IMS Does this sound right?
IMS Does this sound right?
Author
Discussion

Stevej33

Original Poster:

172 posts

224 months

Friday 4th November 2011
quotequote all
Taken from a US forum...

"You will never have an IMS failure if you drive your car 2000 revs and above at all times. Drive a porsche engine as it was intended to be driven. I believe when molicoddling a porsche engine (low revs wrong gear) the IMS bearing does not get enough oil and eventually starts to wear out. By the way I also believe that only 5% of all 99 to 04 996 sold has this problem and just maybe the drivers of that 5% tried to drive them in a way to conserve gas. If you are getting 17 miles per gallon then you are probably in the right gear at the right time. Drive it as it was meant to be driven..."

Does this sound right guys??


anonymous-user

85 months

Friday 4th November 2011
quotequote all
I thought the IMS bearing shouldn't get oil ?
I understand it to be a sealed bearing and when the seal wears oil gets in and washes the grease out leading to the bearing disintegrating eventually.

eagle1

134 posts

229 months

Friday 4th November 2011
quotequote all
Waitforme said:
I thought the IMS bearing shouldn't get oil ?
I understand it to be a sealed bearing and when the seal wears oil gets in and washes the grease out leading to the bearing disintegrating eventually.
Exactly my understanding of this issue.

anonymous-user

85 months

Friday 4th November 2011
quotequote all
Waitforme said:
I thought the IMS bearing shouldn't get oil ?
I understand it to be a sealed bearing and when the seal wears oil gets in and washes the grease out leading to the bearing disintegrating eventually.
It is a sealed bearing, but I don't believe it's oil washing the grease out that causes the problem. In fact most specialists like Hartech think it would be better with an unsealed bearing. I would agree with my engineering hat on. Sealed bearings often cause issues when the grease turns to grinding paste as various contaminants get inside.

Durzel

13,019 posts

199 months

Friday 4th November 2011
quotequote all
Sounds dangerous. Never driving below 2000 RPM would tend to suggest you both never stop for lights, junctions, etc.