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Messages - gtmdriver

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CB350/400 / Re: pods or oem air filter
« on: October 03, 2018, 09:32:05 AM »
What Julie said.

Another drawback with pod filters is having to protect them from water ingress when you wash the bike.

Misc / Open / Re: Engine paint what primer??
« on: September 24, 2018, 12:14:43 PM »
I used POR15 engine enamel on my Moto Guzzi engine after cleaning it and preparing it with POR15 Metal Ready/Prep.

It stayed on when petrol and even battery acid got spilled on it.

CB350/400 / Re: Rear shock lower mounts
« on: September 17, 2018, 04:18:36 PM »
I thought all 350/400 rear shocks had a clevis bottom and Eyed top fittings,

They do as far as I know.

CB350/400 / Re: Removing 'Preserve Nature' Emblem/sticker
« on: August 26, 2018, 04:26:12 PM »
A hair dryer will soften the adhesive making it easier to remove the sticker.

CB350/400 / Re: fuel
« on: July 17, 2018, 10:00:05 AM »
What you do need to be wary of is the not the octane rating but the presence of Ethanol in the fuel.

Currently most of the petrol supplied in the UK is E5 and contains 5% ethanol. It is due to move to E10 in the near future. Unlike most other countries there is no requirement in the UK to show the % or even the presence of ethanol in petrol so most people are unaware that it is even there.

Some of the premium grades are ethanol free but this also varies depending on whereabouts you are in the UK.

The ethanol itself will attack the older types of flexible fuel lines but it is also hygroscopic and will absorb water which can cause corrosion of the metallic components in the fuel system. The ethanol can also oxidise on standing to form ethanoic (acetic) acid which is also corrosive and can damage carburettor bodies and brass jets.

Here's a list of biofuel safe materials.

If you cannot be sure of the fuel supply the best thing you can do is to use a fuel additive such as Frost Ethomix and replace all the rubber hoses with biofuel safe materials.

CB350/400 / Re: rear shocks length
« on: July 10, 2018, 02:52:37 PM »
As you have found most after market rear dampers with the lower forked fitting are not quite the correct length.

The only ones that are exactly as needed are the Tec shocks.

CB750 / Re: Braided hoses
« on: July 02, 2018, 08:37:52 PM »
On my CB350F I had a 2 piece  system made up.

The upper section (master cylinder to brake light union) was a direct replacement but the lower section is a single flexible hose with no metal piping involved.

Misc / Open / Re: Honda design failures.
« on: June 30, 2018, 07:58:40 AM »
They went through a bad time with cam chain tensioners too but on balance I think it is fair to say that Honda designers got a lot more right than they got wrong.

CB750 / Re: Thread pitch?
« on: June 08, 2018, 02:46:05 PM »
Yes if you insist :-)

These are for a Honda CB350F. You will need to check the lengths against your own bike.

Upper Hose

Lower Hose

The second schematic shows the dimensions for a direct replacement but the best option is the alternative hose shown in the lower part of the diagram. It lines up nicely with all the original hose carriers.

CB750 / Re: Thread pitch?
« on: June 07, 2018, 07:53:35 PM »
Furore cars will need the dimensions.

I have the schematics and if you PM me with your email I will send them over to you.

CB750 / Re: Brake pads and shoes
« on: June 07, 2018, 08:52:38 AM »
I've always stuck with EBC Organic pads and shoes.

You can fit sintered pads if you wish but the are more abrasive on the front disc.

CB750 / Re: Thread pitch?
« on: June 06, 2018, 08:47:54 PM »

CB750 / Re: Thread pitch?
« on: June 06, 2018, 02:21:04 PM »
I’m not sure what pitch it is but i know its the same size as a std banjo bolt if that helps...

It it simple to get braided brake hoses made up to go straight into the caliper without  using the standard metal pipe bit?

I've done exactly that too.

A single hose that goes from the brake light switch union to the caliper with an angled male fitting at the caliper end.

CB750 / Re: Thread pitch?
« on: June 04, 2018, 08:57:41 PM »
I think early Honda brake fittings are M10 x 1.25mm pitch.

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