Slipping liner - how long?

discostew

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Sep 14, 2010
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Northern Illinois
so you took the engine out of a jeep one time and now your an expert.

Well that and.... having spent 30+ years as a golf course superintendent doing repairs, including in the field, of JD, Toro, Jacobsen, and other brands to numerous to name, fairway units, greens tri-plexes, walking greens mowers, sprayers, utility vehicles, blah, blah, blah. For fun try climbing under a fairway unit that has blown a hydraulic hose with fluid everywhere, with the hose woven through every nook and cranny, in 95 degree and 60% humidity weather. Or climbing into a hole where a 4" line (that carries 400+ gpm at 125 psi) that tees into a 3" line one way, and a 2" line the other way, and get it all cut apart and reglued in a time frame that allows for irrigation the following night.
You don't have tow straps on the golf course?
 

DiscoHasBeen

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Aug 7, 2016
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Indy
Oh Liners slip in Disco's. But not usually in GEMS engines. They do all the time in the one your wife bought behind your back. So back to your uncle's cock farm. I'm still trying to figure out what went wrong with you.

But you said they didn't. Oh wait it was only DII's. Shit, I mean Bosh engines.
 

discostew

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Sep 14, 2010
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Yep thats what I said. This is a rare thing but yes it does appear that these three slipped. But the only reason I believe these pics are real is because of who posted them. You don't know what blocks those are pictures. But see these guys would be considered a normally reliable source.

But hey, this is how you learn. Maybe someday you will fugure out that nobody wants to hear about your junk.
 

DiscoHasBeen

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Aug 7, 2016
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Indy
I got this wild idea. Why don't you ignore my post and I will continue to ignore yours, and we'll spare the people here at Discoweb the stupid back and forth.
 

discostew

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Sep 14, 2010
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We're probably going to need counciling or something, but I think it will work out. You get rid of that shitty Colorado pickup truck and get another Suzuki and stop pulling your junk out in front of the children....and a few other things
 

rover rob

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Mar 29, 2016
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upstate NY
Ive never heard of a GEMS engine doing this until I removed the head of the one in the picture, so Id guess not common. Would be interesting to compare block serial #s. Id bet LSEs were all built at the same time to minimize having to keep chrome crap in inventory, so they’d likely pull engines in a small range of serial #. Someone probably f’d up in the manufacturing process around that time
by the numbers posted those 3 are in a 1700 range, kinda funny back in 97 early 98 I worked for a company that crushed cars. we had land rover Framingham ma approach our boss and he had me use a excavator to crush around 150 engines while the rep from rover watched to make sure they were destroyed. the boss said something about casting errors. I didn't care back then as I was driving a 67 chevelle and didn't have any interest.
 

DiscoHasBeen

Well-known member
Aug 7, 2016
1,171
262
Indy
so you took the engine out of a jeep one time and now your an expert.

Well that and.... having spent 30+ years as a golf course superintendent doing repairs, including in the field, of JD, Toro, Jacobsen, and other brands to numerous to name, fairway units, greens tri-plexes, walking greens mowers, sprayers, utility vehicles, blah, blah, blah. For fun try climbing under a fairway unit that has blown a hydraulic hose with fluid everywhere, with the hose woven through every nook and cranny, in 95 degree and 60% humidity weather. Or climbing into a hole where a 4" line (that carries 400+ gpm at 125 psi) that tees into a 3" line one way, and a 2" line the other way, and get it all cut apart and reglued in a time frame that allows for irrigation the following night.

And this, almost forgot about this. Sad as these were some of the best days with the kid. Pit crew...100_0456.JPG
 

robertf

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Jan 22, 2006
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Who did that for you? I'm about to start building a high compression 4.6. After seeing this stuff maybe that would be a good start.

you might want to think twice about the high compression stuff. I built one with a 4.6 rotating assembly, 4.0 pistons. Its a beast. Its destroyed a few R380s. It also does not tolerate anything less than the highest octane you can buy. Knocks sensors can only do so much, eventually the physics dictate that low octane is going to detonate regardless of what the spark plug is doing.

I havent' taken this truck on too many trips, but it has has been a problem on trips in Oklahoma and in Michigan. You can't relax and enjoy being in the middle of nowhere while listening to a rock tumbler.

A detune with the correct 4.6 pistons is in that engines future.
 

discostew

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Sep 14, 2010
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Northern Illinois
That's something to think about for sure. Did you ever do a compression test on that engine? I'd like to know what kind of pressure is in there. I've always felt like everyone kind of guestimates what the actual compression ratio ends up being. I know octane boosters get expensive if it's a daily driver but this thing won't be one of those.

Actual octane levels of fuel kind of get messed up with ethanol added into it. Alcohol has an effect kind of like octane because it lowers combustion chamber temp because it has less BTU's. I know some would think that alcohol would burn hotter faster, but it doesn't. As proof I would bring up how fuel trim goes super lean when someone puts E85 in a car not designed to run it. Octane is an additive used to slow the burn, so you kind of end up doing something similar to the fuel when you add ethanol and or octane.

If you can buy premium grade fuel with no ethanol in your area you might want to try mixing a half tank of that with some high octane 10% ethanol stuff. I say that because the high octane alchohol free fuel wont be able to skimp on the actual octane like they could with the ethanol in it. If they can just test for the burn speed when rating fuel octane level then that's what the fuel manufacturers will do. They don't mind fucking us.
 
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robertf

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Jan 22, 2006
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I don't remember the exact #, but compression test was over 200psi. I'm afraid to retest it now, probably a lot lower since the pinging sessions

You can't correlate compression ratio directly from compression test without knowing temps and humidity and stuff. Its a complicated polytropic process that I haven't thought about since college

the stuff was ethanol free. Ethanol would have for sure helped, since the lower combustion temp may have taken it out of the detonation range alone even without raising the octane.