How will big cam respond to boost?
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How will big cam respond to boost?
I have a torquer v3 in my car with all the supporting modifications.
231/234 .644/.598 111lsa. How would this cam respond to say 7-8 psi? I know that people generally like lower tame cams for turbos but I was just wondering exactly how it would go?
231/234 .644/.598 111lsa. How would this cam respond to say 7-8 psi? I know that people generally like lower tame cams for turbos but I was just wondering exactly how it would go?
#2
That cam has a bit more overlap than you would want for a turbo setup. It would run fine, you would just lose some power due to boost bleed-off. There are more "efficient" cams out there for turbos.
#3
Originally Posted by Chewy72SS
That cam has a bit more overlap than you would want for a turbo setup. It would run fine, you would just lose some power due to boost bleed-off. There are more "efficient" cams out there for turbos.
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Originally Posted by engineermike
I don't think anyone has actually proven that. In every test I've seen, quite the opposite turned out to be true.
You'll see what I mean if it was a supercharger with boost controlled by a belt. Stock cam with 8lb pulley would make 8 lbs of boost.With the cam listed above boost would probly be 1-2lbs with the same pulley.Power would be about the same but the stock cam will have more throttle response.
So,my answer is why not put in a better turbo friendly cam? You spend all the $$ on a turbo setup but want a bad cam for the application. In the end the T3 just isn't efficient for a turbo compared to what is out there.
#6
Originally Posted by Slowhawk
Stock cam with 8lb pulley would make 8 lbs of boost.With the cam listed above boost would probly be 1-2lbs with the same pulley.Power would be about the same but the stock cam will have more throttle response.
Originally Posted by Slowhawk
So,my answer is why not put in a better turbo friendly cam? You spend all the $$ on a turbo setup but want a bad cam for the application.
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Ok thanks for the info. I was just curious, this would be next winter's project if anything. I am into trying new stuff too so i might give it a shot and if i dont like it... pfft cam swaps easy and now that i got all the supporting stuff it wouldnt cost too much.
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Originally Posted by engineermike
That's not necessarly true. When you install a larger cam, it will make less boost, but more power. This has been proven many times. Now, with a turbo, you install a larger cam, then boost holds the same because the boost controller and wastegate automatically adjust. Then you make even more power.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
In theory!
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Originally Posted by engineermike
That's not necessarly true. When you install a larger cam, it will make less boost, but more power. This has been proven many times. Now, with a turbo, you install a larger cam, then boost holds the same because the boost controller and wastegate automatically adjust. Then you make even more power.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
Again, I don't think anyone has proven that his 231/234-111 is actually a bad cam.
A more friendly boost Cam WILL make more midrange power than the cam listed.Will the cam listed work? Yes,any cam will pretty much work.
Do I have to prove it? No ,because I've already tested this stuff and proved to myself what I'm saying
I would only recommend the Cam above if the static compression is high.The lower DCR will benefit the boost.
#10
Originally Posted by Slowhawk
. . .I ran a similar Cam on a blower car that was built NA,then added a blower.It made the same peak but lost midrange power with the low boost which the Cam bled off.
For a turbo car, in the tests I've seen, every time overlap is added, they make more power. Keep in mind that totally different things are going on during overlap with a blower and a turbo.
Mike
#12
What convenient timing!
https://ls1tech.com/forums/forced-induction/678711-my-04-gto-76mm-set-up.html
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
https://ls1tech.com/forums/forced-induction/678711-my-04-gto-76mm-set-up.html
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
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Originally Posted by engineermike
What convenient timing!
https://ls1tech.com/forums/showthread.php?t=678711
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
https://ls1tech.com/forums/showthread.php?t=678711
346 LS1, 232/234-112 cam, 6 psi boost from a T76, ~640 rwhp.
I vote for using the cam.. also some of the best Ford turbo tuners use cams clost to this set up
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would the larger cam(although possibly flowing the same amount of air, and making the same amount of power) at a lower "boost guage reading" help to reduce the chance of getting detonation? or is detonation more based solely on total airflow going through the engine and actual AFR?
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The Torquer is not a good turbo cam due to overlap and reversion, remember exhaust is what drives turbos. That cam will work just fine with a blower though. I may be installing a procharger on my head/232/236 112 cammed car.
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Originally Posted by half-n-half
would the larger cam(although possibly flowing the same amount of air, and making the same amount of power) at a lower "boost guage reading" help to reduce the chance of getting detonation? or is detonation more based solely on total airflow going through the engine and actual AFR?