Honda-SOHC

Its starting to looks fabulous Yozzer, nice one. Don't take it out in the rain though or you will be on the Solvol Autosol for the rest of your life.

Chain and sprockets arrived, a week late but they eventually did.
I put on the rear sprocket and new chain but kept the old front sprocket as I am not sure how to replace it.
After having completed the job I have realised that the chain is very loose, i pushed the wheel to the very end but still way too lose.

Shall I cut some links off the chain or..

thanks
el__burro

Same here. Just had a chain and sprocket kit off eBay from M&P for the CB750F2 
http://www.ebay.co.uk/itm/HONDA-CB750-F2-1977-SOHC-O-RING-CHAIN-AND-SPROCKET-KIT-/271025338194? 

Fitted it last weekend and like yours the adjustment is past half way. So tomorrows job is to remove the required links and put in a soft rivet link. Don't like split links on 630 chain, although I don't know of any problems so I'm probably being way over cautious. Was always told from my teenage years that 65hp was the limit for split links (this may have been true of 70/80s chains). Its probably bullshit but what price your crankcases if it breaks.

Not even going to bother with the ringing M&P as they will only say "we've sold thousands and this is the first report of a problem". That will just piss me off. So out with the link remover again.

Yes good point Norniron.

With 5% Ethanol fuels you lose about 1 octane point on Ethanol removal. But the BP Regular was only half that, so don't think 0.5 of an octane point is too bothersome. If you start with Super you would be fine (but that was found to be Ethanol free anyway).

The big problem wont start until the EU force the introduction of E10 on January 1st 2017. That's when the Ethanil kit will probably be required, as Ethanol free petrol at that point will mainly be unavailable. That's of course if the EU does get its way.

Mrs Royhall is doing a degree in Environmental Studies and is going to do the Ethanol thing as a dissertation, so I may end up being some geeky expert on this subject. Can you imagine the people I could bore to death with this.

There has been a few threads recently about Ethanol in Petrol ruining the fuel systems on classics like ours. It was suggested by MarkCR750 to try the Ethanil kit as advertised on eBay www.ebay.co.uk/itm/ETHANIL-STANDARD-KIT-remove-ethanol-from-petrol-yourself-/151831596991?hash=item2359de4fbf so I decided to give it a go. This thread is about the results of that.

The kit arrived quickly all in one large box. The kit consists of a 20ltr separator tank, a measuring container, and a large funnel.
The first step is to fill the tank with 18ltrs of standard pump petrol.

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The measuring bottle is then filled with about 2ltrs of plain tap water to the clearly marked line.

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The water is then added to the petrol in the tank and the decanting valve is fastened down tightly.
Now comes the workout. The tank needs to be shaken for about 2 minutes to thoroughly mix the contents.
The tank is then placed on a bench with the nozzle facing down.

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The mix is then left to stand for 2 to 3 hours whilst the water absorbs most of the Ethanol and settles at the bottom of the tank.
When this is complete, a "phase" line can be seen at the bottom of the tank. This is the separation of the water and petrol. The tank needs to be tilted forwards slightly to ensure all the water can be removed from the tank. Using the decanting valve, the water mix is carefully drained back into the measuring container until the first tiny measure of petrol appears. Set the container on a level surface and read off the level, this will be higher than the water level at the start.

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The difference in level is due to the Ethanol content absorbed into the water. It can be read off the scale as a percentage. In this case its about 2.4%, that is the Ethanol content. The petrol in the tank is now virtually Ethanol free and can be put back into the bike.

The kit works very well at removing the Ethanol, however it is a real messy faff to do. Also I have breathed in so much Benzene doing this that I probably have cancer now. So I have been getting a few samples in a couple of petrol cans and testing them with interesting results.

BP Regular Unleaded is about 2.4%
BP Ultimate Super Unleaded is Ethanol free
Morrisons cheap Regular Unleaded is about 4.1%

So there you have it, until January 2017 just use BP Ultimate Super Unleaded. These results were in the West of Lancashire, the Ethanol content may vary by region.

I've had three liners fail, compared to the mess it makes I'd rather remove the rust,  or even just collect rust in a filter.

Fair point.

Sent from my GT-I9305 using Tapatalk

As I am struggling to find a CB350F petrol tap I am thinking I may be able to convert a CB750 tap to single side outlet. Quick question, are the two outlets (as in the picture) connected together or are they normal and reserve?


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Cheers for that and welcome to the forum. I assume from the name you also have a Suzuki. That's exactly how mine has gone back.