3 more IMS reports

[harryrcb]

Originally Posted by Brad Roberts

I have seen NO 2.5 failures. Doesn't mean it won't/cant happen, but I have seen none and I have been involved with the cars since 1999, racing/time trial/autoX since late 04. The 2.5 doesn't turn the RPM that the 2.7/3.2/3.4 turn, it doesn't see the same heat etc.

I have pulled apart a LOT (20+) blown 2.5's, a couple had questionable bearings, but none of them had failed completely.



B

Brad I have a 2.5 now that has jumped timing but I have not pulled the bearings out to see if that was the cause. I retimed the engine but one of the cylinders has low compression. comming out the bottom end that's why I did not bother with the IMS. Now, however, I will have to pull the bearing to see it that was the cause. Will let you guys now end of next week

[seningen]

Originally Posted by harryrcb

Brad I have a 2.5 now that has jumped timing but I have not pulled the bearings out to see if that was the cause. I retimed the engine but one of the cylinders has low compression. comming out the bottom end that's why I did not bother with the IMS. Now, however, I will have to pull the bearing to see it that was the cause. Will let you guys now end of next week

Be careful that its not the whole IMS gear shifting on the tube.

The early IMS tubes have this failure mechanism.

mike