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Ahhh. winter time and no yard work… what to do with your time?
last year it was my attempt at installing a PCV valve/system to my car. i can’t say it helped anything.. or hurt anything for that matter. but it took up some time and was a fun project. in the process i learned a little about PCV systems. So what this year?
My projects have a few goals:
After some thought i decided this years project would be a cold air box. After all they were good enough for a 100M. these cars have a cold air hose already incorporated to the front of the car. Albeit for the cockpit. i had not seen one for a tri-carb so it was basically a start from scratch project.
My first thought was to build it around the existing air breathers and have them hold the box to the carbs. connect the other side of the box to the cold air hose and done…i soon realized the problem… space! the air breathers are too big to build around and have the box fit in the space allowed.
So then i needed to figure out what i would use for an air filter. Most modern cars use the round filters at the front of the hose. i decided i did not want to look at the filter in the engine bay. i hoped i could reverse the round filter and put it in my air box. then have the butt end stick out of the box and connect my cold air hose to it. Again the size of the filters and the room available did not seem to work out. the filters were too deep and/or too wide.
that left me with a flat filter. Now, how big? time for some research. there are a few websites to figure out how many Sq inches of filter you need for an engine. one being the K&N website. after trying a few formulas on different sites i determined the amount of sq inches or sq cm, i would need. from there i went to Autozone and started looking over the wall of filters. i knew from some initial measurements i would like to keep the filter to no more than 4-1/2” high. this allowed me to miss the fender brace and also stay below the hood. once i found a filter with a width i could use, i looked at some different lengths. i felt i would be ok with a 12.5 inch length but i went to the next longer one for a little safety factor.
then it was time to start building. knowing my filter width gave me the final height for my box. from there the length of the box was decided by the carbs. the depth was then the biggest factor. this is where starting with cardboard becomes a good idea. you tape up a box; see if it fits; then make some cuts and try again.
last year it was my attempt at installing a PCV valve/system to my car. i can’t say it helped anything.. or hurt anything for that matter. but it took up some time and was a fun project. in the process i learned a little about PCV systems. So what this year?
My projects have a few goals:
- do not hurt the car
- can be removed
- and this is important… get me out of the house
After some thought i decided this years project would be a cold air box. After all they were good enough for a 100M. these cars have a cold air hose already incorporated to the front of the car. Albeit for the cockpit. i had not seen one for a tri-carb so it was basically a start from scratch project.
My first thought was to build it around the existing air breathers and have them hold the box to the carbs. connect the other side of the box to the cold air hose and done…i soon realized the problem… space! the air breathers are too big to build around and have the box fit in the space allowed.
So then i needed to figure out what i would use for an air filter. Most modern cars use the round filters at the front of the hose. i decided i did not want to look at the filter in the engine bay. i hoped i could reverse the round filter and put it in my air box. then have the butt end stick out of the box and connect my cold air hose to it. Again the size of the filters and the room available did not seem to work out. the filters were too deep and/or too wide.
that left me with a flat filter. Now, how big? time for some research. there are a few websites to figure out how many Sq inches of filter you need for an engine. one being the K&N website. after trying a few formulas on different sites i determined the amount of sq inches or sq cm, i would need. from there i went to Autozone and started looking over the wall of filters. i knew from some initial measurements i would like to keep the filter to no more than 4-1/2” high. this allowed me to miss the fender brace and also stay below the hood. once i found a filter with a width i could use, i looked at some different lengths. i felt i would be ok with a 12.5 inch length but i went to the next longer one for a little safety factor.
then it was time to start building. knowing my filter width gave me the final height for my box. from there the length of the box was decided by the carbs. the depth was then the biggest factor. this is where starting with cardboard becomes a good idea. you tape up a box; see if it fits; then make some cuts and try again.
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