Well, I guess I have some explaining to do.
Clearly the autocross car is in some state of completion (finally got it going this past march). Id been starting and stopping with a build writeup to chart my progress, but the car is now running..no more "buildup" for the time being, so Ive been pretty uninspired to get that finished. Some people have spoken to me and mentioned that it would be nice to see what it took to get the car to this point so Im giving it a go once more.
So here it is....what it took to get from there....
AKA: Gavins SCCA DSP autocross build.
Youll have to bear with me while I attempt to do this writeup as itll be a bit unorthodox. Ive been building the car for the last couple years with a huge push in the last year to get things done. Except for a few folks who knew what I was doing with the car, Ive been keeping things under my hat and keeping the nose to the grindstone. Because of that Ive done a fair amount of things to the car without documentation and to do one big writeup is a bit daunting(maybe one of the reasons I just didnt have the energy to do this before).
The build process was very "organic" as one component choice affected the effectiveness/choice of other components. But I dont think I would be able to make the whole thing make much sense if did a "point a>z" explanation and it would be a mess to try to connect all the dots. With that in mind, Ill be doing the writeup in installments, going from component to component eating the elephant in small bits (so to speak). I think this will focus things a bit better than me going for the whole thing and hoping that it will all be cohesive.
So what am I doing?
to build an autocross car!! (well duh)
Ill be building what would be considered a “built to the rules, nationally competitive” 1st gen MX6 to be campaigned in SCCAs SOLO. The car will be prepped for competition using the ruleset in “Street Prepared”. The car itself is grouped with other cars with similar performance attributes in D-street prepared. The SOLO2 rulebook will be my guide in the cars .
http://cms.scca.com/documents/Solo_Rules/2009_Solo_Rules.pdf this is 2009.
A couple things that should be understood about the reading of the SCCA SOLO rulebook. The rules are allowance based (telling what you can be done) and not restriction based (telling you what cannot be done). It’s a very important distinction in the reading of the rules. Simply put, if it doesn’t say you can, then you cannot.
As with many preparation levels there are limits to what can be done. Street Prepared is a lower prep category (compared to Prepared or modified). The limits can seem restrictive, but for me, I actually like the guidelines. The rules force you into a “box” where you have to be a good reader and then be clever enough to get the full worth of the rule all while being rules compliant.
Another thing about the classing structure for the cars…SOLO2 gives every car a place to play. It does NOT guarantee competitiveness. Got a Renault Fuego ?...theres a place for you to run, but don’t expect a national trophy anytime soon. In any given class theres @2-3 top contenders (1st tier cars) then a small midsection of cars that are close to but not as fast as the 1st tier cars for whatever reason(tires, gearing, whatever), and theres “the rest”. A mass of cars that are either too unknown/unpopular/slow/etc. Trophy fodder in other words.
When building a car for a class, theres 3 types of builders.
1:Theres the ones that look at the existing top leading cars and build one of those. No reason to reinvent the wheel, go with a proven performer.
2: You have people who want to try something different and look for something they believe will “shake up” the status quo (and possibly change perceptions about what the car for the class is). Theres a risk to this as what looks good on paper sometimes doesn’t translate well in actuality. You have more of a chance for a dud than a winner.
3: Finally theres people who build the car they have/like. Generally, not a good idea if you are looking for a “national competitive” car.
Im somewhere between the second and third categories.
You are going to have to do a lot of reading here(sorry), because Im not going to try to rewrite all of this (Gavin = lazy), but heres the links to what has been done to the car in the past.
1st effort stuff:
http://www.mx6.com/forums/1g-mx6-other-performance/52979-gavins-all-out-suspension-mods.html (original suspension buildup, illuminas, cusco camber plates, ground control springs, urethane bushings)
http://www.mx6.com/forums/1g-mx6-other-performance/72127-battery-relocation.html (battery relocation)
http://www.mx6.com/forums/1g-mx6-other-performance/73922-heim-joint-swaybar-endlinks.html (solid swaybar endlinks)
http://www.mx6.com/forums/1g-mx6-other-performance/96667-sunroof-delete-other-weight-savings.html (sunroof removal, seat replacement, weight reduction efforts)
http://www.mx6.com/forums/1g-mx6-other-performance/73189-fun-rx7-rims.html (3rd gen RX7 wheels and fitment)
http://www.mx6.com/forums/1g-faq-engine/111547-msd-6a-installation.html (MSD igniton install)
http://www.mx6.com/forums/1g-faq-engine/110096-dual-oil-catch-cans.html (dual catch cans)
http://www.mx6.com/forums/1g-mx6-other-performance/89899-fun-swaybars.html (swaybar calculations)
2nd effort stuff:
http://www.mx6.com/forums/1g-mx6-other-performance/101199-gavins-all-out-suspension-mods-version-2-0-aka-how-make-car-unstreetable.html ( koni suspension, mazdaspeed camber plates, delrin suspension bushings, suspension geometry)
http://www.mx6.com/forums/1g-mx6-other-performance/170447-lightweight-alternator.html (lightweight alternator)
http://www.mx6.com/forums/1g-mx6-other-performance/163424-ccw-competition-wheel-post.html (16x9” CCW wheels, fender flares)
http://www.mx6.com/forums/1g-faq-transmission/125108-gavins-diy-gurumotorsports-differential-install-huge-lots-pics.html (GURU torsen diff install)
That’s all of that past. Ill be updating things to get to the present by doing individual chapters and breaking things down a bit. Again, by doing things in smaller chunks, I hope that things wont be too jumbled and confused. Itll also give me time to focus better on those subjects.
Next installation will be about what my competition looks like.