CL360 porting, milling and boring HO MY

Scarry Deuce

Scarry Deuce

I saw this in a cartoon I think I can do it ....
I just got my hands on a 1974 Honda CL360 I'm thinking of doing sum porting, milling and boring but have never dun this to a 4-stroke Honda before..
can you port the engine and keep the stock Constant Flow carbs and how much room do you have to bore and mill ..
I'm 6'5" and 225 lb's and I'm trying every trick I can to get all the horses I can I'm even thinking of a Aerocharger but I'm not my fondest of ideas ..


Deuce
 
I wouldn't mess with the ports, too much. They're already oversized for the engine.

As for other mods, you're not going to have as much luck find aftermarket stuff for the 360 as you would for the 350 or 450. That said, there are still some possibilities. I'm getting a new cam for mine. The increased lift and duration, however, has made it necessary to get new pistons (more compression and deeper valve pockets) and new valve springs. Include machining costs and I'm already up to $1200.

If you want bang for your buck, take a look at first reducing the weight of the bike and then at improving suspension. If that's still not enough, then examine some engine mods.
 
Stock carbs work fine when modified.
Someone is making a 70mm piston kit but I can't find out who (it's probably going to need new liners)
I know you can use Suzuki GS850 G pistons but they are no longer available stock size from Suzuki.
I've posted info and dyno run in my build.
I also make new air correctors to make carbs work in mid-range when you fit pods
 
Any one know if this 1974 cl360 Honda can run without a battery I think it a 6V and I don't have one ?


I was going to try and start this thing to day ..


thanks for the help


Deuce
 
Scarry Deuce said:
Any one know if this 1974 cl360 Honda can run without a battery I think it a 6V and I don't have one ?


I was going to try and start this thing to day ..


thanks for the help
Deuce
Click to expand...

It's 12 volt and do not try to run it w/o the battery.
 
well I just check my compression on the cl360 and it don't look good I got a 100 psi in both cylinders :-\


but that's good compared to my cb550k it's pushing a whapping 70psi in three of the four cylinders .. the cb550 may be headed to the scrap pile :'(
but i'm thinking I still want to try to fix the cl360 am I nuts ? any chance it's just the ring's ?
 
Possible.
Put a squirt of oil into each cylinder through the spark plug hole and try the compression test again.
 
You may have problems with the valves seating, rather than the cylinders, then.
You won't know for certain until you're able to open it up.
 
The valves is my next thought how hard is it to tear in to one of these things the overhead cam makes me think it going to be a shimming nightmare


mspringer:
I'm in Knobtown and I may have a pile of them for you ..
 
I tore into my 360 with just a set of metric wrenches and a screwdriver. Pretty simple stuff.
 
There is definitely an order, but its pretty simple under there. If you dont have one get a manual, there $20 well spent.
 
You don't have a manual yet do you.
It's available for download all over the place.
The only 'problem' could be cam chain tensioner and guide, they are 'features' (just like Microsoft, there are no 'issues' ;D )
 
No not for the cl360 I'm not having much luck I can find downloads for cb400 cb350 and most all the others ..


someone sent me one for my cb550k but I'm having problems getting to the pc it's on is not working right
 
350 and 360 manuals are the same. The differences for the 360 are an addendum in back pages.
 
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