Author Topic: Magnetic oil plugs. (Read 3602 times)

Hotwheelbill · « **on:** January 16, 2018, 07:54:56 am »

I have read reviews of a lot of Magnetic Oil Plugs about the magnet falling out. I like this idea!

https://www.amazon.com/Mag-Plug-Magnetic-Drain-Filter/dp/B01NANQIMI/ref=sr_1_fkmr0_3?s=automotive&ie=UTF8&qid=1516117744&sr=1-3-fkmr0&keywords=Magnetic+Oil+Drain+Plug+cb750

ekpent · « **Reply #1 on:** January 16, 2018, 08:29:07 am »

Some guys here put magnets on their oil filters.

PeWe · « **Reply #2 on:** January 16, 2018, 09:50:48 am »

Most debris I have found in my CB750 oil pan was not magnetic.

Yamahawk · « **Reply #3 on:** January 16, 2018, 10:02:57 am »

Quote from: PeWe on January 16, 2018, 09:50:48 am

Most debris I have found in my CB750 oil pan was not magnetic.

...pop top from the '70's? They were aluminum...

Charlie

dave500 · « **Reply #4 on:** January 16, 2018, 04:23:41 pm »

pull apart some old hard drives and use the magnets,ive used em like this for ages,lets see a magnet plug gather this much debris after a rebore.

dave500 · « **Reply #5 on:** January 16, 2018, 04:25:21 pm »

then at each subsequent oil change you see the ferrous debris diminish,you insert the magnet end away from the motor in the housing.

seanbarney41 · « **Reply #6 on:** January 16, 2018, 05:10:51 pm »

Quote from: dave500 on January 16, 2018, 04:23:41 pm

pull apart some old hard drives and use the magnets,ive used em like this for ages,lets see a magnet plug gather this much debris after a rebore.

Dave, never ripped apart a hard drive before...how many magnets are in one?

dave500 · « **Reply #7 on:** January 16, 2018, 05:12:14 pm »

older ones have two,youll need a tiny torx driver set,theres always a screw hidden underneath a sticker.

seanbarney41 · « **Reply #8 on:** January 16, 2018, 05:17:28 pm »

torx drivers? screws?...b.f.hammer?

dave500 · « **Reply #9 on:** January 16, 2018, 05:24:17 pm »

all off the above!ever dropped a tiny screw or E clip in the grass?hover this cake tin lid covered in hard drive magnets over the area and youll find stuff you lost years ago,didnt find my virginity though!inside microwave ovens theres these big circular magnets.

seanbarney41 · « **Reply #10 on:** January 16, 2018, 05:32:41 pm »

Hey man!...keep that stuff well away from my vintage cassette tape collection!

Hotwheelbill · « **Reply #11 on:** January 17, 2018, 05:58:26 am »

Quote from: dave500 on January 16, 2018, 04:23:41 pm

pull apart some old hard drives and use the magnets,ive used em like this for ages,lets see a magnet plug gather this much debris after a rebore.

I always like to repurpose things. I use the plugs out of backup batterys for quick hook ups to charge or jump my bikes and mower.
Ill be doing this one. Thanks!

754 · « **Reply #12 on:** January 17, 2018, 07:36:23 pm »

Dave that oil looks like lots of aluminum in it.. powdered. .

dave500 · « **Reply #13 on:** January 17, 2018, 07:58:50 pm »

yep sure is 754 straight after a rebore,a lot of shmuck gets worn off,thats under an hour of riding.

PeWe · « **Reply #14 on:** January 18, 2018, 02:02:11 am »

That reminds me about changing oil at 50 km after a rebore, new rings/ pistons install. Another change 500 km later. The oil filter should stop all kind of debris, magnetic or not.

My last new piston install got oil changes even more frequent.

dave500 · « **Reply #15 on:** January 18, 2018, 02:44:08 am »

yeah pewe the magnets let you monitor the break in,sure the filters stop debris but a little extra free insurance?plus you wont clog a filter and have it activate the bypass!its too easy and free.

dave500 · « **Reply #16 on:** January 18, 2018, 02:55:19 am »

just out of interest that rebore is a few years old now and the motor hauls arse!its a first oversize 550,i don't spare it,my only thing is let em warm up a good 15 minutes as you ride before you cane em hard,i broke third gear in it a while back so swapped in my spare motor which is only a stripped and cleaned out but new internal chains engine,that hauls arse also,you ever seen this pewe?i also wore out the selector drum wheel?kinda mushroomed the face and flared it with a groove.

dave500 · « **Reply #17 on:** January 18, 2018, 03:04:37 am »

oops,was a long way from home with no third,the thing with magnet plugs is they only get what oil happens to be drifting past them,sure they'll catch the extra,filter housings have all the oil more or less pumping past them.

PeWe · « **Reply #18 on:** January 18, 2018, 03:32:27 am »

Fully agree about magnets to catch metal to see the grind-in. Pieces from gearbox hopefully never to be seen. That need a magnet in oil pan.
Too hard shiftdowns might cause bad things, gearbox as chains.

dave500 · « **Reply #19 on:** January 18, 2018, 03:42:50 am »

yeah I always blip the downshift if im going hard,makes it shift easier and the motors on the boil then for power,thats where you don't want soggy flat spots.

Deltarider · « **Reply #20 on:** January 18, 2018, 08:46:53 am »

Quote from: dave500 on January 18, 2018, 03:04:37 am

oops,was a long way from home with no third,the thing with magnet plugs is they only get what oil happens to be drifting past them,sure they'll catch the extra,filter housings have all the oil more or less pumping past them.

Dave, I wonder why I never had the 'typical' CB500 damages, like the broken clutch lifter push rod and the infamous 'third'. If I consult p.28 of the parts list for my model, http://www.honda4fun.com/pdf_parts_list/pdf_spac500/CB500-76/CB500-76_2.pdf I find, besides the push rod, two other parts, #6 and #13, that were not in the transmission of older models CB500. Could that explain it?

dave500 · « **Reply #21 on:** January 18, 2018, 02:09:12 pm »

that third and its mate are the only two gears shared in the 500 and 550 transmissions,very subtle changes in the dogs and hub bushings,in both these photos the 550 part is on the left and the 500 one on the right.

jaytee-nz · « **Reply #22 on:** January 18, 2018, 03:22:43 pm »

Dave - is there any typical wear or warning signs on the 500's 3rd gear to watch out for - just about to put my gearbox back in the cases and don't want to pull them apart again !

dave500 · « **Reply #23 on:** January 18, 2018, 06:53:53 pm »

if the dogs look rounded or their mating slots,also if the gear is wobbly on its shaft that can help it jump out of gear,mine was jumping out over a year and got worse and worse till nothing.

Dunk · « **Reply #24 on:** January 19, 2018, 09:01:01 am »

I also use HDD magnets on my filters, as well as a traditional magnetic plug with magnet glued on the end. Neat idea that different plug design.

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Author Topic: Magnetic oil plugs. (Read 3602 times)