986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - When did Porsche change over to the bigger IMS?

mikefocke · 11-27-2010, 10:21 AM

when I asked him what 987 year was best for the IMS retrofit...

Quote

The MY02-05 should be a single row bearing, but like I have on there (mike adds - his web site), we have seen some MY05 cars with the new style IMS (MY06-08m, which cannot be serviced because the bearing is a larger diameter than the hole in the rear of the case) and even some with dual row bearings (I don’t have an explanation for that!). But being that I’ve only ever seen 3 engines that don’t fit the norm, I’m willing to generalize that the MY05 is single row.

Yes, the housing bore in which the bearing resides, along with the casting for the sprocket and ims flange are significantly different in the MY06-08 cars with the revised (3rd) IMS.

If the IMS has a dual row bearing or smaller single row bearing, both can be serviced with our retrofit kits.

Endquote

Jake of flat6 sells a cpo engine which has about a half dozen of the most serious potential failure parts replaced with better parts (including the IMS) ...buy a great car with a blown engine and swap out the engine.

11-27-2010, 10:21 AM	#5
mikefocke Registered User Join Date: Aug 2005 Location: Sanford NC Posts: 2,537	Charles has said when I asked him what 987 year was best for the IMS retrofit... Quote The MY02-05 should be a single row bearing, but like I have on there (mike adds - his web site), we have seen some MY05 cars with the new style IMS (MY06-08m, which cannot be serviced because the bearing is a larger diameter than the hole in the rear of the case) and even some with dual row bearings (I don’t have an explanation for that!). But being that I’ve only ever seen 3 engines that don’t fit the norm, I’m willing to generalize that the MY05 is single row. Yes, the housing bore in which the bearing resides, along with the casting for the sprocket and ims flange are significantly different in the MY06-08 cars with the revised (3rd) IMS. If the IMS has a dual row bearing or smaller single row bearing, both can be serviced with our retrofit kits. Endquote Jake of flat6 sells a cpo engine which has about a half dozen of the most serious potential failure parts replaced with better parts (including the IMS) ...buy a great car with a blown engine and swap out the engine.