Valentine,
Why would you not bore the engine?
Any machine shop worth their salt will bore at least .010" just to true up
the cylinders. The bore is needed because with prolonged use, many miles,
the engine rings wear the cylinder walls into an elliptical/egg shape, that
new rings alone will not cure.
Over boring is a good thing, as long as you have the room and your walls
aren't too thin. Most of your high performance 4 & six cylinder engines have
a bore wider then the stroke.
Andrew Griffith
-----Original Message-----
From: Valentine [SMTP:valntine@mail.ptd.net]
Sent: Friday, April 16, 1999 4:44 PM
To: spridgets@autox.team.net
Subject: Engine Spec advise wanted
I am going to rebuild a 1275. I have a block from a 74 and plan to
rebuild with stock pistons and bearings.
I am looking for a little increased horsepower for street use only.
It
is my current understanding that the better the engine can breath
the
more power I can extract from it.
I plan on improving the cam with a mild street cam and doing some
intake
mods (ala Visard and Stapelton). I also would like to install
headers
and a less restrictive exhaust than stock.
I want to keep the SUs, for now but may go to a weber later on.
So, I need some opinions, (lots of them).
Some questions to get you started;
Will the mods I have stated above be useful without over-boreing the
engine?
What is the best choice of Cams? Headers? exhaust?
What other work is warrented?
Keep in mind I am striving for a good street runner not a racer.
Thanks,
Kevin
63, 71 and 74 Midgets
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