after building/porting the motor i asked colin if he woudl go to the dyno after the break-in was complete, i was curios to see what the stage1 6 port street port i have created would put down. i consider this stage 1 because it is the largest i would go on something where a steady idle at aroudn 1k rpm is required and where no significant changes in the way the car behaves are made, from a stock port motor. noise is kept to a minimum and streetabilty remained. there was nothign to tune the car with at the time, so this was just a baseline to see how the car is runing. colins next purchase toward controling the engine is a microtech standalone unit after which i am assuming we will hit up the dyno yet again and see what diffrences are made by tuning the car in better. this car was very lean at some points on the dyno and it would be nice to have an afc to atlest dial the fuel in a little better. well enouf rambling take a peek

owner: Colin Frayne

relevant mods:
s4 stock ecu no piggybacks, stock ignition timing
s5 rotors and counterweights
t2 exhaust inserts (rotor housing)
t2 intake manifolds(this didnt seem to affect power, except its like having the 6 port sleeves removed on the NA manifolds)
stage 1 street port
racing beat catback
racing beat header
non resonated midpipe 2.5"

 

nice numbers! I've seen rx8's dyno less

 

140rwtq not bad!

 

With the TII intake manifold, were they JB Welded and port matched? Were they just bolted on??

Thanks,
Derek.

 

yes port matched, but its not jb welded, there is more aluminum welded and then ported. i dont like jb weld a whole lot

 

Smooth graph. Keep it up Kahren!!

 

wow that is very impressive never seen anything like this b4,, everything off the stock ecu and 182hp, with only t2 manifold and racing beat exhaust, keep it up

 

Hey Kahren,

What is the effect on gas mileage? Would the car still do ok if kept under 4000? Or does it dump the whole tank out of the tail pipe with your modifications?

 

the gas milage is the same as reported, unless of course you get on it then its a little worse since teh car makes more power now.

i am going back to the dyno on saturday with this car, the owner got an afc for teh time being, sot the car doesnt lean out up top.

 

what does the porting look like....or is that secret

 

here is a pic node...
on the left, ported on the right stock.

 

here is an update...
https://www.rx7club.com/time-slips-dyno-128/na-6port-streetport-dynoed-195whp-update-418805/

 

Kahren's ports rock my socks.