Well Everyone seems to agree that the stock Solex air cleaner does not flow
very well. I bought a neato set of chromed 3" NISMO vel stacks and I am
finding out that they are jsut to darn big to use with any of the 'regular'
filter options.
Here's my plan. I will attempt to make a cold air box with fiberglass.
I am going to carve a form out of foam and then lay a layer of fiberglass on
it. I will then make a pretty straight shot to the front of the car with a
smooth tube and cap it off with a K&N cloth cone air filter. Of course I will
have to lose/relocate the wiper washer bottle and the rad overflow tank.
Does anybody have any thoughts on what the shape size of the
box should be??
What I would really love to do is make the box out of some kind of
clear plastic. That way you could see the neato triple chromed Vel Stacks.
Daniel 69 2000
SF CA
At 4:41 PM -0500 7/13/00, Hall, Phillip wrote:
>List
>
>On the subject of air boxes and under hood heat. I had a friend that had a
>full chassie dyno - one of the good computerized ones. We did several
>experiments with air boxes/remote filter/ fresh air and pulling right off
>the carb/supercharger which pulled in under hood heat.
>
>Pulling in cool air on some cars actually decreased HP Vs. using hot under
>hood air. This was because the ducting had elbows and was out of corrugated
>piping. This causes a lot of turbulence in the air flow. My 96 Dodge
>Dakota V8 was this way. If I pulled the piping to the front of the truck
>off the air cleaner and gained 5 HP. The biggest gain on this truck was a
>K&N filter - 7 HP. With a Borla exhaust it makes 200 Hp at the rear wheels.
>
>Another guy had a Vortec supercharged 351 in a ford truck. Same Hp without
>the air box (hot air) and with an air box (cool air). The air box used a
>flat filter and the piping was 15 inches long with one 30 degree elbow.
>After putting on a straight pipe and cone type of K&N filter his HP went up
>by about 10 to 320 HP.
>
>If using an air box the piping to the front must be as straight and short as
>possible. The piping must have a smooth interior. If not done well you
>may be shooting yourself in the foot.
>
>I wish he still had the dyno - my Roadster would be the subject of more
>experiments.
>
>Happy Roadstering
>Phil
>SEROC
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