Track Day Project

[tn325i]

That is impressive my friend.... Very impressive for a NA motor...

[Dyno4mance]

Just a quick update.....Just got off the dyno with the racecar and it is nearly ready for some track action...
I have a bit of partial throttle mapping left to do but I was quite happy with the results thus far
Car wieghs in at 2,480 lbs (1127kg for our metric friends)
Here are the dyno results in good ol HP to the wheels on a Dyno Dynamics Dyno (this equates to around 220 flywheel
And I have included a graph showing Kw for our Australian and S African friends....

[tn325i]

Haha, you are having a lot of fun.... Awesome !!!

[Dyno4mance]

A few more videos

http://www.youtube.com/watch?v=vNTGg8JeMG4

http://www.youtube.com/watch?v=oCzO_bIs00k&feature=related

http://www.youtube.com/watch?v=lO6qCu6k8hw&feature=related

Next up will be a local autocross before I hit the track proper....
Incar footage to come...

[markseven]

maybe, but not if you have a high enough redline, and a motor capable of making power up there. a schrick 288 is definitely capable of 7200rpm.

See below

valid points, but I haven't noticed anything with these, other than maybe weight. and they're still lighter than an equivalent street tire. technically, the 225/45s are undersized. I wouldn't mind either, really.

Some BMW CCA race drivers (some could compete on a professional level) can tell if a an extra pound in one tire will improve handling at a particular track or at an important corner. I'm not even close to that level, however, I did notice quite a difference between 205/45/16's and 205/50/16's. The 45's were much sharper than the 50's. Or it could be a placebo effect?

What would be an alternative to the 4:10....? 3:93 or 3:73 or even lower??
Finally got it running tonight...will be hitting the dyno tomorrow hope my problems are behind me now...

I think your engine's power band will help you decide which final drive is right for the tracks you run. My favorite track is Buttonwillow, a technical layout with a lot of corners. My M20's 177hp and 4:10 are perfect for this track.

[Dyno4mance]

A few vids as promised....

http://www.youtube.com/watch?v=UnswIsPFW6M

http://www.youtube.com/watch?v=JaXH8RfkErQ&feature=related

Now I need to get a good alignment and figure out a few gripes and I will be getting some incar footage soon....watch this space
It made 168 whp on our Dyno dynamics dyno with initial tune....Just for reference spec e30s usually put down around 137 -142 whp on our dyno
Cant believe how fast it revs....
Special thanks to tn325i for doing the closed course camera work :D:D

[tn325i]

Really glad to hear things are coming together now Andrew... I want to come down and get a ride in that car.... It is really incredible and you have done a fine job on it..

[Dyno4mance]

What would be an alternative to the 4:10....? 3:93 or 3:73 or even lower??
Finally got it running tonight...will be hitting the dyno tomorrow hope my problems are behind me now...

[nando]

With 220+ HP, the 4:10 may be too low.

maybe, but not if you have a high enough redline, and a motor capable of making power up there. a schrick 288 is definitely capable of 7200rpm.

Turn-in, additional weight, additional rolling resistance...

valid points, but I haven't noticed anything with these, other than maybe weight. and they're still lighter than an equivalent street tire. technically, the 225/45s are undersized. I woudln't mind either, really.

[2002maniac]

225/45/15 is the perfect size for E30's

[markseven]

You'll love the sound. Keep the 4.10s, too.

With 220+ HP, the 4:10 may be too low.

why didn't you go for the 235/50-15s?

Looks aside, I think the 235/50's would feel a little "sloppy" compared to 225/45's. Ultimate grip would be higher, but turn in and transition feel would suffer. I've run 225/50's on a 7" rim, and right now I have 195/55 Z1's-I greatly prefer the skinnier tire for overall track use. My next set will be the TR wheels with either 205/50's or 225/45's.

My opinion, FWIW.

+1

Turn-in, additional weight, additional rolling resistance...

[Dyno4mance]

This is an incredibly glorious build, absolutely incredible. It truly is an inspiration because when I graduate in a year this car is what I will be aspiring to build(though I doubt I'll get even close!).

Dan

Thanks for your your props....this is the only car I have built for a long time were all of the choices and decisions were mine....One of my favorites

[Dyno4mance]

any updates???


----------------------------------------------------------
DAMN SECHSAY!!!

No updates as I am having a lot of problems with the megasquirt that was built for me...car is still not tuned...I will post videos when I have them

[Spiff325iS]

This is an incredibly glorious build, absolutely incredible. It truly is an inspiration because when I graduate in a year this car is what I will be aspiring to build(though I doubt I'll get even close!).

Dan

[ikkitousen]

any updates???


----------------------------------------------------------
DAMN SECHSAY!!!