My vintage race project, yes... my first pictures are included Options

[brant]

The feet to this bracket are clamped to the muffler with stainless clamps.
my welding isn't up to this level and I didn't want the vibration to cause failures so I didn't do the welding.

The welding is amazing.
a guy in longmont runs an alloy speciality shop.
he is good enough that he does some helicopter work.

pretty:

[brant]

I have a few updates to add.
I have a few less than stellar pictures of recent developments.

First here is that muffler bracket installed.
saved a few ounces over our old one and should provide a more smooth aero shape under the car:

[brant]

Next is my clutch/flywheel upgrade.
didn't yet finish the install, but things are started and should be ready for the next race. Using a Tilton system, which hopefully will provide quicker acceleration-revs.

really excited to try this out and also nervous about the combo of using it with my new gearing:

[brant]

my crappy bathroom scale tells me its 14lbs with the complete flywheel, pressure plate and clutch. Not as light as I anticipated, but the big key should be "where" that weight is located.

front side:

[brant]

Here is the neat one...
got the new tranny..

really looking forward to trying this one out.
gearing is: F / J / O / S / V

should provide an awesome combo for both long and short tracks since all 5 of the gears can be actually used.

AJRS has tested this set up in bigger and much more powerful motors (including his own for 2+ years) so it should be amazing!

The specs really look decent and I'll post a chart. The MPH between gears looks promising:

[brant]

That was weird... I've never tried a chart before.

Anyways. The new tranny has a quaffe in it
We did a lot of research and actually found some information that the quaffe could potentially be better than a ZF style diff for a 914 track car.

guess time will tell

I'll not have reverse gear anylonger due to the active first.
infact the magnesium case has to actually be welded to make this work.

the case was quite corroded, and we were advised to provide some type of sealant to avoid further corrosion. This led to an interesting theoretical discussion about what color would shed heat best...

one theory is that silver reflects.
however, a lot of things that need to radiate instead of reflect are actually painted black. For example... radiators...

alot of the serious sand rail guys go with dark colored 914 tranny's...

anyways we decided to try black and see.
I doubt I'll ever be able to tell a difference
we used epoxy appliance paint:

[brant]

Update from doing a little wrenching.

got the old clutch out and the new clutch/tranny in.
haven't yet finished up installing all of the exhaust or axles, but its pretty close.
my next race in Hastings was postponed and I didn't get selected to run the vintage exhibition at the Denver Grand Prix (street course sounds so fun!)
So at least there is no time crunch to finish this now.

Anyways, I have a few extra pictures to preserve of the changes.
Here is the old clutch flywheel combo that came out:

[brant]

Its a stage 3 AJRS combo
a "window'd" flywheel
10lbs flywheel:

[brant]

We were running it with the 911S aluminum pressure plate/disc
The full set up was 20lbs.
(10 for the flywheel, 10 for the disc / pressure plate / throw-out / bolts):

[brant]

side by side:

[brant]

So the new flywheel is 6lbs, and the full assembly including bolts, weighs in at 14 total:

[Aaron Cox]

schwing!

nice parts!

[brant]

6lbs net... but most importantly all of the weight is moved inward and the mass doesn't reciprocate in as large of a circle:

[brant]

last couple...

here is a pic of the aluminum engine tray dad produced.
its for keeping dirt out of the engine bay:

[brant]

and finally the "after" shot of the aluminum front skid plate with battle damage.

here is what happens if you put 2 wheels off the outside of corner #7 at pueblo.
even worse, I bugger'd one of the pipes on the right bank header..

its still useable though
and "its just a fleshwound"

[brant]

Its time for a few more updates.
we did another corner balance with all of the changes over the last year.

we added weight with:
- TB differential
- aluminum motor pan
- aluminum skid pan
- wide band O2 sensor

Here is a picture of our innovate installed:

[brant]

and here is our read out. Its the XD-16 guage by innovate:

[brant]

A little bit better picture that shows out placement. I used it this weekend to rejet at a race in Hastings, NE.

works very well.
allows real time info that is far superior to seat of the pants jetting.

I had the car running the way I "thought" it should be... and then found out I was lean (14.0+) above 7000rpm. No way you could tell that without the data, as the car felt just fine:

[brant]

On the good side of the great weight debate... we did a few things during the last year to save weight. Such as:

- lighter clutch and flywheel
- new muffler bracket
- lighter air filters
- and this little hood project

Here she is unpainted:

[byndbad914]

Brant - looking good (IMG:style_emoticons/default/thumb3d.gif) So, two questions (maybe I missed this)

1. You mention doing a current corner balance, but what is the current weight of the car?

2. How much weight was removed from the hood (i.e. what was the weight before, then after the holes)? Curious as I may just stick with my nice stock hood instead of fiberglass if what you did really got the weight down...