What about that 40cc 4 stroke - Pocket Bike Forum - Mini Bikes
 
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post #1 of 18 (permalink) Old 1 Week Ago Thread Starter
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What about that 40cc 4 stroke

Has anyone laid eyes on these 40cc 4 stroke engines that come on the m1.
I'd really like to see some pics of one but I CANNOT find any.lil help please!!
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post #2 of 18 (permalink) Old 1 Week Ago
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Re: What about that 40cc 4 stroke

I have only seen an M2 w/ Ducati style frame and a dirt bike 40cc four stroke. The engine is gutless, there are no high performance parts and the way it's put together, it's almost impossible to modify it. The members here who have bought one, were not happy compared to the 2 strokes. I love the frame and the body work, but thanks to Obama, No more 2 stroke bikes are imported. A 2 stroke fires every time the piston hits the top, a 4 stroke every other time plus it has to gear drive a cam and valves etc. which takes power from the engine. There only 40" long, and about $499 shipped, my A2 is 44". You would have to do some welding to get a 2 stroke in the new bikes, if it's even possible.
I would search on Craigslist & eBay etc., to find a good 2 stroke reed port engine bike, still a lot of hp parts for them and it's real easy tp modify them with very few tools. What state or country do you live in?? See dirt bike & engine Photos.
Search eBay: 40cc 2 stroke pocket bikes, and see what shows up.
Attached Images
File Type: jpg 4 stroke 40cc New PB Engine & Bike1.jpg (400.8 KB, 14 views)
File Type: jpg 4 stroke 40cc New PB Engine & Bike2.jpg (286.6 KB, 14 views)
File Type: jpg 4 stroke 40cc New PB Engine & Bike3.jpg (41.5 KB, 12 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #3 of 18 (permalink) Old 1 Week Ago Thread Starter
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Exactly what I was looking for.
And thanks for the info.
I really like the looks of the m1
I saw them on walmart.Com for 309.00.do you know by chance if those are 3 piece motor.if so I would really like to attempt a build on one.bore it ,stroke it and port it.luckily my dad builds and ports drag bike engines so I have a little experience,not a lot but a little.and maybe put one of those small superchargers on it.I know its a lot but I like a challenge.whadda ya thank!
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post #4 of 18 (permalink) Old 1 Week Ago
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Re: What about that 40cc 4 stroke

That's the problem, I have never seen how the engine is put together, but have been told the way the cyld is it would be hard to do. I would go to Walmart with your dad and look at the engine close up. I owned and friend that sold me his bike after he finished his Funny Bike Nitro drag bike, had to redo and put the engine back together, he did all the machining work I put it together, a 1015cc full race engine Kawasaki Pro Stock drag bike a few decades ago, well till I crashed it, lol. Here is one of my a projects a pocket rocket drag bike with water cooled clone Polini engine.
Attached Images
File Type: jpg 100_0021.JPG (500.1 KB, 12 views)
File Type: jpg 100_0022.jpg (151.5 KB, 11 views)
File Type: jpg 100_0024.JPG (471.2 KB, 11 views)
File Type: jpg 100_0025.JPG (429.5 KB, 12 views)
File Type: jpg 100_0026.JPG (511.6 KB, 11 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #5 of 18 (permalink) Old 1 Week Ago
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Re: What about that 40cc 4 stroke

Update: Here is another plan, I just left WallyWorld, you might think about buying the $309 bike with a 33cc 2 stroke piston port engine, take it out and build a 49cc P/P hot rod engine. Since you work on hp engines it should be pretty easy, I know way more about that engine and have built a few.
The 33cc is just a smaller version of parts of which are not inter changeable with the bigger case-bigger crank 43cc 40mm bore and 49cc 44mm bore engines that have the same crank but bigger bore cyld, might have to mod the frame mount holes, but it should be pretty easy. A stock 49 and a hot rod 49cc
Attached Images
File Type: jpg Modified 49cc Piston Port Engine2.jpg (412.4 KB, 11 views)
File Type: jpg Modified 49cc Piston Port Engine3.jpg (462.5 KB, 10 views)
File Type: jpg Red Head PP and Cag 3rd Bearing1.jpg (316.9 KB, 12 views)
File Type: jpg Red Head PP Engine4.jpg (375.7 KB, 11 views)
File Type: jpg Red Head PP Engine5.jpg (413.6 KB, 11 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....

Last edited by EPR; 1 Week Ago at 11:52 AM.
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post #6 of 18 (permalink) Old 1 Week Ago Thread Starter
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Great idea,I like the hopped up 49cc you have there.does it have an ada head and cylinder.I've seen that type of head before and they really look like good quality.
I started building my so a bike last year it has a stretched swing arm similar to yours.I think I had a thread maybe drag cag.it actually started as a blata 2.5.I got started back on it a few months ago.I'll find the thread and post some updates it's really coming along.
But as far as the 4 stroke,I'm just not sure.the we sites make them sound so nice.I've built a couple 2 strokes and I guess I'm just looking to do something a little different.I guess once I get it ,"if I get it" and it's crap I can always just throw it in the old igloo parts cooler along with ALL my other fails,lol.
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post #7 of 18 (permalink) Old 1 Week Ago
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Re: What about that 40cc 4 stroke

Rule #1, Never believe what you see on the internet, lol. They lie like Dogs, especially when it comes to horsepower and top speed, lol. Yeah, love to see the Blata project, we love photos here, and project bikes the Crazier the better. I think the problem with the 40cc honda clone engine is, the cases and cyld are one piece or something like that, I was told that its almost impossible to modify it. Never going to beat a hopped up 2 stroke. The Cag MT-A1 reed port engine is the easiest engine to modify and there are tons of cheap parts, I get stuff direct from China. I sold the red head engine months ago, it has a reed port alum alloy head mounted on a cut 49cc piston port cyld. I hacked sawed the top off under the 5 fin down, then had to grind, machine & surface the ring that the reed port head sits on. No hp cylds for the piston port engine. The reed port, which the R/P will fit the $309 you can get a kit for around $80 shipped with 15:1 Billet Alum Wing Head, cyld, piston and rings, full circle racing crank, gaskets everything you need. These guys modified some piston port parts, cut stock cyld and machine a head, this is right up your alley.
Attached Images
File Type: jpg Piston Port 2 Piece Head Cyld1.jpg (97.8 KB, 10 views)
File Type: jpg Piston Port 2 Piece Head Cyld2.jpg (102.3 KB, 10 views)
File Type: jpg Piston Port Billet Reed Box1.jpg (108.0 KB, 10 views)
File Type: jpg Piston Port Billet Reed Box2.jpg (82.2 KB, 10 views)
File Type: jpg Piston Port Intake Purge Fitting.jpg (92.4 KB, 10 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
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post #8 of 18 (permalink) Old 1 Week Ago Thread Starter
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Epr,Well I thought about it and saw something that really caught my eye.
It was a w/c 30cc b1 replica,it looks pretty cool.quality doesn't look to bad either.
Problem is the site I saw it on doesn't seem to wanna answer the phone or emails.seems like I saw where you may have mentioned having a blata replica.
Would you happen to know whO sales them.the b1 replica or the 30cc zt w/c.
There at gocartsusa.com,but I can seem to get in touch.Any help would be much appreciated,pbp peeps. Thanks
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post #9 of 18 (permalink) Old 1 Week Ago Thread Starter
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Correction for last post,
They are 39cc w/c engines.
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Re: What about that 40cc 4 stroke

Don't Do It, the engines are OK, but the water pump system sucks. I have a 50cc ( 46cc ) C1 Blata clone, and most of the time its apart. Also have an air cooled 39cc Blata clone, in a W/C C1 frame, 13 bikes and 5 project bikes. The C1 W/C is the Worst, the pump is inside the engine cases, and you have to remove the engine and split the cases to fix it, its driven by a O ring belt off the back of the flywheel to the pump pulley under the rope starter housing. The OEM stuff don't last long, and when it fails you don't know till your engine is Fried. Just got mine back together, for the second time, afraid to start it now, although I put SKF bearings, crank and pump and Dupont Viton red water pump shaft seals.
I would look for a 40cc or 50cc, Polini clone engine bike where the pump is on the outside of the engine, I put 3 black lines on the pump pulley so I can tell if its turning. If you can find an air cooled Blata clone, that's ok. I would try to find a W/C blata clone that don't run and convert it to air cooled, the cases are the same, you just leave the water pump off. On my avatar bike made in Italy, GRC GP w/ all alum frame, I cut the body work on the left side near the bottom, so I can see if the pump pulley is turning. It has a 40cc W/C Polini clone engine with a Polini bell and & BZM racing clutch.
Find Kray15's post under Water cooled bike, he will tell you the same story. See photos, first 2 are my W/C C1, the next 2 air the A/C Blata clone, and the last is the 40cc W/C Polini in my avatar bike. I am building a Euro 40cc BZM racing engine as we speak for my avatar bike. Rule #2 Let the Buyer Beware, lol.
Attached Images
File Type: jpg 100_0001.JPG (501.7 KB, 9 views)
File Type: jpg The PB Great Pumkin Race3.jpg (335.5 KB, 10 views)
File Type: jpg 40cc Air Cooled C1 Blata Clone1.jpg (455.8 KB, 10 views)
File Type: jpg 40cc Air Cooled C1 Blata Clone2.jpg (477.4 KB, 8 views)
File Type: jpg First GRC-GP Photos3.jpg (511.4 KB, 10 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....

Last edited by EPR; 1 Week Ago at 11:23 AM.
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post #11 of 18 (permalink) Old 1 Week Ago Thread Starter
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Man those are for sure some sweet looking bikes.
So,the banshee sho reproduction polini style, it looks good.
I saw a page that shows mid south mini moto having them for 695.is that right.may be an old page.
Anyways,do you know who sales the reproduction polini bikes or any other decent quality reps .I Can't afford the real thing but would like to get one of the knock offs.I just can't find anywhere that sales them .that alibaba site.but seems like you have to be a business owner or something.can't get any responses from anyone.
Any help would be much appreciated fellas.
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Re: What about that 40cc 4 stroke

I know Stoney at Mid-South, thats where I get all my Euro parts. $695, for a China Polini engine is way to much. The last photo is my GRC with a 40cc Polini clone engine, a 36mm bore the 50cc has a 40mm bore and a 39mm stroke. My Banshee Sho is a copy of the GRC-GP, but it has a copy chrome steel frame. See photos. The first three are 50cc Banshee and the last 2 are the Euro 40cc BZM 690 racing cases and cyld and head, for the engine I am building for the avatar GRC-GP.
PS: I was looking for a China W/C Polini 2 weeks ago, can't find one anymore, on eBay or internet stores. Plenty of 39cc W/C Blata clone engine though, lol. Go to www. tsunamibike .com in Canada, 2 stroke parts, page 5. The have a39cc W/C Polini's for $350, & I think the $400 D1 Polini clone is the 50cc engine, there complete ready to rock and roll, and they have the Blata 39cc air cooled engine for $250 too. There shipping cost are real expensive, did not look but they have a phone and email address.
Attached Images
File Type: jpg 50cc Banshee Sho Finished1.jpg (166.4 KB, 9 views)
File Type: jpg Banshee Just Assembled Bike1.jpg (169.6 KB, 8 views)
File Type: jpg Rebuilt 50cc Banshee Engine1.jpg (464.0 KB, 7 views)
File Type: jpg 100_0660.JPG (476.9 KB, 8 views)
File Type: jpg 100_0663.JPG (474.1 KB, 7 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....

Last edited by EPR; 1 Week Ago at 05:50 PM.
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post #13 of 18 (permalink) Old 6 Days Ago Thread Starter
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Can someone help me out.
I've looked everywhere I can think to look.
Does any body sell the complete grc gp copy bikes or banshee clones really any of the clones,complete bikes.I have found complete engines ,"thanks EPR". BUT I can't find any complete bikes for sale,every one I find is an old page.is it legal to sell them in the us anymore?
I would even like to find something used but I can't seem to do that either.
Any help would be much appreciated.
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Re: What about that 40cc 4 stroke

They have not made the Banshee Sho for 10 years?? Mine is a 2006 I think, my real GRC GP is too. Used is the only way to get one now, I just put a new 40mm cyld, piston & rings and 15:1 billet alum ADA Racing head on it. I would sell it online, but shipping is to much now, $200 plus dollars

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Re: What about that 40cc 4 stroke

Do you have Facebook? I can help you find tons in bikes for sale in Italy. Where are you from?

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post #16 of 18 (permalink) Old 5 Days Ago Thread Starter
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Yeah I have Facebook
Do they have a lot of fb pocket bike pages in italy
I may have found a grc rr and it is sweet."may have"
But im from kentucky USA.
But I would for sure welcome any help.
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Re: What about that 40cc 4 stroke

The're not going to let you import even a used 2 stroke bike from Europe, last year off eBay I bought a used 2 stroke engine from England $30 shipping costs, shipped Pitney Bowes, customs in NY., NY. sent it back. All 2 stroke motorcycles are illegal now, except the gutless 33cc 2 stroke Cags sold even by Wally World.
Shipping a whole bike, I don't even want to ask, lol.

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Re: What about that 40cc 4 stroke

Yea, search minimotoscout24.it if you add me as a friend I'll add you to all the pages. My name is Kyle Stanton Ray. Right now there is a guy selling a grc rsr 50cc for €500. I have a few friends who have bought their bikes from Italy.

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