i have a question how much boost drop will i see with long tube headers. my set up is tvs with 13psi pulley and a 10:1 compression engine. and also do cams really lower boost as well because I'm thinking of doing set of cams
Boost is simply a measure of resistance. Headers, exhaust, cams etc can lower boost because they make a engine more efficient. A engine is nothing more than a big air pump..........if you grab a straw and blow as hard as you can, only so much air can get through right? That backpressure is "boost". But grab a garden hose and you can do it
much easier......so you can actually move more air, but your "boost" numbers will be lower because there isn't such a restriction.
Make sense?
Boost is simply a measure of resistance. Headers, exhaust, cams etc can lower boost because they make a engine more efficient. A engine is nothing more than a big air pump..........if you grab a straw and blow as hard as you can, only so much air can get through right? That backpressure is "boost". But grab a garden hose and you can do it
much easier......so you can actually move more air, but your "boost" numbers will be lower because there isn't such a restriction.
Make sense?
Voila!
Rule of thumbs, about 2 PSI for LTs.
Boost is simply a measure of resistance. Headers, exhaust, cams etc can lower boost because they make a engine more efficient. A engine is nothing more than a big air pump..........if you grab a straw and blow as hard as you can, only so much air can get through right? That backpressure is "boost". But grab a garden hose and you can do it
much easier......so you can actually move more air, but your "boost" numbers will be lower because there isn't such a restriction.
Make sense?
So does the loss in boost mean using a smaller pulley to compensate is a good idea?
So does the loss in boost mean using a smaller pulley to compensate is a good idea?
Also, 13psi from a 2.3L blower is much more air than 13psi from a 1.6L blower.
Same way it's funny in the turbo world when a guy says something like "ya I'm running 40psi bro" and acts all cool and show off like about it, but they don't understand that 40psi through a 2" t2 is literally like 12psi through a 3.5" t4.