250 Big Red Crank Bearing... NEED HELP BAD!!

[matt drover]

There is 4 bearings for the 250 Big Red crank assembly.2 of them go on the crank cases, 1 on the crank and the other is on the right crank case cover. I got all bearings except the one that goes on the right crank case. Its a NTN bearing 36mm(bore)76mm(od)17.5mm(width).The problem is i cant find that bearing . Honda blue prints show that their is two bearings on the right side and they apear to be the same size when their actaully not. The one on the far right is the one that goes on the right crank case cover wich is a much smaller bearing. So I ordered the bearing and Honda sent me the one that goes on the left crank case.The meaursurments for that bearing are 32x76x17.5 the only difference is the inner diameter. So im stuck NTN does not list that bearing.I know i could get a machine shop to machine the crank so it fits the left bearing but then it wont fit over the timeing chain-oil pump sprocket. The Honda blue prints shows that their is two different right side cranks you can get(one is discountinued) I wonder if the crank you can actually get will accept the left bearing. Then i would have to get a new chain sproket which has a different number of teeth than the one i got now. So i dont know what to do this bearing is not a common bearing and I have exhausted all of my resourceses. I dont want to order the other crank unless i know it will all work,would the sproket with different number of teeth screw everything up,would the new sprocket work with the oil pump.my engine serial number is TEO4E-5126246.The serial number means alot if you look at the Honda parts blue prints. If any body can help it would be greatly apreatiated.

[Thorpe]

Cutter Sales Inc. 8844 Zealand Avenue North, Brooklyn Park, MN - (763) 425-8696

Give these guys a call, maybe they can help...

[tri again]

very few vehicle manufacturers make their own bearings

call any redneck bearing supplier and give them the dimensions.

We used to do that with bmw and mercedes gearboxes
FAMOUS for changing part numbers so the could charge Tons $$$

They'd even change part number year to year for the SAME part .

so they could charge more.

same part for an 89 was 12$ and the same part for a 2001 was 99$

Lots of bearings we used were under 10 bucks but 100 at the dealer.

Major manufacturers like skf and timken, sealed or shielded or whatever

[Dirtcrasher]

A bearing is a bearing........

Honda leaves a little more clearance one one side of the case so it will go back together without damaging the bearing. Thats why often one stays in, and the other stays on the crank.

IDK what your situation is, but it's usually the side case OD thats a hair larger on one side - on a 250R, it's the right side. Maybe they do it the same way for all of them?? I'm not sure.

There are VERY few bearings that you cannot buy yourself from a bearing/gear shop. They cannot have the same part number if the size is different. Sounds like there are 2 different bearings and you have 2 of the same.............

[matt drover]

Both bearing stayed in the case but one was easier to get out than the other. and yeah there are 2 different bearings the only difference is the bore. The left bearing bore is 32mm and the right is 36. The only bearing available is the bearing with the 32mm bore.Thats what Honda sends me for the right bearing. I noticed that their is two different right cranks you can get depending on the serial number of the engine and only one of them is avaialible.The one that is avaiable is beyond the sugested ser # of the engine.I can order the different right crank But then id have to change the cam chain-oil pump sprocket because the bearing with the 32mm bore wont fit over it. So i can do that but if it dont work it would be a expensive mistake.Plus id have to change the sprocket on the oil pump itself,wich is another $60.Then more than likely the timing chain wich dont realy mater cause im getting a new one any ways. So prety much the easy way to do this is to find that bearing.I tried my redneck bearing suplier and they cant find it as soon as he looked at the numbers on the side he said this is goind to be hard.I agree with ya dr joe they frig around with ya any way they can to make more money.So im going to try cutter sales and hope they can help.
Thanks guys.

[Dirtcrasher]

^ Just being honest. I have not found ONE BEARING in about 18yrs. of ordering parts albeit an industrial German machine and or trike/bike/quad etc etc etc that I could not get elsewhere than OEM. That includes a Detroit Diesel blower moptor shaft bearing which was a really odd size.

Some times the #s don't help these guys. Recently I needed a bearing which I think was a 5908 2RS and the bearing guy couldn't find anything that made sense to him. I gave him ID OD and width but he still had some digging to do. I highly doubt it is unobtainable from somewhere, you just need someone to be willing to take some time and help you.

If they stayed on the crank, you will need the bearing removal tool. I forget what the actually call it, but you HAVE to have it or ruin the bearing/crank and I have a small one and a large one. You may be able to rent it at Autozone for free, you pay for it and then they refund you. (I can post pics if need be) Pressing them back on, freeze the crank overnight and warm the bearings to 175degrees or so, I'd be afraid to go any higher and melt the rubber seals but I bet they could take more heat. Only press on the inner race if it's going on a shaft, or the outer if it's going in a housing/case.

I needed a gear once, I just shipped the bearing guy the guy and I knew once it was on his desk, it would be easier to get him moving.............

I'll have to look back at your post and get the ID/OD/W - I think you posted them............... Then I can do some digging. One time Honda needed 10 days to get a very odd 87 200X tranny bearing and my bearing guy got it to me in a few days, worked out great! Fafnir, SFK, NACHI - All good bearings. If they say China, RUN FOREST RUN!!!!!!!!!!!!!!! :lol:

[matt drover]

Are chinese bearings that bad.I looked into the ntn,nachi,skf and other bearing sits looking at measurments no luck. Then i typed 36x76x17.5 crank bearing on google and it brought me to a chinese atv dealer site called kazooma. They got the bearing but i think they dont ship to canada. So if you can find a place that would be good. When i told the bearing guy the # on the bearing he said it was manufactured specifacly for honda and when he looks it up it dont show.So all i go by now is the size. good advice for removal in instalation.I was going to do the oven trick but i dont think the gf would like that,does it actualy stink that bad even if you got the crank cases cleaned up really good.So i went to a bike shop and asked if they had a oven and they looked at me like i was a idiot.Plus i told them thats what the manual said to do.They got the bearings out with a slide hammer and put the bearings back in with a hammer and some type of bearing tool.It looked sketchy to me but it worked.Id rater go with the oven method seems like a safer way to do it plus i can do it my self. So if it dont stink up the house il use the oven for the remaining bearings left to install

[cattle-dog]

if they wont ship to canada have it shipped to me i will then ship it to you if that is your last resort. Cattle-dog

[matt drover]

I might actually do that il get back to u on that. Thanks