Ported exhaust manifolds
03-24-2005, 09:21 AM
#11
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Just placed my order for a set... Should have them early next week... Thanks for the reccomend Sol...
I felt that $150 for a ported set was a pretty good deal... I'm not going to throw $500-$700 on a set of headers... I'm not that hard care about making my car faster... But I like the idea of bringing up a few ponies and helping the fuel effiency... The diffrence most likely not be as great as say a GTP or SSEi but anything is a help... And heck I can't beat $150 for ported manifolds shipped to my front door...
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I felt that $150 for a ported set was a pretty good deal... I'm not going to throw $500-$700 on a set of headers... I'm not that hard care about making my car faster... But I like the idea of bringing up a few ponies and helping the fuel effiency... The diffrence most likely not be as great as say a GTP or SSEi but anything is a help... And heck I can't beat $150 for ported manifolds shipped to my front door...
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03-24-2005, 11:07 AM
#12
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Originally Posted by Allmachtige
For the labor that you have to go through when installing ported manifolds I suggest spending a little extra cash (maybe a weeks paycheck, depending) to just get headers.
03-24-2005, 11:54 AM
#13
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Originally Posted by big_news_1
Originally Posted by Allmachtige
For the labor that you have to go through when installing ported manifolds I suggest spending a little extra cash (maybe a weeks paycheck, depending) to just get headers.
And I'll suffer the scraped and a few cuts and install the manifolds myself... Should have seen me messing with the ones on the 91...lol
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03-24-2005, 02:59 PM
#14
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Certified Car Nut
Headers aren't going to "open it up too much". Especially tuned equal length ones.There will ALWAYS be gains from headers.
Mechanix gloves will help you guys out A LOT i'm sure.
Mechanix gloves will help you guys out A LOT i'm sure.
03-24-2005, 03:05 PM
#15
Senior Member
True Car Nut
Opening up the exhaust to a point where the velocity of the gases gets slower will hurt performance. Maybe not on the top end, but certainly your low end numbers will suffer. An L36 like mine would probably run slower in a 1/4 mile with headers than it would with PEMs.... at least that'* the impression I've been under for a while. If I'm way off base I apologize, but I think SLPs on a lightly modded L36 will give you a screwy power curve.
03-24-2005, 07:59 PM
#17
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Certified Car Nut
This is how I understand it, you only hit your torque peak once when dragging, and the rest of the race you're in higher RPM. That'* why most people run uncorked headers on good v8'*... Our upper RPM power is our engines biggest weakpoint too IMO. We can run with LOTS of people light to light, but on the freeway...
Headers give gains all over, because they "scavenge" where the cylinders are helping eachother.
93 manifolds do not need to be ported, as they were made correctly.
Our upper RPM power is our engines biggest weakpoint too IMO. We can run with LOTS of people light to light, but on the freeway...Headers give gains all over, because they "scavenge" where the cylinders are helping eachother.
93 manifolds do not need to be ported, as they were made correctly.
03-25-2005, 03:17 AM
#19
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Are you kidding, the Series II n/a manifolds are so crappy and mismatched, headers would be a big performance boost. You will probably gain low end if anything due to better scavenging.
03-25-2005, 11:45 AM
#20
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Originally Posted by 1997_LeSabre
Are you kidding, the Series II n/a manifolds are so crappy and mismatched, headers would be a big performance boost. You will probably gain low end if anything due to better scavenging.