Wednesday, June 15, 2011

Remove & Cap Plug Your Honda Express Scooter Stock Oil Pump


Honda express nc50 oil pump plug / cap how to video. This short video will take you through the process of removing your 1978 honda nc50 noped stock oil pump and plug it with a rubber stopper you can pickup at local Pep Boys for less than $3. It is way easier than custom making a cap that might not seal correctly. In the video I show you how to plug the stock pump because I am changing the original moped intake to a WEAK-ENDS honda express NC50 NA50 mikuni VM intake.



Let us know what other "how to" videos you would be interested in seeing. Taking requests now...

17 noped comments:

JR said...

Looks interesting but why would you want to do this? I don't understand the point.

sofasurfer said...

I am new to blogs and so I can only hope you recieve this message.
My problem is this...
To disassemble the shock, you unscrew the nut at the bottom of the fork, which holds the shock rod and spring in.
I did this and removed the rod and spring on one shock. However, on the second shock when I pull on the rod it is somehow being held in place by the spring. When I let go, it returns. When I push on the rod it does not move very far. When I turn the rod it turns with no effort as if nothing is holding it.
It seems as if the spring is locked inside the tube and the rod is locked onto the spring. Can you please advise me on how I might get this apart? The only possible solution I can think of is to lock the fork into a vice and pull the tube and spring until something give. Boo hoo...I just painted the fork.
I can be reached at bwphotos@early1900photos.com

adamdmacy said...

Great idea. For a long time I was under the impression that the 2 stroke oil lubed some of the parts in the engine. After looking at the service manual again I see it doesn't. Good-bye carb oil drip!

Andrew said...

I'm replacing my front drum brake pads and I'm having a lot of trouble getting the U-shaped spring in. Any advice?

Andrew said...

Do you know if wheels are compatible between '78 and '80?

Parker said...

just got an '80 Honda Express and tore the whole thing apart yesterday. It's in pretty good condition just needed cleaning and a few minor repairs. Just wanted to say THANK YOU for providing such a great resource!

2c608792-c4a2-11e1-8720-000bcdca4d7a said...

Dear JFK, my name is Neal. I sent you a message on facebook regarding my issue but am posting this as a backup. I am having trouble with my oil pump [it is not sending oil to the crankcase]. I pulled it apart, but my pump cannot be completely disassembled as shown in the helpful video. I blasted Sea Foam into it and that seemed to help for a few days but now the problem has resurfaced. I'd like to keep the oil pump on there but thinking about bypassing it. I don't have $200 to replace pump right now (and also no money to donate at the moment:[ )I am on a shoestring budget but would greatly appreciate advice or a call. THANK YOU THANK YOU

jfk said...

Hey Neal.

Sorry... been pretty busy, so I don't check Facebook much. Not really into Facebook. Anyways, you want to bypass the pump. No problem. In the video above I discribe the rubber plug I got at Pep Boys for like $3. Take out your oil pump... put in the plug. Now, drain your oil out of gas/oil tank. Put another plug in the oil OUT of the tank. Also, drain all the gasoline out of your tank.

What you will do now is called "premixing." Many other mopeds already do this. You mix the fuel and the oil together in a separate gas container. The mixture can be anywhere from 50:1 (50 parts gas to 1 oil) or 30:1 (30 parts gas to 1 part oil). Start with 50:1. If you Google "gas to oil ratio online calculator" I am sure you can find a website that will do the math for you. I usually make the mixture in 1-2 gallon container.

After your mixture is made, pour that into the GAS tank and run the moped. The oil will mix with the gas, burn in the engine and lubricate the piston, etc.

Hope that helps.

Take care,
-=JFK=-

2c608792-c4a2-11e1-8720-000bcdca4d7a said...

I figured as much, I've worked with two-strokes before but just find the whole pre-mix trivial. But thanks a bunch for such a quick response! I was just daydreaming that there was an alternate way to fix the problem, but since i do most of my gas filling at home anyways it shouldn't be a biggie. Also, while I'm here, since you modified the exhaust have you had any trouble with tuning? and also where can i get that lucas oil from (besides online)? And finally, JFK, I promise to donate at least 5$bucks or something asap since you've provided such an inexorably phenomenal job!! thanks again man (and yeah, i don't really like facebook either)

jfk said...

Neal,

Yeah, premix can be a pain. I too like the idea of just having it mix for me, but as you start to performance tune and make the ped go faster... I am not sure the oil pump is meant to work for such high RPMs when you get going 40+mph.

I have not had trouble with modified exhaust. I think it might even work better than some of the performance pipes. Plus, the performance pipes all need some cutting, welding, or bending to fit the NC50. Just make sure you re-seal the modified pipe after you're done really well. Any holes and it can throw off your tuning.

Hey, take care and shoot me some pictures of your moped and I'll post them!

binaryblock-moped AT yahoo DOT com

-=JFK=-

2c608792-c4a2-11e1-8720-000bcdca4d7a said...

I'll for sure send you some pics in a short while. BTW which weak ends model is that intake??? I apologize if i'm bombarding you with questions but this has now become my go-to site

jfk said...

https://www.treatland.tv/ProductDetails.asp?ProductCode=weak-ends-honda-express-intake

It's nice to feel important. :)

-=JFK=-

Angela Vuong said...

hi, have any updated on kickstart conversion, still confused about bending what spring to 180 degree to catch...thanks

Angela Vuong said...

hi, have any up to date videos on kick start conversion, especially the 180 degree bent spring, which spring? and i could not find the 3 minutes long video that for that spring? thanks

Brigadoon said...

Great video. Is the new intake necessary? Can you just use the stock and plug the hole?

Brandon

Nick Hopkins said...

Hey, just out of curiosity is there a way (at all) to replace the carb and continue using the oil pump?

1.) modify the stock intake to bolt up to a mikuni (or modify the WEAK-ENDS intake with an oil pump valve)
2.) same as above, and use a light premix
3.) same as first, and use an aftermarket oil pump

mitch lambord said...

Hi JFK, I am 14 am just bought a good condition Honda Express II from a garage sale. I would like to get your email or just off your website but I had some questions. First, do you need a battery for it to run? Second, can I put any 2-cycle oil in? And any other parts you think I should check before I try to start it? It is not seized at all so that's good I know.

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