REKCUT
SILVER Star
Mine runs great other than the use of oil. For me it comes down to why keep driving till it fails when I can do it now and have it working like new as long as im alive.
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Mine runs great other than the use of oil. For me it comes down to why keep driving till it fails when I can do it now and have it working like new as long as im alive.
My rig has 285,000 on it - all my miles except the first 20,000. I replaced the head gasket at 220,000 but only because I was blowing huge amounts of white smoke and had Toyota red all over the bottom of plug number 6. It was pretty obvious the gasket was gone and pulling the head confirmed it. Doing predictive maintenance should be done when you know neglecting it will absolutely result in problems. This isn't true with head gaskets. Many of our rigs will never need a head gasket replacement until the engine needs a rebuild. Why incur that cost when it isn't absolutely needed. In my mind doing a head gasket replacement when the previous gasket isn't blown is like saying "eventually the transmission will wear out" and replacing it as a preventitive measure. Unless you have imperical evidence that the transmission will definitely wear out at a certain usage point (like 300,000 miles), why would you do it?
I've written about this before, but I believe what degrades the head gasket is heat cycling of the engine, not the total miles driven. Every time you heat up the engine from ambient, wear takes place. Once the engine is at operating temp, stuff is pretty stable. If you have a 60 mile daily commute, you may get 400k out of your head gasket. If you have a 3 mile commute, the gasket may fail at 120k. If the truck had a cold start counter gauge on the dash, I think the data would be very interesting, but since all we have is an odometer, the confusing data leads to may different opinions.
Interesting.. I'm no metallurgist but maybe the metal somehow "accustoms" itself to a certain average ambient temp and once the cold/hot differential is increased, that causes it to warp more?^^^ Big thing is the OBD2’s got a slight change in coolant passage sizing in the update H/G.
I haven’t done this convo for a long time, but for some reason I think those specific motors tend to manifest the issue if you say buy a warm region 80 & take it to a colder state/freezes in Winter.
Case in point - my old 40th AE went over 320K on the original owner & HG.
He sold it to a guy who was moving to CO, and within 10K-ish, it was at Slee’s shop getting a new HG.
Owner was a priest who changed churches to one near me, new HG had 30K+ when I bought it.
It had shy 375K when I sold, aside from the HG it was on the original bores, and according to the receipt from Slee the only head part replaced were the valve stem seals - it didn’t smoke nor did it use more than 1/8” of oil between changes.
HTH
IDK…..I bought my black 80 out of SoCal in ‘00 w/ ~115 on it, within 7500mi I’d started the HG swap - 1st job I ever did to the 80.Interesting.. I'm no metallurgist but maybe the metal somehow "accustoms" itself to a certain average ambient temp and once the cold/hot differential is increased, that causes it to warp more?
Have you done an oil analysis? I was losing coolant and it turned out to be a bunch of leaky heater hoses.I'm at 277K and so it shall stay at 277K until there's a fully rebuilt long block with new OEM parts. Why am I doing it now?
- I'm slowly losing coolant and don't feel good about driving it
Why are you putting 91’octane in an engine that is 8:1 compression? 3fe’s will run on piss so it’s been said.Gas was $1.90 for 93 octane 20 yrs ago back in Atlanta, now 20 yrs later, i am in California and paid close to $5 for 91. It didn't stop me now for owning an 80, it won't be the deciding factor for selling yours when it hits $8
i put 91 in so it wouldn't ping on load and high altitude cause i advanced timing to 15 degree and too lazy to dial it backWhy are you putting 91’octane in an engine that is 8:1 compression? 3fe’s will run on piss so it’s been said.
Could this 0401 code be contributing to wear on the HG near the back of the block?
I am in the middle of (insert just about any situation) with my wife who is already skeptical of my life decisions.