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View Full Version : 1984 atc250r mugen big bore kit



octavio
11-27-2003, 03:28 AM
i have a 250r that is modified to hell and back it has a big bore kit but it needs resleeving and piston the cylinder says mugen any help is apriciated thank you

octavio
11-27-2003, 10:56 AM
i cant find anyone that has piston or sleeve the cylinder is chrome plated and some fell off and trashed the piston i might consider selling the bike anyone knoww were i can find any parts??

Trikeaholic
11-27-2003, 12:23 PM
wow, if it was me, I would take the top end to an engine machine shop and see what the guy says. I was asking about my Honda 300 kit, and he said wiseco will make any piston, just might cost you alot. I didnt think a 300 kit was worth all that money at the time, but Im going to keep it around for a rainy day.

Beer_Smurf
11-27-2003, 01:25 PM
You might try, LA Sleeve Company.

http://www.lasleeveco.com/

If not, where are you and how much do you want?

octavio
11-27-2003, 08:53 PM
the piston is about 83 mm ive tried evrywere the piston is a art piston

J.D.
11-27-2003, 09:39 PM
ART piston too? I had one in my Z, who makes them?

PLJ.
11-30-2003, 11:36 PM
Sudco Racing was the last one I have seen that had any Mugen ATC parts left for sale. Try there closeout website it has a few parts listed, I called them and spoke to one gentleman who said they had a lot of mismatched parts for the old Mugen motor kits, but this was over a year ago. Good luck.

plumber
12-01-2003, 10:03 PM
you may try a piston for the 350 oddesey piston my machinest thinks it will work?

MPNX2
12-01-2003, 10:07 PM
There is a piston and rings for the 300R Kit for the '83/84 250R on ebay right now here is the link...

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=43977&item=2446298658

crev
12-30-2015, 09:08 AM
I just found a web site that sells piston kits for the 81-84 hondaline 300r . the web site is racerstoystore.com They have 76mm through 78mm pistons

John Tice
12-30-2015, 09:44 AM
I can make & sleeve most any cylinder up to 4 ½” bore
Log on to my site & take a look

John Tice
503-593-2908 Alternate 541-508-3944
www.smallenginemachineworks.com & www.nwsleeve.com
Turning Custom Cylinder Sleeves Since 1971

Daddio
01-02-2016, 12:27 AM
The Mugen 360 cylinders are chrome plated. If the plating is bad, there are places that can replate them. Wiseco can make the pistons for them but I think they will only do 10 or more on a run, however they can also direct you to a guy that has them made and he sells them. My son went through all of this a few years back. It's sort of a hassle but it is possible to do.

Madman Racing
01-02-2016, 01:02 AM
It's well worth rebuilding. It's an awesome piece of trike history. I'd love to get my hands on one eventually.

manbearpig
01-02-2016, 09:19 AM
They're really neat. The big bore Mugen kit is 360cc and includes a stroked crank and machined cases to accept the large sleeve. its a package. whatever you do, if you dont rebuild it and lose interest, sell the whole motor together. bottom end, cylinder, crank, and head. dont sell the top end separately, its useless without the crank.

might want to get in contact with 88turbocoupe on a-i-r-f-o-o-l-e-r-s.com. last i heard he had some real big slugs from some rare air hammers

where are you located? i sold my Mugen 360 last year and have been pretty bummed ever since

sledcrazyinCT
01-02-2016, 10:26 AM
They're really neat....might want to get in contact with 88turbocoupe on a-i-r-f-o-o-l-e-r-s.com. last i heard he had some real big slugs from some rare air hammers

Turbocoupe has not logged in on AF in over a year. He did have some oem pistons for the 300 kits.

I believe WOSSNER will make as few as four pistons in a custom size

christph
01-02-2016, 04:27 PM
Yes, I called Wossner about 1 year ago and they said custom pistons require a minimum order of 4.

RIDE-RED 250r
01-02-2016, 09:07 PM
Not for nothin' but....Holy 12+ year old thread guys! LOL! :D

manbearpig
01-03-2016, 08:49 AM
Not for nothin' but....Holy 12+ year old thread guys! LOL! :D


HAH!! totally had me fooled

John Tice
01-05-2016, 12:33 AM
If you still have the original piston, it can probably be matched

Millennium Plating is the platers that we use, ask them for a quote

John Tice
503-593-2908 Alternate 541-508-3944
www.smallenginemachineworks.com & www.nwsleeve.com
Turning Custom Cylinder Sleeves Since 1971