I have developed yet ANOTHER problem!
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Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
So far yes, just one.
At least it's not to god awful expensive.
http://m.summitracing.com/parts/sum-k5200
At least it's not to god awful expensive.
http://m.summitracing.com/parts/sum-k5200
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Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
I have a feeling that the lifter locked up solid and as such, was keeping too much pressure on the cam. I have comp cams double spring valve springs with a 125lb seat pressure. Transferred through the rocker, that's close to 250 pounds riding on the cam if a lifter failed.
I will inspect the lifter later tonight when I get home. Between work and school, I don't have much daylight left
I will inspect the lifter later tonight when I get home. Between work and school, I don't have much daylight left
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Lead Driver
Joined: Jul 2011
Posts: 8,679
Likes: 191
From: On the Edge of the Desert
Originally Posted by MIKES 68 F100
oh that sucks
Thinking about it more. Night before last I was ripping around and hauling a$$, satisfying my need for speed and enjoying the monstrous roar blasting from the pipes. Something probably went wrong at that time, and my commute the next day did it in.
Elder User
Joined: Dec 2006
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From: Sudbury, ONT.
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Lead Driver
Joined: Jul 2011
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From: On the Edge of the Desert
The lifter must have failed and caused this. I've been running this cam and engine for close to 20,000 miles.
I think I might start running 15-40 diesel oil for its higher detergent and zinc levels.
I think I might start running 15-40 diesel oil for its higher detergent and zinc levels.
Senior User
Joined: Jan 2012
Posts: 270
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From: Ozark Mo
im no engine building guru, but if you have bent a rod and blown out a lifter, is it possible that your rods are the wrong length? or your lift on your cam is too high for your rocker and or have the wrong size rocker? like a 1.6 besides a 1.7?
im asking out of curiosity as I am building myself a motor. educating myself I guess you could say.
im asking out of curiosity as I am building myself a motor. educating myself I guess you could say.
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Lead Driver
Joined: Jul 2011
Posts: 8,679
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From: On the Edge of the Desert
Yes that would be a very logical assumption, and in most cases you'd be right. But the geometry is good on it. I will be rechecking it when I go to put things back together.
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Lead Driver
Joined: Jul 2011
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From: On the Edge of the Desert
I have identified the root of the problem. The hydraulic lifter is locked up solid. I put it in my arbor press and couldn't get the plunger to move at all.
For those of us that have never seen what a lifter looks like after this happens... You can see just how dished out it got. And the wear pattern created by the wiped out cam lobe.
For those of us that have never seen what a lifter looks like after this happens... You can see just how dished out it got. And the wear pattern created by the wiped out cam lobe.
Fleet Mechanic
Joined: Aug 2014
Posts: 1,728
Likes: 50
From: Charleston, SC
I have identified the root of the problem. The hydraulic lifter is locked up solid. I put it in my arbor press and couldn't get the plunger to move at all.
For those of us that have never seen what a lifter looks like after this happens... You can see just how dished out it got. And the wear pattern created by the wiped out cam lobe.
For those of us that have never seen what a lifter looks like after this happens... You can see just how dished out it got. And the wear pattern created by the wiped out cam lobe.