Design and component longevity issues

LMWatBullRun · **Posted:** Fri Jan 04, 2013 9:56 pm

There seems to be a recent rash of RHGF (Random Head Gasket Failure) lately.

Joe Romas · **Posted:** Sat Jan 05, 2013 10:54 am

papaindigo wrote:

Interesting question. I've never seen documented even semi-official production numbers If one is focusing on the KJ with the 2.8L then I'd love to see valid #s for:
2. US market production/sales for 05 and 06. (NOTE - I'm not sure if that market included Canada or not; info is unclear).

FYI numbers are reported are for the NORTH AMERICAN MARKET and last time I checked that meant Canada too :BANANA:

The first page of the F-37 recall notice says "applies to vehicles produced Through November 6, 2005"
Lower on the page it says "...ON ABOUT 11,200 OF THE ABOVE VEHICLES MAY FAIL"

We know that includes ALL of the 2005 production and some 2006 production. We also know they stopped producing them in April 06. That's an official date stated somewhere.
Believe what you want but these numbers are more then "even semi official". It's anyone's guess how many were produced in the final 6 months :juggle:

Did you read Sam has written "IIRC stock revs/mile is 721 for the speedo, and 725 for the odometer" :?:

Sure looks like unmodified units give different readings :?:

So that leads me to think your "dead on" speedometer and odometer programming has been changed :BINGO:

I've not found concrete rev's per mile for our stock 225/75/16 tires but there is clearly a 4 revolution per mile difference in the two readings :seuss:

papaindigo · **Posted:** Sat Jan 05, 2013 12:01 pm

Joe - I imagine I saw the F-37 recall, at least I think I vaguely remember having it done on my 1st 05, but in any case I'm more than happy to rely on you for what it said regarding the production figure of 11,200 thru 11/6/2005 but that still sort of leaves the question of how many were sold in the N. American market during the 05 and 06 model years still unanswered. The additional months of production would suggest somewhere between 15,000 and 20,000 but that's just a guess. We may never know for sure and I'm not sure it matters all that much in the long run.

As to my speedo/odometer readings being almost dead on per GPS. As I noted the lack of error differs from my original 05. It's certainly possible the PO had those readings adjusted. All I know is I did not have any adjustment done unless the GDE and/or TCM tunes did something which I doubt as stoutdog's speedo/odometer reading errors are more in line with what you and others report with those tunes. If the PO did have something done I wonder what they did as it worked but I have no contact with the PO.

LMWatBullRun · **Posted:** Wed May 08, 2013 7:38 pm

On the rocker failure threads a number of people seem to be having rocker issues around 100k miles. I am wondering whether the mysterious belt failures/ trashed rockers so many have reported are simply wornout rockers?

Thoughts?

Design and component longevity issues

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