RaceDynamix STi - Time Attack 2009

duncan · Post by **duncan** » Wed Jan 14, 2009 11:46 am

Mix is currently 40% and gains seem very worthwhile on the Subaru engine - I am not sure how limited by knock the skyline engine is but it has been good for a very decent gain for me.

Post by **Ben** » Wed Jan 14, 2009 3:55 pm

Loving the wide arch idea

sdminus · Post by **sdminus** » Wed Jan 14, 2009 9:57 pm

I seem to remember from some text books that there is a benefit from leaving the exhaust in the diffuser. May be a center exit would be better if you can tune the angle of the diffuser and shape of end fences

duncan · Post by **duncan** » Wed Jan 14, 2009 10:03 pm

sdminus wrote:I seem to remember from some text books that there is a benefit from leaving the exhaust in the diffuser. May be a center exit would be better if you can tune the angle of the diffuser and shape of end fences

I have seen that too somewhere Scott but buggered if I can find it now - everything I see now, such as work that Reverie have done in the wind tunnel, points to keeping the exhaust out of the diffuser area. Would be nice to get it right first time but I doubt it will be that critical at the level I am competing :lol:

duncan · Post by **duncan** » Thu Jan 22, 2009 7:30 pm

Got new tyres yesterday ... think they will be wide enough

Weird that 255/35/18 actually come up at 270mm wide, they are miles wider than current.

blacky · Post by **blacky** » Thu Jan 22, 2009 7:54 pm

NICE 8)

sdminus · Post by **sdminus** » Thu Jan 22, 2009 9:19 pm

My old rx7 had 255 on rear..

RX7 · Post by **RX7** » Thu Jan 22, 2009 9:30 pm

sdminus wrote:My old rx7 had 255 on rear..

Mine does, well it will when I replace the tyres on the Volks !!!

Is that 255s all round Dunk ?

pablo · Post by **pablo** » Thu Jan 22, 2009 9:33 pm

gary@apt · Post by **gary@apt** » Thu Jan 22, 2009 9:35 pm

man size tyres :-D :-D