valve cover on one of these 4.6

 

[TheDukeOfEarl]

I used some of that 200mph tape!! Sounds like you never had the pleasure of pulling a valve cover on one of these 4.6

If you are talking to me then you are just a bit wrong. I race these cars and several others. I have 2 spare motors and 2 more short blocks. All are Teksids. I also crewchief for a NASA ST1 06 Z06 and we are building 2 motors for that right now. We just had some head issues where the valve contacted the piston due to bad seat pressure. We are rebuilding the entire motor.

200 MPH tape to fix a broken cam gear? I have seen some really bad mickey mouse but never that one.

 

[hotcobra03]

Had to fix car thier this is my only car we live in the deep country south of the city.u say u have engine knowledge .im a driveshaft and frontend specialist this is my first engine rebuild.since doing this gear the other side broke i have pulled heads off 6 valves have hit pistons.my question is whats my best way off getting metal particles out of bottom end i found 99% of broken gears?

 

[TheDukeOfEarl]

Had to fix car thier this is my only car we live in the deep country south of the city.u say u have engine knowledge .im a driveshaft and frontend specialist this is my first engine rebuild.since doing this gear the other side broke i have pulled heads off 6 valves have hit pistons.my question is whats my best way off getting metal particles out of bottom end i found 99% of broken gears?

Really you should completely take it apart and have it cleaned and then everything re checked as its assembled. How long did it run with the broken parts? You may find that a lot more is damaged.

 

[mustang50v8]

this thread hurts my head. the original poster needs to start talking in full sentences (or sentences at least) and not just stick periods in random places.


sounds like you have a problem with something which you assumed were the heads. so you removed the heads and sent them to the shop without actually knowing what was wrong. you received the heads back and just threw them on the car. then you were driving down the road and something happened (although quite what happened i cant be sure) so you fixed it with some tape in a parking lot. now you have lots of damage and are pissed.


to me it sounds like you got the heads back put them on and didnt attach the timing chain properly and caused more damage when the pistons smashed the valves due to your poor assembly.