Author Topic: CB 750 AMEN Chopper (Read 23828 times)

Medyo Bastos · « **Reply #100 on:** January 01, 2017, 06:14:51 PM »

Not necessarily, I have seen them with and without... check close to the sidestand

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Anglo · « **Reply #101 on:** January 01, 2017, 08:26:52 PM »

I've spent about 8 hours stripping paint off the frame with a corded dril... I don't need to check, I know theres no identification numbers on it anywhere

Anglo · « **Reply #102 on:** January 01, 2017, 10:42:18 PM »

Cheeky update on the frame, spent another half hour sanding down the frame with 120 grit sandpaper, getting into the nooks and crannies. Then I set up my painting stand. I'll be honest, I spared no expense on this. Full plastic sheeting up and down the garage, a thousand dollar painting jack to winch the frame up, advanced ventilation machinery and air purifiers, full body suit and gas mask...

Tadaa

Okay so perhaps its wasn't the best set up, but I don't have a lot of money and this let me get in at most angles (and before you tell me off yes I plugged the headset before I started)
I'm going to put another coat on in a minute, but even the base-coat makes it look so much nicer!

Photo doesn't do it justice! 2 coats of primer then 4 coats of whatever paintI'm putting on top. Any advice on paints? I was planning on using Hammerite, but I know some of you guys have a grudge about hand painting the frame. I can get a compressor at a stretch, but if not that'd be great, Thoughts?

Terry in Australia · « **Reply #103 on:** January 02, 2017, 12:19:37 AM »

Rattle can paint is fine mate, I couldn't get my K1's frame powdercoated one year (they'd closed for Christmas) so I painted it with Epoxy Enamel (gloss black) and it set as hard as baked enamel, looked great, and cost $26 for 2 cans of paint. I'd be more worried about the cold though, most paints don't cure well in freezing conditions, can you do it in a heated room inside? Cheers, Terry.

martin99 · « **Reply #104 on:** January 02, 2017, 01:02:06 AM »

Yes I'd be a bit worried about spraying in the cold too. Even Hammerite (no primer needed) cures better in warmer conditions. Have you got any threaded holes in that frame? If so mask them now (just a rolled-up tube of paper will do) before you fill them with paint.

stikman · « **Reply #105 on:** January 02, 2017, 10:34:18 AM »

You could use a heat gun between coats to help the paint flash off. Or perhaps setup an infrared heater on it between coats. And leave a bit more time between coats as well. I'd go ahead with it. It's just Vancouver, not really the great white north.

Terry in Australia · « **Reply #106 on:** January 02, 2017, 01:31:46 PM »

Hmmnn, I wouldn't, I'd take it indoors and do it in nice warm dry air. Unlike using a compressor and a spray gun, rattle can's (especially when using a heavier paint, like an epoxy enamel) don't produce a lot of overspray that will travel some distance and coat everything in it's path, and it will cure so much better in a warm dry room.

Read the instructions on the paint can, they're put there by experts, for a very good reason. Cheers, Terry.

754 · « **Reply #107 on:** January 02, 2017, 02:06:28 PM »

True that, hard enough to get rattlecan to look like much, let alone, bend the recommendations and invite failure.... Get primer on though to ward off the rust..

Anglo · « **Reply #108 on:** January 02, 2017, 06:59:02 PM »

I've sanded the frame to bare metal and put on 2 coats of primer 754, any rust thats on it has earned its right to stay...

Joking aside I've decided I'm not going to half ass this, my plan is next payday to get some fairly thick sheet plastic and duct-tape up a booth in the middle of the garage. Then I've got a friends space heater I can put in there to keep it relatively toasty. Suffice the booth is air tight (Yes I will wear a mask when I'm doing the painting) It should hold heat fairly well? Next payday is on the 11th, I'll keep you guys updated.

Terry in Australia · « **Reply #109 on:** January 03, 2017, 03:28:34 AM »

Good job mate, don't forget to breathe............

Anglo · « **Reply #110 on:** January 06, 2017, 09:03:58 AM »

So I heard back from the shop I left my cylinders with...

I mean how does that look for you guys? I guess that would be everything to make it run good again, but thats not really what I want. for a start I've already sourced and budgeted new pistons from elsewhere. You think I can just ask them for a piston bore and write off the rest? Cause I'll be honest... I don't have $750 right now, nor am I gonna get it any time soon. Bicycle repairs dry up this time of year $:-\$

In terms of the cam shaft and valves and that, well I've got 2 spare engines. Is it worth cracking those 2 open and looking at the valves there?

stikman · « **Reply #111 on:** January 06, 2017, 09:29:41 AM »

Take the cylinders and new pistons to a machine shop that will just bore and hone to your provided specs. You can pull the springs off the head yourself and lap the valves. Other than that it's just putting it back together with a new gasket and seals kit. The machine work should preferably cost under $300. Being in a main center, you should have your pick of the bunch. Call around and ask for prices on just an inline 4 bore and hone job.

754 · « **Reply #112 on:** January 06, 2017, 01:35:47 PM »

Try Mongoose.. That is way too high imo..
50 bux for shop supplies? Sounds more like two pizzas for the guys, lets get the customer to pay for it..
Just be patient....KMS has cheapo bore guages for 60 bux right now..

Terry in Australia · « **Reply #113 on:** January 06, 2017, 06:08:21 PM »

Well over here that work would cost twice as much and to quote my old operations manager, "it costs what it costs" mate, get it done properly for $750, and don't touch it again, or half-arse it and hope for the best. I understand your financial situation, so half-arseing it might be your only option, just be prepared to pull the engine again if something breaks. Cheers, Terry.

754 · « **Reply #114 on:** January 06, 2017, 07:29:04 PM »

Terry would you pay 100 bux to get your cylinder head skimmed ?
I got a buddy charges 50 bux a pass, thought that was high..

disco · « **Reply #115 on:** January 06, 2017, 08:32:31 PM »

As Cal says different markets demand different prices. In Sydney where everything is expensive, my local machine shop guy gave me a ball park price "about $100 per cylinder" to fit my 'Cruizin Image' 836 kit. He said to go from 61mm to 65mm involves quite a few passes on the rig. So I'm up for at least $400. I don't like it, but it is what it is. Hopefully the wallet pain will be replaced by the smiles on the road!

754 · « **Reply #116 on:** January 06, 2017, 08:41:35 PM »

836 is multiple passes while...boring way more. Money... To do than a regular rebore...

Anglo · « **Reply #117 on:** January 06, 2017, 09:28:50 PM »

Boring to 836 isn't really on my radar for the time being. Its a little more pricey than I want and I don't want to do any big mods to the engine. Having it run would be a great start!

I see where you're coming from Terry, I'm down to do this properly. But I'm not above shopping around for the best price.

I'm gonna collect the cylinders over the next few days when I have some way of getting them home.

Keep on discussing guys, whatever the agreed outcome it'll be a while till I can afford it.

In other news, the Vin plate just turned up

Happy Days

Terry in Australia · « **Reply #118 on:** January 06, 2017, 10:09:16 PM »

Quote from: 754 on January 06, 2017, 07:29:04 PM

Terry would you pay 100 bux to get your cylinder head skimmed ?
I got a buddy charges 50 bux a pass, thought that was high..

Yeah mate, it'd cost more than $100 to get a head skimmed here. Machine shops charge $100(+) per hour, and we don't have as many to choose from. I missed out on a free surface grinder in 2015 that ended up in the scrap metal bin, it could have been very handy alongside my boring bar. Oh well...........

Terry in Australia · « **Reply #119 on:** January 06, 2017, 10:19:48 PM »

Quote from: disco on January 06, 2017, 08:32:31 PM

As Cal says different markets demand different prices. In Sydney where everything is expensive, my local machine shop guy gave me a ball park price "about $100 per cylinder" to fit my 'Cruizin Image' 836 kit. He said to go from 61mm to 65mm involves quite a few passes on the rig. So I'm up for at least $400. I don't like it, but it is what it is. Hopefully the wallet pain will be replaced by the smiles on the road!

Yep, my old Repco boring bar does a fantastic job, but .010" passes (0.254mm) means around 20 passes per cylinder, so a couple of hours on the bar. I've tried roughing each cylinder out on my lathe and then installing them back in the block for just a couple of finishing passes, but the horrible ringing noise alone puts me off. $100 per cylinder is the standard charge at bike shops around here. If your bike is running fine as it is, don't bother with the 836cc kit on it's own, you won't notice any real difference from a 100cc capacity increase. Cheers, Terry.

754 · « **Reply #120 on:** January 06, 2017, 10:31:17 PM »

Just how long do you think a head takes ?? 20-25 minutes.
I have done quite a few HD heads on my mill.
I think we discussed this before , but not sure why your boring bar cant take .090 thou in a pass..

Terry in Australia · « **Reply #121 on:** January 07, 2017, 01:12:50 AM »

Quote from: 754 on January 06, 2017, 10:31:17 PM

Just howclong do you think a head takes ?? 20-25 minutes.
I have done quite a few HD heads on my mill.
I think we discussed this before , but nit sure why your boring bar cant take .090 thou in a pass..

No, I don't remember a conversation about boring bars, but mine is only a small Repco/Van Norman unit that I "inherited" from my cousin who had it in his bike shop from the 1970's. Because most bikes run coated cylinders nowadays no-one is going to invest in a bigger, faster boring bar, because they'll never get a return on their investment.

Even with the low exchange rate, salaries here are higher than the US/Canada, (we don't have any Mexicans to keep labour prices down I guess?) and one US Navy officer I was chatting to before Christmas told me that Oz is the most expensive country in the G20 to live in, and he'd lived in a few. Oh well, it costs what it costs..........

754 · « **Reply #122 on:** January 07, 2017, 11:02:20 AM »

Yeah it cost what it costs.. But mist charge less than that..around here..
I would like to see the cam , they dont always wear..
It looks to me more like crank up the price we dont care if we get it..
Mongoose is like 30 miles or nearer to him , do only motorcycles watercraft dirt toys type of work for 30 years or longer..

Mongoose machine has been around since 78..
Dealers for Rekluse (master distributor), Wiseco, LA Sleeve, and many others.
Plus they replate cylinders... How many places offer that up here..

754 · « **Reply #123 on:** January 07, 2017, 01:23:17 PM »

Was the cam still on the head ?
Usually all that is pulled off.. If its not it looks and is more work and they crank the price up..

BPellerine · « **Reply #124 on:** January 07, 2017, 06:38:27 PM »

last head I had resurfaced cost 50bux and he touched up the seats for me.bill

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Author Topic: CB 750 AMEN Chopper (Read 23828 times)