Honda Spree and Elite 50 Forums

I couldnÔÇÖt get the 90 to work. Was 4 stroking with a stock lid.
Soft seized almost immediately with 2 7/8 inch holes drilled in the lid. Taped over one of the holes and the plug showed it was still dangerously lean.

So my next move is to find some #57-#62 drill bits and wreck a few jets.

Update:
I just installed a Tazland 48mm BBK with the supplied #90 jet.

My setup is as follows:
Stock unmodified airbox
SB50 carb, intake and reed block
Custom pipe
48mm Tazland BBK

Is the #90 jet a good place to start? I donÔÇÖt have a temp gauge and am worried I might seize it.

Man, yours sounds like a total beast. I feel like I've already maxed the speed potential of this one since it's lowered it an inch up front and 3/4 out back. I weigh 160 and its bottoming out at the speeds I'm seeing but i built it for my lady and she weighs considerably less so it should be fine fo...

I didn't have a tach hooked up but there's one in the mail for my moped. Maybe I'll hook it up to check rpm whenever it comes in. Tires are 2.75, i didn't calculate gear ratio after the pulley mod. Cruising speeds are more like 55 give or take 3-4km depending on grade and wind direction. 62 is fully...

So I took .025 off the aluminum drive pulley, port matched the SB50 cage to it's intake, made a new reed using a .25 thick carbon sheet, converted an SA50 carb to manual choke and bolted it on (it actually fits, just barely). The SB reed stop doesn't allow the reeds to open as far as the NQ reed sto...

Little update...Still waiting on the intake, intake parts and carb but I managed to hack together a pipe for it.

It's the original factory finish. Canadian market only apparently. It was in pretty rough shape when I picked it up but buffed out pretty well. Though it looks better in photos if I'm honest. I'll take a few more pics as soon I get a chance.

Awesome, Thanks for the quick reply! I'll definitely be updating with findings. No plans for a big bore in the near future but yea, this should leave plenty of headroom. It does have a ton of mileage though (10,500km) but compression is ok (105 psi cold) so i'll wait till its either tired or seized....

Hey guys, I just finished up restoring an '85 Spree. All stock and runs like a champ. I'll be installing an SB50 intake and reed block, Polini 0.25mm carbon reeds, SA50 17mm carb and a custom pipe (hacked up Doppler pipe from a Derbi GPR application converted to side bleed, adjustable end bleed and ...