Looks great, but, unless you've got the cam & head work to utilize all that
extra capacity, you're just wasting your time. Check out David Vizard's
"Tuning the A Series Engine". It's got a ton of useful information to help
you make intelligent, useful decisions on what to do to get a bit more (or a
lot more) "grunt" out of your Spridget engine.
Unless you don't mind sacrificing drivability, flexibility and practicality,
avoid the hit and miss approach of off the shelf, bolt-on modifications.
You really need to look at ignition (advance curve), exhaust (relieve as
much back pressure as you can....this can also include cam profile and
head/valve work) and induction (includes cam profile, head work,
manifolding, carburetion and air filtering as a complete, matching "set" if
you want to preserve drivability and gain "real world" performance
capability at the same time. You'll be amazed at what you can learn from
Vizard's book.
Bud Osbourne
----- Original Message -----
From: "Mark" <mark@nashvilletn.org>
To: "spridgets list" <spridgets@autox.team.net>
Sent: Monday, April 20, 2009 3:06 PM
Subject: [Spridgets] HS4's on 1257
> Anybody running a pair of HS4's on their 1275? Been thinking about giving
> it a try looking for a little more 'go'!
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