View Single Post
JimCulp JimCulp is offline
Registered User
Join Date: Jan 2006
Posts: 274
Lost another seal on my K27HFS

I've been through two sets of seals on my K27 HFS in the past 2000 miles. At $5-600 per pop, it's starting to dent my wallet, so I'm trying to head off a third replacement.

On this latest set of seals, the gentleman who replaced them said the exhaust side bearing has been getting very hot- enough to discolor that bearing and the exhaust side blades are white (when cool) from heat. His diagnosis was a lack of oil to the bearing resulting in a hot bearing which resulted in a failed seal.

I have good oil pressure into the turbo and the scavenge pump is working properly.

Another theory is that my rich tune (which I requested for safety) may be allowing fuel to get through the exhaust side which then ignites after the turbo resulting in an "afterburner" effect which heats the exhaust side beyond design limits.

If anyone has any suggestions, I'm all ears.
Old 08-21-2008, 09:25 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)