Honda CL90

L00N · 10-16-2019, 10:22 PM

Soon to be a CL125!

My brother gave it to me. Engine is siezed, back wheel was siezed and front rolls okay. Gonna clean up the gunk in the brakes and it should be rolling fine.

Its pretty rusty. I have to figure out how to clean it up. Ill probably just ride it as is...

Gotta Figure out the wiring, so lets clean the tank while we figure things out. A shake with some nuts and bolts to knock things loose.

Cleaning with Hydrolosis (washing soda, water, metal rod[a stripped ct70 brake rod], and battery charger). This was my first time and I'm excited to see the results, Its not as intimidating as I used to think.

The new power plant, a 1P53FMI. I think the shift pattern is 1N234.

I have to figure out how to wire this up. Next two pictures are from the engine.

Harness from my brother that I will be using

I plugged the Y,Y,G,G/W, BRW/BLK into the engine. Is this right? I wanted to get things sorted before stuffing everything into place.

Thirty minutes in

One hour

Two Hours. Gonna leave it on for a few hours before I go to sleep and try after work. In between times, I wiped off all the goop and scrapped the sacrificial annode so the rust can have something better to adhere too. I'll change the solution tomorrow after work and get a nice photo of the after.

I need to get a battery and speedo. Does anyone know if the ebay/amazon speedos are plug and play?

**cheesy** · 10-17-2019, 06:07 AM

Good job. I had a CS90 with a CL exhaust in the early seventies. It was kind of a chick magnet in high school. I married the first girl I gave a ride to. She rides in my sidecar now.

As to a speedometer, consider either a front hub magnet/speed sensor type or a GPS unit. You’ll play hell trying to find a quality mechanical unit with the correct gear ratio.

L00N · 10-17-2019, 08:51 PM

Drained the tank and its still super rusty. Changed the solution hoping that will help. Took a wirebrush/drill to take off some of the rust but had to get the angle grinder and flapper disc to take of the deep stuff. The rust in the battery box I don't know how to deal with. Will probably just leave it till I figure out a cheap/free solution. Im sure media blasting will take care of it fine.

Does how I wired up the engine to the harness look right?

**cheesy** · 10-17-2019, 10:24 PM

Can't help you with the wiring unless I have it in my hands. It's also been 48 years since I've touched a Honda 90. Don't be surprised if the tank is too far gone when you've finished with the electrolysis, you could end up with painted tin foil, though I hope not.

However, inquiring minds want to know what's under the Brooks saddle.

Weldangrind · 10-18-2019, 11:32 AM

I've had excellent results with a product that is much like CLR; I dumped a bunch in the tank with a handful of stainless screws and bolts and gave it a good shake. I placed it vertically for a day, then shook it again. I then placed it on the left side for a day... you get the idea. After a few days, I rinsed out the chemicals and poured some methyl hydrate inside and sloshed it around to displace the water. I dumped that out and then sloshed some Varsol inside to prevent flash rusting. Worked like a charm with no holes. I don't always get that lucky.

The pics are a little hard to see for me. If you upload directly to the forum, you can provide a larger size that we can work with. Here's a tutorial: http://www.chinariders.net/showthread.php?t=14422

**JerryHawk250** · 10-18-2019, 11:43 AM

Quote:

Originally Posted by Weldangrind

The pics are a little hard to see for me. If you upload directly to the forum, you can provide a larger size that we can work with. Here's a tutorial: http://www.chinariders.net/showthread.php?t=14422

Just click on the picture and it will enlarge.

Weldangrind · 10-18-2019, 12:04 PM

This may help: https://sep.yimg.com/ca/I/dratv_2268_39080603

Tons of good info at DrATV.

L00N · 12-10-2019, 08:07 PM

Project took a back seat while during the last months. Snow added a bit to my laziness. Worked in it yesterday only too find out the motor does not bolt in. Cl90 and s90's are 3 bolt patterns and pit bikes are 2 bolt patterns.

Luckily there a fellow up in Canada doing the same swap to an s90 so I am waiting to hear back from him about getting the adapter plates made or getting the 3d print job.

This is how far off the dratv engine mount is off.

Worse case scenario I just swap the lifan into my ct90.

diyRdie · 12-10-2019, 09:55 PM

My brother never gave me anything like this. That is a heck of a project, I am jealous to say the least.. good luck. I can't wait to see what happens.

Weldangrind · 12-11-2019, 11:33 AM

DrATV has a ton of good info and parts for just this type of swap. Have a look: http://dratv.com/adchtob.html

L00N · 12-12-2019, 01:23 AM

Quote:

Originally Posted by Weldangrind

DrATV has a ton of good info and parts for just this type of swap. Have a look: http://dratv.com/adchtob.html

I do have that adapter for the ct90. It’s a couple of inches short. I could trim the frame and have it work.

10-16-2019, 10:22 PM	#1
L00N Join Date: Oct 2019 Posts: 23	Honda CL90 Soon to be a CL125! My brother gave it to me. Engine is siezed, back wheel was siezed and front rolls okay. Gonna clean up the gunk in the brakes and it should be rolling fine. Its pretty rusty. I have to figure out how to clean it up. Ill probably just ride it as is... Gotta Figure out the wiring, so lets clean the tank while we figure things out. A shake with some nuts and bolts to knock things loose. Cleaning with Hydrolosis (washing soda, water, metal rod[a stripped ct70 brake rod], and battery charger). This was my first time and I'm excited to see the results, Its not as intimidating as I used to think. The new power plant, a 1P53FMI. I think the shift pattern is 1N234. I have to figure out how to wire this up. Next two pictures are from the engine. Harness from my brother that I will be using I plugged the Y,Y,G,G/W, BRW/BLK into the engine. Is this right? I wanted to get things sorted before stuffing everything into place. Thirty minutes in One hour Two Hours. Gonna leave it on for a few hours before I go to sleep and try after work. In between times, I wiped off all the goop and scrapped the sacrificial annode so the rust can have something better to adhere too. I'll change the solution tomorrow after work and get a nice photo of the after. I need to get a battery and speedo. Does anyone know if the ebay/amazon speedos are plug and play?
	7

10-17-2019, 06:07 AM	#2
cheesy Moderator Join Date: Jul 2010 Location: Elburn, IL Posts: 5,803	Good job. I had a CS90 with a CL exhaust in the early seventies. It was kind of a chick magnet in high school. I married the first girl I gave a ride to. She rides in my sidecar now. As to a speedometer, consider either a front hub magnet/speed sensor type or a GPS unit. You’ll play hell trying to find a quality mechanical unit with the correct gear ratio. __________________ Cheesy ______________________________________ 07 Hi Bird Enduro-Flown the Coop 07 Ural Gear Up 79 Honda CX500 77 VeloSolex 4600 V3 73 VeloSolex 3800 I'm making this up as I go.-Indiana Jones Telling me something 'is for my own good', is a fast way to a fat lip.-Me I don't even care about my own problems, why should I care about yours?-Quote on one of my favorite t-shirts
	2

10-17-2019, 10:24 PM	#4
cheesy Moderator Join Date: Jul 2010 Location: Elburn, IL Posts: 5,803	Can't help you with the wiring unless I have it in my hands. It's also been 48 years since I've touched a Honda 90. Don't be surprised if the tank is too far gone when you've finished with the electrolysis, you could end up with painted tin foil, though I hope not. However, inquiring minds want to know what's under the Brooks saddle. __________________ Cheesy ______________________________________ 07 Hi Bird Enduro-Flown the Coop 07 Ural Gear Up 79 Honda CX500 77 VeloSolex 4600 V3 73 VeloSolex 3800 I'm making this up as I go.-Indiana Jones Telling me something 'is for my own good', is a fast way to a fat lip.-Me I don't even care about my own problems, why should I care about yours?-Quote on one of my favorite t-shirts
	0

10-18-2019, 11:32 AM	#5
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I've had excellent results with a product that is much like CLR; I dumped a bunch in the tank with a handful of stainless screws and bolts and gave it a good shake. I placed it vertically for a day, then shook it again. I then placed it on the left side for a day... you get the idea. After a few days, I rinsed out the chemicals and poured some methyl hydrate inside and sloshed it around to displace the water. I dumped that out and then sloshed some Varsol inside to prevent flash rusting. Worked like a charm with no holes. I don't always get that lucky. The pics are a little hard to see for me. If you upload directly to the forum, you can provide a larger size that we can work with. Here's a tutorial: http://www.chinariders.net/showthread.php?t=14422 __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	2

10-18-2019, 12:04 PM	#7
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	This may help: https://sep.yimg.com/ca/I/dratv_2268_39080603 Tons of good info at DrATV. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

10-17-2019, 08:51 PM	#3
L00N Join Date: Oct 2019 Posts: 23	Drained the tank and its still super rusty. Changed the solution hoping that will help. Took a wirebrush/drill to take off some of the rust but had to get the angle grinder and flapper disc to take of the deep stuff. The rust in the battery box I don't know how to deal with. Will probably just leave it till I figure out a cheap/free solution. Im sure media blasting will take care of it fine. Does how I wired up the engine to the harness look right?
	0

12-10-2019, 08:07 PM	#8
L00N Join Date: Oct 2019 Posts: 23	Project took a back seat while during the last months. Snow added a bit to my laziness. Worked in it yesterday only too find out the motor does not bolt in. Cl90 and s90's are 3 bolt patterns and pit bikes are 2 bolt patterns. Luckily there a fellow up in Canada doing the same swap to an s90 so I am waiting to hear back from him about getting the adapter plates made or getting the 3d print job. This is how far off the dratv engine mount is off. Worse case scenario I just swap the lifan into my ct90.
	1

12-10-2019, 09:55 PM	#9
diyRdie Join Date: May 2019 Location: Rockford, IL Posts: 98	My brother never gave me anything like this. That is a heck of a project, I am jealous to say the least.. good luck. I can't wait to see what happens. __________________ Good judgment comes from experience, and often experience comes from bad judgment. MY BIKE'S THREAD
	0

12-11-2019, 11:33 AM	#10
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	DrATV has a ton of good info and parts for just this type of swap. Have a look: http://dratv.com/adchtob.html __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	1