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Author Topic: Doctor Funk, or, the strangest CT90 you've ever seen  (Read 1334 times)

Offline advCo

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Well, I picked this thing up tonight. Buying a CT90 was most certainly not on my list of things to do today, but alas...

Looks to me like it may have been raced at one point. Someone added all sorts of bits like an oil cooler, pit bike fender, and what looks like a Honda SS50 or S90 tank that is actually pretty clean inside. Most of the stuff is half assed (the tank is mounted with angle iron) but it looks kind of cool as is....well maybe not the headlight.

It has spark, compression is at 120. Carb is soaking tonight and I need to pick up a new can of carb cleaner but my guess is this thing will fire right up. This thing may end up being the little sister to the Van Van for trail running.

Here are some pics of the little monster.











"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline hillsy

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Re: Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #1 on: Jun 22, 2017, 02:28:25 »
I'd imagine you'd get a pretty decent range on that thing with two tanks.

Offline advCo

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  • Nick Ol' Eye
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Re: Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #2 on: Jun 22, 2017, 02:30:37 »
I'd imagine you'd get a pretty decent range on that thing with two tanks.

The tank under the seat has been disconnected, and the way the seat is currently  installed it's impossible to fill.

Could be cool to rig up both tanks though.
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0


Offline Maritime

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Re: Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #4 on: Jun 22, 2017, 09:27:21 »
Ha cool little bugger. Moto ADD strikes again!
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline advCo

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Re: Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #5 on: Jun 22, 2017, 19:39:31 »
Does it run yet?

Nope. Carb is cleaned but I have to put it back together, heading northeast for the weekend so we had to run out the door.

Ordered a tube for the back. See if this thing will pop a wheelie.


Sent from my iPhone using DO THE TON
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline trek97

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Re: Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #6 on: Jun 22, 2017, 20:01:33 »
thing is so ugly its kinda cute.   ;)

Offline advCo

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Re: Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #7 on: Jun 26, 2017, 17:11:32 »
What's the consensus on this?

Not sure if the dipstick is from a different model, but it has a piece of rubber hose slipped over it with a notch. The oil level is just below the notch, so I assume that's where they were running it. Only thing I can think of for changing the amount of oil in the crankcase would be to slightly increase it for the added volume of the oil cooler.  The notch is about 3/4" lower than the end of the dipstick.








Sent from my iPhone using DO THE TON
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0

Offline advCo

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  • Nick Ol' Eye
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Doctor Funk, or, the strangest CT90 you've ever seen
« Reply #8 on: Jun 26, 2017, 17:42:24 »
According to the parts fiche for the CT90 K1 (according to frame serial number this is a '69 model), the RH cover and dipstick should look like this:


Here's what I have



It looks like the whole assembly that the dipstick threads into was stuck into the RH case cover now that I'm really looking at it.
« Last Edit: Jun 26, 2017, 17:46:21 by advCo »
"He broke the mirrors off his Cadillac, 'cause he doesn't like it looking like he looks back."

74 CB360 - Luna - http://www.dotheton.com/forum/index.php?topic=63294.0
82 GS550L - Tracker-ish - http://www.dotheton.com/forum/index.php?topic=67229.0 - Sold
74 XL350 - The Turd - http://www.dotheton.com/forum/index.php?topic=70252.0
Suzuki FA50 "No-Ped" - http://www.dotheton.com/forum/index.php?topic=71189.0
73 Suzuki RV125 -http://www.dotheton.com/forum/index.php?topic=73875.0