Honda-SOHC

I don't have a reference for the tolerance on these smaller fours, but the 750 is given as 40mm (1.6 in) Hg.

I think there is a parameter of 2hg on the smaller fours, around the 22 mark, but it can be any number as long as the difference between carbs does not go out of the 2hg parameter, the air boxes and filters should be left on.

Quote from: kevski on December 09, 2016, 05:31:17 PM

Welcome to the forum, and does that rocket 3 have ray gun exhaust's?

Hi Kevski & K2-K6 -

Yes, the R3 has raygun exhausts. The bike is all stock except for a Tri-Spark electronic ignition. She thinks she's the Queen of the Garage and is certainly the most temperamental of the residents. It's interesting, sometimes, to compare the philosophies of England and Japan when it came to building motorcycles 

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Regards,

Always liked the look of them and the sound, looks like a nice K3 i used to have a 500K3, with regards to the UK bike industry bad management and a reluctance to update coupled alongside of a nobody can build better than us attitude killed our bike and car industries.

After deciding to come back to riding a SOHC Honda, i recently brought a 350f from the Triad small van centre in Brighton unseen but with many assurances it was a little gem with MOT and road ready, i find i am a little PI**ED off because after taking delivery and applying petrol to the tank i found that the fuel flowed freely out of the over flows straight onto the floor not really surprised by that as sometimes this happens with older bikes, i was told the mans macanac ( spelt like that because to call him a mechanic would be a travesty ) had fully serviced and re-furbed the carbs, so i was even more surprised to find the O rings around the jets and valve in each carb were completely shot, not been touched and along with copious amounts of crap in the bowls the floats set to around 30mm no amount of float setting was going to cure the flow, so i have re-furbed the carbs myself and now it runs really well, so anyhow i was also assured by this very nice man Neil or ( C**T ) as i now perceive him that the left fork leg oil-seal was weeping this weep actually was a-kin to the Torrey Canyon spewing it's cargo onto the floor of my garage when the front end was pushed down a couple of times, new stanchions seals and a now a decent re-furb done, now i have moved onto the caliper which also had a rebuild so out with the pads that had more chips taken out of them than mccain's send out of their factory in a week, i can see there is a new piston in there, relief i thought, so new pads in, checked today and there is brake fluid on the caliper bottom, so piston pumped out caliper removed  and oh my god enough wire wool to rub down the hull of the Queen Mary the seal was also new, upon removal i run a magnet around the inside and it ended up with a hairstyle like a 1970's Harlem Globetrotter and as for the seal groove or grooves as it has now, this sort of work beggars belief, so new parts for this have now been ordered, still has a sticky clutch which will be addressed as soon as possible, so do not buy from this Man, the bike has not done a single mile since he had it MOT'd by K.C.Carter of Vehicle test station V110128, Unit 3 Freemans Road, Portslade Brighton, BN41 1SL, it really is my tough luck for buying without a long trip to see the bike but it also shows how far people will go to make a buck without any consideration for other peoples safety.

Quote from: Tomb on December 07, 2016, 12:19:04 PM

Not saying the opinions about Vaseline on carb inlet rubbers are wrong, but whenever I read about how its petroleum based therefore not good on carb rubbers I have to chuckle. These are the carb rubbers, the thing that the petrol goes through.

I totally get what you're saying, but petrol vapour is sucked through them with vast quantities of air, and chances are with petrol's evaporation rate, they are not in very much contact with petrol, whereas a coating of Vaseline will be permanently in contact with the rubbers, and long term it may be an issue. Given the ludicrous cost of them to start with, my theory is to avoid damaging them as much as possible!

Blonde moment.

There is petrol vapour going through these constantly and whats in petrol vapour (PETROL) thus ensuring petrol is in contact with the rubber for as long as they are installed on the bike,so a light smear of vaseline will have zero effect.

Silicone grease should not be used where there is a chance of it being taken into the engine as metal to metal moving parts are prone to increased wear due to the silicone.

Good stuff full fat coca-cola, my older sister used to work in a garage and to get the oil off of the forecourt they used  full fat coca-cola and it does work, but never heard of it being used for bolt removal, will keep this one in the memory bank.

On my 1972 350f, new to me i am finding it impossible to get neutral from 1st i can get it with difficulty from 2nd, i have adjusted the clutch, changed oil and filter  using the correct grade as per the manual, now when i put the bike on the centre stand and the back wheel is spinning it slips into neutral easily, if i stop the wheel with my foot it won't go into to neutral,i can go up and down the box while on the stand no problems but as soon as the wheels are on the ground i can select first but cannot get it back into neutral it wont budge without doing it by hand then it pops up to second, the bike had not been started for many years and initially the clutch plates were stuck together but are now free, any ideas on the problem before i open up the whole motor.

Nice to have a member on here that really knows plating. Thanks Kevski.

Sent from my Nexus 6 using Tapatalk

Roy, I am a former metalurgical chemist and plate line oppo, so I know a little, enough to get me by, it's a bit of a minefield, but in this game poor prep shows up massively on the finished job, and these clamps are not worth the time involved to re-chrome, the cost of the prep way outweighs the cost of new.

The bike running for the first time in many years, also sporting a genuine Honda tank, a bit lumpy at first but smoothed out a bit, carb balancing next .