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CB350K4 project started

24K views 100 replies 23 participants last post by  Stou  
#1 ·
Last summer I bought a '72 CB350K4. I'm kind of busy with 2 jobs and doing 2 trial series, vintage and modern. So I just started to work on the CB 2 weeks ago.

The bike:



I started to disassemble:









It's a long terme winter project. I plan to get it on the road next summer.
 
#2 ·
Great progress already! Keep up the good work
 
#5 ·
Yes, it was not too bad. But I go for a full restore job. I want it to look like out of the showroom when I'll take it out next year.

To give you an example, I restored this CR125 last year. I started with that:


And now here's what it look like after a year of work:


I do everything myself, paint, mechanical and welding if necessary. This is how I take care of the long Canadian winter evening!
 
#8 ·
Great start! I did not see the words "cafe" or "bobber" anywhere, and the work looks first rate. I think I would be proud to own a bike you had seen to.

Ray
 
#10 ·
Fxray, this one have every parts to make a nice stock CB350, so no cafe or bobber on this one.

Drifter, I hope the finished product will be as good as the CR. I think I can do it, it's only a matter of time.

Thanks guys!
 
#14 ·
A small update. I don't have a lot of time to put on the K4 right now but I try to do a little something when I can.

Pistons and rings are good and in the spec. The guy who sold me the bike said the timing chain was changed last year. Everything look good. So nothing to do inside the engine. I ordered a gasket set to put everything back together when engine parts will be cleaned and/or painted.

I started to clean and polish the engine base. It's a long and tedious job but it will look good.


Sides covers, cylinder and head will be painted silver. Small covers like the oil filter cover will be polished.



I received the Bacchus Olive paint from VMR
 
#15 ·
Looking good Stou!!!
I will have to pay you a visit next summer
to see it in person ;)
 
#18 ·
I removed the oil filter cap and saw that this one was not cleaned often. There's lot of metal particles in there! :shock:


I cleaned and painted cylinder, head and valves cover




And today I received lots of small parts from CMSL. I was surprised to see that many of those parts was genuine Honda parts. When I looked at dealers around here, many of those parts was indicated not available any more. Very good service and fast shipping. Ref: http://www.cmsnl.com/
 
#20 ·
Ditto
That engine looks fantastic.
I thought my bike looked amazing but when I see everyone else's, I don't
feel so good anymore.
I'll have to stop reading this board. not ;)
 
#22 ·
Thanks guys! I used VHT High Temp paint for the engine. I used that brand of paint for others builds I did, and it's a good quality paint. This time to get that matt silver finish, I use the VHT FlameProof coating. I know I don't need a paint that can sustain so much heat, 2000F, but I want that nice matt silver finish.
 
#25 ·
Stou, I see that you are a professional painter. Did you spray the VHT on your engine with a gun, or from a rattle can? It looks very good. I like the color, and it goes well with some polished alloy parts as highlights. Will that paint withstand a bit of gasoline without departing?

Ray
 
#26 ·
Fxray, I used the rattle can for that job. New high end rattles cans have a very good spray. It's not like the good old $5 rattle can. They have a very nice spray. If you follow the instruction, you have very good result. Right now I can't tell about the long term quality of that specific paint. It's the first time I used this line of VHT paint, the FlameProof coating. But if you look at the caracteristics of that paint, it is looking very good! (http://www.vhtpaint.com/products/flameproof/)

Here's some détails:
VHT FlameProof™ Coating will renew and extend the life of any surface exposed to extremely high temperatures. This unique coating is a matte finish, silicone ceramic base widely used by the automotive industry on exhaust systems and the aerospace industry for jet engines, re-entry vehicles and other high temperature applications. VHT FlameProof™ Coating will withstand temperatures up to 2000°F (1093°C) and is ideal for use on headers, exhaust systems, or wherever an extreme temperature coating is needed.
Temperature: 1300°F-2000°F (704°C-1093°C)
Applications: Headers, Exhaust Manifolds, Piston Domes, Inside Heads
They say that it can be used inside motor, piston domes and inside heads!

You can also bake the paint for a maximum quality
On the Vehicle
Paint must be completely dry before curing
Run at idle for 10 minutes
Cool for 20 minutes
Run at idle for 20 minutes
Cool for 20 minutes
Run under normal operating conditions for 30 minutes

Off the Vehicle
Paint must be completely dry before curing
Heat to 250°F (121°C) for 30 minutes
Cool for 30 minutes
Heat to 400°F (204°C) for 30 minutes
Cool for 30 minutes
Heat to 650°F (343°C ) for 30 minutes
I will do it in the oven... when my wife will be out! :D