Search found 251 matches
- Fri Jun 14, 2013 3:46 am
- Forum: Technical Help
- Topic: Base Gasket wont seal... Low compression
- Replies: 2
- Views: 1524
Re: Base Gasket wont seal... Low compression
So I guess the question is how can I get the base to seal? Is there something else wrong? You might have 2 things that need attention: 1. new gasket needed, & 2. rings not sealing. If your jug is scored, the compression will stay low. It's real hard to start at 60psi, but possible. Better to ta...
- Fri Jun 14, 2013 3:32 am
- Forum: Technical Help
- Topic: Advice on '86 Spree
- Replies: 14
- Views: 4874
Re: Advice on '86 Spree
90 is fine for a 48mm BBK. 87 might even work OK. Better rich than lean while you're sorting it out.Jam-bro wrote:It has a 90 jet. Is that too small for a 48mm BBK?
- Fri Jun 14, 2013 3:24 am
- Forum: Technical Help
- Topic: carb jets?
- Replies: 6
- Views: 3156
Re: carb jets?
The Scorpion is for the smaller 72cc BBK. The 50mm (89cc) BBK will have a 34mm exhaust flange on the jug and the Scorpion won't fit. Measure everything carefully else you'll end up with a lot of stuff that doesn't fit.paulpauly7 wrote:splash out and buy a scorpion pipe for it
- Thu Jun 13, 2013 4:00 am
- Forum: Technical Help
- Topic: lost power at WOT
- Replies: 10
- Views: 5015
Re: lost power at WOT
I was cruising down the road at maxed out speed. Probably 55mph on an ever so slight down grade. All of the sudden I lost power. I vote for soft seize, especially if you were running without an air filter, for example. It'll easily overheat to the point of seizing at 55mph downhill. If you had a CH...
- Thu Jun 13, 2013 3:44 am
- Forum: Technical Help
- Topic: carb jets?
- Replies: 6
- Views: 3156
Re: carb jets?
Any 50mm BBK will have a bigger exhaust pipe (~34mm), so your stock exhaust system won't fit any more. Bigger exhaust+bigger carb means your CHT will go through the roof, so watch that you don't totally incinerate your handiwork! You MUST go extra rich to start, otherwise you could melt your new pis...
- Thu Jun 13, 2013 3:28 am
- Forum: Technical Help
- Topic: New carb and cold start problem
- Replies: 7
- Views: 3275
Re: New carb and cold start problem
Bystarter carbs have to be started with the throttle CLOSED. With throttle open, the bystarter doesn't richen the mixture. Also, 2-strokes are hard to start if compression is low, so it's a good idea to check the compression. Above 80psi, it should start with minimum difficulty, but below 60psi you'...
- Sun Jun 09, 2013 2:14 am
- Forum: Performance Technical
- Topic: change connecting rods?
- Replies: 15
- Views: 6396
Re: change connecting rods?
You have to ask yourself if it's worth all the fuss to rebuild. Last time I needed to major my Dio crank, I went on to ebay and found a brand new crank with rod & bearings all in one finished package for $29. It arrived in a few days, and then another day to check and install. It was from Taiwan...
- Mon Jun 03, 2013 4:00 am
- Forum: Performance Technical
- Topic: Keihin PB carb manual choke on ebay
- Replies: 24
- Views: 13571
Re: Keihin PB carb manual choke on ebay
I know this thread is a bit old, but I thought I'd add my 2 cents worth since some readers may still be looking for something that works. I got this 19mm Keihin from Taiwan for $39 and it has the standard electric bystarter choke and all the fittings match except for a couple of small mods needed. T...
- Tue May 28, 2013 2:07 am
- Forum: Technical Help
- Topic: Honda Aero running lean! How do I fix?
- Replies: 6
- Views: 3377
Re: Honda Aero running lean! How do I fix?
It doesn't sound lean. More like the throttle slide isn't assembled correctly.Guitargraham wrote:when I give it gas, the engine revs up, but won't come down!
- Tue May 28, 2013 2:02 am
- Forum: Technical Help
- Topic: Some advice please ? I think it's heat related
- Replies: 13
- Views: 4913
Re: Some advice please ? I think it's heat related
when i got it, it had no inner fender or heat covers on the engine or anything With the big carb, cone filter, etc it will be running VERY hot. It'll be worse without the plastic shroud around the cylinder since that's how the jug is cooled. If it seizes, the piston will likely melt on the sides an...
- Tue May 28, 2013 1:52 am
- Forum: Performance Technical
- Topic: My 2000 Elite SA50P quest for 45mph
- Replies: 39
- Views: 14614
Re: My 2000 Elite SA50P quest for 45mph
My goal is 45mph without going the bbk route. To get to 45mph out of 50cc, you'll need about 12,000rpm with stock gears. A Scorpion exhaust and aftermarket carb/manifold will get you part way there. Your stock reed valve will eventually shatter at these revs, so change to a carbon-fibre type. NOTE:...
- Tue May 28, 2013 1:36 am
- Forum: Performance Technical
- Topic: Premix advice
- Replies: 11
- Views: 5404
Re: Premix advice
Just off-load the stuff from your Cessna 150 at the Lanai AirportWheelman-111 wrote: if YOU say that they'll arrest you at the King Kamehamehameha Airport.
- Tue May 28, 2013 1:30 am
- Forum: Performance Technical
- Topic: Premix advice
- Replies: 11
- Views: 5404
Re: Premix advice
On my 90cc, I mix 200ml oil in every 10 liters of gas in a gas can, but I keep the oil pump since it keeps everything lubed during deceleration (downhill for example). The oil pump is there for a reason. The total oil ratio, (premix +oil pump) is about 30:1. Buy a cheap CHT gauge while you're doing ...
- Tue May 28, 2013 12:59 am
- Forum: Performance Technical
- Topic: HAVE YOU SWAPPED AN ENGINE? how did it stop?
- Replies: 4
- Views: 1835
Re: HAVE YOU SWAPPED AN ENGINE? how did it stop?
This is a non-problem: Almost any m/c repair shop can make up a cable in a few minutes.mmeadows wrote:the rear brake cable on the 83-84 aero is far to long to engage the brakes on the 87 aero engine. what do i do?
- Tue May 28, 2013 12:56 am
- Forum: Performance Technical
- Topic: help! 87 spree
- Replies: 16
- Views: 5902
Re: help! 87 spree
Sprees are popular as pit bikes with race car drivers. At 80lbs, it's possible to pick it up and put it in the back of a pickup unassisted. Yours is especially nice because it has a kick start as well as electric start (very rare).joe rouse wrote: i do like this little honda spree