Exaust help!!
#1
Exaust help!!
I have a '68 with a 302. It already has headers (although they are a little rusty and could use replacing, I don't have a lot of money for the time being). I want that classic Mustang sound, but very deep and very loud.
I know the H-pipe is what gives it the drone that I'm looking for (which I have). My question is pipe size. How big can I go?? I understand the physics behind it, and the bigger the pipe, the deeper the sound; but how big is too big? I really want a 3" for that deep rumble, but I - along with some friends of mine - have worries that it is too big, and I will lose back pressure and the noise level will actually be reduced.
I have a high rise air intake with the K&N air filter and a 650 Holly carb. I am putting super 40 flowmasters on to help with the volume level. I do not want to put glass packs on it!
I know the H-pipe is what gives it the drone that I'm looking for (which I have). My question is pipe size. How big can I go?? I understand the physics behind it, and the bigger the pipe, the deeper the sound; but how big is too big? I really want a 3" for that deep rumble, but I - along with some friends of mine - have worries that it is too big, and I will lose back pressure and the noise level will actually be reduced.
I have a high rise air intake with the K&N air filter and a 650 Holly carb. I am putting super 40 flowmasters on to help with the volume level. I do not want to put glass packs on it!
#5
I mean hes from AR, give me a break. Don't see where you mix that up with mass.
Only thought is he saw the most recent post in the reginal sections was about exhaust from mass so posted here?
That means he would of actually had to look and see he's posting in the REGIONAL section, in the MASSACHUSETTS thread, and think to himself "Yea this is a good idea"
OP, sorry for the rant, I can't for the life of me figure out how people post in the wrong sections, I apologize if you took any of this personally.
Only thought is he saw the most recent post in the reginal sections was about exhaust from mass so posted here?
That means he would of actually had to look and see he's posting in the REGIONAL section, in the MASSACHUSETTS thread, and think to himself "Yea this is a good idea"
OP, sorry for the rant, I can't for the life of me figure out how people post in the wrong sections, I apologize if you took any of this personally.
#7
I'm aware that MA is not AR. It's shoes and teeth that we lack down here - not maps. I honestly posted to MA because I couldn't see where AR had a regional thread and MA had the most threads and responses. Which led me to believe that there were more enthusiast that would try to help me.
Suppose I should have stuck to the south haha!
Suppose I should have stuck to the south haha!
#8
I'm aware that MA is not AR. It's shoes and teeth that we lack down here - not maps. I honestly posted to MA because I couldn't see where AR had a regional thread and MA had the most threads and responses. Which led me to believe that there were more enthusiast that would try to help me.
Suppose I should have stuck to the south haha!
Suppose I should have stuck to the south haha!
https://mustangforums.com/forum/classic-mustangs-16/
good luck
Last edited by shad2009; 06-17-2011 at 03:43 PM.
#9
I'm aware that MA is not AR. It's shoes and teeth that we lack down here - not maps. I honestly posted to MA because I couldn't see where AR had a regional thread and MA had the most threads and responses. Which led me to believe that there were more enthusiast that would try to help me.
Suppose I should have stuck to the south haha!
Suppose I should have stuck to the south haha!
As its been pointed out we do have our own classics section here, so I would look around there for exhaust threads. If you don't find what you're looking for, then make a new post.
Pics of car?
#10
I hate to use a Miata site as a reference, but this page discusses pipe diameter, exhaust velocity, back pressure and scavenging in a way that's as simple to follow as any writeup I've seen:
http://www.miata.net/garage/KnowYourCar/S4_Back.html
Since you car is cammed, and has more valve overlap than an average 302, the engine has a bit more time to move the spent gasses out, but if it were my car, I'd still be a bit conservative with pipe size. Scavenging helps, and dual 3" pipes will make for a pretty leisurely exhaust velocity.
http://www.miata.net/garage/KnowYourCar/S4_Back.html
Since you car is cammed, and has more valve overlap than an average 302, the engine has a bit more time to move the spent gasses out, but if it were my car, I'd still be a bit conservative with pipe size. Scavenging helps, and dual 3" pipes will make for a pretty leisurely exhaust velocity.