- Dec 2, 2005
- Kennett Square, PA
Man, am I getting schooled on Subaru or what? With all the many model permutations and conflicting part numbers from various dealers and online catalogs, it is quite a challenge. Regarding timing belts specifically, for some reason, Subaru uses two different belts on their basic 2.5 SOHC non turbo engine. Does not appear to be any rhyme or reason. The two belts differ only in tooth profile. One is curvilinear and one is modified curvilinear. Gates told me using the wrong belt would cause erratic timing and probably throw a CE light. I got an Aisin kit which is not for my car because it has the wrong timing belt. No problem, I just got the right one. Still a tremendous deal. BUT, the kit also includes a cogged idler pulley. I assume I need to get a different cogged idler to match the belt profile, but I can not get a consistent answer from Subaru. So, with all of that, does anyone know if you can use the same cogged idler pulley on both curvilinear and modified curvilinear belts? When I get the other belt, perhaps the difference in tooth profile will be easy to see.