Atc 250r motor

Atc 250r motor DEFAULT
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  1. 09-22-2007, 11:20 AM#1
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    81-84 atc 250r motor question?

    does anybody know if a 81-82 atc 250r motor will fit a 83 250r? Or will just the bottom end work.

    my buddy just got a 83 with no fifth gear. i found a couple deals on 82 motors on ebay.

    thank
    JASON LISKEY

    1985 atc 250r ---- finsh line axle,.fmf exhaust and rictor privateer silencer, prm grab bar.
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    01 400ex --- with 86 trx 250r motor
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  2. 09-22-2007, 11:32 AM#2
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    Quote Originally Posted by jason85atc250rView Post
    does anybody know if a 81-82 atc 250r motor will fit a 83 250r? Or will just the bottom end work.

    my buddy just got a 83 with no fifth gear. i found a couple deals on 82 motors on ebay.

    thank
    You will have to use the shifter shaft from your 83-84 other than that it will work...

  3. 09-23-2009, 01:16 PM#3
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    Yes it will fit like a glove. 81-84 are the same except the drive+suspension.

  4. 09-23-2009, 02:01 PM#4
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    I have a 83-84 motor in my 82 250r. The only thing you notice from the out side is the later ones are black and not red. I beleive the 83-84's have bigger porting.

  5. 09-23-2009, 08:04 PM#5
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    Great news!! They've been waiting 2 years for this info
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  6. 09-23-2009, 08:09 PM#6
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  7. 09-24-2009, 03:55 PM#7
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    Talking


  8. 09-24-2009, 03:57 PM#8
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    I need to talk to someone who has built a 1984 250R. I had to do so much research just to figure out that my front forks are from a 85'. The bike is a 1982. ??

  9. 09-24-2009, 04:01 PM#9
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    They need to remanufacture some DG COOL heads for the old school trikes!!
    Can't they just make a mold or something?

  10. 09-24-2009, 04:03 PM#10
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    you could have to make a cast, the problem is you have to get a few in on it, and when I say few I mean around 50 units. I have looked into doing it through my own company and its going to be pretty expensive to do...
    86 ATC 500R the duner..
    85 ATC 500R...the not quite finished faster duner
    1985 ATC 250R Bone stock!!
    1985 ATC250R mx/duner
    1986 TRX370R MX/Duner
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  11. 09-24-2009, 04:03 PM#11
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    shortline10's I can tell that you ride your trike because your suspension in the rear is low for better control. Low in the back high in the front. I think the 86' R is too tall.

  12. 09-24-2009, 04:06 PM#12
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    TRUE. Damn I love those things. I would probably buy a trike just because it's on there!!

  13. 09-24-2009, 04:07 PM#13
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    I heard In the grapevine that HONDA used to have a water cooled head for the 81-84 250R's. That would be nice.

  14. 09-24-2009, 06:27 PM#14
    Quote Originally Posted by trikeroosterView Post
    I heard In the grapevine that HONDA used to have a water cooled head for the 81-84 250R's. That would be nice.
    Post a bunch of pics of your bike.I want to see it closer with the water cooled parts installed.Thanks

  15. 09-25-2009, 11:37 AM#15
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    Quote Originally Posted by mike from long islandView Post
    Post a bunch of pics of your bike.I want to see it closer with the water cooled parts installed.Thanks
    Am I missing something? He didn't say he had them, he said he heard that Honda once made some...

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3WHeeLeR WoRLD > The Goods > Trikesylvania > How to determine the year of manufacture of a 250R motor?


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View Full Version : How to determine the year of manufacture of a 250R motor?



BIGKAHUNA

01-06-2003, 12:17 PM

I recently purchased a motor for my 85/86 ATC250R project and the guy said the believes it is an87 or 88. How can I determine the exact year of the motors manufacture?


Howdy

01-06-2003, 03:12 PM

Get me the Serial Number and I will tell you.


ATC crazy

01-06-2003, 05:12 PM

All I have is that 1988 engine serial #'s were between TB06E8100014 and TB06E8109454. 1988 Frame serial #'s were between TE120JK200011 and TE120JK209449. That is the only year that I have found right now. I had a list for 1985-1989 ATC and TRX 250r's but cant find it now. Hope this helps :-P


skippy

01-06-2003, 06:05 PM

take a look thru the cylinder, in the port, is it split? or empty?


DixiePlowboy

01-06-2003, 09:37 PM

Skippy,
Are you talking about the intake port? I have one that's split and one that's not. What's the significance of the split?


BIGKAHUNA

01-15-2003, 01:38 PM

This is a picture of the motor I acquired. Won it in an Ebay auction. Is the serial supposed to be in the box below the shifter? Its got TBO6E- and then the box is empty? Is there anyway to tell the year of manufacture with this info?


ATC crazy

01-15-2003, 03:49 PM

The TB06E matches the beginning of the 1988 serial # that I posted earlier but I forgot if the different years start out differently than that?


Howdy

01-15-2003, 04:14 PM

This is from the Honda Identification Manual:

Here is the Serial Numbers for the years:
ATC250r 1985 - TB06E-2400001~
ATC250r 1986 - TB06E-2500001~
TRX250r 1986 - TE12E-1000001~
TRX250r 1987 - TE12E-8000001~
TRX250r 1988 - TE12E-8100001~
TRX250r 1989 - TE12E-8200001~


It looks to me you have a 85 or 86 atc250r motor. But with out the other numbers I can't tell.
Howdy


BIGKAHUNA

01-15-2003, 07:06 PM

Well as for parts&such that should be close enough huh? There wasnt any drastic changes until 89 huh? The guy I got the motor from guarantees the motor and tranny to be in good working condition although he was under the impression that it was either an 87 or 88. This was a back up motor and as has been completely gone through. You can plainly see the gaskets are new. I am gonna post a couple more pics of it just in case anyone is interested.


skippy

01-16-2003, 12:38 AM

87-89 had the split in it... as oppose to the no split, an open chamber... in the cylinder... 85-86 didnt they were wide open... didnt make too much difference, but just to identify, also i saw one of your bolts was snapped on the left case, surely get that fixed, so you dont lose a chain and lose the case, they can use old clutch basket and weld a tab on there, tap it out and you will have two case saver bolts then, its surely worth it.. just dont crank of those two bolts!


skippy

01-16-2003, 12:42 AM

also get yourself an 89 clutch update kit from service honda, part number 06220-hb9-305 $48.12, to update that for smoother action, get some new seals off ebay, and then you wont have any problems!


01-16-2003, 10:54 AM

In order to get a bike registered without a serial number on the engine case in California, we have to prove that it was purchased legally. Then the CHP will install a new serial number. Otherwise they think the engine is stolen.

Looks like you had a hot spot on the kicker side of the case, just below and in between the clutch oil filler cap and water pump.


ATC crazy

01-16-2003, 06:34 PM

Hey Howdy:

TRX250r 1986 - TE12E-1000001~
TRX250r 1987 - TE12E-8000001~
TRX250r 1988 - TE12E-8100001~
TRX250r 1989 - TE12E-8200001~


Aren't thoes Frame #'s, Not engine #'s


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How To Build an 85-89 250R Motor W/ Dave Moore - Part 3 - Top End

ATV Riders Forum > Sport ATV Model Information > Honda TRX 250R ATV Info > TRX250r with ATC250r motor????


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atownswhizkid

06-19-2006, 03:57 PM

what year motors of the atc 250r will bolt right in on the trx 250r?

I have seen some 1981-1982-and 1983 motors they look the same but i want to make sure it will fit before i buy it.

Also will the TRX250r cylinder fit on the ATC?


250R-Dee

06-19-2006, 04:14 PM

The chain on right side of the air coooled '81-'84 ATC 250R instead of the left side like on the '85-'86 ATC's and the TRX's so you will have to do some fab work to make the motor fit. '85-'86 ATC motors will fit with no problems whatsoever. One of the quads in my shop has an '86 ATC motor in it.


atownswhizkid

06-19-2006, 04:20 PM

So the atc250r 85-86 will bolt right in on the trx250r i have a 86 frame and it needs front motor mounts do they weld in or bolt on.


Brian112233

06-19-2006, 04:42 PM

the front mounts have tabs that are welded to the frame. there are two brakets that bolt to the motor then to the tabs on the frame. it has one bolt that goes through the motor and two to the tab on the frame here is a picture of the two brakets


Brian112233

06-19-2006, 04:43 PM

now if you look at the ver left of the pic you will see the two tabs that are on the frame, here is a pic of this


atownswhizkid

06-19-2006, 04:45 PM

How can i get them put on my frame?


deathman53

06-19-2006, 04:47 PM

85-89 250r motors are nearly identical, they all bolt in the same way, they can share cases, cranks, tranny's, and most types of top ends with each other. there are differences between all of them, but since all can share each others parts, the only way 20 years later to identifly them is if you know the history. I have long rods in short rod motors, in one 85 cases, I have a long rod and trx tranny, another is 86 atc cases, 88/89 tranny and long rod. I'm starting lose track of what motors I have are 85 crank, tranny cases, and so on for the other years I have.


Brian112233

06-19-2006, 04:52 PM

when you say can how can you get them put on your frame are you refering to the tabs on frame


atownswhizkid

06-19-2006, 04:59 PM

no on the frame there are no motor mounts like the tabs u showed n the pic. wen u said on the left.

and death man would you want to sell any of you motors or do you have a bottom end laying around which in good shape.


also so does this mean i cant use any of the atc's 81-84?


Brian112233

06-19-2006, 05:03 PM

you would have to have a welding shop or blacksmith, or a friend with a welder do some fabricating for you. hope that helps, let me know if you have more questions. also why would you want to use a 81-84 motor, they are air cooled, not liquid like the 85-89?


atownswhizkid

06-19-2006, 05:07 PM

I thought they would be the same when fixed up but i cant find a trx250r cheaper.

Does anyone know anybody who got a 250r bottom end?


Brian112233

06-19-2006, 05:13 PM

no, the 81-84 are not as good. stick with the 85-89, do you need complete bottom end, just cases, just gears, crank. watch ebay, you can find decent prices there, i have some parts let me know, i dont have complete bottom end but i have a complete forwheeler for sale as you know


atownswhizkid

06-19-2006, 05:14 PM

So how can i find some motor mounts to get welded in. do they only have tabs or do they sale the motors mount in the picture with the blue frame.

I need front motor mounts for the R frame.

here is a picture of 250r frame that needs front motor mount.


Brian112233

06-19-2006, 05:21 PM

do you know anyone who has 250r locally, if so take it to a welding shop and they can weld some mounts in for you. other than that you will have to custom make them off the pick, find someone to cut theres off for you, or just buy another frame. also what are looking to spend on a running motor, i have a buddy that owns a shop and i know he has a new motor, i can ask him what he wants and get back to you.


atownswhizkid

06-19-2006, 05:28 PM

I would spend no more than 500-600 on a motor shipped.

And let me know if anyone knows of someone who is doing a hybrid with a 250r and if they want to sell their stock motor mounts.


Brian112233

06-19-2006, 05:32 PM

you will have a hard time finding a good running motor for 500-600 shipped, i know there is one on here somewhere for 700, i will look and post if i can find. also i will ask my friend what he wants for his and keep an i out for mounts for you


Brian112233

06-19-2006, 05:39 PM

go to page two of the 250r info page and read the post looking 4 a motor, the forth post or so down is from A A R O N he has the motor for 700.


atownswhizkid

06-19-2006, 05:40 PM

Thanks i would really appreciate that and how much would you pay for a frame without front motor mounts.


Brian112233

06-19-2006, 05:44 PM

personally i wouldnt buy a frame with out mounts, to be honest im trying to get rid of all my r parts, im gonna strickly ride street for a while. but put it on ebay, it should sell


atownswhizkid

06-19-2006, 06:24 PM

could i use 85-86 atc motor mounts on a 86 trx250r frame


deathman53

06-19-2006, 06:50 PM

NO, completely different.


x.system

06-19-2006, 07:42 PM

Get yourself a motor and bolt it in using all the existing mounts. Get the front mounts that unbolt and then have a welding shop make what you need to take up the gap. Get a good pic of what they are suposed to look like to show them and you should be ok. They don't have to be exactly like oem as long as they are strong. 86 mounts are totally different from 87 to 89 so you have two styles to choose from. I could do it if you were not so far away but its not worth shipping the frame when you can find someone locally.


matt250r21

06-19-2006, 07:54 PM

Listen to x.system, he told you basicly the way I have done that in the past. Make your front motor mounts that will be welded to the frame out of 3/16 to 1/4 inch chromoly flat stock and have it TIG welded to your frame. Make sure everything is real clean (areas to be welded) and bolts up nice before welding.


atownswhizkid

06-19-2006, 08:06 PM

So i should get the motor then get those chrome mounts that are in the picture on the first page and have those welded in. Is that what you are saying.


matt250r21

06-19-2006, 08:23 PM

The chrome motor mounts in that picture do not get welded to the frame, they bolt the motor to the mounts you will have to get fabed up. The fabracated mounts get welded to the frame. The chrome mounts are the link between the motor and frame. They bolt in so the motor can be removed from the frame for service.


atownswhizkid

06-19-2006, 08:29 PM

so the only way i can get my motor to stay in the frame.


250R-Dee

06-20-2006, 01:17 AM

You will also need to find the rear motor mount bracket for an '86-'87 frame and the headstay mount before the front mount tabs can be welded to the frame.


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