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Old 01-22-2006, 04:37   #1 (permalink)
UCNTRY
 
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wiped lobes

whats the easiest way to tell if you have wiped the lobes on a cam with out measuring lift at the valve or cam cam is a crow 211367 its hydraulic too
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Old 01-22-2006, 14:22   #2 (permalink)
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Re: wiped lobes

Metal in the oil.
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Old 01-23-2006, 00:22   #3 (permalink)
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Re: wiped lobes

Quote:
Originally Posted by UCNTRY
whats the easiest way to tell if you have wiped the lobes on a cam with out measuring lift at the valve or cam cam is a crow 211367 its hydraulic too
I was lucky(or unlucky!!) and wiped all 16 lobes, so all i had to do was check one lifter. I pulled the rocker covers and pulled out a couple of lifters with a magnet and instantly found the problem, with no measuring. You can't do it this way with 4V heads.
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Old 01-23-2006, 02:58   #4 (permalink)
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Re: wiped lobes

how did you check it then could you tell just by the lifter or what did you have to measure using a dial gauge
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Old 01-23-2006, 03:02   #5 (permalink)
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Re: wiped lobes

The metal in the oil and the holes in the bottom of 2 of the lifters was enough evidence for me
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Old 01-23-2006, 03:08   #6 (permalink)
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Re: wiped lobes

the only thing i can find in my oil is petrol but when i started it up earlier on one of the lifters was really noisy
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Old 01-23-2006, 03:26   #7 (permalink)
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Re: wiped lobes

Quote:
Originally Posted by UCNTRY
the only thing i can find in my oil is petrol but when i started it up earlier on one of the lifters was really noisy
Ok sounds like you need a new fuel pump after you get the lifter problem sorted.

Turning the motor over by hand with the rocker cover off see if you can establish which lifter is loose.

No wait a minute. Get a new fuel pump and replace the oil and filter. Then start it up and listen for the noisy lifter. If you get a long handled screw driver and put it on the inside edge of the head and listen with your ear against the end of the handle you will easlily pick which is the problem. Remove and inspect the lifter and pushrod for wear thru the hardening. Replace with new if necessary and adjust as per handbook
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Old 01-23-2006, 03:32   #8 (permalink)
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Re: wiped lobes

Is this a new rebuild.

Have you used new cam, rods & lifters? If so have you adjusted the rockres with correct preload?
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Old 01-23-2006, 03:44   #9 (permalink)
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Re: wiped lobes

it doesnt have a fuel pump on it it is electric pump and yeah its got a fuel rebuild 5000 ago and then had to redo heads and the cam looked warn at that stage so got the cam re profiled and new surfaces put on the lifters and also put stud mount roller rockers in at the same time
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Old 01-23-2006, 04:17   #10 (permalink)
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Re: wiped lobes

Quote:
Originally Posted by UCNTRY
it doesnt have a fuel pump on it it is electric pump and yeah its got a fuel rebuild 5000 ago and then had to redo heads and the cam looked warn at that stage so got the cam re profiled and new surfaces put on the lifters and also put stud mount roller rockers in at the same time
If its not a manual pump how did the fuel get into the oil? If the oil has been thinned out by fuel then you may already have damage thru loss of lubrication.

Sort the oil problem 1st then listen for the noisy lifter and remove and inspect
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