Author Topic: Project 1971 CB450 K4 Twin DOHC (Read 8606 times)

Simpson · « **Reply #25 on:** August 06, 2010, 01:16:01 PM »

Quote from: MidTNJasonF on August 05, 2010, 05:24:53 PM

Very nice work. I have a 72 450 DOHC I just finished tearing down to the frame for a build up project. I am still in the decision making process on mine. Cafe or Street Tracker is most likely since I was not interested in keeping it stock. Colors and finishes are up in the air as well but I need to find a set of covers like you did so I can experiment with polish, bead blast, anodizing, and/or painting.

I have an extra set of unpolished covers if you are interested...

MidTNJasonF · « **Reply #26 on:** August 06, 2010, 02:02:21 PM »

Quote from: Simpson on August 06, 2010, 01:16:01 PM

Quote from: MidTNJasonF on August 05, 2010, 05:24:53 PM
Very nice work. I have a 72 450 DOHC I just finished tearing down to the frame for a build up project. I am still in the decision making process on mine. Cafe or Street Tracker is most likely since I was not interested in keeping it stock. Colors and finishes are up in the air as well but I need to find a set of covers like you did so I can experiment with polish, bead blast, anodizing, and/or painting.

I have an extra set of unpolished covers if you are interested...

Very interested, I will send you an message.

Simpson · « **Reply #27 on:** August 06, 2010, 03:20:00 PM »

very cheap left over project parts

Simpson · « **Reply #28 on:** August 12, 2010, 01:32:02 PM »

Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh crap
Engine failure... Lost compression in the right cylinder.
Time to rebuild top end.

CBJoe · « **Reply #29 on:** August 12, 2010, 03:05:45 PM »

That sucks....

If it's not one thing, its another

Simpson · « **Reply #30 on:** October 21, 2010, 05:36:37 PM »

Well after pulling the engine and taking the top end apart, turns out the right side oil ring ceased. The compression rings broke apart and it galded the cylinder. The engine was updated with new valve seals, orings, gaskets, piston rings and pistons. The cylinder was honed and the engine was assembled.

Simpson · « **Reply #31 on:** October 21, 2010, 05:40:29 PM »

Picture of what I found...

Simpson · « **Reply #32 on:** October 21, 2010, 05:46:05 PM »

Well for the past week the engine is back in and running.
Still doing some fine tuning and last few updates.
Overall, I like the bike as its fast and nimble.
Vibration is definitely a factor on this bike.
Here is a picture charging up a new battery.

Simpson · « **Reply #33 on:** October 21, 2010, 05:47:20 PM »

Finally in the regular bike rotation.

Retro Rocket · « **Reply #34 on:** October 21, 2010, 05:55:28 PM »

Quote from: Simpson on October 21, 2010, 05:46:05 PM

Well for the past week the engine is back in and running.
Still doing some fine tuning and last few updates.
Overall, I like the bike as its fast and nimble.
Vibration is definitely a factor on this bike.
Here is a picture charging up a new battery.

Good job mate, she looks great...

Mick

TwoBigCats · « **Reply #35 on:** October 22, 2010, 08:13:44 PM »

just came across your project and wanted to offer compliments on the nice work. 450's - cb or cl - were great bikes... i hope to get my hands on "the right one" in the near future. your bike looks great tucked in with the 750 and is that a 350 in the back?

best,
hal

going4speed · « **Reply #36 on:** October 22, 2010, 08:33:54 PM »

beautiful collection there

I have a speed triple as well...fantastic machine.

Where did you get you tank etc painted?

Simpson · « **Reply #37 on:** October 23, 2010, 05:56:03 AM »

Some more pictures...

Simpson · « **Reply #38 on:** October 23, 2010, 05:59:10 AM »

Some more pictures...

Simpson · « **Reply #39 on:** October 23, 2010, 06:08:22 AM »

Some more pictures...

Simpson · « **Reply #40 on:** October 23, 2010, 06:09:04 AM »

Some more pictures...

Simpson · « **Reply #41 on:** October 23, 2010, 08:14:24 AM »

The bike was started warm few moments before but still relatively cold.
[youtube=425,350]UtNk2sUOQ70[/youtube]

Retro Rocket · « **Reply #42 on:** October 23, 2010, 03:37:10 PM »

Beautiful bike mate.....great work..

Mick

ekpent · « **Reply #43 on:** October 24, 2010, 07:38:18 AM »

Great Job Simpson,all your bikes are very nice. I just sold a 74 450 ,no where near that pretty.I noticed in a couple pics though that maybe the speedometer and tach are mounted in reverse. On mine whick was still fairly unmolested the tach is on the right and the sppedo on the left. Keep up the good work. Eric

Simpson · « **Reply #44 on:** October 25, 2010, 01:41:06 PM »

Believe it or not, I think Honda actually made them like that...
See the attachment. Yeah I struggled with that at first too.
There is a counter reset on the Speedometer on the right side so it has to go there.
I've got a new speedo coming in the mail today.
An earlier model but the price was right so I could not resist.
Hopefully it fits or I just wasted 60 bucks on an NOS Speedo.

Thanks for the compliments.
I don't usually plan on shinning them up too much,
just end up getting carried away from the original plan.

ekpent · « **Reply #45 on:** October 26, 2010, 05:20:10 PM »

Yep I think yours must be correct--Pictures don't lie---

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Author Topic: Project 1971 CB450 K4 Twin DOHC (Read 8606 times)