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Post by earthman on Jan 20, 2018 12:03:07 GMT 1
For those guys who are running their bikes on premix, are you blanking off the oil pipe stub on the carbs? Have you found something readily available/suitable?
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Post by jon on Jan 20, 2018 12:22:12 GMT 1
I’d use a piece of the original oil pipe and block I by having some bungs turned to size in case you want to revert easily.
Failing that pull the brass spigots out and press in some new ones made of solid brass that are a bit flusher.
Jon
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Post by earthman on Jan 20, 2018 12:37:09 GMT 1
Thanks Jon,..I'll go with bungs in a bit of oil pipe, I just want to monitor/test the pump really, the left carb isn't being fed oil.
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Post by oldelsieboy on Jan 20, 2018 12:44:43 GMT 1
For those guys who are running their bikes on premix, are you blanking off the oil pipe stub on the carbs? Have you found something readily available/suitable? Link the stubs together with a piece of pipe. OEB |
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Post by dusty350 on Jan 20, 2018 15:59:12 GMT 1
I've linked the stubs with oil pipe in the past too. Also, a short bit of pipe with a small bolt pressed into the open end worked well too. You got an Lc now ? Dusty  |
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Post by earthman on Jan 20, 2018 17:59:59 GMT 1
Yes Dusty, I've got one now. I used a couple of short pieces of hose and plugged/sealed the ends, just checking that the oil is actually getting to the carbs, the left one particularly. Had the engine running for a few minutes on some premix until I saw some oil heading up those extended tubes that I placed inside the bottles.  |
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Post by rd350rob on Jan 22, 2018 9:03:28 GMT 1
Yup. Piece of original pipe with a great big self-tapper screwed in the end was what I did in the 80's......
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Post by earthman on Jan 22, 2018 10:08:34 GMT 1
Yup. Piece of original pipe with a great big self-tapper screwed in the end was what I did in the 80's...... Did you do that back in the 80's to permanently run the bike on premix then? I would never even thought of that back then to be honest, don't recall any of my mates running without the oil pump either. I wonder how many of these oil pumps actually failed back then?? |
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Post by rd350rob on Jan 22, 2018 11:07:53 GMT 1
Yup. Piece of original pipe with a great big self-tapper screwed in the end was what I did in the 80's...... Did you do that back in the 80's to permanently run the bike on premix then? I would never even thought of that back then to be honest, don't recall any of my mates running without the oil pump either. I wonder how many of these oil pumps actually failed back then?? Wasn't permanent. A couple of partial seizures on my mega-tuned barrels suggested the oil pump, so I premixed it until I could cobble enough cash together to get another one. Never did find out what was wrong with it; once I swapped them over it was fine, so binned the old one and got back to the important business of pulling wheelies and generally annoying the Bedfordshire Constabulary..... |
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Deleted
Deleted Member
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Post by Deleted on Jan 23, 2018 10:05:47 GMT 1
I find this to be an interesting thread. Please forgive me asking what may seem a stupid question, but my mechanical knowledge and skills are very much beginner level. I question why, if a bike is fitted with an autolube system would people choice to run premix, other than when the oil pump is faulty and needs repair/replacement?
Surely the autolube system must have been a technical innovation when introduced by manufacturers.
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Post by simon998 on Jan 23, 2018 10:10:20 GMT 1
Usually on the off chance that the pump fails on tuned machines or the pump isnt supplying enough oil. Back in the day I whipped mine off the 50cc because someone in the pub told me it sapped power from the engine and I would have done anything to get it that little bit faster.
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Post by rd350rob on Jan 23, 2018 12:31:05 GMT 1
Usually on the off chance that the pump fails on tuned machines or the pump isnt supplying enough oil. Back in the day I whipped mine off the 50cc because someone in the pub told me it sapped power from the engine and I would have done anything to get it that little bit faster. haha +1 on that. I ripped the fan off my Cortina 2.0 engine once (it had a solidly-mounted one as opposed to the later hydrostatic ones) and it was DEFO faster. Heated up a bit round town, though.
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Post by ypvs400 on Jan 23, 2018 12:57:41 GMT 1
Solder every time.
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doggs
L plate rider.
Posts: 40 
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Post by doggs on Jan 23, 2018 17:28:40 GMT 1
in the 80s on my proddy bike i used a ball bearing pushed into the original oil delivery line which i left attached to the carb - not sure of the size but made sure it was a snug fit - at the pump end i just removed the nylon drive gear from the casing and left the pump in place
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Post by capriman on Jan 26, 2018 12:15:18 GMT 1
I've linked the stubs with oil pipe in the past too. Also, a short bit of pipe with a small bolt pressed into the open end worked well too. You got an Lc now ? Dusty I use the short tube with small bolts in the ends method. works well with no problems. |
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