Re: Sleeper A55 ideas

EH 📣FCC of the QCB /
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> Daniel '' Wrote:

> -------------------------------------------------------

> Enlarging the ports and matching the flanges will get you a little, but

> if you do not alter the port durations the gains will be negligible.

> Just re gearing, a side bleed estoril with an upjet will get you into

> the high 40s. With a proper port job and a solid tune a stock a55 top

> end can get you u into the mid 50s.

Exactly. Don’t just bore the holes bigger. I have seen lots of kits where people just made bigger holes and fucked up the port timing to where it was running better stock.

https://www.mopedarmy.com/forums/read.php?7,4153651,page=2

Andy and I did some porting a few years ago on some A3s. I actually did a port map and did one for what I usually do with an A55 cylinder. It may be useful. (edited)

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