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Old 12-04-2013, 05:18 AM   #31
driller OP
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Location: In The Isothermal Belt, NC
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Nekkid!

Hope you are keeping the basement warm. A truly Naked bike. If the body doesn't go back together I guess we will have a "Skelly".
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Old 12-04-2013, 06:18 AM   #32
MODNROD
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My wife just told me it looks a bit like a big industrial vacuum cleaner with a seat.

I would have thought a towel for a bit of modesty maybe?
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Old 12-05-2013, 04:05 PM   #33
VanDiemenF2
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You are going to enjoy the big bore kit. The power/weight ratio seems just about right to me.
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Old 12-05-2013, 09:32 PM   #34
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Latest pictures of Blowfly.

Here she is this afternoon.


HAVE YOU NO MODESTY? COVER YOURSELF!!!


This is as nikkid as she would get, and I had to promise no one but me would ever see these pictures and that they would never be put on the internet.


Most of the internal organs.


Detail shot of her new jug with the old piston.


Old piston, new piston. Quite a dish in the new piston so as to maintain compression at somewhere close to stock.
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Old 12-06-2013, 06:58 AM   #35
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Just WOW!

I have been on the road trying to get to her. Oh, to see her internals this way! Three more days before I can be there...I know she is getting the best of care.

Looking at the difference in the pistons makes one think there is some "thump" coming soon.
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Now "Certified Scooter Trash"
2005 Vespa GT200
2011 PCX 125
2006 Fly 150 "BlowFly 200"
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Old 12-06-2013, 12:45 PM   #36
brianwheelies
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What are you doing about feeding this beast? Maybe a carb upgrade?
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Old 12-07-2013, 05:24 PM   #37
Yellow Jacket
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Well guys, I've hit a little bit of a snag on this project. For some reason Piaggio uses a 2 piece cast iron oil ring. I've never encountered this type ring. It looked like I was going to have a real problem trying to get the jug down over the piston. The ring just didn't want to compress into the groove. So I did a trial install with the jug on the bench. Cast iron is very easy to break. Yup, I broke the ring. New rings were ordered yesterday so project will have to wait until rings show up.
I did do some experimenting with a makeshift ring compressor and the broken ring and was able to get the piston into the jug. Wish me luck, new rings were $48.
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Old 12-07-2013, 05:29 PM   #38
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Broken from the factory? Are you not supposed to gap the rings?
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Old 12-07-2013, 05:56 PM   #39
Yellow Jacket
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No, I broke the ring while trying to get the piston into the jug. I always check end gap before assembly but only once did I find rings with too little gap.
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Old 12-08-2013, 02:20 PM   #40
MODNROD
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Originally Posted by Yellow Jacket View Post
No, I broke the ring while trying to get the piston into the jug. I always check end gap before assembly but only once did I find rings with too little gap.
Yep. I rekn there is a small cave somewhere of snarky little elves who design oil control rings differently just for the purpose of making the fukn things break as soon as you look sideways at them.
Maybe something off another piston would go easier, assuming correct ring depth and thicknesses?

As a good follow-up example of what you're describing, I had 3 tries at fitting some dumb-arse-design oil control ring to a KTM 640SM. Finally I gave up and rang the dealership, spoke to the workshop foreman. He sighs, swears, then says "Yeah OK bring it round, dammit". Not just me obviously!

I should also point out here that the oil control rings (available in individual packs really cheaply too) from a 6.0L LS-x Chebby go straight into a KTM 640 engine with a quick snip and file clean, fit into the barrel easy-peasy, and have WAY better leak-down when finished. Can't remember the GM part number, sorry.
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Old 12-08-2013, 06:03 PM   #41
driller OP
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Blowfly???



While we have a brief intermission, I thought some might want to know how this "Blowfly" name came about......

Clarence Reid is a songwriter/ entertainer of the raunchy sort. He has a gift of changing popular songs into crude "party" entertainment. As a child his grandmother overheard him singing a Chubby Checker hit with some pretty foul lyrics. She then told him "you is nastier than a blowfly". A cheesy "supervillan" outfit completed the transformation and the rest is history.
A scooter named "Fly" is just begging for something like this.
Your regularly scheduled programming will resume shortly.
__________________
Why did I wait so long to do this?
Now "Certified Scooter Trash"
2005 Vespa GT200
2011 PCX 125
2006 Fly 150 "BlowFly 200"

driller screwed with this post 12-08-2013 at 06:09 PM
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Old 12-08-2013, 06:37 PM   #42
Yellow Jacket
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A while ago I got to experience installing a 685 bore kit on a friends KLR. With a big bore the chamfer to help get the rings compressed and the piston into the bore is reduced. We just couldn't get the piston in. Finally we hit on using one of those big, almost 1/2" wide zip ties pulled very tight. Worked great on the first try.
I wonder if Chevy makes oil rings in 72MM? That is an interesting idea. Chevy rings are cheap because they make 50 billion of them and the aftermarket makers are numerous. When you're making a few thousand of something and you are the only one making them, you know what happens to price.

Yellow Jacket screwed with this post 12-08-2013 at 06:47 PM
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Old 12-08-2013, 08:33 PM   #43
acejones
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There is an old seafood restaurant down here on the Coast call "The Blowfly Inn".
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Old 12-09-2013, 02:42 PM   #44
driller OP
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Quote:
Originally Posted by acejones View Post
There is an old seafood restaurant down here on the Coast call "The Blowfly Inn".
Ahh, life in the South. We know blowflies down here.

No plans to change the head or cams. We may need to go with larger jets to make it happy.
This jug comes from the Liberty which we don't get here in the States.
Other options were the Malossi 190 kit which is popular but more $$. My parts source actually has/had a Polini kit that looked tempting, but only increased displacement to about 170 cc but claims more output than the Malossi.
All options directly fit the bottom which is the basis for the LEADER engine 125-200 cc by Piaggio.
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Why did I wait so long to do this?
Now "Certified Scooter Trash"
2005 Vespa GT200
2011 PCX 125
2006 Fly 150 "BlowFly 200"
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Old 12-10-2013, 04:37 PM   #45
driller OP
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Getting close...

We got the jug on and most of the engine back together today. Now to figure how to fit all the body panels back together.
Vic will have some pics and commentary soon.
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Now "Certified Scooter Trash"
2005 Vespa GT200
2011 PCX 125
2006 Fly 150 "BlowFly 200"
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