Honda Cr 400

Greenbush
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Greenbush
Edited Date/Time 1/19/2022 9:25am
Saw this in Facebook.
I’ve never heard of such a thing
Anybody have any experience with one of these? Seems pretty cool!
Curious about power delivery. Would think it’d be pretty torquey.
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user760a
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user760a 7/8/2020 7:32am
7/8/2020 7:32am
interesting frankenstein machine. I wonder how much work was required to mate the fuji (polaris) cylinder to the honda lower end
user760a
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user760a 7/8/2020 7:36am
7/8/2020 7:36am
I was wondering what the actual displacement would be, thinking the CR would have a considerably shorter stroke, but it doesn't. it is actually 2mm longer than polaris 400 (which is actually 387cc)
Falcon
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Falcon 7/8/2020 8:35am
7/8/2020 8:35am
Blink
Can't decide if the Honda parts make the Polaris ones more reliable, or if the Polaris parts make the Honda ones less so. Either way, I'm not sure I trust the Frankenwelded swingarm. Those hillclimb guys are a whole other breed. Gotta love it.
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rohleder644
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rohleder644 7/8/2020 8:47am
7/8/2020 8:47am
At least they started with one of the most hated chassis of all time
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The Shop

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FGR01
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FGR01 7/8/2020 9:27am
7/8/2020 9:27am
user760a wrote:
interesting frankenstein machine. I wonder how much work was required to mate the fuji (polaris) cylinder to the honda lower end
Let's just say, it doesn't appear to be exactly what you'd call a matched port job, LOL.

As for the swingarm, come on man, that brake hose is super confidence inspiring.....

It does have a pretty sweet works tank.





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FWYT
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FWYT 7/8/2020 10:21am
7/8/2020 10:21am
Wut . . . .

Chassis aside, is there any merit to that motor combo idea?
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user760a
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user760a 7/8/2020 10:51am
7/8/2020 10:51am
mo power
Wandell
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Wandell 7/8/2020 11:15am
7/8/2020 11:15am
Hillclimb guys are different! At least they didn't destroy a usable chassis. That seat looks like something off a 1970's custom chopper build!
Dirty Points 7/8/2020 11:24am
7/8/2020 11:24am Edited Date/Time 7/8/2020 11:44am
FWYT wrote:
Wut . . . .

Chassis aside, is there any merit to that motor combo idea?
Google says its a combo that is not completely uncommon to do for guys with TRXs
5
user760a
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user760a 7/8/2020 12:30pm
7/8/2020 12:30pm
If it were mine, I would scrub all mention of polaris. As far as I know it is a japanese made Fuji cylinder....
2
Dirty Points 7/8/2020 1:16pm
7/8/2020 1:16pm
user760a wrote:
I was wondering what the actual displacement would be, thinking the CR would have a considerably shorter stroke, but it doesn't. it is actually 2mm longer...
I was wondering what the actual displacement would be, thinking the CR would have a considerably shorter stroke, but it doesn't. it is actually 2mm longer than polaris 400 (which is actually 387cc)
My math says 389 cc (The Polaris is actually 378 cc).
1
Moto Mofo
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Moto Mofo 7/8/2020 7:15pm
7/8/2020 7:15pm
I’d rather read an article about Keefer testing this thing, than the Star bike.
5
Pool-eh
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Pool-eh 7/8/2020 7:37pm
7/8/2020 7:37pm
motoarmageddon wrote:
MXA should test it
I’ll save you time. “The gap between second and third was too big (based on the only track we test bikes at that is filled with short runs to steep hills) For what we would like so add 1 tooth to the rear sprocket”...”add 10cc to each fork and go down one spring rate(regardless of anything)”
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omalley
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omalley 7/8/2020 7:53pm
7/8/2020 7:53pm
motoarmageddon wrote:
MXA should test it
Pool-eh wrote:
I’ll save you time. “The gap between second and third was too big (based on the only track we test bikes at that is filled with...
I’ll save you time. “The gap between second and third was too big (based on the only track we test bikes at that is filled with short runs to steep hills) For what we would like so add 1 tooth to the rear sprocket”...”add 10cc to each fork and go down one spring rate(regardless of anything)”
You forgot “for hardcore racing “...
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CR250Rider
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CR250Rider 7/14/2020 9:26am
7/14/2020 9:26am
MXA would add a tooth regardless
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fatcat8732
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fatcat8732 3/7/2021 3:33pm
3/7/2021 3:33pm
user760a wrote:
interesting frankenstein machine. I wonder how much work was required to mate the fuji (polaris) cylinder to the honda lower end
i am the new owner of this bike and it is an absolute animal. one of the torquest machines ive ever ridden.
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yzf162
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yzf162 3/9/2021 6:41am
3/9/2021 6:41am
fatcat8732 wrote:
i am the new owner of this bike and it is an absolute animal. one of the torquest machines ive ever ridden.
Don't be shy child tell us more about this bike.
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Skerby
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Skerby 3/9/2021 7:30am
3/9/2021 7:30am
user760a wrote:
interesting frankenstein machine. I wonder how much work was required to mate the fuji (polaris) cylinder to the honda lower end
fatcat8732 wrote:
i am the new owner of this bike and it is an absolute animal. one of the torquest machines ive ever ridden.
How did you find this thread?
fatcat8732
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fatcat8732 3/9/2021 1:02pm
3/9/2021 1:02pm
user760a wrote:
interesting frankenstein machine. I wonder how much work was required to mate the fuji (polaris) cylinder to the honda lower end
fatcat8732 wrote:
i am the new owner of this bike and it is an absolute animal. one of the torquest machines ive ever ridden.
Skerby wrote:
How did you find this thread?
i was looking online for more info on the cr250 polaris 400 engine mashups and found this thread with the pic of builders orginal listing
1
fatcat8732
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fatcat8732 3/9/2021 1:03pm
3/9/2021 1:03pm
fatcat8732 wrote:
i am the new owner of this bike and it is an absolute animal. one of the torquest machines ive ever ridden.
yzf162 wrote:
Don't be shy child tell us more about this bike.
wat would u like to know?
1
usp4u
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usp4u 3/9/2021 1:15pm
3/9/2021 1:15pm Edited Date/Time 3/9/2021 1:18pm
Quad guys used to do that back in the mid 90's with 250Rs. I remember seeing a few when I played in that world. Particularly in GNCC.
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clappedoutpolondaintheworks 1/18/2022 4:31pm
1/18/2022 4:31pm Edited Date/Time 1/18/2022 4:34pm
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a long time. I plan on trying to get it running off of the 400 topend.. bottom end might need help but I'm not 100% sure what's all down there. If it's all stock or not. The last guy fucked it up changed the seat and put a regular one on it might be a Crf80 seat not sure. I identified this bike from the footpegs and black upper Shock tube clamps. If anyone knows a little about it anything would help it looks like it's been threw a few people's hands. Thanks in advance ill get some pictures here soon
2
Greenbush
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Greenbush 1/19/2022 6:58am
1/19/2022 6:58am
clappedoutpolondaintheworks wrote:
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a...
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a long time. I plan on trying to get it running off of the 400 topend.. bottom end might need help but I'm not 100% sure what's all down there. If it's all stock or not. The last guy fucked it up changed the seat and put a regular one on it might be a Crf80 seat not sure. I identified this bike from the footpegs and black upper Shock tube clamps. If anyone knows a little about it anything would help it looks like it's been threw a few people's hands. Thanks in advance ill get some pictures here soon
Wow, congratulations
Definitely keep us updated. Can’t wait to see the finished product.
2
vansnxtweek489 1/19/2022 7:39am
1/19/2022 7:39am
Make sure you keep the Husky bar pad on there, it completes it.
1
sgthubbard#60
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sgthubbard#60 1/19/2022 9:25am
1/19/2022 9:25am
Be a sweet bike to save and clean up properly. Looks like a well made alloy fuel tank on there.
FGR01
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FGR01 1/20/2022 9:52am
1/20/2022 9:52am
clappedoutpolondaintheworks wrote:
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a...
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a long time. I plan on trying to get it running off of the 400 topend.. bottom end might need help but I'm not 100% sure what's all down there. If it's all stock or not. The last guy fucked it up changed the seat and put a regular one on it might be a Crf80 seat not sure. I identified this bike from the footpegs and black upper Shock tube clamps. If anyone knows a little about it anything would help it looks like it's been threw a few people's hands. Thanks in advance ill get some pictures here soon
How did you find this thread?

enketchum
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enketchum 1/20/2022 9:55am
1/20/2022 9:55am
Polonda, is that Kip's gf
2
clappedoutpolondaintheworks 1/24/2022 9:47am
1/24/2022 9:47am
clappedoutpolondaintheworks wrote:
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a...
I am currently the new owner of this bike and she's hurt.... Some dude had it outside in real cold weather. Hasn't been washed in a long time. I plan on trying to get it running off of the 400 topend.. bottom end might need help but I'm not 100% sure what's all down there. If it's all stock or not. The last guy fucked it up changed the seat and put a regular one on it might be a Crf80 seat not sure. I identified this bike from the footpegs and black upper Shock tube clamps. If anyone knows a little about it anything would help it looks like it's been threw a few people's hands. Thanks in advance ill get some pictures here soon
FGR01 wrote:
How did you find this thread?

Scrolled internet alot using key words like polonda or cr400

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