Malossi BBK for People 50 2T

[chaz35]

Yes, I will add that one to my list.  Be sure to report how it works after you get it all installed.  Cheers

[paceneedsstides]

Rgr rgr I hit 63 today but sure that was on a long downhill

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[chaz35]

wow, that's fast...

[paceneedsstides]

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[chaz35]

pace, is that an app on your phone?

[paceneedsstides]

Yes Ulysses but it's only for android

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[chaz35]

I installed the 20mm intake manifold. Doesn't appear to be much difference between manifolds, but carb side does get rid of step down between 20mm carb adapter and approx 17mm OEM manifold.  I guess you could port match between the carb adapter and OEM manifold, but would weaken the manifold, just seemed easier to buy another part.  The opening into the reed cage appeared to be the same size on both manifolds.  I wasn't expecting much change in performance, but did compute approx 38% area increase between the opening of the 17mm OEM manifold and 20mm manifold.

I put it all back together and went for test ride.  Was pleasantly surprised, engine ran noticeably better, actually ran pretty awesome.  I think this is the 1st time I am starting to think I want to put BBK on Super 9 LC.  Up until now, Super 9 LC was always better ride compared with People 50 2T with BBK.  Although Super 9 LC doesn't have the great take-off BBK has, it was generally more fun to ride, had more consistent performance, better top speed, and no concern about overheating.

I guess the step between the 17mm OEM intake manifold and the 20mm intake adapter was doing something bad.  After my before and after test today, I can highly recommend it, was worth the $'s and work to get it installed.  Engine still runs hot, high CHT 418F, but cooler weather seems to be helping, and 20mm intake manifold seems to be going in the right direction too.  Before 20mm intake manifold, max revs seemed to be approx 9600, today with 20mm intake manifold max revs was 10,080. so significant increase.  I made no adjustments to carb, and it seemed to be about the same over rich tune, but just ran better.

I finally received Airsal gasket sets today, ordered 2 gaskets sets and one was correct, the other wrong, bummer.  Anyway, since still running hot and carb is still tuned too rich to really rev out like it should, I will test lowering compression by installing an extra head gasket.  Probably be a couple of weeks before I can get to it, but will report back test results after I make the change.  Cheers

[paceneedsstides]

Hey CHaz you still alive bro? Ain't seen no posts for a bit hows she running?

[chaz35]

Hello pace, thanks for interest, haven't got anything to report, haven't done anything else to it yet, have some plans, will post when I do something.  Cheers

[chaz35]

It's been awhile, but road P50 today for 1st time since 9-2-16.  I have been riding S9 a lot and doing other stuff, so haven't done anything different with the P50.  Weather is cooler, and made big difference in CHT, high was 370f, max rpms 10020.  Ran great, made me want to do BBK on S9 for sure.

Actually, took S9 out yesterday and was very windy, was really slowing down speed running into the wind, was thinking time to do BBK on S9, then rode P50 and was more encouragement to do BBK on S9.

Maybe the end of the road for P50 BBK project.  I have 4 scooters and something has to go.  Will probably put P50 back to OEM and put up for sale.  I really love the P50, but S9 LC seems like better scooter for many reasons.

If/ when I do BBK on S9 LC I will start another thread under Super 9.  Cheers

[paceneedsstides]

Can always send the P50 out here to NC for. . . .testing purposes. . .lol you did alot to it to get the BBK to perform how you wanted it to and I've not tried any of those yet. Mines running ok not great. Had to order another silencer for the NextR exhaust the other had ate itself up over the course of 10K miles and was obnoxiously loud. I think I need a new variator I'm having issues to get over 8800K rpm and feel the variator is sticking on bushing.

[chaz35]

hello pace, thanks for kind words, was a lot of fun, may still mess with it, is running great in cooler weather, just have a couple more adjustments to try...  Cheers