wierd problem
#1087806
10/03/11 07:35 PM
10/03/11 07:35 PM
|
Joined: Jun 2005
Posts: 310
western Ky
CraigS
OP
enthusiast
|
OP
enthusiast
Joined: Jun 2005
Posts: 310
western Ky
|
Friday nite,I was doin my burnout in my 67 barracuda racecar,440,when halfway through it started missing bad ,i pull it up to the line and its missing hard ,like its running on 6 or something.Well ,i back it up ,drive to the pit,pull a couple plugs ,they are fine.Pull a valve cover,and the number one intake pushrod is laying in the hole,looked down to see yhe lifter also out of its bore.came home ,pulled the intake,and number 8 pushrod(intake also) is laying out to.There is no wear at all on anything,the adjusters on the rockers are still tight and where they were set,lifters are not collapseed or worn,pushrods are not bent.no nothing.What could have happened?This has all my friends/experts stumped,any thoughts guys????
thanks craig
|
|
|
Re: wierd problem
[Re: CraigS]
#1087813
10/05/11 12:01 AM
10/05/11 12:01 AM
|
Joined: Aug 2003
Posts: 43,096
Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,096
Bend,OR USA
|
Last edited by Cab_Burge; 10/05/11 12:02 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: wierd problem
[Re: CraigS]
#1087814
10/05/11 01:39 AM
10/05/11 01:39 AM
|
Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
|
master
Joined: Oct 2003
Posts: 7,506
Az
|
Only way the pushrods can come out is excessive clearance. If nothing is bent / broken, you didn't over rev it, and the lash was set properly, you had valves hung open or you have weak or broken valve springs. Hung valves would be my guess. Run a leak-down or comp test on those holes. You my be able to see valve marks on the pistons with a light in the spark plug hole also. Did you run it hotter than normal?
Fastest 300
|
|
|
Re: wierd problem
[Re: Cab_Burge]
#1087816
10/05/11 09:59 PM
10/05/11 09:59 PM
|
Joined: Jan 2007
Posts: 3,695
nc
emarine01
master
|
master
Joined: Jan 2007
Posts: 3,695
nc
|
Quote:
Dude, do yourself (and the engine) a favor and drop the oil pan and check ALL of the rod bearings   I have lost lifters due to valve train failure and you always, unless the block has lifter bores that are bushed, loose oil pressure, it only takes around 15 seconds of running with no oil pressure to start removing(pushing it out) the oil from the rods and crankshaft   Check everything you can so it doesn't end up hurting you, the motor , the car or all three
 2X, good advice
|
|
|
Re: wierd problem
[Re: emarine01]
#1087817
10/05/11 11:49 PM
10/05/11 11:49 PM
|
Joined: Dec 2009
Posts: 20,622
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
|
Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,622
in a cattle trailer down by th...
|
Quote:
Quote:
Dude, do yourself (and the engine) a favor and drop the oil pan and check ALL of the rod bearings I have lost lifters due to valve train failure and you always, unless the block has lifter bores that are bushed, loose oil pressure, it only takes around 15 seconds of running with no oil pressure to start removing(pushing it out) the oil from the rods and crankshaft Check everything you can so it doesn't end up hurting you, the motor , the car or all three
2X, good advice
with this also. As well as checking to see if the pushrods are rubbing somewhere on the heads.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
|
|
|
Re: wierd problem
[Re: CraigS]
#1087821
10/07/11 06:25 PM
10/07/11 06:25 PM
|
Joined: Aug 2003
Posts: 43,096
Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,096
Bend,OR USA
|
Quote:
tahts funny,angry,what you said about the loss of oil pressure ,cause thats what i believe also,but all these experts around here say that is not a problem cause the crank oils first before it goes to the lifters.But if there is a huge 1/2 inch hole in the oiling systrm it still drops the pressure to 0 .,right?
It will absolutely drop to zero when the lifters come out on almost all of the late model Mopar V8   My Duster has a BB stroker in it with the 1970-71 Street Hemi and 440 Six Pak 6 quart oil pan(works god ) The motor is moved back a little also  I have had other A bodys with BB in them and have remove the oil pans with the motor in the car, it is not a piece of cake but it can be done Start by removing the drag link from the idler arm and steering box and drop one side of the tie rod off of the spindle and slide all of it out of the way and then remove the oil pan, several of the oil pan bolts in the front of the motor under the K member have to be removed with a wrench instead of a socket but it is doable with a little patiences and determination Check every rod bearing and maybe several main bearings
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
|
|
