Bohrn
20+ Year Contributor
- 1,247
- 0
- Apr 28, 2002
-
Chilliwack,
hey, so there I was off work for the day, and I had it in my head to do the BSC mod that we all hear about. "Cool" I think, "free horses!!"
Off it comes, out comes the powerful light and some basic tools. Shine the light in the ends of the tubes in question, but for the life of me, I can't see no stinkin plastic restrictor!! I poke and prod, but come to the conclusion that someone before me had pulled it already. "Dang" I think, "I wanted to do that"
Then I get to thinking. The theory behind this is all about air flow right?? Well, what if I increase the flow even more?? Should be good eh??
So out comes the drill and 2 bits. One is a 3/32 and one is a 7/64. Also a long finishing nail that can reach the bottom of both tubes and fit loosely. Gently put the nail down the hole of one of the tubes, and carefully mark it at the end of the tube. Transfer this length to the 3/32 drill bit. Mark the deapth with some tape wrapped around the drill bit. Carefully, making sure you are going in straight, slowly drill out the tube. Go in and out a few times to make sure you get it all. Never go full power on the drill, you don't want to heat anything up, or otherwize damage it. Repeat this procedure on the other hole. And then do both holes again with the 7/64 bit.
As the original restricted hole is less than 1/16, and the unrestricted hole is less than 3/32, you can see that we have gained over 4 times the pipe diameter compared to the bone stock, and increased the unrestricted size by more than the original restrictor size itself!
Now, I don't yet have a boost guage to tell you what sort of pressure raise there actually is, nor do I have a stock BCS to replace my modded one with when the Autometer gets here, so I can't really tell you what to expect. But the seat of the pants Dynamometer tells me its quicker, pulls harder, pulls higher in the rev range, and spools quicker. As well it whistles more.
Plus the other test instrument that I rely on for this sort of thing is in full working order. My GRIN!! it was ear to ear for my first test run. There is a twisty road very near my house that I use for this sort of thing, and by the "Grin-o-meter" was pegged the whole ride!
And incase you are thinking that I was just not remembering the last ride for what it was, and the comparison was a bit off, well I had just driven the car home from a long work day, and I took a bit of a tour to let off some steam. And I was just thinking that it needed a bit more up top, past 5k. It kinda died there, and in 4th and 5th it was kinda doggy. Not no more, I was impressed.
Of course, the rest of the car is still stock, and I will notice more when I do the other mods.
And for those with boost controllers, this won't do you a dang bit of good as your BCS is in the spare parts box, but for those of you on a budget or keeping your car stock, then this should help you.
Also, I won't be held resposible for damage, tickets, you sleeping on the couch, or any other negative happenings.
Best of luck and have fun
Off it comes, out comes the powerful light and some basic tools. Shine the light in the ends of the tubes in question, but for the life of me, I can't see no stinkin plastic restrictor!! I poke and prod, but come to the conclusion that someone before me had pulled it already. "Dang" I think, "I wanted to do that"
Then I get to thinking. The theory behind this is all about air flow right?? Well, what if I increase the flow even more?? Should be good eh??
So out comes the drill and 2 bits. One is a 3/32 and one is a 7/64. Also a long finishing nail that can reach the bottom of both tubes and fit loosely. Gently put the nail down the hole of one of the tubes, and carefully mark it at the end of the tube. Transfer this length to the 3/32 drill bit. Mark the deapth with some tape wrapped around the drill bit. Carefully, making sure you are going in straight, slowly drill out the tube. Go in and out a few times to make sure you get it all. Never go full power on the drill, you don't want to heat anything up, or otherwize damage it. Repeat this procedure on the other hole. And then do both holes again with the 7/64 bit.
As the original restricted hole is less than 1/16, and the unrestricted hole is less than 3/32, you can see that we have gained over 4 times the pipe diameter compared to the bone stock, and increased the unrestricted size by more than the original restrictor size itself!
Now, I don't yet have a boost guage to tell you what sort of pressure raise there actually is, nor do I have a stock BCS to replace my modded one with when the Autometer gets here, so I can't really tell you what to expect. But the seat of the pants Dynamometer tells me its quicker, pulls harder, pulls higher in the rev range, and spools quicker. As well it whistles more.
Plus the other test instrument that I rely on for this sort of thing is in full working order. My GRIN!! it was ear to ear for my first test run. There is a twisty road very near my house that I use for this sort of thing, and by the "Grin-o-meter" was pegged the whole ride!
And incase you are thinking that I was just not remembering the last ride for what it was, and the comparison was a bit off, well I had just driven the car home from a long work day, and I took a bit of a tour to let off some steam. And I was just thinking that it needed a bit more up top, past 5k. It kinda died there, and in 4th and 5th it was kinda doggy. Not no more, I was impressed.
Of course, the rest of the car is still stock, and I will notice more when I do the other mods.
And for those with boost controllers, this won't do you a dang bit of good as your BCS is in the spare parts box, but for those of you on a budget or keeping your car stock, then this should help you.
Also, I won't be held resposible for damage, tickets, you sleeping on the couch, or any other negative happenings.
Best of luck and have fun
