i boght a Honda H100 g reg what is the two stroke mix

richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

hi i bought a honda h100 g reg and the lad i got it off by passed the two stroke oil bottle as he said he doesn't trust them plus i only had the bike less than 24 hours and i took it to a mechanic and he said the bottom end is about to go, and the lad will not give me my money back.

so i need to know how much two stroke oil to put in a petrol can?

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

I'd plug the bottle back in it's more reliable than buggering about with premix, as proven by your knackered bottom end. Laughing

Full rebuild, plug the oil pump back in and live happily ever after.
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richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

i haven't got a bottle so i need the pre mix ive been told 125ml to 5 litres of fuel is that correct and also some one who had a H100 said his engine bottom end was always noisy as if it was about to blow but he said behind the fly wheel there is like a half moon thing and said the woodrif key was fucked and thats what was making the engine sound fucked does any body know what he is talking about?

any clues and answer if the premix ive been told is right!
cheers

MCN · Super Spammer Joined: 22 Jul 2015 Karma :

The half moon thing is the counterweight for the crank-shaft.
It helps balance 'out of balance forces' when the piston and rod and crank are turning.
If it is keyed onto the crankshaft then the piston and crank will all move at the same speed as the weight and visa-versa. If the key-way is worn/key missing then so you will get a rattle or knock.
It will be repairable if you can find an engineer's willing and able to repair the key-ways and cut a new key.
But if the end of the shaft and bore of the counter weight is worn too then the plot thickens.
But it too can be welded/sleeved and put back together again.
Low performance engine so should be fixable.
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Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

No 'correct' mixture for 2 squeak oil on the H100 as it always came with a pump.

125ml in 5L is 40:1 ratio. Anything from 25:1 to 50:1 seems to be the ratios people chose when they decide to run premix. 40:1 is probably as good as any!

If you run premix then the engine is getting virtually no oil when the throttle is closed, which can be an issue if you shut the throttle at high revs.

On the H100 the main bearings tend to be a weak point. They tend to whine when on their last legs.

Well worth hunting out a replacement oil tank, pump, etc.

All the best

Katy
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MCN · Super Spammer Joined: 22 Jul 2015 Karma :

https://www.cmsnl.com/honda-h100s-1986-g-england_model19494/partslist/E__0700.html#results
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

Polarbear · Super Spammer Joined: 24 Feb 2007 Karma :

Why oh why would you 'buy it off a lad' who had bypassed the 2 stroke tank unless you got it for something cheaper than a black jack.

Do you not think Mr. Honda, in his infinite wisdom and R&D budget worked out the most reliable way to introduce the correct quantity of 2 stroke to an engine. Rolling Eyes

The stupidity is strong in this one.
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MaybeGuy · Super Spammer Joined: 12 Mar 2007 Karma :

Roughly translates to : oil pump failed, seized it... So I ran it fucked on premix
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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

it was my mate who used to have a h100 who said it could be the woodrif key

richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

i bought it for £325

richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

the lad who sold me the bike said he didnt trust the oil tank and it was my mate who said it could be the woodrif key ?

Polarbear · Super Spammer Joined: 24 Feb 2007 Karma :

richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

its still got the two stroke tank there its just where does the pipe go to the carb as there is a place underneath the carb for a pipe and another on the right side of the carb?

richiemac · L Plate Warrior Joined: 04 Apr 2016 Karma :

if it is that key can the engine still fuck or not ?

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Well.

First thing I'd check is for play on the crank by removing the left hand engine cover, getting hold of the flywheel (the circular bit that rotates) and seeing if it moves up and down, side-to side or in and out. It should only rotate. Any play/clunking in another direction is bad news.

If the main bearings are screwed, there could be play here.
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