Hello Maurice,
I have a downdraft on my 1275. It is important not to go too big.
IIRC, a 28/36 is about as big as you want. .. I had mine tuned by
pros on a dyno. without access to a bunch of jets (expensive) and
a lot of time (frustrating) they are very hard to set up, but if
done correctly, you should get ... more power on the top end,
less power on the bottom.. and decreased fuel economy.. 5% to 10%
or so.
My engine is now cold blooded, but once over 160 degrees, it runs
flawlessly. No off idle stumble and it idles at the same rpm no
matter the ambient temp, or engine temp...
After fiddling with SUs for years, I just got tired of it. For
some it's part of the joy...
YMMV
--
Best regards,
Bill L. mailto:pythias@pacifier.com
'66 Sprite MKIII HAN8L49403 "the red thing"
That's not line noise--my modem's speaking in tongues!
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