rh50 minor stock exhaust upgrade choices

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magnetb0y
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Location: St. Petersburg Florida

rh50 minor stock exhaust upgrade choices

Post by magnetb0y »

I've been kicking around upgrading the exhaust(s) on my two roughhouses.
They are derestricted, 7gm rollers, but otherwise stock.
My friend tells me to go with the standard scooterworks Prima performance:
https://www.scooterworks.com/Sport-Exha ... 12689.aspx
But I also found Malossi, Technigas and Polini:
https://www.scootertuning.ca/en/3017-exhaust-systems
and also found Gianelli?!?
https://www.ebay.com/i/162775278037?chn=ps

They all look comparable, I would assume that Malossi, Technigas, Polini and maybe Gianelli have some slight advantage over the Prima.
But they all appear to be the "just better than stock upjet to 90+" models.
I am just looking for a little more kick, but to go through all the work with about 5 choices in the same price point was curious if anyone had any experience with any other of these besides the Prima.
magnetb0y
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Post by magnetb0y »

so anyway, I bought the Polini based on being told that Polini, Malossi and Prima stock replacement style were almost identical, installed it today, doesnt fit well. think I have a leak. and I may try upjetting, not sure.
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Stanza
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Post by Stanza »

If you put on an aftermarket exhaust, be sure to upjet. The Roughhouse already runs on the hot side, and you don't want to pop that top end.
magnetb0y
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Post by magnetb0y »

Thanks! I did upjet to a 90, so far so good, re-tightened the flange. Now it seems like I might need to drop the variator. cant remember what I had 7s or 6.5s, needs to go down a half I think, low end a minor minor bog, but seems to be more midrange, havent been able to top it out yet.
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Stanza
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Post by Stanza »

If the low end is bogging, you may need to adjust the mixture screw (which is conveniently covered from the factory). Set it a little richer, and you should eliminate that bog.
magnetb0y
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Post by magnetb0y »

Is there a pic online where people break the cover off the screw? I mean, I reallllly don't want to crack my case to get at a idler screw. No siree bob.
magnetb0y
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Post by magnetb0y »

So I drove it some more and the bog seems less noticable, in fact it is screaming with this pipe!! I totlally recommend the Polini. The pickup is much quicker, I have stilll not had enough road to get a top speed but hit about 47 so far. Great pipe. Wondering if I should buy their variator as well.
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