Malossi BBK for People 50 2T

[chaz35]

pace cool vid, thanks for posting, Cheers

[chaz35]

mclark, pace has same engine Kymco Like 50 2T AC engine and is running cool.  I don't know why mine runs so hot, but eventually I will get it figured out.

I have seen at least one scooter with a side scoop to catch some air, have thought about doing it too, but haven't done anything yet.  Cheers

[blufx]

Wondering if you could increase the cooling capacity at all with a scoop of some sort or better fan. 

I had thought of going big bore until I read about your temps.

I have a Hoca 70cc BBK. You've seen the trials and tribulations I've been through. I finally discovered the exhaust was my problem, and managed to get it running pretty damn good. All this time my head temp was approaching 300. I installed my Techagas Next R yesterday. I have to say, I wasn't prepared for that. Over 50 on flat road. Haven't had enough time to play yet, but I'll let you know what the temp is later.

[paceneedsstides]

I've heard you want 350-375 degrees at WOT I keep mine around there but it can get hotter doing stop in go or long uphill stretches or just a really hot day.

[chaz35]

Ordered some Dellorto parts from treatland and dellortodirect.  Treatland parts came right in, no problems, still waiting on dellortodirect.  I did a search on dellortodirect reviews and got back some not so good info:  seems they are pretty slow to ship, zero communication, lousy customer service, but eventually stuff arrives.

I am stuck until dellortodirect parts come in, treatland doesn't have some of the parts I wanted, so have to be patient, ride my S9 instead.  Cheers

[blufx]

Malossi 319987

Chaz, do you have the specs, or dimensions of your Malossi piston? Specifically from the top edge to the center-line of the wrist pin. The compression height as they call it. I'd also like to see the intake port on the skirt, if you have a pic.

[paceneedsstides]

blue I may be able yo measure from my previous BBK that blew at 1000 miles due to user error lol. Chaz what did you order that you couldn't find at Treatland?

[chaz35]

Blu, I will have to check to see if I still have the piston.  I still have the cylinder and head, thought I might get another piston at some point and use the kit on another scooter.  Might be awhile before I can report back, going to be out for a week or so.

Pace, I ordered a needle treatland doesn't carry (W17) and some spares like barrel spring, bolt and nut that attaches carb to manifold (already lost my original), gasket kit, plastic needle plate (almost lost this already when shot loose while working on the driveway, lucky to find it).

If stuff from dellortodirect doesn't come in, I will probably convert carb to 2 cycle AN bushing and atomizer, see how it goes.  Cheers

[blufx]

blue I may be able yo measure from my previous BBK that blew at 1000 miles due to user error lol.

It's because of user error I'm looking for this. I finally got mine running good, then installed the Technigas exhaust that seemed to double what power it had. A couple days later, it quit. Seems my oil injector wasn't working right. I have a severely damaged piston. It's easy to find Hoca BB kits, but not so just buying a piston. I've found a couple that says it's a 47mm piston for the Hoca 70cc BBK on a Kymco People 50. But it shows the compression height at 17mm. That can't be right. I've measured mine as close as I can. I get 28mm from top edge to center-line of the wrist pin.That 17mm dimension would put the top of the wrist pin hole just under the second ring. But, the picture of the piston looks right (and everybody uses the same picture). Anyway, if I ever have to but another one it would be easier to get a Malossi. That is if it has the correct compression height and is ported in the same place. I ordered a Hoca and got something else. The port is much lower and compression height is 24mm instead of 28. I put it in just so I could ride for now. It has much less compression so I have no low end power, although it will eventually do 45 on the flat. My new Hoca will be here Tues.

[paceneedsstides]

I will check for you tomorrow and also post pics of the piston in all its ugly glory but if ig happens to you again go Malossi, Stage 6 or Polini they are worth the extra money and if you shop around you can get they reasonable like th Malossi cast iron at 114 or something like that at www.scooterpartsco.com

Sent from my SM-G900V using Tapatalk

[paceneedsstides]

AU you mean lol but yeah I know treatland has the clamp and clamp bolt and nut for intake manifold I haven't looked hard anough to see if they have the plastic piece to seat need into slide but I know they have a rebuild kit also

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[chaz35]

Yes, treatland has most everything for Dellorto, but the needle I wanted, so I ordered a few extra bits treatland also doesn't appear to have.  If dellortodirect doesn't eventually work out, I will try eurocarb next.  Yes AU lol's, was late last night, thought I might be confused?

Blufx, you may find Malossi pistons/ rings to be a little expensive.  Scooterpartsco had them very reasonable, but when I looked yesterday, I don't see them on their website.  I looked yesterday and saw a bunch of Hoca 47mm pistons on ebay for < $30, but maybe don't fix your kit IDK?  Seems like easy to stick these BBK's, my experience anyway, Pace would probably agree.  If you can, put Trailtech TTO CHT on it, may help you keep it alive better.  Good Luck.

[blufx]

Blufx, you may find Malossi pistons/ rings to be a little expensive.  Scooterpartsco had them very reasonable, but when I looked yesterday, I don't see them on their website.  I looked yesterday and saw a bunch of Hoca 47mm pistons on ebay for < $30, but maybe don't fix your kit IDK?  Pace would probably agree.  If you can, put Trailtech TTO CHT on it, may help you keep it alive better.  Good Luck.

I was trying to save money when I bought the Hoca BBK. Beginning to regret that now, but if a Malossi piston will work in the Hoca cylinder, I only have to buy it once, right? The Hoca pistons you saw on eBay are the ones I'm questioning. All of them state it will work on my scoot, but at the same time have compression height in the picture showing 17mm. If it is, there's no way it will run in my scoot. My piston measures 1.102" or 28mm from top edge to center of the pin. I have one on order now hoping it's a mistake.
PIC #1 Is off the eBay ad
PIC #2 Actual distance on my piston
PIC #3 Where the center of the pin hole would be if that 17mm dimension were right.

Help me out here. What the heck is all this: " If you can, put Trailtech TTO CHT on it, may help you keep it alive better."

Thanks,
Blu

[chaz35]

CHT measures head temp at the sparkplug.  Trailtech makes a nice one for approx $40, have to shop around for best price, I got one 20% off at treatland, see link

http://www.trailtech.net/723-et3

Good luck finding right piston, I had no idea "compression height" could be so different with same crank and rod?

[blufx]

I had no idea "compression height" could be so different with same crank and rod?

That's my point exactly. Without changing the height of the cylinder, how can that be? That 17mm either is a mistake, or it's not meant to be used on a Kymco.