Hi Vigil
Here is my set up in my Bugeye - street use only, daily driver as much
as I can.
Engine was built by Bill Gilcrease at MinComp Racing Services in Costa
Mesa, CA. Bill only works on A-series, and is very opinionated about how
they should be built - a good source of information. He only does the
engine - carbs, manifolds, electrical, etc. is up to the owner. He does
advise against Webers on street cars.
1. My engine is a 1275cc block bored out to 1380cc - anything over
1380cc requires a longer stroke than the 1275cc crank. I am running a
single HIF6 (1 3/4") SU carb on an alloy intake from APT and LCB exhaust.
2. Bill stated that his engines will produce 110HP (at flywheel) & 102
ft/lbs torque. I have not have my bugeye on a dyno to check but I would
guess this would equate to about 80-85HP at rear wheels. Definitely no
problem with HP driving on the 5 Freeway.
3/4. After 2,000 miles I am getting about 30-32MPG, combination street &
freeway driving. This is with the Datsun 5-speed and a 3.90 rear end.
Some guys like to stick with the stock 4.22 rear end for work "gitty up"
at the lights, but a like the lower RPMs on the freeway.
The 5-speed makes the driving the bugeye a dream. If money is an issue,
I would keep the 5-speed, and build a 'hot' 1275 -1293 instead.
If you are interested in more specifics, I can dig out my invoices to
get details on the pistons, rings, pumps, etc.
Jim Rogers
San Juan Capistrano, CA
uniquelittlecars@yahoo.com wrote:
>Group - After maganafluxing 4 different 1275cc blocks at a friend work. i
>finally found a sound stock 1275cc block. I am glad he is a good friend and
>did have to waste my money checking all the blocks. I am not sure what the
>process cost. But i am sure it is not cheap. And yes he checked the crank too.
>
>
>I know a lot of people are running from 1275cc to over 1400cc motors. I have a
>few questions.
>
>1. How many CC motor would be a good number CC to build a motor for street use.
>2. How much HP will that number CC produce?
>3. What is the MPG for that motor.
>4.What rear end is the best to run?
>
>
>In the past i have built motors for other cars. Just never a A series motor. I
>am getting a 5 speed trans from a Datsun if that helps with your advice.
>I am sure the use of the car has a lot to do with how you build the motor. The
>motor i am going to build is going to be used as a every day driver. I am in
>California and I plan to take it on trips to shows in Arizona, other states
>and to Canada to visit friends. I figured i would take a poll before i started
>the process. I know a lot of you are going to come up with different numbers
>and that is Ok. I have also been told by some people "If i did it again i
>would build it different". I figured i would learn from others what they would
>do after building there motors and running them awhile. So any hints or advice
>are very welcome.
>
>Example: A friend has a pretty much full race Motor for the street. He said he
>would go with the bigger valves, head work, not as many CC's ( he is over
>1400cc), different pistons, (He is runnig race prepared pistons now), not use
>a Aluminum fly wheel or the Weber carb because it was a pain in the butt to
>adjust when he goes to different altitudes.
>
>Thanks In advance for all your sugestions.
>
>Vigil
>
>
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