has anyone ported a stock spree? what to expect?
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has anyone ported a stock spree? what to expect?
has anyone tried porting a stock spree? i am about to give her a try. anyone else experience major gains? what kind? low end? top end? did you open up ports? or did you reshape at all? I am going to try a making some auxiliary ports too if it works out. would be cool to hit 40 with a stock top end.
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Re: has anyone ported a stock spree? what to expect?
does anyone have a decent port map i can see? "=/
Re: has anyone ported a stock spree? what to expect?
The only thing I've ever seen reported on Spree porting is failure to get any improvement... if you look over the Spree porting you'll find that it's extremely conservative, and that due to design it's hard to get exhaust to flow well (it's pinched on way out.)
Suggest starting with porting from bike like SE50/SA50 as a start, perhaps, and be ready with a fresh bore to put it back to stock if it doesn't work out.
Suggest starting with porting from bike like SE50/SA50 as a start, perhaps, and be ready with a fresh bore to put it back to stock if it doesn't work out.
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- eclark5483
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Re: has anyone ported a stock spree? what to expect?
That's all I've pretty much seen on stock porting as well, no real improvement. Maybe 1man8scoots might have something different to say about that, but he's the porting ninja. What have you done with it so far to improve it?
Re: has anyone ported a stock spree? what to expect?
..you misspelled ^^ "impossible"stevespree7 wrote: would be cool to hit 40 with a stock top end.
RideRed
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Re: has anyone ported a stock spree? what to expect?
Motormike, just because I've been absent for a while does not negate my achievements 42mph on a GPS with a "stock" bore. All these years and my record still standsmotormike wrote:..you misspelled ^^ "impossible"stevespree7 wrote: would be cool to hit 40 with a stock top end.
Ol' Red
1987 Spree, 42mph on 49cc (gps)
Broken...
Spreeio
1987 Spree
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1987 Spree, 42mph on 49cc (gps)
Broken...
Spreeio
1987 Spree
With af16e powah!!!!
77cc Malossi Ministroker, 24mm oKo, 30mm V8 pipe.
Chinabike 3000! GY6 clone daily driver/ beater machine bought for $75!
- eclark5483
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Re: has anyone ported a stock spree? what to expect?
Your takeoff had to of really stunk. Brutal, but I suppose it is possible. Would like to see a video if you have one. What else had you done with it on the intake?
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Re: has anyone ported a stock spree? what to expect?
i can hit 44 all day now with my BBk , pipe, racing gears and clutch. i want to hit 40 with a stock bore
Re: has anyone ported a stock spree? what to expect?
Spreetard wrote:Motormike, just because I've been absent for a while-(3+ years)-does not negate my achievements 42mph on a GPS with a "stock" bore. All these years and my record still standsmotormike wrote:..you misspelled ^^ "impossible"stevespree7 wrote: would be cool to hit 40 with a stock top end.
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RideRed
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- patthesoundguy
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Re: has anyone ported a stock spree? what to expect?
The trick with the stock bore is to not overdo it. Clean up all of the casting flaws and re-transition and polish up the exhaust port maybe widen it a little. I leave the timing along on the stock bore. I add some channels to the boost ports and do touch up on all the edges. Re chamfer all of the ports. Good hone.
Got a bit better performance out of all that. It was certainly snappier. And then I did the domed piston and the 84 head. Lots more snap for sure. Not a lot in the way of top end but helps get it up to speed. Every bit helps. I ported the intake and put the 86/87 reeds in place of the 84 ones I had then made carbon fibre reeds. All that with the mlm pipe it was pretty decent. If I had had an 86 or 87 motor it would have been a lot faster. 1man8scoots could probably massage one of those bores and really make it sing but if you don't have the luxury of sending a bore to him you can clean stuff up and get a little more go.
Got a bit better performance out of all that. It was certainly snappier. And then I did the domed piston and the 84 head. Lots more snap for sure. Not a lot in the way of top end but helps get it up to speed. Every bit helps. I ported the intake and put the 86/87 reeds in place of the 84 ones I had then made carbon fibre reeds. All that with the mlm pipe it was pretty decent. If I had had an 86 or 87 motor it would have been a lot faster. 1man8scoots could probably massage one of those bores and really make it sing but if you don't have the luxury of sending a bore to him you can clean stuff up and get a little more go.
Dude! Ya Can't Fix Stupid!
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
- Wheelman-111
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Re: has anyone ported a stock spree? what to expect?
Greetings:
Others have swapped in the larger SB50 reed cage along with some intake port clean-up. Knife-edge the vertical splitter but DON'T remove it.
Others have swapped in the larger SB50 reed cage along with some intake port clean-up. Knife-edge the vertical splitter but DON'T remove it.
Wheelman-111
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Most of my money is spent on scooterparts. The rest is just wasted.
"ISO": '03 Vespa ET4 Malossi187 74MPH
Flash 9: 2001 Elite SR Contesta 72 ZX Tran, 9:1 Gears, Stock Airbox/Carb/Pipe 58.8 MPH
Punkin: 2010 Vespa/Malossi S78, 61MPH
- patthesoundguy
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Re: has anyone ported a stock spree? what to expect?
Cleaning up that intake port on the block really helps its pretty ugly on the spree. Very bad flow stock. This picture was while the job was in progress. the idea is to take away any flat surfaces and have smooth transitions. The top of the holes especially need the help. Here is the intake tube all touched up.
another easy trick is to bend the reed stopper open so that it just clears the case when you install the reed block. It really helps and is a quick easy mod.
another easy trick is to bend the reed stopper open so that it just clears the case when you install the reed block. It really helps and is a quick easy mod.
Dude! Ya Can't Fix Stupid!
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock
84 Spree stock
84 Spree Dio AF18E MHR Cylinder Arrow Pipe 28mm OKO
80 Express, 47mm DR BBKit, Weak Ends Intake, Boyesen Dual stage reeds, 19mm Delorto carb, MLM pipe
79 Express
85 Aero 80 stock
84 elite 125 stock