15.8 quater mile s5 streetport any good?
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Rotary Freak
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15.8 quater mile s5 streetport any good?
I am buying a s5 n/a engine that has been street ported but I was wondering how good of a street port it actually is. Then car was track and ran a 15.8 is that any good? It had a cone intake and a clutch with everything else stock including the exhaust.
#3
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Originally Posted by krazykoncepts
I am buying a s5 n/a engine that has been street ported but I was wondering how good of a street port it actually is. Then car was track and ran a 15.8 is that any good? It had a cone intake and a clutch with everything else stock including the exhaust.
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~16.5 depending on driver and conditions, could be more or less.
I hit 14.9 on stock port with 155k mile engine. Full exhaust, intake, weight reduction, ported manifolds, stripped 6pi system.
I hit 14.9 on stock port with 155k mile engine. Full exhaust, intake, weight reduction, ported manifolds, stripped 6pi system.
#7
Something is wrong. Most likely the driver. Hell you can run a 15.8 with a header and intake. Something mechanical could also be wrong.
Try to find out the trap speed, that should be able to clear up some stuff.
Try to find out the trap speed, that should be able to clear up some stuff.
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mines stock block and it ran a best of 15.75 i could have shaved a tenth or two off that even if my diff and clutch werent on the verge of crapping out (this was also before any of the weight redux in my sig). it realy is all in the launch. dont expect to see your cars lowest times until youve done about a dozen hard launches and realy get the right technique for your set-up down.
get an exhaust and intake on there, a streeport is going to waste without them
get an exhaust and intake on there, a streeport is going to waste without them
#14
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Stock exhaust really chokes rotaries. I'd bet you would lose at least a second in the 1/4 by swapping in something better. Just adding a racing beat header to my streetported n/a, even though I still had my krusty old stock main cat and cat back, was worth .6 seconds.
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I ran a 15.2 in my stock port s4 with only intake and eshaust. so 15.8 seems slow for the alread higher power s5 + a streetport. with intake exhaust(not cats) and a header you should be able to run solid 14s at least. You may also want to invest in a SAFC or standalone to get the full potential out of your motor since once you add some other mods it will most likely run rich
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