ADVrider

Go Back   ADVrider > Bikes > Old's Cool
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-18-2009, 10:31 AM   #1
jtn OP
Gnarly Adventurer
 
Joined: Oct 2006
Oddometer: 120
CL175 rebuild

Hi folks, thought I'd share a project that just found me --

Saw this sign on a rusty 1970 honda cl175 on the side of the road in the rain.

Who could pass it up? Engine turns over, but doesn't start. Maybe something to do with missing the battery.


I'm hoping to turn it into something like these:



Any leads on on-line repair manuals for this era? It seems like the CL series shares most parts with the CB's of the same years (except the exhaust headers, side cover . . .) so could I just get cb 175 parts and it'll work? I'll put up more pics as I make progress . . .
__________________
Dual Sporting a TL350 / Trail 90 Rebuilds / CL175 Cafe / GL500 Rebuild

'70 CL175, CL350
'82 GL500
'69 - '74 Trail 90's
jtn is offline   Reply With Quote
Old 06-18-2009, 12:14 PM   #2
nedodjija
Studly Adventurer
 
nedodjija's Avatar
 
Joined: Nov 2008
Location: Pocatello ID
Oddometer: 657
My understanding is that lots of people like better CB160 than 175s because of the difference in the frame and because 160s have overhang engine. However, you cannot beat the price on that baby. Those bikes look awesome. Please keep us posted.
__________________
Stroms will invade Poland
nedodjija is offline   Reply With Quote
Old 06-25-2009, 07:52 PM   #3
jtn OP
Gnarly Adventurer
 
Joined: Oct 2006
Oddometer: 120
Carbs out and . . . trashed?

Pulled the carbs out today, and there was a ton of corrosion. Got them soaking in some gas for a while and hopefully that will help. What do you all think? The throttle body wouldn't even slide up & down, so I don't know if its worth the effort to refurbish the carbs or just find new ones.









Tank is shot, and I'd like to replace it with one that has those knee pads on the sides -- were those for the cb160's? Will they fit a cl175?



Spark plugs and top end didn't look that bad (except for the corrosion on one plug):




__________________
Dual Sporting a TL350 / Trail 90 Rebuilds / CL175 Cafe / GL500 Rebuild

'70 CL175, CL350
'82 GL500
'69 - '74 Trail 90's
jtn is offline   Reply With Quote
Old 06-26-2009, 01:37 PM   #4
Yad
yet another dave
 
Yad's Avatar
 
Joined: Jan 2007
Location: middle of the road Ohio
Oddometer: 360
Quote:
Originally Posted by jtn
Pulled the carbs out today, and there was a ton of corrosion. Got them soaking in some gas for a while and hopefully that will help. What do you all think? The throttle body wouldn't even slide up & down, so I don't know if its worth the effort to refurbish the carbs or just find new ones.
gas won't help. There are many ways to clean carbs, do some searching and you will find details.

1. carb dip in a big can (toxic but effective). Not the aerosol stuff, that only works after they're already clean.
2. ultrasonic cleaner (can be expensive unless you already have one)
3. degreaser (e.g. Purple Power) to get rid of gas residue (brown stuff)followed by acid (SHORT exposures, not soaking) to get rid of oxidation (white stuff). I use toilet bowl cleaner and a toothbrush. Just a couple of minutes at a time won't harm the parts, and it really helps nicely with the white stuff. Doesn't help with the brown stuff.

This is one of my favorite jobs in motorcycle refurbishment. Regardless of which method you choose, it's definitely worth trying to salvage them. I have very rarely needed to actually replace carbs, nearly all of them can be saved with thorough cleaning, although you are very likely to need parts (jets, float needle and seat, at least).

Good luck!
dave
Yad is offline   Reply With Quote
Old 06-26-2009, 01:41 PM   #5
Yad
yet another dave
 
Yad's Avatar
 
Joined: Jan 2007
Location: middle of the road Ohio
Oddometer: 360
P.S. I strongly recommend securing a valid title before you spend any significant time or $. Depends on your location, but in some places it borders on impossible to title a bike like that if you cannot get the previous owner to do it (in that case, it's easy). Do some searches on this. Fair warning.
Yad is offline   Reply With Quote
Old 06-29-2009, 02:49 AM   #6
EvilClown
Reality show stunt double
 
EvilClown's Avatar
 
Joined: Sep 2006
Location: In the shadow of the Uncanoonucs...
Oddometer: 16,343
Nice find.


__________________
These are our Golden Years. ~ EC

The future is no place to place your better days. ~ DMB

ECUADOR: Maintaining Rigid Flexibility
EvilClown is offline   Reply With Quote
Old 07-02-2009, 06:55 PM   #7
jtn OP
Gnarly Adventurer
 
Joined: Oct 2006
Oddometer: 120
Stuck!

Quote:
Originally Posted by Yad
P.S. I strongly recommend securing a valid title before you spend any significant time or $. Depends on your location, but in some places it borders on impossible to title a bike like that if you cannot get the previous owner to do it (in that case, it's easy). Do some searches on this. Fair warning.
Thanks for the advice -- I figured if it got close to starting I'd look into getting the title, if not then I'd just give it to someone who has more patience than I do.

That said . . . the current goal is to get the engine to run then I'll worry about the details (brakes, lights, gas tank . . . )

Cleaned the carbs (toilet cleaner followed by spray carb cleaner did the trick!) and reinstalled them:


Drained and replaced the oil (I figured if I got stupid lucky and it actually started I didn't want to mess up anything)


Pulled the key ignition and hotwired it


By the way, this is why you need big guage wire when hooking up the battery


Hooked up a temporary gas line & filled it with gas (there's no tank, just got the float bowls full and used that)


And then gas puked out of one of the carbs -- forgot I stripped the drain thread and found a little hole in the side of the float bowl too. Hot glue to the rescue.


__________________
Dual Sporting a TL350 / Trail 90 Rebuilds / CL175 Cafe / GL500 Rebuild

'70 CL175, CL350
'82 GL500
'69 - '74 Trail 90's
jtn is offline   Reply With Quote
Old 07-02-2009, 07:07 PM   #8
jtn OP
Gnarly Adventurer
 
Joined: Oct 2006
Oddometer: 120
engine doesn't catch

So, the next step was to push the start button. The starter actually turned over, which is better than I expected, but the engine didn't fire up. So I checked the spark by pulling each plug and grounding it and hitting the starter, and both had a spark (not pictured here b'c I don't have three arms)


Then I thought maybe the compression was off, so I put my thumb over the spark plug hole and turned the engine over -- the R cyl had some pressure (I couldn't keep the air from pushing past my thumb), and the L had some but less (I could hold it in with some force). Not enough compression to fire? I'm not sure, but my gut says that wasn't the problem.


Thought I'd test it with my compression guage, but it didn't fit the spark plug hole. Anyone know of an adaptor for this?


So after trying again, I thought maybe the engine is flooding. When I pulled the plug on the L side I noticed that the end was damp


And that there was some gas leaking out the air intake for that carb on the L side too


But the R side seemed fine. I would have thought if 1 side worked and the other didn't as well, the engine would still catch and just run poorly. Maybe not?

So, I got frustrated and just steel wooled the exhaust manifold.


Any ideas? What should I try next? I've got a spark, gas, and air in the cylinders, what else do I need?
__________________
Dual Sporting a TL350 / Trail 90 Rebuilds / CL175 Cafe / GL500 Rebuild

'70 CL175, CL350
'82 GL500
'69 - '74 Trail 90's
jtn is offline   Reply With Quote
Old 07-02-2009, 07:29 PM   #9
postaldave
gone postal
 
postaldave's Avatar
 
Joined: Oct 2007
Location: lexington ky
Oddometer: 796
i strongly recommond you take Yad's advise. i've seen dream crushed over a title issue.


Quote:
Originally Posted by Yad
P.S. I strongly recommend securing a valid title before you spend any significant time or $. Depends on your location, but in some places it borders on impossible to title a bike like that if you cannot get the previous owner to do it (in that case, it's easy). Do some searches on this. Fair warning.
__________________
postaldave.com
5united.net
facebook.com/slash5

1972 BMW R75/5 toaster
1995 BMW GS 1100
2001 yamaha kodiak 400
2002 HONDA VFR interceptor

no one is promised a tomorrow but one more ride would be nice.


postaldave is offline   Reply With Quote
Old 07-03-2009, 02:18 AM   #10
EvilClown
Reality show stunt double
 
EvilClown's Avatar
 
Joined: Sep 2006
Location: In the shadow of the Uncanoonucs...
Oddometer: 16,343
Quote:
Originally Posted by jtn

Any ideas? What should I try next? I've got a spark, gas, and air in the cylinders, what else do I need?
I'd get that carb leak ironed out and throw in a some new plugs - or at least clean the old ones. A match in the cylinder will burn out the gas and your finger tips if it's flooded. One of those long lighters will usually save the fingers.

Once all that is done try starting it by spraying WD40 in the carbs. If it runs on that it'll run.
__________________
These are our Golden Years. ~ EC

The future is no place to place your better days. ~ DMB

ECUADOR: Maintaining Rigid Flexibility
EvilClown is offline   Reply With Quote
Old 07-04-2009, 12:09 PM   #11
Lukengruven
n00b
 
Joined: May 2009
Location: KC
Oddometer: 5
cl175 carb slide

I've got a '73 cl175, and I'm trying to sort out the left carb. perhaps anyone could lend some advice.
the slide is tight in the tube, I've clean and cleaned it. it slides freely in the right carb, but not the left carb.
does anyone with this bike happen to know or remember the numbers on the slides on the carbs?
mine has a 155/25 in the left and a 156/25 in the right.
I am scouring the internet to see if those are different
part numbers for the left/right, or sizing designations.
If anyone has any input, that would be great, thanks!
Lukengruven is offline   Reply With Quote
Old 07-11-2009, 06:09 PM   #12
jtn OP
Gnarly Adventurer
 
Joined: Oct 2006
Oddometer: 120
Quote:
Originally Posted by EvilClown
I'd get that carb leak ironed out and throw in a some new plugs - or at least clean the old ones. A match in the cylinder will burn out the gas and your finger tips if it's flooded. One of those long lighters will usually save the fingers.

Once all that is done try starting it by spraying WD40 in the carbs. If it runs on that it'll run.

No luck -- the good news is that the electric start works -- it's turning the engine over but it doesn't catch, even with the new plugs. I'm getting stumped -- any ideas?
__________________
Dual Sporting a TL350 / Trail 90 Rebuilds / CL175 Cafe / GL500 Rebuild

'70 CL175, CL350
'82 GL500
'69 - '74 Trail 90's
jtn is offline   Reply With Quote
Old 07-12-2009, 01:41 AM   #13
EvilClown
Reality show stunt double
 
EvilClown's Avatar
 
Joined: Sep 2006
Location: In the shadow of the Uncanoonucs...
Oddometer: 16,343
Quote:
Originally Posted by jtn
No luck -- the good news is that the electric start works -- it's turning the engine over but it doesn't catch, even with the new plugs. I'm getting stumped -- any ideas?
A couple o questions: Is there a (reconfirmed) spark? What do the plugs look like? How did you go about spraying the WD40 (go into detail)? Have you found that compression gage adapter yet?
__________________
These are our Golden Years. ~ EC

The future is no place to place your better days. ~ DMB

ECUADOR: Maintaining Rigid Flexibility
EvilClown is offline   Reply With Quote
Old 09-25-2009, 07:47 PM   #14
jtn OP
Gnarly Adventurer
 
Joined: Oct 2006
Oddometer: 120
down to the frame

Got 25 psi in one cyl, and 40 in the other. Took it as a sign that I should learn to recondition valves & pistons. the rings on one were totally stuck and broke right off (looked like water was sitting in the cyl).



The head looked pretty corroded so I put the valves on a wire wheel and am in the process of lapping them. lots of carbon build up and rust, so I think that's where I was loosing a bunch of compression.


Anyone have thoughts about the cam chain tensioner? looks like the teeth got worn off, but its just a tensioner, so . . .


I'm also getting good at breaking bolts and not extracting them correctly -- time to learn how to use one of those keenserts


And we're down to the crankcase.


Meanwhile I took everything down to the frame and got a new (less rusted) gas tank from Bill's Bonyard


And plan to strip the tank paint (leaving it burnished steel with a clear-coat) and repaint the frame matte black


I honed the cylinders and orders some new rings, so hopefully those will be in soon and I can start the re-build . . .
__________________
Dual Sporting a TL350 / Trail 90 Rebuilds / CL175 Cafe / GL500 Rebuild

'70 CL175, CL350
'82 GL500
'69 - '74 Trail 90's
jtn is offline   Reply With Quote
Old 09-25-2009, 07:56 PM   #15
Quickv4
Pro Turd Polisher
 
Quickv4's Avatar
 
Joined: Jul 2009
Location: Dickinson, Nort' Dakohtah- Orig. from Wiscowsin
Oddometer: 550
Refirbing a bike (that seems utterly abused and neglected), with NO TITLE.....

Been there done that, wouldnt EVER do that again.

Life is so much nicer when you have a title, regardless of the bike's condition! It gives you a motivation as in- "If I get this thing running and ridable, all I then have to do is skip to the DMV, and shes all kosher, lets ride!!!!)
__________________
Jerry
____________________________
Great forum and Resource for 1st and 2nd gen Honda V4s SabMagIntercept


www.v4hondabbs.com
Quickv4 is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 11:44 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014