I found the problem!
- Thread starter Eric2.0
- Start date
All that should be done at the factory.
It's stupid to have to figure out an engine that won't start and it's brand new.
Hey, I know some things would need fixing, but man, this is just ridiculous. Lap and shave the heads? new gaskets/hardware and if the carb is any good is a 50/50 chance.
Just so frustrating fartin around with something you have no idea if it's going to work no matter what you do to it and have a father waiting on me to get it going so he can ride it on Sundays to the diner in the mornings. So he can enjoy life a little.
Well I couldn't do it and had to tell him so last night.
Just one huge mess that I'm going to try and forget.
mapbike
Well-Known Member
Eric, my personal suggestion.............
I just put a BGF slant head 66cc on a bike last week that had been sitting in a box in my shop for over a year, I didnt do anything to it internally, never pulled the head, only put a Manic ported intake on it and made up a not so good exhaust for its breakin miles, this engine was put on the bike and I had it running and was riding it in about 3.5 hours, the bike already had a sprocket on the rear wheel and the throttle on the bars when I started but that was about it.
I said all of this to simply let you know that the problems you have had with that engine are not typical...... I have 4 engines and currently have 3 bikes running and they all started up the first time I popped the clutch after installing them on the bikes, and then I went for a ride down the road within minutes of them busting off for the very first time, and this is the typical story of these engines for the most of us.
If I were in your shoes I would go on ebay, look up BGF, buy just an engine ONLY for $80 + shipping mount it on that bike and start riding it that same day and I'll 99.9% Guarantee that would be the case if you did that very thing.......
That would be way cheaper than the prebuilt set up and probably just about as good for what you are wanting the bike for..........
Just my $.02 nothing more nothing less.........
just get an other engine and this time next week good ole dad will be riding his bike.........!
Sincerely, Shan
I just put a BGF slant head 66cc on a bike last week that had been sitting in a box in my shop for over a year, I didnt do anything to it internally, never pulled the head, only put a Manic ported intake on it and made up a not so good exhaust for its breakin miles, this engine was put on the bike and I had it running and was riding it in about 3.5 hours, the bike already had a sprocket on the rear wheel and the throttle on the bars when I started but that was about it.
I said all of this to simply let you know that the problems you have had with that engine are not typical...... I have 4 engines and currently have 3 bikes running and they all started up the first time I popped the clutch after installing them on the bikes, and then I went for a ride down the road within minutes of them busting off for the very first time, and this is the typical story of these engines for the most of us.
If I were in your shoes I would go on ebay, look up BGF, buy just an engine ONLY for $80 + shipping mount it on that bike and start riding it that same day and I'll 99.9% Guarantee that would be the case if you did that very thing.......
That would be way cheaper than the prebuilt set up and probably just about as good for what you are wanting the bike for..........
Just my $.02 nothing more nothing less.........
just get an other engine and this time next week good ole dad will be riding his bike.........!
Sincerely, Shan
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DuctTapedGoat
Active Member
You can also always sell some parts off the main motor to cover the cost - (not the head obviously, but any other parts). Heck - clutch pads & ring, gaskets, cover plates, the piston and jug, bearings - that'd take a chunk out of it.
Mike B
New Member
You always have to pull the head before you even get started.
So's you can back out the long studs and locktite them.
Otherwise the head will be banging the gas tank when the studs let go.
Nah, not really, the engine would die before that ever happened.
Why don't you take one of these guys' offer to exchange the motor? You can send a half sawbuck with it to pay for a new head.
So's you can back out the long studs and locktite them.
Otherwise the head will be banging the gas tank when the studs let go.
Nah, not really, the engine would die before that ever happened.
Why don't you take one of these guys' offer to exchange the motor? You can send a half sawbuck with it to pay for a new head.
I decided I'm going to take another chance. Already a couple hundred in the hole so why not another 80?
See, I know how to start an engine...I'm not dumb that way and I know what makes them tick....so Possibly another motor will actually run. I'm also getting another NT carb along with it, because I suspect that was the problem with the "*****" motor... It had tremendous good spark after replacing the MAg and cdi.
I don't get it.... I put RTV on the intake, same with the manifold gaskets and put o ring in the throttle cap.... wired up right, exact oil mixture, gas flow is great, fuel bowl full.... Better plug....everything.
Yes..I'll get a BGF and see what happens, new NT carb. I have extra parts now...two cdi ect..... So why not....another 80 bucks.
I watch them on youtube and I get the urge to try again lol.....looks so easy on there and I saw one with a Morini....it has a kick start which would be nice.
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I was so out of breath from pedaling it with nothing put a muffled put put everytime that I was starting to hack and legs felt bad..... I got sick of it and totally demolished it. Knocked it from the frame....
It's totally gone.
Yes I know it was stupid, but I was so damn tired of working on it with no results...no results at all, not even one powered roll-out.
DuctTapedGoat
Active Member
And you know - the biggest thing that got ya on that motor was that you installed it a year after you bought it. Now, when you buy the motor you'll have the assurance that you've got the retailer's warranty behind it!
mapbike
Well-Known Member
Glad to hear a little spunk in the right direction in you typed voice....LOL
that is one good thing about it, you will have a good bit of spare parts for the other engine if you need something for it down the road, these things are so much for it isnt even funny, here is a link to a short 3 min. video I made on a ride I took just out fooling around a while back, the quality isn't the greatest because I shot it with my cell camera, but it shows the fun anyway........
Just hang in there Eric and you and your Pop will be ginning along in no time, and you will need to get the stuff together and build you one so you and da can get out in the nice weather and take a cruise together, it's much more fun to have someone to ride with..... once you do the bug will get a hold of you just like it has the rest of us, it's very addicting.......
YouTube - Bike ride 3-15-2011.mp4‏
Peace
that is one good thing about it, you will have a good bit of spare parts for the other engine if you need something for it down the road, these things are so much for it isnt even funny, here is a link to a short 3 min. video I made on a ride I took just out fooling around a while back, the quality isn't the greatest because I shot it with my cell camera, but it shows the fun anyway........
Just hang in there Eric and you and your Pop will be ginning along in no time, and you will need to get the stuff together and build you one so you and da can get out in the nice weather and take a cruise together, it's much more fun to have someone to ride with..... once you do the bug will get a hold of you just like it has the rest of us, it's very addicting.......
YouTube - Bike ride 3-15-2011.mp4‏
Peace
So that is one of those BFG engines? Sounds good.
I did in fact remove the cylinder head from the old engine today and I noticed GAS on the gasket, not just on the edge, but toward the center. Noe how would gas get between the head and head gasket? ****ty seal I'd say. Also the aluminum gasket looked LESS crushed on the side where the gas was. You could barely see the ring where the head "creases" it down into the cylinder.
I'm thinking bad seal and vacuum leak...had compression though....well I think it did. felt like it. That would explain the running out of gas sound and lack of throttle response.
P.S. This may seem strange, but I lied about destroying the engine....It's still very well inside the bike. I just get so bent out of shape that I get a little over board. I'll take a video to show it's still alive lol
I know it! Trying to keep dad's spirit up as well by telling him eventually I'll get it. The pressure lol.
I think for next year though we'll go with Honda 4 stroke or something like that....Would be lot less hassle for him who is 67 with a bumm shoulder. Pull start, reliability and all that....Would be worth the extra cost IMO.
I myself plan on staying with the China bastards lol. Eventually work up to a Morini....kick start and powerful it seems...reliable...
I aint done yet!
Yeah, regular open nut, one lockwasher and 1 flat washer.
Try it, it could make the motor run -
Going out tomorrow to Hiawatha fasteners to get some top grade stuff. nice nut washer....engine quality, not the swing set nuts and bolts on it now lol.
I'm going to sand down the head a little too before bolting it down again.
Who knows..it may take off but I won't get as mad as before if it doesn't....This engine is officially a test pig that I am determined to find the problem in. I'm have another engine block on the way with a new NT carb.
Been reading about that problem in the cylinder/head forum. Most likely mine were bottomed out and due to no quality control, it never got tightened properly. Man, that is bad lol....
Now I understand guys who take a NEW engine and completely re-do the hardware and square things up before starting.
I bet that was the trouble all along...no throttle response, muffled "kinda start" and die.....I'm thinking major vacuum breach on the cylinder head.