P-Port Build
I'm really curious to see where the power band will fall with the longish split runners.
04-25-12, 12:46 PM
#54
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it should still do 300hp@9000, but it'll be around 280hp @7000rpm vs 340hp@9k and 240hp@7k for the shorter MFR lengths.
so imo its a good compromise, it should make it faster in the real world
04-25-12, 07:27 PM
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me too. the SAE papers says that the length will peak under 7k, but the diameter will help it over 7k, so its possible it'll have a really fat (120% ve) power curve in the 4500-7500 range.
it should still do 300hp@9000, but it'll be around 280hp @7000rpm vs 340hp@9k and 240hp@7k for the shorter MFR lengths.
so imo its a good compromise, it should make it faster in the real world
it should still do 300hp@9000, but it'll be around 280hp @7000rpm vs 340hp@9k and 240hp@7k for the shorter MFR lengths.
so imo its a good compromise, it should make it faster in the real world
If i can sort water leak
and get motor running and run in i will organise a dyno run just to see what it does, I already no the exhaust will hold it back some, and the intake size could be bigger and use a better quality air filter, somthing like this maybe :
And also maybe remake the UIM with bigger plenum ........
Hard to say what it's going to go like, But it's gota be better than the HBP, If it gets close to 200rwhp like this i will be happy.
04-28-12, 04:46 AM
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05-03-12, 10:21 PM
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Hope to get a road tune next weekend, Then hopfully clock up a few hundred k's before dyno, HP ? not sure, im not after a heap, Maybe around 200hp would be good ! But it's hard to say, My exhaust will restict it a fair bit i reckon and same with the upper lim and filter.
05-03-12, 10:57 PM
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Anyone interested : Spec's,
81 RX7 13bpp
12a front cover, Stock radiator and oil cooler
S4 6port plate's
S4 6port flywheel and clutch
S5 TII housing's (p-port done by CEM, Exhaust port done with pineapple template)
S4 TII rotating assembly, Balanced, (yep low comp rotor's)
2mm 3piece mazda steel apex seal's
Modded oil pressure reg (80psi at idle)
Bearing's, Shaft, clearanced, Polished
Custom lim with 2 ID1000 injector's
S4 TII uim, Custom 3'' inlet with cheap *** filter
Bosch fuel pump (out of a holden haha)
Stock fuel line's and D1 fuel reg 43psi
Locked dizzy 18* 10*split
Microtech MT4
Exhaust 2'' thick wall primary's into 2 resonator's into 2.5'' at diff into 2.5'' stainless muffler.
http://www.youtube.com/watch?v=BgEMRiW02yo&feature=plcp
81 RX7 13bpp
12a front cover, Stock radiator and oil cooler
S4 6port plate's
S4 6port flywheel and clutch
S5 TII housing's (p-port done by CEM, Exhaust port done with pineapple template)
S4 TII rotating assembly, Balanced, (yep low comp rotor's)
2mm 3piece mazda steel apex seal's
Modded oil pressure reg (80psi at idle)
Bearing's, Shaft, clearanced, Polished
Custom lim with 2 ID1000 injector's
S4 TII uim, Custom 3'' inlet with cheap *** filter
Bosch fuel pump (out of a holden haha)
Stock fuel line's and D1 fuel reg 43psi
Locked dizzy 18* 10*split
Microtech MT4
Exhaust 2'' thick wall primary's into 2 resonator's into 2.5'' at diff into 2.5'' stainless muffler.
http://www.youtube.com/watch?v=BgEMRiW02yo&feature=plcp
05-09-12, 04:35 AM
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Hope to get a road tune next weekend, Then hopfully clock up a few hundred k's before dyno, HP ? not sure, im not after a heap, Maybe around 200hp would be good ! But it's hard to say, My exhaust will restict it a fair bit i reckon and same with the upper lim and filter.
so are we going for a skid or are youo going to chiicken out 
then i can get my wastegate put in and make some real hp 
05-10-12, 01:03 AM
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.... You got your new gate already ?? Time for you to hurry up then
05-10-12, 01:20 AM
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might be sunday afternoon might have cows going so got to find out tonight
im waiting on parts still but the 60 will be here tomorrow i hope so its a weld job then might as well re do that dump and bring on the 600
im waiting on parts still but the 60 will be here tomorrow i hope so its a weld job then might as well re do that dump and bring on the 600
05-20-12, 05:16 PM
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Yea or one nite matt see how thing's go, Get your's sorted first
Cheer's ! 10mm Mild steel face plate and Stainless steel tube's/bend's for the runner's and top plate
Cheer's ! 10mm Mild steel face plate and Stainless steel tube's/bend's for the runner's and top plate
06-02-12, 10:30 PM
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Got the p-port tuned today, Had a good drive in it, After some more run in time i will put more timing, Better fuel and leaner tune into it, It starts very well, Idle's way better than it did (@14afr's too), And at 100kmph/5th gear it's so smooth just cruising, No bucking or pig rooting, Nice just like my 12a extend port did ... At wot Under 6k it's a bit sluggish over 6k it gets a 2nd wind and want's to go, All in all happy as with this cheap PP build so far haha
06-03-12, 01:33 PM
#74
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that actually is very civilized! it doesn't even sound like its that loud.
you could probably move the point where it comes on by changing the intake and or exhaust length, but hey just enjoy driving it!
you could probably move the point where it comes on by changing the intake and or exhaust length, but hey just enjoy driving it!
06-03-12, 09:46 PM
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It is quite quiet inside the car just cruising, But outside and when your foot is up it, It's noisey and idling in the driveway does nothing to make the neighbour's happy eaither haha.
Yea i want to change intake and exhaust a bit as well, But will drive as is for now to clock up some k's
Yea i want to change intake and exhaust a bit as well, But will drive as is for now to clock up some k's