Author Topic: CB500/4 racer to roadie conversion/Australia (Read 35787 times)

neevo · « **Reply #125 on:** August 05, 2014, 04:17:32 AM »

What's the plan for attaching the collars? TIG them to the end?

ziokahn · « **Reply #126 on:** August 05, 2014, 04:32:50 AM »

That's the plan. The mate I spoke with thinks he'll be able to get away with one run on the inside. I'm thinking the weld will be flat enough not to affect exhaust flow. What's your opinion?

neevo · « **Reply #127 on:** August 05, 2014, 04:41:46 AM »

Yeah I think it should work as long as the collars are tight on the tube. That way you don't need filler and it should be a fairly flat weld.

Pretty sure the gaskets will account for some imperfections too.

ziokahn · « **Reply #128 on:** August 05, 2014, 04:53:02 AM »

Copy. I'm hoping to have these sorted shortly. So the sooner I get this engine together and back in the chassis the sooner I can run it over to Sids to have em fitted. Definatley should be done before yours are ready so I'll let you know what headaches I encounter.

neevo · « **Reply #129 on:** August 05, 2014, 04:56:19 AM »

Cheers ziokahn.

dave500 · « **Reply #130 on:** August 05, 2014, 02:11:01 PM »

we want video of the initial fire up!

ziokahn · « **Reply #131 on:** August 05, 2014, 03:14:52 PM »

I'm hoping it'll be bike porn and not catastrophic failure!!

dave500 · « **Reply #132 on:** August 08, 2014, 04:12:14 AM »

youll be right,just be sure of the cam timing that's all,not hard for a man of your calibre.

trueblue · « **Reply #133 on:** August 08, 2014, 06:07:11 AM »

Quote from: dave500 on August 08, 2014, 04:12:14 AM

youll be right,just be sure of the cam timing that's all,not hard for a man of your calibre.

Yep, just make sure it isn't 180 out, hey Dave.

SF · « **Reply #134 on:** August 08, 2014, 10:24:01 AM »

great read! cant wait to see it finished

ziokahn · « **Reply #135 on:** August 08, 2014, 06:37:39 PM »

What have you done Dave? And thanks for showing faith...

Pressure is on my brother for getting it back together correctly. I'll be supervising and passing the wrenches!.

Thanks for the interest SF.

dave500 · « **Reply #136 on:** August 08, 2014, 07:57:26 PM »

its a long running sohc joke trueblue and I reboot from time to time!your brother will do fine,bloke up the street was told by a local proper mechanic he didn't have the confidence to replace the timing belt on an Isuzu powered Gemini!mustave not wanted the job?

ziokahn · « **Reply #137 on:** March 05, 2015, 09:46:02 PM »

Update on the progress for whoever is interested. Slow progress to say the least but this is where it's at.
Bike has been out at Phil O'Brien's (pictured) getting some fabrication done over the past 2 months. Chrissy break hasn't helped.
Some may be familiar with Phil as he is an Aussie racing legend being part of the continental circus. I tracked down the original fabricator of the pipes Greg Ball who was unable to help me with the headers so he put me onto his old boss who happened to be Phil!! Greg was Phil's apprentice back in the day.
Phil's 74 and still going hard. Apart from being an absolute gentleman and all round legend, he has done a great job on the headers as well as fitting up the fairing. rear tail light bracket, side stand, headlight and a few other odds n ends. Bike will be ready in a week to fit the top end and wiring.
Let's hope it won't be another 3 months before the next post. Cheers

Retro Rocket · « **Reply #138 on:** March 05, 2015, 10:25:56 PM »

Very nice...

SF · « **Reply #139 on:** March 15, 2015, 11:47:37 AM »

Lookin good! Can't wait for a start up vid

ziokahn · « **Reply #140 on:** March 16, 2015, 02:49:02 PM »

Cheers guys. Itching to get it finished and kick it in the guts.

ziokahn · « **Reply #141 on:** January 19, 2017, 10:38:16 PM »

Apologies for the lack in correspondence fellow members. Although not actively blogging, I have however continued to chip away ever so slowly. I have had and continue to have problems with the uploading of photos and particularly the videos, so lost the motivation to maintain the blog.

Since the last time in which some fabrication and header work was completed, I have commissioned some more fabrication, having the ignition mounted, fabrication of side panels, fork braces, tacho surround and mount, rear brake light and cable mount, alignment of the tank and rear tail.

The top end was inspected and re fitted. A custom base gasket was made to allow for the higher lift. A little set back being the cam sustained some damage upon refitting and required some cast welding! Some re shaping of the fairing and wiring completed. Front brake and throttle cable made. Upon initial fire up, it was clear the carbs needed replacing as they did not have a choke or idle circuit. I understand they are off an SL125 and suited for track duties.

Two sets of original carbs were sourced and the 4 best stripped, hydro blasted and zinc plated. Fellow work colleague Dave Mac was meticulous in blasting the carbs, cast and alloy components so there was no polishing required. If anybody local requires any hydro blasting, just PM me and I'll forward you his details.

The bike in it's final guise before paint.

http://i1152.photobucket.com/albums/p482/ivs46/20161203_122959_zpsk6war5ls.jpg[/IMG][/URL]

The third start up vid. Untimed and balanced. Concerning is the amount of smoke and oil spitting out of the breather. Over the weekend the bike is being re compression and oil pressure tested. Re timed and balanced. Bores looked good, rings and valves within tolerances. If there are any opinions on the smoke screen, your inputs will be greatly appreciated. I am hoping after a good fang, this will subside.

https://www.flickr.com/photos/151297358@N08/shares/X8501T

Lastly the first blast. No catastrophic failures as yet!!!

https://www.flickr.com/photos/151297358@N08/shares/0X11d2

innovativems · « **Reply #142 on:** January 20, 2017, 07:13:24 AM »

definitely going to be following this build. Amazing bike and work!

bill440cars · « **Reply #143 on:** January 20, 2017, 08:37:30 AM »

Quote from: innovativems on January 20, 2017, 07:13:24 AM

definitely going to be following this build. Amazing bike and work!

I agree, I just got on here today and just got caught up myself.

Bootsey · « **Reply #144 on:** January 20, 2017, 11:58:19 AM »

Those carbs came out a treat & that tach mount looks ace!

ziokahn · « **Reply #145 on:** January 20, 2017, 01:27:41 PM »

Thanks guys for your feedback and kind words.
Veteran bloggers, I am curious to know if I should have started a new thread as there was an extensive gap between my last entry.
Upon writing my last entry it was advised I should, but my concern was it would not link to my last entries and the time line would be lost.
As you can tell blogging is not my forte.
Cheers

bwaller · « **Reply #146 on:** January 20, 2017, 02:13:01 PM »

I think updating this thread is the right thing to do. It allows people to follow your progress along from the beginning. Well done.

SOHC4 Cafe Racer Fan · « **Reply #147 on:** January 20, 2017, 03:51:52 PM »

Great looking project.

scottly · « **Reply #148 on:** January 20, 2017, 08:00:19 PM »

Quote from: ziokahn on January 19, 2017, 10:38:16 PM

Concerning is the amount of smoke and oil spitting out of the breather. Over the weekend the bike is being re compression and oil pressure tested. Re timed and balanced. Bores looked good, rings and valves within tolerances. If there are any opinions on the smoke screen, your inputs will be greatly appreciated. I am hoping after a good fang, this will subside.

I don't seem to be able to view the videos, but smoke and oil spitting out of the breather would indicate poor piston ring sealing. If it is excessive, I doubt a good fang will improve it, but it probably wouldn't hurt to give it a try..

ziokahn · « **Reply #149 on:** January 21, 2017, 01:58:34 AM »

Quote from: scottly on January 20, 2017, 08:00:19 PM

Quote from: ziokahn on January 19, 2017, 10:38:16 PM
Concerning is the amount of smoke and oil spitting out of the breather. Over the weekend the bike is being re compression and oil pressure tested. Re timed and balanced. Bores looked good, rings and valves within tolerances. If there are any opinions on the smoke screen, your inputs will be greatly appreciated. I am hoping after a good fang, this will subside.
I don't seem to be able to view the videos, but smoke and oil spitting out of the breather would indicate poor piston ring sealing. If it is excessive, I doubt a good fang will improve it, but it probably wouldn't hurt to give it a try..

I have changed some settings and hope the video's are able to be viewed.
Do let me know. If not I will try to re upload.
Thanks for your advice.
Smoke is exiting the crank breather that was fitted for the higher comp not the breather on the head cover. I'm aware the rings could be the issue but they along with the pistons were within tolerances. But yes I'm hoping it is not blowback.
Thanks again.

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Author Topic: CB500/4 racer to roadie conversion/Australia (Read 35787 times)