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A blown head gasket will usually show itself as vapor at the exhaust.

John Deere 6x4 running hot
Utility Vehicles UTV/ATV
Replies 3 Post by Cheapsnake

"old shit gator" tells us nothing. 4x2, 6x4, AMT, gas, diesel? Stalling under load? Stalling on acceleration? Stalling at random? Happy to help, but need more info.

Stalling
Utility Vehicles UTV/ATV
Replies 2 Post by Cheapsnake

I scoured the case and heads for any passage that might provide a path for pressurized oil, but the only possible path I could find was openings in the heads alongside the tappets that would allow incidental oiling, but nothing pressurized. If that's the way these engines were designed I really can't argue, since they are very reliable and when they do break it's something other than the valve train. It just seems to be an iffy proposition. I know I've got good oil pressure. I packed the pump with vaseline and spun it over with a test light hooked up to the oil pressure sensor. It pressurized almost immediately and in fact, held pressure for several seconds after stopping.<br>
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I did a complete rebuild on the engine (rings, bearings, seals, gaskets, valve lapping, cylinder hone, milled heads, etc.) and I think the parts cost less than $200. Beyond that I had a pro do the machining and basic assembly, so I'm probably into it for around $475 plus the cost of the core.<br>
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I do think the Harbor Freight option is very valid. However, the reality with anything John Deere is that anything non-stock tends to bring the value down...even if it's an improvement over stock. I recently dropped a V8 into a Porsche 914. Made the car much more fun to drive, but dropped the value by at least 50%. Go figure. <br>
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BTW, I'm building this engine on spec and it's currently for sale on local Craigslist until Wednesday, then it goes to ebay if anybody is interested.

Rocker arm oiling on Kawasaki fd 620d Gator 6x4
Utility Vehicles UTV/ATV
Replies 4 Post by Cheapsnake

If you're leaking through a head gasket you should see water vapor in your exhaust, unless it's leaking directly into the sump, which would explain the high dipstick level. It's a long shot, but try retorquing your head bolts. I probably don't have to tell you that changing head gaskets is waaay easier than WP gaskets on these things so let's hope it's the former.

Water in oil
Utility Vehicles UTV/ATV
Replies 15 Post by Cheapsnake

I've got a full gasket set coming, not sure if it includes the CS seals, but worth a check. The engine didn't appear to be leaking at the seals, but after mucking around with it, who knows what I did to screw them up. Thanks for the tip on the head resurfacing. It shall be done.

6x4 engine rebuild vsHarbor Freight 22HP
Utility Vehicles UTV/ATV
Replies 10 Post by Cheapsnake

[QUOTE=dbergan;196334] I'm in the process of rebuilding the engine in my JD 2005 HPX Gator.It has the same engine and is not fuel injected.I doubt if this older 6x4 that you are looking at is fuel injected either.Talk to the folks at ATVWorks.com for parts and see if they can help you out 1-866-436-3478 [/QUOTE]

Thanks, I'll check them out.

6x4 engine rebuild
Utility Vehicles UTV/ATV
Replies 6 Post by Cheapsnake