camshaft question
#1
Instructor
Thread Starter
camshaft question
So the way I see it there is no mod to prevent a "spun" camshaft. Correct?
Also when they do fail is there a potential for the valves to hit the pistons or is it just camshafts that will need replacing?
Thanks,
JC
Also when they do fail is there a potential for the valves to hit the pistons or is it just camshafts that will need replacing?
Thanks,
JC
#3
Instructor
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#5
Instructor
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#6
I know about welding or pinning the coolant tubes, but this is the first I've heard of the camshaft issue.
How often does the "spun" camshaft issue pop-up? Is it one of those "Not if, but when" problems?
Edit...Doing a "camshaft" post search now, so insults please. LOL
How often does the "spun" camshaft issue pop-up? Is it one of those "Not if, but when" problems?
Edit...Doing a "camshaft" post search now, so insults please. LOL
#7
Race Car
I don't think I ever saw the end pictures of the pinned cam when I was looking for them. Is it possible to pin them in the car if you've already got the motor out for the coolant fittings?
Craig - this isn't nearly on the level of coolant fittings. The question is are more and more going to happen as our cars age or are they going to be isolated cases still?
Craig - this isn't nearly on the level of coolant fittings. The question is are more and more going to happen as our cars age or are they going to be isolated cases still?
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#9
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This give one an idea of what is involved. The intake camshafts need to be replaced or pinned. This requires the engine to be removed and stripped down to the long block>>a lot of labor...
In the larger scope of things, the coolant fitting at the oil/water heat exchanger fail at a greater rate. I think that there are 6 Rennlisters that have had camshaft failures in the last 2 years..
#11
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Yes, it is..
No you won't disable the Vario cam.. Pinning is a term used to isolate the sleeve from turning inside the hollow camshaft. It does not hinder the function of the cam or Variocam module.
No you won't disable the Vario cam.. Pinning is a term used to isolate the sleeve from turning inside the hollow camshaft. It does not hinder the function of the cam or Variocam module.
#12
Instructor
Thread Starter
Forgive me but then wouldn't that be a way of preventing the failure, to pin it before it goes bad?
#13
Rennlist Member
Given that the failure is not catastrophic, the repair is the same job as the preventative maintenance, and that there has only been a very small percentage of failures to date, it would not make sense to pin it before it fails.
#15
Instructor
Thread Starter
Indeed! THANKS Kevin. Your name pops up all over the forum with answers.