Started the teardown

Don't mean to hijack this thread, but, would you recommend an oil cooler? The kind that relocates the oil filter and feeds the oil through a small radiator-like cooler.


I'm repurposing a Kohler engine oil filter adapter from my dad's work. I'm adding another intercooler for the tranny and engine because i do a lot of highway driving at consistent speeds above 70mph.
 
Don't mean to hijack this thread, but, would you recommend an oil cooler? The kind that relocates the oil filter and feeds the oil through a small radiator-like cooler.

an oil cooler won't hurt anything, but won't fix an issue of infrequent oil changes...on a 'regular' FS engine anyway.

the problem isn't just heat, its oil condition overall...As it gets dirtier, it'll stick in those piston skirt holes more...once it sticks there, then it will over heat and partially burn...making it sort of permanent until a tear down...

So even with an oil cooler you should try an keep up with oil changes...Its hard to explain quickly, but the problem i mentioned isn't a 'performance heat' type of thing...its not that the engine is being driven hard and is breaking down the oil from insane cylinder temperatures (that is where oil coolers come in)...its a localized heat issue exploited from an engine with piston coolers, high stroke and high piston acceleration...and oil filtering is actually what keeps the problem at bay the most it seems, at least from what i've read digging around this forum...Thats why i'm saying keep up with the oil changes.

lastly, i'm not trying to freak anyone out...this isn't a problem with the FS that will lead to any real failure...its just why they eventually burn some oil...this had nothing to do with the OP's tear down also, although he did mention the oil changes not being ideal...so it might be one of a few problems that caused...
 
Thanks for all of the advice. I run mobile1 in my 6.0 PowerStroke it is most likely what I will run in this engine also. I would probably just buy it in the 5 quart or gallon size to bring the price down a bit. My 6.0 takes 15 quarts :)

Dik
 
Would you recommend opening up the skirt holes?

yeah, what cc said. Just use good filters, good synthetic oil, and change it at 7500 miles or so...or at least once a year...that alone with normal driving is good for nearly 200,000 more miles...at least a lot of guys have gotten that far anyway.
 
Dropped the block, crank, rods and pistons and head off at the machine shop today to have it all checked out cleaned, polished and magged. Hopefully it all checks out ok.

Dik
 
Good news, the block, crank, rods and pistons were all good. The crank was able to be polished and the block only honed. They said they had a bit of trouble getting one of the squirters out but finally got it. I pick everything up tomorrow and will begin reassembly. I have to get it done and back in since I am moving and have to be out of my current place by the first of the year.

Dik
 
Got everything back from the machinist yesterday. The crank only needed a polishing, and the block only needed honing. The head was still flat within .0015". The rods did get re-sized and I was amazed how clean everything come back, everything looks brand new. Re-assembly starts this evening. I hope to have it back on the road by this weekend. All in all I have about $700 in parts and machining in this rebuild. A replacement engine might have a been a bit cheaper but after shipping I think in the end it would have been more, plus I know the work going into this and how it was treated.

And, I like doing it.

I still need to get the two 5th gear nuts from Mazda to finish the trans after the reseal I did and do the final install of the 5th gear cover. then it all goes back in.

Dik
 
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As it sits on the way back together. The bottom end is buttoned up but the head is just hand tight, I need to find a deep 13MM 12 point. Mine is too short to torque the head studs.

Dik
 
I got the engine in on the 31st and it would turn over but not fire. I could smell fuel and I verified spark, that left only one thing, the timing. I checked the manual once again and that is when I realized I did not put the cam sprockets on in the right location. I totally missed the diagram in the manual when I was putting them on. Needless to say, timing the engine once it has been fully assembled and installed in the car is doable but not ideal. 3 hours later and it fired right up on the first try. I have a few days and several heat cycles on it and no leaks. The reseal on the transmission was successful also, no more driveway drips.

Thanks for all the help and advice.

Dik
 
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