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Author Topic: 72 CB500 Restomod - *Update* Sold!  (Read 46086 times)

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Offline calj737

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Re: 71 CB500 Restomod - Tuning Time
« Reply #150 on: May 25, 2018, 03:53:05 PM »
You didn’t say where you looked, but here’s where you should order from:
https://jetsrus.com
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline DurangoCB

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Re: 71 CB500 Restomod - Tuning Time
« Reply #151 on: May 25, 2018, 04:02:25 PM »
Quote from: Scramps on May 25, 2018, 08:50:26 AM
Sweet lord, carburetor jets are expensive!!

I must be looking in all the wrong places, because $70 plus shipping seems an awful lot to pay for a set of slow and main jets.

Anybody know of a reliable affordable source for jets?

I got mine from DCC and I think they were like $4 each.

https://www.dimecitycycles.com/vintage-cafe-racer-caferacer-bobber-brat-chopper-custom-motorcycle-carburetor-parts-keihin-cv-secondary-jet-130-026-197.html
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Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #152 on: May 25, 2018, 04:12:46 PM »
Quote from: calj737 on May 25, 2018, 03:53:05 PM
You didn’t say where you looked, but here’s where you should order from:
https://jetsrus.com

I had looked at jetsrus, eBay, Dennis Kirk, and a few other sites that I can’t remember. The pilot jets on jetsrus were $11/each, which I thought was a little steep, but that was also the only place that I could find with the sizes plainly listed.

Going by the jetting guide from the tech forums, I figure that I’m going to need +4 sizes for the slow jet (pod filters, 4-into-1 exhaust) and +1 size for my main jet (bump up one size for every 3 slow jet increases) which from my research would leave me with #120 slow jets and #42 main jets.

Correct me if I’m wrong, of course
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Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #153 on: May 25, 2018, 04:16:00 PM »
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Offline calj737

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Re: 71 CB500 Restomod - Tuning Time
« Reply #154 on: May 25, 2018, 04:19:20 PM »
Quote from: Scramps on May 25, 2018, 04:12:46 PM
Going by the jetting guide from the tech forums, I figure that I’m going to need +4 sizes for the slow jet (pod filters, 4-into-1 exhaust) and +1 size for my main jet (bump up one size for every 3 slow jet increases) which from my research would leave me with #120 slow jets and #42 main jets.

Correct me if I’m wrong, of course
You are wrong. Now way will you be able to run, or need, 120s. Probably 105s will be good, stock slows, and might move the needle clip down 1 notch to the middle position.

You’ll fine tune with the air screws and some plug chops.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #155 on: May 25, 2018, 04:22:55 PM »
Thank you Cal, I thought that it seemed like a drastic increase. I'm very much still learning when it comes to carburetors

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Offline calj737

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Re: 71 CB500 Restomod - Tuning Time
« Reply #156 on: May 25, 2018, 05:48:34 PM »
Your calculations were off: 100, 105, 107.5, 110. 120 is 750 size jets.

I can't see your bike with a stock motor, needing more than 105s with a 4:1 and pods. If you do run pods, you really (really) want to use the quality K&N pods and not the conical units that DCC sells. Yeah, they cost $150, but they make a difference in getting the A/F mixture rideable.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #157 on: May 25, 2018, 06:10:00 PM »
If I want this bike to look, sound, and ride well, I’m going to have to re-evaluate several items. I definitely need new exhaust. The pod filters I’m using now are placeholders, I’d MUCH prefer to have a stock air box. K&N pods would be nice too. Beyond that, though, I’m pretty happy with how it’s shaking out so far
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Offline DurangoCB

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Re: 71 CB500 Restomod - Tuning Time
« Reply #158 on: May 25, 2018, 07:03:38 PM »
Do you need a stock air box?  I’ll be selling mine in the next couple days.
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1978 CX500- next in line

Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #159 on: May 25, 2018, 07:59:10 PM »
What kind of shape is it in? Good boots?
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Offline DurangoCB

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Re: 71 CB500 Restomod - Tuning Time
« Reply #160 on: May 25, 2018, 10:17:09 PM »
Excellent condition. One boot is cracked though. I will get photos and post the ad tomorrow.
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1978 CX500- next in line

Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #161 on: May 27, 2018, 05:57:24 AM »
Felt like taking a picture as I left the garage late last night.

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Offline calj737

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Re: 71 CB500 Restomod - Tuning Time
« Reply #162 on: May 27, 2018, 09:54:53 AM »
I'm no expert, but something doesn't look quite right there...  ??? ;)
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #163 on: May 27, 2018, 01:52:27 PM »
Tread’s a little low on that front tire.
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Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #164 on: May 27, 2018, 02:15:47 PM »
I pulled my carbs apart again today. Moved those needle clips down to the center slot and pulled the main jets in preparation for the 105s that I ordered.

This also gave me a chance to replace the chunky rubber fuel lines with OEM Honda stuff, and double check the cleanliness of everything.

I also installed my seat hinge, pulled the tank to prep it for round 3 (4?) of repainting. I also scratched up my side covers really bad and am going to have to use body filler to resurface them at this point, which sucks.

I’m going to go with a more orangey yellow, this yellow is too bright.

The bike was gold originally, I’ve determined. So that’s fun.
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Offline DurangoCB

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Re: 71 CB500 Restomod - Tuning Time
« Reply #165 on: May 27, 2018, 03:02:54 PM »
My 71 was originallythe good color, too, as evidenced by the overspray on the underside of the tank.
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Offline Scramps

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Re: 71 CB500 Restomod - Tuning Time
« Reply #166 on: May 30, 2018, 07:33:43 AM »
I should have known that those cheap switches were going to be trouble. They already messed me up on the mixed up wires on the kill switch and starter button, now the lighting is all screwed up.

First my lights weren’t coming on with the switch, I fixed that, but now my right turn signal doesn’t work. It did work before I made the alterations for the head and tail lights, but not after, so I’m guessing that some wires got squished together during reassembly.

Either way, I’m on the hunt for some better switches now. It’d be nice to find some used ones from a salvage place, anything from a Honda bike of any model year would be better than what I’ve got now
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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #167 on: June 01, 2018, 08:28:37 AM »
Got my jets, put everything back together, too rich. Back to the drawing board!
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Offline calj737

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Re: 71 CB500 Restomod
« Reply #168 on: June 01, 2018, 08:34:41 AM »
Quote from: Scramps on June 01, 2018, 08:28:37 AM
Got my jets, put everything back together, too rich. Back to the drawing board!
Where are you needles and screws set? Are you DEAD CERTAIN your emulsion tubes are fully clean and clear? Fresh plugs please before the next test... Warm engine. Fresh plugs, no choke, no throttle blips. Run 3 minutes with a box fan in front. Kill it and pull the plugs. Post a picture with them in sequence.
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Scramps

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Re: 71 CB500 Restomod
« Reply #169 on: June 01, 2018, 08:49:06 AM »
Quote from: calj737 on June 01, 2018, 08:34:41 AM
Quote from: Scramps on June 01, 2018, 08:28:37 AM
Got my jets, put everything back together, too rich. Back to the drawing board!
Where are you needles and screws set? Are you DEAD CERTAIN your emulsion tubes are fully clean and clear? Fresh plugs please before the next test... Warm engine. Fresh plugs, no choke, no throttle blips. Run 3 minutes with a box fan in front. Kill it and pull the plugs. Post a picture with them in sequence.


Needles in the center position, started with screws at 1 3/8 out, then adjusted out 1/4 turn at a time each time it wouldn’t fire, not sure where they ended up. I am not dead certain about the emulsion tubes, I will pull them this evening and verify cleanliness.

I will buy some more plugs and do that test and we shall see how the old girl fares!

Whoosh!
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Offline DurangoCB

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Re: 71 CB500 Restomod
« Reply #170 on: June 01, 2018, 08:51:17 AM »
Do what cal says. You need to be very systematic. A combustion engine is a fairly simple machine... it’s the little things you overlook and assumptions you may not even realize you’re making that complicate it. Get basic!
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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #171 on: June 01, 2018, 09:22:14 AM »
I appreciate the instructions, absolutely!

I was farting around in the garage last night getting all hot and sweaty and frustrated. Reading the technical documentation and the information just stopped being absorbed at a certain point.

I’ll have a fresh go at it and get it figured out. Thanks!
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Offline calj737

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Re: 71 CB500 Restomod
« Reply #172 on: June 01, 2018, 10:13:00 AM »
Quote from: Scramps on June 01, 2018, 09:22:14 AM
I appreciate the instructions, absolutely!

I was farting around in the garage last night getting all hot and sweaty and frustrated. Reading the technical documentation and the information just stopped being absorbed at a certain point.

I’ll have a fresh go at it and get it figured out. Thanks!
Goslings Black Seal rum and Pineapple helps immensely. Trust me, I wouldn’t lie  ::)
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Scramps

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Re: 71 CB500 Restomod
« Reply #173 on: June 01, 2018, 02:43:45 PM »


Lol emulsion tube filth
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Offline calj737

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Re: 71 CB500 Restomod
« Reply #174 on: June 01, 2018, 02:52:40 PM »
Oops  :o
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis
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