Yet another Sprint project
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Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Tue Feb 11, 2020 8:33 am quote
It seems like Sprints and GLs are popping up everywhere this winter.

I picked up a nice, clean 1976 Sprint Veloce from our own SEA last month. It was super clean, but missing a few key parts. Also the motor was locked up tight. I did a quick rebuild with some help from Voodoo, and it's running. It needs a bit more love before it's on the road again. Here are some pics from along the way:

bought.jpg
As bought. Missing cowl, seat, horn, etc.

hole.jpg
First look down the barrel. Not good.

barrel.jpg
Almost totally stuck.

fly.jpg
Voodoo got the flywheel off.

crank.jpg
And helped split the engine. So much shrapnel inside. Barrel and piston are toast. The crank is reusable.

Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Tue Feb 11, 2020 8:43 am quote
Took it home and got it on the bench. I think this motor was serviced and then someone immediately holed the piston and parked it. All the wear parts look new. I still got a rebuild kit from Mercato and replaced most everything.

bench.jpg
On the bench

case1.jpg
Case cleaning up nicely.

case2.jpg
Left alone the rear bearings and the cush/christmas tree as they spun flawlessly.

cowl.jpg
Left cowl needs some love. It has some bondo and touchup from a previous incident.

front.jpg
Fat USA horn from Voodoo, levers, headlight bezel. Original sealed headlight still works!

Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Tue Feb 11, 2020 8:49 am quote
Nifty new seat from SEA and a chromed cowl from The Internet. It's a Super cowl, but I kinda like it. Tractor taillight is UUUUUGLY!

Under the hood:
New 20/20 carb
New 3 port Piaggio top end
Bearings
Clutch
etc

I'm looking for a proper Sprint cowl (6 louvre openings) if anybody has an extra.

outside.jpg

Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Tue Feb 11, 2020 9:01 am quote
So it runs, but it hasn't been driven. I hooked up the cables last night.

It starts up easily and runs with the choke out. Release the choke and it immediately backfires and dies. I've checked all of the usual places for air leaks, so I'm not sure what's up yet. Clogged idle? Timing?

I think I made a mistake in reusing the flywheel. If I get it on properly I'm back to where I can't get it off because of the Flywheel removal woes I posted about earlier.
Moderator
P200 PX150
Joined: 28 May 2008
Posts: 4041
Location: Hustletown, TX
Tue Feb 11, 2020 9:54 am quote
I love those fat USA Headlights. I mean really.

On the scoot dying without the choke engaged... I had a similar issue with a scoot that sat for a few years and it took 3 carb cleanings to sort it out. I ended up buying a gallon bucket of carb cleaner and letting it soak for 24+ hours.. and had to do a deep dive on the jets. Worth a shot.
bodgemaster
1963 GL, 1976 Super (x 2), 1974 Primavera (x 2), 2006 Fly 150
Joined: 26 Sep 2013
Posts: 5036
Location: So Cal
Tue Feb 11, 2020 10:01 am quote
Whatís not to love about a 70ís Sprint? Enjoy!
Ossessionato
2015 GTS300, 1974 Primavera, 04 Ninja 250
Joined: 04 Apr 2013
Posts: 4281
Location: San Diego, CA
Tue Feb 11, 2020 10:01 am quote
in the pic of the cowl, it looks like there is a line a couple of inches higher than the cowl - are sprint cowls that much taller than super ones? I thought the cowls were basically the same except the louvers, but I have almost no knowledge on that stuff so I was wondering.
Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Tue Feb 11, 2020 10:18 am quote
sdjohn wrote:
in the pic of the cowl, it looks like there is a line a couple of inches higher than the cowl - are sprint cowls that much taller than super ones? I thought the cowls were basically the same except the louvers, but I have almost no knowledge on that stuff so I was wondering.
In this particular case, yes. The Super cowl appears a bit shorter than whatever was on there before and the front to back length is also shorter. I can barely get the latch and pin connected.

However, this is a Super cowl with trim holes. I think that makes it from the late 60s/early 70s. Not sure if they changed the cowl dimensions when they removed the trim.
Molto Verboso
1979 P150X, 1983 P200E, 1987 T5, 1996 PX200E, 2011 Yamaha Fazer 600 S2
Joined: 02 Aug 2015
Posts: 1760
Location: Veria, Greece
Tue Feb 11, 2020 10:21 am quote
It's been raining Sprints lately. Gongrats!!!

This is how it looks with the original cowl. My friend's Sprint V.

IMG_0035.JPG

Style Maven
74 50s x3 78 P200 84 Cosa 58 AllState 68 Sprint 80 50special '66(?) Super125 + projects
Joined: 22 Nov 2010
Posts: 7606
Location: seattle/athens
Tue Feb 11, 2020 12:23 pm quote
gmontag wrote:
...

I think I made a mistake in reusing the flywheel. If I get it on properly I'm back to where I can't get it off because of the Flywheel removal woes I posted about earlier.
The snap ring groove is still clean and healthy, have you tried to pop it off? It was froze stuck pretty DAMN hard before, the stuckest I've ever seen. If you lapped it in before reinstalling it would hopefully come off as intended w/ a fresh snap ring. Or I could weld it again and give you another FW to try.

Bike looks killer, I'm even digging the chrome. If it runs now w/ good spark & lites, you can think flywheel in October/November maybe.
Hooked
'63 VBB2T - '76 Sprint V - '18 300 GTS Super Notte
Joined: 26 Apr 2019
Posts: 340
Location: Belgium
Tue Feb 11, 2020 1:01 pm quote
Nice! Looks a lot like mine! Same color as well, almost same condition, same year!
Ossessionato
05 Stella, '62 VBB, 76 Sprint V, 63 GL
Joined: 16 Jun 2011
Posts: 2309
Location: Chicago. Well, Evanston, but that's almost Chicago
Tue Feb 11, 2020 4:29 pm quote
I might be able to help you out with a Sprint cowl. My GL came with a right-hand Sprint cowl, which I have no use for, and I need to replace the lefthand cowl due to rust, so I might as well get a pair.

I'll check it for fit on my 76 Sprint, and assuming it's a fit, you're welcome to it.

I'm out of town for a few days, but will be back by the weekend and can check then.
Veni, Vidi, Posti
74 Super, 75 Super, PX project, LML off-roader and new to 2018, '66 Blue Badge Smallframe
Joined: 30 Nov 2011
Posts: 7270
Location: Victoria, Australia
Tue Feb 11, 2020 5:45 pm quote
Re: Yet another Sprint project
gmontag wrote:
...from our own SEA last month...
It doesn't look like it's from South East Asia.
Moderator
P200 PX150
Joined: 28 May 2008
Posts: 4041
Location: Hustletown, TX
Tue Feb 11, 2020 6:09 pm quote
chandlerman wrote:
I might be able to help you out with a Sprint cowl. My GL came with a right-hand Sprint cowl, which I have no use for, and I need to replace the lefthand cowl due to rust, so I might as well get a pair.

I'll check it for fit on my 76 Sprint, and assuming it's a fit, you're welcome to it.
\
Ace. Well that deserves a toast:
Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Tue Feb 11, 2020 6:35 pm quote
chandlerman wrote:
I might be able to help you out with a Sprint cowl. My GL came with a right-hand Sprint cowl, which I have no use for, and I need to replace the lefthand cowl due to rust, so I might as well get a pair.

I'll check it for fit on my 76 Sprint, and assuming it's a fit, you're welcome to it.

I'm out of town for a few days, but will be back by the weekend and can check then.
Thanks. Iím interested. LMK if you are looking for anything in trade or whatís a fair price. Iím not emotionally attached to this scoot yet and may just sell it. In fact, Iím kind of pissed at it at the moment.
Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Wed Feb 12, 2020 1:56 pm quote
Engine idle issue sorted out. The first flywheel woodruff key sheared, and the second one fell off behind the stator, so in both cases timing was off. It's all lapped in and tightened properly now.

Electrical harness is 50% working. I have Hi-lo beams and the keyed ignition works. Still need a battery, horn, and brake/taillight.

Next up: Adjusting shifter cables and clutch. I'll try to ride the bull tomorrow.
Enthusiast
'61 Cushman GS150, '62 GS160, '74 Rally 200
Joined: 20 Sep 2017
Posts: 74
Location: Seattle, WA
Thu Feb 13, 2020 9:52 am quote
Re: Yet another Sprint project
Ginch wrote:
gmontag wrote:
...from our own SEA last month...
It doesn't look like it's from South East Asia.
SEA as in me; an unfortunate choice of username in retrospect. Chose it because it's the airport code for Seattle, before I knew that's how members here shorthand South East Asia.
Enthusiast
'61 Cushman GS150, '62 GS160, '74 Rally 200
Joined: 20 Sep 2017
Posts: 74
Location: Seattle, WA
Thu Feb 13, 2020 9:54 am quote
You've made more progress in a couple of weeks than I did in a couple of years. It's looking good!
Hooked
1964 GS160, 1966 90ss, 1976 Sprint Veloce
Joined: 08 Sep 2011
Posts: 273

Fri Feb 14, 2020 3:57 pm quote
My work lets us leave early on one Friday a month for "wellness". Today is that day, and this is my wellness routine. I took the Sprint for a run around the neighborhood for about an hour and dialed it in. It quit after the first 2 blocks, but it was obviously electrical. I straightened out the HT coil connection at the junction box, and it was off and running. She runs well, shifts smoothly if a little stiff. Brake light isn't working. Long ass new cables need to be trimmed. I think I want 2 chromed cowls now. It needs a Euro taillight, doesn't it?

Here are a few pics.

IMG_7809.jpg

IMG_7807.jpg

IMG_7812.jpg

bodgemaster
1963 GL, 1976 Super (x 2), 1974 Primavera (x 2), 2006 Fly 150
Joined: 26 Sep 2013
Posts: 5036
Location: So Cal
Fri Feb 14, 2020 6:18 pm quote
Another chrome cowl would look pretty sweet
Moderator
P200 PX150
Joined: 28 May 2008
Posts: 4041
Location: Hustletown, TX
Fri Feb 14, 2020 6:35 pm quote
SoCalGuy wrote:
Another chrome cowl would look pretty sweet
This. And +1 on the euro tail light!
Style Maven
74 50s x3 78 P200 84 Cosa 58 AllState 68 Sprint 80 50special '66(?) Super125 + projects
Joined: 22 Nov 2010
Posts: 7606
Location: seattle/athens
Fri Feb 14, 2020 6:45 pm quote
^^^ + 1 on what he said, and sadly I think we're swimming against a popular KEEP IT USA tide here , but I have a few spare "Acorn" style you could consider, sorry no "Sprint/Gl", like it should have . :

Like this:

Should be this:
Veni, Vidi, Posti
a not so normal vbb2 '64, a weirdo vbx '86 and a not so normal pts100 '82
Joined: 15 Jun 2009
Posts: 5551
Location: Indo
Tue Feb 18, 2020 12:57 pm quote
Nice, and yes on the euro tal light, but if u want more blink use Germany spater sprint tail light (its a augusburg sprint version)

Good luck with the rear light and cheer
Hooked
Vespa
Joined: 25 May 2016
Posts: 405
Location: US
Wed Feb 19, 2020 11:36 am quote
nice work,
Rallies Europe 2016   vespa scooterwest scooter west Motorsport Scooters   Scooter Parts Company
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