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Post by 4l04ever on Feb 23, 2023 0:21:55 GMT 1
Does anyone have the length, ID and OD for each of the 3 oil pump pipes?
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Post by 4l04ever on Feb 23, 2023 11:15:32 GMT 1
Sizes on my pump body are :-
Inlet 6.06mm OD, 3.18mm ID
Outlets are 2mm ID and 3.6mm OD
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Post by geoffers997 on Feb 23, 2023 20:08:07 GMT 1
FWIW I bought original Yamaha pipe off of suzukiexpert on eBay. Cheap as chips
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Post by chrisg on Feb 23, 2023 21:24:58 GMT 1
There is a debate on the AC site at the moment (clear pipes and bubbles etc.....). I would definitely use gen. yam ones. They are not that expensive.
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Post by blaine on Feb 23, 2023 21:36:58 GMT 1
Devil's advocate,
If the i.d. of the clear and the genuine is the same.
How do you verify the genuine pipe does not have air bubbles present?
On that basis I'm comfortable with clear as a replacement, and the clips to secure.👍
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Post by stusco on Feb 23, 2023 22:00:13 GMT 1
Devil's advocate, If the i.d. of the clear and the genuine is the same. How do you verify the genuine pipe does not have air bubbles present? On that basis I'm comfortable with clear as a replacement, and the clips to secure.👍 Arrow the oil pump God has tested and proved clear pipes to be risky, Im sure he will be along shortly to advise |
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Post by stusco on Feb 23, 2023 22:08:52 GMT 1
Pump to carb is 3mm id
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Post by muttsnuts on Feb 23, 2023 22:28:21 GMT 1
had several bikes in that have seized up because clear pipe was used, which when it got warm collapsed/kinked where it was bending out of the grommet next to the oil pump, I only ever use and sell genuine Yamaha oil pipe, its cheapo enough and does exactly what it says on the tin.
As for air bubbles, its not uncommon to see that, it can be for a number of reasons, but generally none are detrimental to the engine, unlike a collapsed/blocked oil feed pipe......
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Post by 4l04ever on Feb 23, 2023 22:53:20 GMT 1
I am going to use Tygon F-4040-A, which is yellow tinted but you can still see the oil. I would rather see what is going on than running blind with black pipes.
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Post by chrisg on Feb 23, 2023 22:57:33 GMT 1
I am going to use Tygon 4040A, which is yellow tinted but you can still see the oil. I would rather see what is going on than running blind with black pipes. JMHO you cant see oil flow in clear pipes. The flow is very slow. Even a static (no flow) would not be obvious. |
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Post by 4l04ever on Feb 23, 2023 23:03:38 GMT 1
There are usually the odd tiny bubbles, so you can see those. You can see if there is a giant airlock with no oil, and you can also see if the oil is running back down to the pump when left parked up (i.e. the non-return valves are faulty)
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Post by 4l04ever on Feb 23, 2023 23:04:48 GMT 1
I personally do not run oil pumps on my bikes, but this is for someone else who wanted one against my recommendation.
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Post by shaunthe2nd on Feb 23, 2023 23:15:13 GMT 1
I have this discussion with my gf all the time.
I buy boring practical shoes that I can walk miles in.
She buys shoes that look good, but she can only walk a few hundred yards in them, at best.
Our shoes cost about the same, although I only buy one pair a year. She doesn't disclose her figures in this respect, but I suspect a few more.
In my opinion, mine do what they are supposed to do, whilst hers are no good for walking she does have some other argument about what the benefits are but I struggle to understand the points made.
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Post by arrow on Feb 23, 2023 23:22:05 GMT 1
There are usually the odd tiny bubbles, so you can see those. You can see if there is a giant airlock with no oil, and you can also see if the oil is running back down to the pump when left parked up (i.e. the non-return valves are faulty) The oil can't run 'back down to the pump' because of the height of the oil in the tank. Passing check valves mask the issue of clear pipes of the wrong spec. changing size between cold and hot. Passing check valves fill the cases with oil. That can't happen one day, and then go the other way on a different day! |
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Post by wallcraft on Feb 23, 2023 23:23:56 GMT 1
Can of worms here Rob, I’ll get me popcorn 😁
I personally run a pump on my bike, but you can’t argue with premix, tempted to go back to it for peace of mind after my latest mishap!!
Mark.
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Post by wallcraft on Feb 23, 2023 23:27:47 GMT 1
Then Gary chimes in with his expert knowledge and advice and all is ok with my jittery nerves with my pump 👍
Mark
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Post by JonW on Feb 23, 2023 23:29:43 GMT 1
Hmm, people said all the time back in the day that they didnt trust pumps and ran premix. Usually on tuned bikes run on a budget lol. (yeah me n my mates)
The pumps have been proven to be fine and long lasting and we have Arrow to refresh them so now i have pumps on everything and im not doing other dodgy things teenagers do to bikes and seizing them.
Yam sold bikes with pumps and black hose round the world in their tens of thousand, RD/DT/RZ etc... maybe hundreds of thousands. If the pipe masked an issue then almost no one noticed?
Part of the issue with the clear pipe was swelling with heat/cold as Gary has said, giving the look of bubbles... which were actual bubbles... ie making their own problem.
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Post by arrow on Feb 23, 2023 23:30:53 GMT 1
Then Gary chimes in with his expert knowledge and advice and all is ok with my jittery nerves with my pump 👍 Mark What the issue with the pump Mark? You having problems with it? |
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Post by arrow on Feb 23, 2023 23:36:59 GMT 1
By the way, after the pumps get sent back the (pretty much) only two questions that get asked VERY OFTEN are concerning;
1, Pattern throttle cables.
2, Clear pipes.
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Post by wallcraft on Feb 23, 2023 23:52:52 GMT 1
Then Gary chimes in with his expert knowledge and advice and all is ok with my jittery nerves with my pump 👍 Mark What the issue with the pump Mark? You having problems with it? Thanks Gary, I had a partial seizure on the right hand of the 421. The piston showed scuff marks pretty much all around the piston circumference . At the time of the incident the bike was being absolutely canned so I just assumed it had overheated with marginal jetting, I have no evidence that it was anything to do with pump. It’s something I never really put my finger on. End of the day it’s a tuned motor with lots of variables. Mark |
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Post by tacky1 on Feb 23, 2023 23:54:20 GMT 1
I run pumps on every bike I ever owned and all I currently own and have never once had a problem, The only problems I seen were the owners, Running wrong or shit oil, Wrong pipes, Running out of oil and then filling up and not bleeding it right or bleeding it and then ripping off and not filling the feed lines.....
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Post by arrow on Feb 24, 2023 0:00:10 GMT 1
What the issue with the pump Mark? You having problems with it? Thanks Gary, I had a partial seizure on the right hand of the 421. The piston showed scuff marks pretty much all around the piston circumference . At the time of the incident the bike was being absolutely canned so I just assumed it had overheated with marginal jetting, I have no evidence that it was anything to do with pump. It’s something I never really put my finger on. End of the day it’s a tuned motor with lots of variables. Mark Sorry to hear that Mark. Are you checking the minimum stroke at the required intervals? |
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Post by wallcraft on Feb 24, 2023 0:13:23 GMT 1
Thanks Gary, I had a partial seizure on the right hand of the 421. The piston showed scuff marks pretty much all around the piston circumference . At the time of the incident the bike was being absolutely canned so I just assumed it had overheated with marginal jetting, I have no evidence that it was anything to do with pump. It’s something I never really put my finger on. End of the day it’s a tuned motor with lots of variables. Mark Sorry to hear that Mark. Are you checking the minimum stroke at the required intervals? Guilty, It’s done less than 1000 miles, but will check it. What’s the clearance again? |
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Post by jon on Feb 24, 2023 0:20:37 GMT 1
My only reason for perhaps not running a pump on my 385 was the want to use straight cut gears. I’ve chosen to run the pump over the gears.
Jon
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Post by arrow on Feb 24, 2023 0:25:03 GMT 1
Sorry to hear that Mark. Are you checking the minimum stroke at the required intervals? Guilty, It’s done less than 1000 miles, but will check it. What’s the clearance again? Sent you a WhatsApp message. The spec. is different on yours and I don't want anyone to interpret that wrongly. |
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Post by arrow on Feb 24, 2023 0:26:46 GMT 1
My only reason for perhaps not running a pump on my 385 was the want to use straight cut gears. I’ve chosen to run the pump over the gears. Jon Straight gears are made for driving the wormshaft, but its extra expense. |
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Post by jon on Feb 24, 2023 0:28:11 GMT 1
My only reason for perhaps not running a pump on my 385 was the want to use straight cut gears. I’ve chosen to run the pump over the gears. Jon Straight gears are made for driving the wormshaft, but its extra expense. Oh, I’ve never seen them. Have you a link? Jon |
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Post by arrow on Feb 24, 2023 0:30:47 GMT 1
No I haven't sorry. I did a few pumps and the customers told me about the gears. I just needed to know how many teeth on crank pinion and wormshaft driven gear. It was a while ago too.
I do however, remember one of the said gears being 14 tooth.
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Post by elsiefan on Feb 24, 2023 1:44:31 GMT 1
I personally do not run oil pumps on my bikes, but this is for someone else who wanted one against my recommendation. I did wonder if you were going over to the dark side, knowing your views on premix vs pumps. |
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Post by midlifecrisisrd on Feb 24, 2023 9:41:14 GMT 1
My only reason for perhaps not running a pump on my 385 was the want to use straight cut gears. I’ve chosen to run the pump over the gears. Jon Am I being daft here or is the oil pump not driven off the other little gear on the Crank end Not the straight cut primary Water pump too Steve |
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