More POWER! More SPEED! 78 Honda Express NC50 Cheap Garage Find - Exhaust, Cylinder Head, & More!

[@tfhatter9639]

I had a "78 also, I retired it after 16,000 miles. I just became older. I modified it a lot for racing the neighborhood kids (tons of memories). I achieved 47mph on flat! Try opening up the stock tail pipe by cutting the rear section open and blowing out the two chamber pipes to relieve the back pressure (is key) and Patching the side back up. this will require a Oxy/Gas skills. Sounds real good. Also, I bored the Cylinder head 4 over, adjusted the reed valve guide a little more open, and used an more unrestrictive air intake (cold air intake). Keep the exhaust port free of carbon they clog up (very common problem). Remove and scrap/chip it out. Do the cylinder head as well. Replace the piston rings at the same time. NGK plug. The magneto points can cause a week fire if they are worn too. Good luck on this project.

[@user-we1ue3fl5h]

I borrowed a 1979 orange-colored one of those from a family member back in the early 80s. On the flats, if I pulled my knees together, my elbows in and put myself into a tuck it would hold 35 mph all day no problem. I only weighed 150 pounds back then, so that's probably why. We once took the pair of them on a long day trip; from Lincoln, NH to Conway, NH and back again (70 miles round-trip) over NH State Rt. 112, a.k.a. Kancamagus Highway. A road with 1764' elevation gain and at times up to 7% grade for several miles. The bike ran flawlessly. As a newly-licensed 16 year old kid from Boston, I thought that adventure was a ton of FUN! I'm just glad nobody I knew saw me on that thing.

[@Putt-Putt-Vroom]

So much fun! They never fail to bring out a smile

[@EvanWells07]

For sure! I'm having a ton of fun with it!

[@Derekmartin20]

I had a friend that his grandfather got him the same one . We all had motorcross bikes and ran all over the country on them and a AMA track very close to home. He ran with us on that thing and it was alot tougher than we thought.

[@EvanWells07]

MAN!! I am having a ton of fun with this thing! Don't worry I'm pretty much done with this one ( unless you guys want to see a big bore kit )

[@miguelpagansr6128]

Oh yeah , more videos on the express please.😂

[@boogiechassis7726]

Dang! That high compression head really snapped that beast awake!

[@EvanWells07]

It really does run better, just needs more speed.

[@boogiechassis7726]

@@EvanWells07 always, pal. I got off my butt and put a wideband in the truck last night. Fiddlin with the carb today.

[@EvanWells07]

@boogiechassis7726 it will be doing "your favorite trick" in no time!

[@miguelpagansr6128]

They're so much fun but slow as hell going uphills, try going one and a quarter turns out on the fuel/air mix screw as your base target and work from there.

[@larryshaver3568]

true a little too much oil never hurt an engine

[@EvanWells07]

Yeah, it won't hurt it, but it's also not ideal. On the 2 strokes it will mess with the fuel ratio and can run better / worse depending on how close or far off it is. Since I'm not out here trying to race people, I think it will be ok :)

[@AndrewPietersen-gu4rd]

Mix fuel and oil 40:1.....Treatland spelled one word. Regards.

[@prawny12009]

Pretty sure the nf75 (71cc) top end will bolt up, steel sleeved aluminium cylinder with bigger head. There have the same stroke as a lot of Honda 50 mopeds, eBay has some nf50/75 crank cases listed so the crankcases should be able to take the nf75 cylinder (71cc) The nf has an auto lube oil pump too.

[@AndrewPietersen-gu4rd]

Buds you cannot just pour oil into the tank to premix . I am from South Africa and I have 5 Honda Express bikes all 1981 models. You are supposed to mix the oil and fuel 40:1 beforehand in separate container. I have the last 3 fuel tanks in the world in my garage. One yellow one blue and one orange. I plan to build up or restore another 2. Treat land has the best after market parts. It is not it is what it is. You make it so. Regards.

[@EvanWells07]

I know that's not how I'm supposed to mix the oil, but it is what it is. I usually premix in a separate can, but was out of that, and only had regular gas (and not enough to bother mixing up in a can). I have seen the treat land stuff, just never picked up anything from them. If I do a big bore kit it will be from them.

[@seandaugherty8796]

Dude, small world.. I use to be your neighbor across the street (South G St.) when I was a kid. Love the video & excited to see more! I have a 1982 Express.

[@EvanWells07]

Oh the good ol' south g days!

[@prawny12009]

Yeah I wouldn't be eating that blackberry, low bush with dogs nearby😂😂😂

[@Brandenuzis]

My buddy had one with a chainsaw engine on it. The previous summer I bought a mini bike and a blaster engine and we spent weeks putting it together. That mini bike was a mean son of a bitch. During the winter we studded the tires with roofing screws on my mini bike and his atc250sx. Brought them out on a huge frozen lake and he broke his leg and I broke my hand pretty bad. Horrible idea even tho it was a blast to haul ass on the ice😂

[@EvanWells07]

Sounds like my kind of fun!

[@SpiritedWrenchers]

Mo powa, mo betta. 💪👌

[@EvanWells07]

Always!

[@YellowJacketGarage]

Dude, between you and @spiritedwrenchers I might have to fine something similar for myself. Great vid, a lot of fun!

[@EvanWells07]

Might as well! I honestly enjoy this more than my virago. It's great around town, or for riding to work (for me anyway)

[@YellowJacketGarage]

@EvanWells07 you know, you jump on 69 south and you'd get pretty close to the house here...heck of an adventure on that hog.🤣🤣🤣

[@EvanWells07]

@YellowJacketGarage it's not that it's so slow on the highway, it's that everyone drives so fast!

[@johnpage1922]

Nice video! But on a bog standard 78 you should see 28 on the flat and up to 31 on a downhill GPS speed, with the mods you have you should be seeing better than 30 easily! There's a fundamental set up issue otherwise, don't forget weight only affects acceleration not top speed! Try a downhill run, if you can't top 30mph then there's an issue somewhere.

[@EvanWells07]

@johnpage1922 what would be the setup issue though?

[@romeparrilla8307]

its looking good,ive been looking for a 25mm air filter but no luck,all they have on line are 28mm and up. can you please let me know where you bought the red air filter and is your carb has 25mm opening too?thanks

[@EvanWells07]

Thanks! I got the filter on eBay. I don't remember off the top of my head what size it is, but I have also changed carbs several times since this video.

[@aaronb554]

Great video, now come tune my truck!

[@EvanWells07]

I'll be right over!

[@romeparrilla8307]

nice moped,i do have the honda urban express and i was wondering if i could put a tubeless tires in it?

[@EvanWells07]

Thanks! To answer your question, not really. These wheels are designed to run tube type tires.

[@larryshaver3568]

Can the seat be raised at all?

[@EvanWells07]

Not really.

[@lukew9033]

Hey man you wouldnt know where i could get a ignition coil for one of these. Ive got a 79 and i cant find a coil anywhere

[@EvanWells07]

I find pretty much everything on eBay. Other than that, try finding a parts bike local to you maybe.

[@lukew9033]

Ok thanks i hope to get mine running

[@jackfoley5600]

what ratio premix do you run?

[@EvanWells07]

I should probably be more spot on with my mix... I want to say somewhere around 40:1?

[@Pigmaster6373]

What horn is that

[@EvanWells07]

It's an Emgo 86-18326. I got it on Ebay

[@dimitrimotor2861]

der is e flens for dat

[@EvanWells07]

For what?