Stock Supercharger ported
Joined: 12-30-07
Posts: 14,079
Likes: 197
From: NEPA
This is one mod I would never do to a blower.
Senior Member
Joined: 06-03-07
Posts: 14,142
Likes: 71
From: NY
The ONLY time I have seen a ported supercharger provide ANY gains, was by porting the INLET (leaving the outlet alone) AND using an LS4 throttle body. Even then they gained like 5whp and I believe it was all in the upper RPM ranges. Torque actually decreased by doing this.
Senior Member
Joined: 06-03-07
Posts: 14,142
Likes: 71
From: NY
"The low graph is my original blower with a 2.6
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley."
Comparing two ported blowers is not a good case here. They could still be lower #'s than stock... you would never know.
Waiting for Stock blower dyno, then SAME BLOWER ported your way. Post results. Thanks
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley."
Comparing two ported blowers is not a good case here. They could still be lower #'s than stock... you would never know.
Waiting for Stock blower dyno, then SAME BLOWER ported your way. Post results. Thanks
"The low graph is my original blower with a 2.6
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley."
Comparing two ported blowers is not a good case here. They could still be lower #'s than stock... you would never know.
Waiting for Stock blower dyno, then SAME BLOWER ported your way. Post results. Thanks
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley."
Comparing two ported blowers is not a good case here. They could still be lower #'s than stock... you would never know.
Waiting for Stock blower dyno, then SAME BLOWER ported your way. Post results. Thanks
Senior Member
Joined: 06-03-07
Posts: 14,142
Likes: 71
From: NY
You guys post it, I don't see any graphs like that on this site.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
Joined: 12-30-07
Posts: 14,079
Likes: 197
From: NEPA
Senior Member
Joined: 08-31-12
Posts: 3,154
Likes: 54
From: MD
You guys post it, I don't see any graphs like that on this site.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
I have seen people get gains from porting their m62's though, I think arm reported getting 20hp out of porting but I'm not sure... But even 5-10 whp plus lower iat temps are definitely worth the mod. I wouldn't plug the silencers though lol
You guys post it, I don't see any graphs like that on this site.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
because zzp failed at dose not make it thats how it is euthinasia and flit proved it worked so did alan the dyno sheets are on here go find them see for yourse
there is no advantage to porting the tvs there is the m62
There has been proof posted. Below is what ARM did on the same day, same dyno.
I should be getting my m62 ported back next week. If I have the time and find a local dyno, I will do a dyno comparison before and after the ported blower.
More gains will be had the smaller the pulley. I will probably see more gains then the OP. A slight boost in whp and torque and lower intake temps sound good to me.
Thought I would add this as well. This test was done with the car still strapped down, swapped blowers on the rollers.
The low graph is my original blower with a 2.6
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley.
----And side note, these graphs are in std. My 309 graph in the dyno thread was a 2.5, ported outlet, done the same day, but I accidentally uploaded the sae graph before seeing most people use std. Std on the 2.5 was 317
I should be getting my m62 ported back next week. If I have the time and find a local dyno, I will do a dyno comparison before and after the ported blower.
More gains will be had the smaller the pulley. I will probably see more gains then the OP. A slight boost in whp and torque and lower intake temps sound good to me.
You guys post it, I don't see any graphs like that on this site.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
I know what works and what doesn't. I have been working on the SC cars since I bought mine in 2006. I told you guys what I know, and even a vendor that's been working on these cars since the beginning of the ss s/c's release in 2005 has told you that porting is a bad idea and yet you're still debating.
Your turn to post results.
Thought I would add this as well. This test was done with the car still strapped down, swapped blowers on the rollers.
The low graph is my original blower with a 2.6
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley.
----And side note, these graphs are in std. My 309 graph in the dyno thread was a 2.5, ported outlet, done the same day, but I accidentally uploaded the sae graph before seeing most people use std. Std on the 2.5 was 317
Senior Member
Joined: 06-03-07
Posts: 14,142
Likes: 71
From: NY
A 3-5 degree difference in temps is not worth it at all. The only posts I see are people on RLF who did blower work back in 2010, only to come back a year later and regret doing their work.
Again, I see nothing on here about a stock blower dyno vs ported blower, same dyno same blower same day. HP Tuners graphs and "it feels faster!" don't count.
Again, I see nothing on here about a stock blower dyno vs ported blower, same dyno same blower same day. HP Tuners graphs and "it feels faster!" don't count.
Senior Member
Joined: 06-03-07
Posts: 14,142
Likes: 71
From: NY
There has been proof posted. Below is what ARM did on the same day, same dyno. I should be getting my m62 ported back next week. If I have the time and find a local dyno, I will do a dyno comparison before and after the ported blower. More gains will be had the smaller the pulley. I will probably see more gains then the OP. A slight boost in whp and torque and lower intake temps sound good to me. Thought I would add this as well. This test was done with the car still strapped down, swapped blowers on the rollers. The low graph is my original blower with a 2.6 Inlet opened for ls4 but not polished. High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley. ----And side note, these graphs are in std. My 309 graph in the dyno thread was a 2.5, ported outlet, done the same day, but I accidentally uploaded the sae graph before seeing most people use std. Std on the 2.5 was 317
I'm done arguing. Believe what you want.
Just let it be, I took a 3 day ban over this subject. lol Only advice I can give is go with the suggestion from the people who have the best track record for performance mods that add proven power, you wont see ZZP or OTTP porting blowers on this forum.
Joined: 05-18-11
Posts: 39,564
Likes: 87
From: West Chicago, IL
It was worth it in my case. we did port the inlet and outlet just slightly and used some sort of jb weld high temp stuff. but i sold that blower because my rotors were screwed (from my intake rubbing a hole into itself and shooting metal schards through it and the whole engine probably 
)
now im running hockeymans old m62 with i think 40k miles of ported/polished/plugged greatness. screams like a banshee idk how much power it really makes though so i can only go by seat of the pants
) now im running hockeymans old m62 with i think 40k miles of ported/polished/plugged greatness. screams like a banshee idk how much power it really makes though so i can only go by seat of the pants
It was worth it in my case. we did port the inlet and outlet just slightly and used some sort of jb weld high temp stuff. but i sold that blower because my rotors were screwed (from my intake rubbing a hole into itself and shooting metal schards through it and the whole engine probably )
now im running hockeymans old m62 with i think 40k miles of ported/polished/plugged greatness. screams like a banshee idk how much power it really makes though so i can only go by seat of the pants
) now im running hockeymans old m62 with i think 40k miles of ported/polished/plugged greatness. screams like a banshee idk how much power it really makes though so i can only go by seat of the pants
For instance... Project: Plug silencer holes and new m62 porting
I have also ported supercharger cases in the past as well, but the difference in porting I found was minimal at best, lower IAT's, less boost at lower rpm's, the trade off wasnt worth it. Which is probably exactly what zoomer is referring to. I know steigmeier ports have been guilty of this as well. I know a few ford lighting owners locally that had similar issues.
A 3-5 degree difference in temps is not worth it at all. The only posts I see are people on RLF who did blower work back in 2010, only to come back a year later and regret doing their work.
Again, I see nothing on here about a stock blower dyno vs ported blower, same dyno same blower same day. HP Tuners graphs and "it feels faster!" don't count.
Again, I see nothing on here about a stock blower dyno vs ported blower, same dyno same blower same day. HP Tuners graphs and "it feels faster!" don't count.
I have also ported supercharger cases in the past as well, but the difference in porting I found was minimal at best, lower IAT's, less boost at lower rpm's, the trade off wasnt worth it. Which is probably exactly what zoomer is referring to. I know steigmeier ports have been guilty of this as well. I know a few ford lighting owners locally that had similar issues..
its all in the outlet flit and euth proved that also
Senior Member
Joined: 06-03-07
Posts: 14,142
Likes: 71
From: NY
The only thing you're comparing results against is another number that came from a modded part. There's no baseline from a stock blower and then a baseline from a ported blower, same car same dyno and that's what will prove a real gain.
same car same dyno same day is what was done
I don't even get how this is an argument. Same car, same day, same dyno. Blower 1 inlet was matched for the LS4 and nothing else. Blower 2 the inlet was stock but with a spacer used for the LS4. If anything matching the inlet for the LS4 on blower 2 will pick up even more hp. It's not like a stock TB was used for pull 1 and LS4 for pull 2.
I don't even get how this is an argument. Same car, same day, same dyno. Blower 1 inlet was matched for the LS4 and nothing else. Blower 2 the inlet was stock but with a spacer used for the LS4. If anything matching the inlet for the LS4 on blower 2 will pick up even more hp. It's not like a stock TB was used for pull 1 and LS4 for pull 2.