Re: Sierra’s Quality Control Non-Existent?

[David Stanton]

I’ve used a lot of Sierra parts and most of them work OK, but I have had to pry hard with a big screwdriver to get those coil mounting holes to line up and force the laminations back far enough so they don’t rub; but I’ve gotten so I can do this pretty fast so I still use them. I use a lot of their impellers, but not for the low profile 9.9 and 15 Johnsons of the 1980s and early 1990s – their impellers, even with their new housings did not cool at a very slow trolling idle….in three different motors. The other thing I found was when I got a lower unit seal kit for a 1996 Mercruiser 4.3 liter V6 out-drive, the two seals for the driveshaft were not different OD like was needed, and when I got the Mercury kit, I found Mercury had made a revision, mounting these two seals in a slick, angled carrier to keep them from dislodging (as one of my original ones did) – Sierra did not have this modification.
Dave