| Author | Message | ||
     Dktechguy112 |
This isn't about an 1125. Its about a polaris quad. I tried to post it up on a polaris forum, and i didn't get an answer. I am hoping that someone on here can help me out. I have a polaris outlaw 450 mxr, i had it bored out to a 540. It has a ktm engine in it, and i had my local ktm dealer do the bore, and they are very sharp guys. Anyway, as you can see from the pictures, it is leaking oil. I believe that the gaskets have failed. I don't have the time or skill to crack the engine and change out the gaskets. I tried to use jb weld, but as you can see from the pictures, it did not work. I bought some high temp rtv silicone instant gasket, it is good to 650 degrees F. My question is, what should is use to clean off the engine and prep the engine for the rtv silicone?   | ||
| Mls1 |
Looks like a cylinder base gasket. There are no bandaids, gotta pull the jug and put in a new gasket... Sorry | ||
| Chevycummins |
Might want to check the torque on the head bolts before you take it all apart. Might just be a little loose? I know I wouldn't be that lucky though. | ||
| Jules |
Clean it up as best you can (jetwash it), let it dry and then throw some talc around the area and then run the motor up to temperature a few times. You may be able to trace the leak to its source. | ||
| Ohsoslow |
the only problem with just sealing it up with RTV is you don't know if the oil is leaking back into coolant or other areas of the engine that it shouldn't be | ||
| Dktechguy112 |
I will re torque the heads, that is a good idea. Ohsoslow, If oil is leaking into the coolant, then wouldn't the coolant turn from green to brown? Jules, I am not familiar with jet wash, is that a cleaner? I talked to a someone that seemed knowledgeable, and he told me to clean the engine and then prep it with stater fluid, then put on the rtv. | ||
| Dannybuell |
If the retorque does not work, take it back to who did the work and have them put new base gaskets on? Do they stand behind their work? Any type of warranty? | ||
| Badlionsfan |
Jet wash= pressure washer or self serve coin op car wash. The oil isn't going into the coolant or anything yet cuz it's leaking out of harms way. Your out of sight out of mind repair could cause that issue. To be brutally honest, you have no business trying to fix this thing. Your save a few buck repair method is gonna cost a lot more later when someone has to undo your "work", fix any new problems your "repair" caused then finally fix the first issue. Put down the tubes of goo and step away from the engine. | ||
| Ohsoslow |
yes the coolant would change colors. i was saying that it COULD happen. | ||
| Dktechguy112 |
I talked to the guys that did the work, they said it would be $1000 to crack the cases plus the cost of the gaskets. It looks like the gasket on the bottom end failed also, and they never cracked open the bottom end. So i don't think it is their fault. What could cause the gasket on the bottom end to fail? I don't want to spend a $1000 dollars fixing the engine only to have the same thing happen again. Also, Do you guys think its ok to ride? I have been riding it with the failed gaskets for about 20-30 hours. Will it damage anything to ride it like this? I have been adding oil, but even though it looks like a lot of oil, i haven't had to add much. | ||
| Dannybuell |
Does the engine have adequate breathers to relieve the extra internal pressure you created when you super sized? | ||
| Boogiman1981 |
on my honda the bottom gaskets and top valve cover gaskets failed due to lack of breather capacity and some plugged oil return passages. hard to imagine that if they punched it they didnt have the jugs off the motor which would require replacing the base gasket?? | ||
| Jules |
What do they mean by "bottom end"? if they mean the base gasket then how'd they do a rebore without taking the block off? If they mean where the two engine cases mate together then that's just unlucky I guess. It's possible (as has been suggested) that you have too much crankcase pressure - but that's more likely to be as a result of badly fitted rings than the increase in bore size as the pressure would be on top of the pistons if it was sealing right..I'd question whether they aligned the splits in the rings properly.. If it's the split in the crankcase halves then yes it's OK to ride it like that and keep an eye on the oil level for a while, if it's the base gasket then it'll just get worse and potentially track until the waterjacket is compromised, if that leaks into the crankcase the first you know about it may well be when the mains let go.. not a good scenario. | ||
| Dannybuell |
Jules - "the pressure would be on top of the pistons if it was sealing" The piston movement displaces air in the crankcase and creates pressure. Wouldn't a 20% larger engine have to need a 20% greater breathing capacity? | ||
| Jules |
That's a good question, well made too LOL It is indeed accepted practise to increase the crankcase venting on higher performance motors,because bigger pistons will displace more air both above and below the rings so the crankcase pressure will fluctuate more. The biggest issue is normally blowby - but this could well be simply the increae in air displaced by the bigger pistons overwhelming the original crank vent. Thanks for the reminder Danny  (Message edited by Jules on September 20, 2010) |
