rear end gets hot....to hot to touch.....

[rubbinsracin]

I went to crawl under the rearend after we finished this week and we loaded it on the trailer and i went underneath the rearend to strap it down to the trailer (my dad normally does this) and i grabbed onto the backside of the quickchange where the gears go and i burnt my hand pretty good. after i yelped like a scared puppy my dad said, "you touched the pumpkin didnt you?" this is a newly rebuilt rearend for this year and have had no problems with it at all. but im guessing we have to much fluid in the darn thing after seeing this below. we always just dumped some in and called it good. never checked the fill plug, just figured the more the merrier i guess lol.

why would too much fluid cause excess heating?

if the fluid level is correct, is this type of heat normal after a 25 lap feature and 15 minute wait before we loaded it?

http://www.cmwraceparts.com/d/Winters-FAQ.pdf

of course tonight when i get home im going to open the fill plug and see how much pours out and ill report back.

[BTDT]

Pull the back plate and check the bearings for drag. I found the cover slightly twisted and it was putting the bearing in a bind. replaced the cover fixed the problem.

The way you can tell if it is the cover or the bearing pull the bearing out and check it. I ordered a bearing first and it was a mistake.

[scrub_fan]

the fill plug is over full if you look on the front side of the right axle you will see a plug a little below the fill/inspection plug this is the fill level

[zeke23z]

Only reason i can think to much fluid would cause heat is its not being tossed around as much,just sits as gears spin less fluid gets pulled up and then falls back down.Just a thought.

[Egoracing]

Also, to much oil could be aerating and the air is keeping it from covering the gears and cooling them.

[car23]

most rearends hold one gallon of oil. if u have too much my experience is it blows it out the breather. i fill mine through the breather tube so i know minr is not clogged. be sure to check your tube with the rearend hanging and be sure it isnt crimping some shut. try to check it with a temp gun and get an accurate temp. your seals will give up if its over 260 deg. at 180 deg u should be able to hold your hand on it for 3 sec before u have to pull it off. i would suggest dumping it and putting in a gall of amsoil. or a quality oil.

[rubbinsracin]

we checked the site plug and it was just at the fill line. Im guessing that the heat we were at was normal. we took the cover off and double checked all the bearings and such and they looked ok. it hasnt taken any hits or anything so im guessing were ok. as my dad said, i must just be a sissy. (not a nice word)(not a nice word)(not a nice word)(not a nice word) desk job anyways lol.

[joedoozer]

most rearends hold one gallon of oil. if u have too much my experience is it blows it out the breather. i fill mine through the breather tube so i know minr is not clogged. be sure to check your tube with the rearend hanging and be sure it isnt crimping some shut. try to check it with a temp gun and get an accurate temp. your seals will give up if its over 260 deg. at 180 deg u should be able to hold your hand on it for 3 sec before u have to pull it off. i would suggest dumping it and putting in a gall of amsoil. or a quality oil.

One Gallon? I hope you mean one quart.

[Greaseman]

We have ran 1 gallon in all of our rearends. Using one quart would eventually cause problems.

[talclipse]

We have ran 1 gallon in all of our rearends. Using one quart would eventually cause problems.

I'm betting "eventually" is more like after a heat race every gear and bearing would be a nice shade of blue. I believe winters and all most the other manufacturers recommend right at 2" below the inspection plug. Whenever I drain the fluid I just make sure to get out as much as I can and throw a gallon in it and its right. I think you drain out around a quart when changing gears though?

[Greaseman]

Yeah you drain around a quart out. We always pour what we drain out back in and after every season we drain it and put new fluid in. It will be just a touch shy of a gallon after we drain all the fluid out.

[Egoracing]

Actually, Tiger I think, put a quick change in a 300 lap race with 1 qt of synthetic oil in it and ran it like that a long time after only using 1qt of lube in the whole rearend.

[car23]

i set up diffs for arca racing and about every other thing there is. i have set up reducers with ring gears in the 3 ft range. i know the winters takes 1 gallon of oil and by my own experience u dont loose a quart everytime u change your gears in your quick change. i used to just put a quart in instead of putting the oil that came out back in because of contamination at the track. thats how i found out that i kept adding a little bit too much and finally it blew out the vent. u can check the pinion area with a temp gun and then check the bell area to possibly see maybe
where your heat is coming from. i have fixed a number of quick changes over the years. i just replaced the ring & pinion in one 3 months ago and richmond gear is the only manufacturer of this gear. u can pull your axles out and take your drive shaft out and turn the pinion by hand and see if everything seems to be smooth turning or a little rough. trust me and replace bearings before u tear up a lot more. the pion bearing is a pain to deal with but there is no shimming to adjust ring and pinion the gears are made to correct specs if u need any assistance just give me call greg 864 378 3564

[Egoracing]

the pion bearing is a pain to deal with but there is no shimming to adjust ring and pinion the gears are made to correct specs if u need any assistance just give me call greg 864 378 3564

That is not correct, you shim the spool to set the play on the ring and pinion. The shims go between the bearing and the spool and move the whole spool side to side. If you have not been using them then you have been setting them up incorrectly. Look at page 7 in the winters closed tube rearends section and the shims are item #10. Page 114 has the information on how to set the ring and pinion.

Page 120 plainly says to much oil will cause it to overheat and it shows the correct level to fill the rear to. The ONLY time I have seen them blow oil out of the breather is when to small of a hose was used for the breather or no breather tank was used to catch the oil.

[AmickRacing]

I've never taken the temp of my rear end before, but I know it gets pretty warm. After a heat race and before a main, when you grab the old gears out you better be quick because it'll hurt if you're not. Never really smells like burnt oil though (when all is well anyway).

For the most part we don't change gears at the track, so when we do it in the shop we just add what comes out. But we carry some pint containers so we can dump one in after a change at the track. Never measured how much oil ours holds, just add it via the sight hole to the proper level from a 5 gallon bucket.

We've always used 80-90, heard of some people using old engine oil, or some other kinda fluid. Can't say I've seen many rearends die due to improper oiling, guess crash's must take them out more.