oil cooler

[kingman14]

i'm trying to figure out a way to use the oil injection pump to pump the tranny oil through a oil cooler radiator. and ideas? i know it's worth the trouble cause the 4 strokers put oil coolers on and it makes i'm run harder, and last longer since the cooler your oil is the cooler your engine is and the cooler your engine runs the longer it'll last and the tranny picks up alot of heat from the cylinder so i'm 100% sure that this will help.
anyway add your thoughs and ideas. praises and negatives cause either way i'm going to do this and see how it works out

 

[TopTechKid27]

not to rag on you or any thing but the only reason 4 stroke bikes have oil coolers is due to the fact that the tranny oil is also the crank case oil, so it comes in direct contact with the engine components causing the oil to get hotter then a 2 strokes tranny oil. IMO you could try and put a tranny cooler on a 2 stroke but it would be ATON of work for something that really wont help.

 

[Blasterdude27]

not to rag on you or any thing but the only reason 4 stroke bikes have oil coolers is due to the fact that the tranny oil is also the crank case oil, so it comes in direct contact with the engine components causing the oil to get hotter then a 2 strokes tranny oil. IMO you could try and put a tranny cooler on a 2 stroke but it would be ATON of work for something that really wont help.

Exactly.
It helps a 4stroke becuase the oil lubes everything ( basiclly the 2stroke equivalent to pre-mix ) and so cooler oil= better perfomance. But on a 2stroke the gearbox oil stays there.. in the gearbox all it does is keep the gears and clutch lubed.

 

[kingman14]

not being mean but i'm a mechanic i know how engines work.
but 2 stroke tranny's still gather ALOT of heat and as said anyway to help cool a engine is a plaus... and i've already got the crap laying around to do it so i'm going to try

 

[98blaster+4]

now it does ound like a good idea but there are two BIG reasons the oil injection system is deleted.
1-the pump fails and you run without lube in your cylinder.
2-the gear that is in the trans case is made of cheapo PLASTIC and when it fails (oh it will fail,trust me) it will disintegrate into many small sharp pieces that can shred your crank seal ,thus creating a vacuum effect into your cylinder which burns up your trans lube. in a short time it can also fry your top end and your gearsets,. clutch, and crank.

just do like everybody else and change the oil in your trans case every other ride or so...just my 2 cents

 

[TopTechKid27]

im also a mechanic so i see why you would want to play around with doing it. the main thing that i forgot to mention is i dont know if you know or not but the stock oil pump on it is a low volume pump (puts out about 10oz or so to one tank of gas) and for it to really cool the oil you really need a high volume put. i can see how it could work but i guess the reason no one has done it is because very few people have ever burned up a tranny because the oil got hot. im not tryin to be mean or discredit you, when you do do it let me know how it works id like to know if you can get it to work and how good it does.

 

[lasxgames]

let me know if it works, racing we have allot of heat issue with clutch life. **

 

[Wildcard2]

I must say it is a very innovative thought. But, regaurdless of the pump burning up or not I seriously doubt the pump will push enough volume to do much cooling. You'd need to move much more oil than that pump is capable of to do any good.

 

[kingman14]

i have whought about the oil pump issue and i've got a old one took apart to see if there is a way to improve it. if not i'll be using a small electric pump that will run off the lighting coil. if it works and works good i may sell kits to do this. and as lasxgames said... the clutch life is one of the things i'm looking to improve and i'll be adding a tranny fluid filter with magnet in the line going to the radiator to take care of all the metal dust and worn fibers from the clutch.
just asking this as a simple question but do yall think anyone would pay for this if it's proven to work?

 

[doc_speeder]

I think it's a cool idea, but I wouldn't buy it. Here's why:

1. I'm mostly a trail rider and I get pretty good life out of my clutches
2. It would add weight
3. It would add complexity
4. It's more stuff to get in the way of other servicing/fixing/maintenance
5. It's another potential item to break, leak, etc. Not cool when I'm 25 kms from the truck back in the mountains.

I change my trans oil every 6-8 hours, and honestly it doesn't look a whole bunch different coming out than when it goes in.

I suspect that other riders that mostly ride similarly would feel the same way.

For someone that is a hard-core racer, it might be worth it though.

 

[Tim Lutz]

The gear lube in a blaster never gets hot enough to need cooling unless your clutches are slipping badly.

The reason the oil in a 4 stroke bike gets so hot is because it is removing 20-30% of combustion heat through oil that is slung from the rod big end side clearance up on to the cylinders walls and the bottom of the piston.

 

[kingman14]

ok keep thinking that the oil doesn't get that hot in a air cooled 2 stroke.

 

[Blasterdude27]

ok keep thinking that the oil doesn't get that hot in a air cooled 2 stroke.

Its just as hot in a liquid cooled one too..

 

[kingman14]

nope... it's about 10-15 degree's hotter.
but anyway as said i'm still working on it...

 

[doc_speeder]

A good start would be to get an actual measurment of the oil temperature. Until you do that, you're just working from some far from unanimous assumptions.

 

[kingman14]

i'm getting there haha.it's been raining really hard here and i've not been able to get to town to buy some oil. my blaster is past due on a changing. as soon as i get the oil changed i'm going to ride it for 20-30 min and check temps and see what i'm working with.

 

[Knowpig]

not to rag on you or any thing but the only reason 4 stroke bikes have oil coolers is due to the fact that the tranny oil is also the crank case oil, so it comes in direct contact with the engine components causing the oil to get hotter then a 2 strokes tranny oil. IMO you could try and put a tranny cooler on a 2 stroke but it would be ATON of work for something that really wont help.

Not to rag on you or anything, but the 04/05 Honda TRX450R has separate oil for the trans and engine. And only the engine oil flows through the oil cooler on that bike.
You will only need a tranny cooler if you are burning the fluid, and that take quite a bit of heat. If you are seeing that much heat, you need to look into a new clutch and some stiffer springs.

 

[Tim Lutz]

I just don't see the need to cool oil that is not going to get close to hot enough to breakdown. If you can get your Blasters gear lube up to 250 degrees them you have other problems. Yes the Blaster doesn’t hold a lot of oil to begin with and requires frequent changes but this is because of debris from the clutches and water condensation. You just don't ever see clutch, gear or bearing failure do to heat in ANY 2 stroke gearbox. (I’m sure it HAS happened in 1000 mile desert races or something like that) If you are worried about it use a good synthetic ATF. They are good to 300 degrees.

 

[1252smoke]

I could not agree more with Tim. There is not enough heat being produced to go through all that trouble. If it was a issue the factory or the aftermarket would have addressed it long ago. Even on car and truck manual trans. Use atf without any cooling, heat and internal rpm is grater and sustained for longer durations than the average atv will ever see.