Honda Express Engine Cylinder Head Gasket | How To Replace

How to replace a cylinder head gasket on a Honda Express moped is brought to us by Bakirkwold. He is a fellow honda nc50 scooter enthusiast and has brought us such videos as kick-start conversion on honda scooter express and muffler performance tuning on honda express.

In this video Bakirkwold has previously removed cylinder head for cleaning and replacement of new piston. He broke the seal/gasket when removing the honda noped head. When he put it back together, unfortunately, he used Permatex Ultrablack Gasket Maker (<= DO NOT USE). Basically, the point of the video is that he used the Permatex gasket maker and due to temperature, friction, application, or who knows... it didn't seal properly. His nc 50 moped was loosing compression and dropping his honda moped top speed. So, this time around Bakirkwold purchased a genuine honda express cylinder head gasket part from local parts store for only $5.99. Well worth the money and much less headache.

Check out all his videos. He is a true credit to the Honda Express moped race!

Honda Express Video Commercial | 1980 Honda Express

You're about to see a 1980 import that can get 100 miles to the gallon. It has got automatic transmission, air conditioning, and more head-room than a Rolls Royce.

And for all the practical reasons you should buy it, the best reason is impractical. It could just be the most fun you've ever had! The 1980 Honda Express.

Honda Express nc 50 Transmission Oil - What Should I Use?

As printed in the 1980 Honda NC50 ('77-'82) Express NA50 Express II ('79-'81) Shop Manual by American Honda Motor Co. Page 26-1, you should use 10W-40 Motor Oil.

The Honda Scooter nc 50 has a Transmission Oil Capacity of 0.75 lit. (0.79 U.S. qt.) (25.28 U.S. oz.) that should be filled with 10W-40 Motor Oil.

Do NOT use 2 stroke oil and do not use 10w-40 lubrication oil in your Honda Moped Oil Tank.

What brand is the best for your honda ped? Well, Synthetic is all the Rage. During my internet research another brand of oil that people love and stand by is Royal Purple which happens to be easily located at many auto parts stores near you. I have seen it stocked at my local Pep Boys and Advanced Auto Parts store.

Honda Express Moped Poor Performance High Speed (Highend Speed)

Honda Express moped - loosing performance all of a sudden at high speeds (high rpm's). What's going on???

So, recently I neglected to check my nc50 express moped oil level and I came close to running out completely. I luckily checked before it was too late. Had I waited too long, the honda engine would have eventually seized. Side Note: You can check the oil level using a little see-through window in the gasoline/oil tank on the back of the honda express. [see diagram]

So I filled up all the oil reservoir with new Lucas Semi-Synthetic 2-Cycle Racing Oil. I then rode my Honda noped to work and 5+ miles into my ride, I noticed poor performance at high rates of speed. Just a few days ago I didn't have any trouble going 30+mph on the moped, but now I can't get over 25 mph. My honda express moped top speed totally decreased and isn't changing. I can also feel the engine "pulling back" or lacking power at the top honda speed ranges. It has no problem accelerating though.

I have been trying to deduce what the problem is. The only thing that has changed in the past couple of days is the oil situation. I was running the 2 stroke (cycle) moped oil from the previous owner. I don't know if he had put in low grade 2-cycle moped oil or high performance synthetic oil. I am betting he used the cheap stuff. Does that mean I should use cheap stuff or good stuff?

After doing research online I have found many fellow moped riders LOVE synthetic 2-Cycle oil. In particular, I discovered many riders stand by AMSOIL DOMINATOR® Synthetic 2-Cycle Racing Oil (TDR). Perhaps I should give this a shot. Maybe my Lucas oil just isn't cutting it.

I will continue to repair my problem and post my results here. Perhaps a video on how to remove the Honda Express Engine Oil Pump??? We shall see... stay tuned and check back often for new posts.

Moped Parts and Accessories for Sale | Online

I have updated the Honda moped and scooter parts for sale post that features many reputable online parts stores. For those of you trying to fix your ride or looking to restore a classic, these sites are invaluable when it comes to finding new/OEM honda moped parts.

Check Out the Updated Post:
http://www.hondaexpressmoped.com/2009/10/1977-1978-1979-honda-express-nc-50.html