Cheap 86.5 auto on CL $2500
12-07-2012, 11:37 AM
#31
Rennlist Member
I will change it then. Generally, I think people who have an issue with homophobia when exposed to non homo erotic material may have some inner demons to deal with.
Generally of course... that doesnt include any of you
Generally of course... that doesnt include any of you
12-07-2012, 12:23 PM
#32
Rennlist Member
Didn't TBF become more of an issue with '85 and up?
It’s not always obvious what is meant by TBF. I personally always mean Thrust Bearing Failure when I say TBF.
I can see how TBF could represent Timing Belt Failure and is probably a more common definition than Thrust Bearing Failure. One could argue whether that belt is a “timing” belt or a “cam” belt. Porsche refers to it as a “toothed” belt. TBF could even mean “Toothed Belt Failure”.
To many mechanics, thrust bearing failure is not a common term as most have never seen it or even heard of it. For the 928 mechanic though, if not already, it should be common knowledge.
The toothed belt does affect both valve and ignition timing but its primary purpose is to “drive the camshafts”. So, from here on, let’s refer to the toothed belt as a “cam” belt and “cam belt failure” as CBF.
Yep, that’s my story and I’m stickin’ to it!
TBF = Thrust Bearing Failure
CBF = Cam Belt Failure
Peace,
Denny
It’s not always obvious what is meant by TBF. I personally always mean Thrust Bearing Failure when I say TBF.
I can see how TBF could represent Timing Belt Failure and is probably a more common definition than Thrust Bearing Failure. One could argue whether that belt is a “timing” belt or a “cam” belt. Porsche refers to it as a “toothed” belt. TBF could even mean “Toothed Belt Failure”.
To many mechanics, thrust bearing failure is not a common term as most have never seen it or even heard of it. For the 928 mechanic though, if not already, it should be common knowledge.
The toothed belt does affect both valve and ignition timing but its primary purpose is to “drive the camshafts”. So, from here on, let’s refer to the toothed belt as a “cam” belt and “cam belt failure” as CBF.
Yep, that’s my story and I’m stickin’ to it!
TBF = Thrust Bearing Failure
CBF = Cam Belt Failure
Peace,
Denny
Some say ThBF (<-Maybe this will catch on) effects S3's (85-86) but based on all the failures I have read about, I think it's much more likely on 87+. Does anyone actually know of an S3 ThBF? I have a PKlamp in my S3, but didn't see much movement before I installed it.