Stay tuned

[Jason@SportsCar]

Video is up from our SSC Nissan Sentra.

Philip (SportsCar's editor) is racing the Sentra we built last season, and followed me around for a few laps during the warm-up session. He got a great view of the rear tires leaving ground, but was a little to far back to get a good shot with the camera.

http://www.youtube.com/user/SportsCa.../0/3P2RnB1de1Y

In-car from his race:

http://www.youtube.com/user/SportsCa.../1/_wBj1UFXSGE

[BLAZINBLUEVITZ]

Originally Posted by Jason@SportsCar

Race ready



Got wide tires?

how come no MICROIMAGE stickers are on that thing???

[Jason@SportsCar]

Off to load the car up. Tomorrow it gets the aluminum flywheel and new clutch/pressure plate setup.

[Loren]

Didn't look like the rear end came up so much as the front end just DOVE. Maybe a little more compression damping (or spring rate) in the front is in order?

[cali yaris]

how does an aluminum flywheel fit into your class? I'm still so confused about what you can do and can't do.

[Loren]

Originally Posted by cali yaris

how does an aluminum flywheel fit into your class? I'm still so confused about what you can do and can't do.

Everything you ever wanted to know about SCCA Production class rules

[cali yaris]

Loren, I race in SCCA. I've read through the rules more than once. Why would I post the question if I could find it (easily) in the rulebook?

If Jason doesn't have time to answer, he won't answer, and that's fine. Seems to me, there has been plenty of helpful posting about keeping the car within the rules.

[Loren]

I looked at the link I posted and found the answer very quickly. Any flywheel the same size or larger than stock is permitted in HP. I don't understand your angst.

His flywheel will surely be within the rules for his class.

[Loren]

Upon further consideration, I think I see the problem. Garm, do you "race" with SCCA or do you "autocross" with SCCA? There's a big difference. Jason is building a "race car" in accordance with the SCCA "GCR" (General Competition Rules), which is the road racing rule book. I'm guessing what you've read is the SCCA Solo II rule book, which is a completely different animal and does not apply in any way to the car that Jason is building.

[kngrsll]

i really like NASA's TT rules... its a points based system. I am going to do a few events in TT-F this year,

[Jason@SportsCar]

Originally Posted by cali yaris

how does an aluminum flywheel fit into your class? I'm still so confused about what you can do and can't do.

Loren posted the applicable section, and as he inferred the Solo and Club Racing rules are typically different. Even more confusing in some cases due to the class acronyms being similar, but having different meanings - Solo P=Prepared, Club Racing P=Production.

However, in our case (HP limited prep, Level 2) our rule set is very similar to the GP Solo rules. Unfortunately the Solo Events Board elected not to allow the Yaris in GP, so we can not competitively race our car in HP trim in Solo - it goes to EP, where it is way under prepared, and way under powered.

In a nut shell:

Body - Car is gutted and has a minimum 6 point cage. On-board fire system, kill switch, race seat, 5-point harness, window net. Drivers and pass side windows must be removed. All other glass can be replaced with plastic, 1/8" for side and rear, 1/4" for windshield. Hood and hatch/trunk may be replaced with composite units. Bolt-on fenders may be replaced with composite ones. Uni-body (rear) fenders may be cut and flared, composite may be added. Crash support beams behind bumpers can be removed.

engine - Level 2 prep must keep stock throttle body and fuel injection (injectors, fuel pump and regulator can be replaced, you just cant change the TB or manifold) . We can do port matching, valve job, cams, compression bump with a limit set by SCCA (we still have not received our spec, but most every car can go +1 pt), over-bore, balance & blueprint. CAI, header, no emission, exhaust just needs to exit behind the driver and be under 103db @ 50'. Engine management is open.

trans - if we use a stock trans no issues, shifter is open, clutch/pressure plate and flywheel are mostly free (no carbon multidisc units). We can also change ratios and use dog engagement, but you get a weight penalty. Final drive is open. LSD is open.

brakes - must use OE front caliper. Front rotor can be changed to a two-piece (aluminum hat), but must be stock size, and can not cross-drilled or slotted. Rear may be converted to disc, but can not be larger than the front OE brakes, and the rear rotor must be a solid non-vented disc. Brake lines, pads and master cylinder are open.

Suspension Level 2 prep - Stock pick up points (you cant move the rear beam mounts like many Yaris owners like to do ), shocks are open, springs are open but must be in the OE location (this means no coil-overs in the rear, but you can use an adjustable perch fitted in the stock location). Swaybars are open. Bushings are open. Camber adjustment is open.

Wheels and tires - 15"x7" max wheel size for the Yaris, smaller is ok. Any tire that you can fit on the wheel, but the top of the tire must be covered by the bodywork.

Minimum weight for the Yaris in HP is 1900lbs (w/driver) using a stock trans.

There is more, but those are the basics.

[Jason@SportsCar]

Originally Posted by kngrsll

i really like NASA's TT rules... its a points based system. I am going to do a few events in TT-F this year,

The NASA system works well for the people who show up off the street with a car that is already setup. Take some time to look at the book and plan the build of a car from scratch, it will get expensive fast - especially if you take the time to test the various points combos to see which is the fastest.

With SCCA everyone in the same class gets the same mods. You can only spend so much.

[cali yaris]

Jason, thanks that is really clear.

Can you use TRD or solid engine mounts? Those work really well in my car.

Also consider the 23mm sway bar, it's +4mm over the TRD one.

[Jason@SportsCar]

Originally Posted by cali yaris

Jason, thanks that is really clear.

Can you use TRD or solid engine mounts? Those work really well in my car.

Also consider the 23mm sway bar, it's +4mm over the TRD one.

Yes, we can change the engine and trans mounts. I should have had them done while the clutch was being changed and the trans was out. Oh well, we can do them when we pull the motor later in the season.

We put an adjustable bar on the rear.

What are you doing posting on here... You should be in Fontana. KJ just brought his STX RX-8 by the house for a tire change, he killed his tires in the AM session. Now he is all set for Sun.

[cali yaris]

I should be out there, for sure! I'm going tomorrow.

The trans mount alone will make a very big difference and it's an easy bolt-on.

[Jason@SportsCar]

http://www.yarisworld.com/forums/sho...071#post449071

[Jason@SportsCar]

New hood installed this weekend, just a tick under 5lbs. I have not weighed the stock hood yet, so I don't know how much weight this saved.

Also replaced the wing windows with plastic.

edit: I just noticed how bad this makes the head light covers look now, I need to sand and paint them. :)

[Jason@SportsCar]

Going to take the Yaris up to Thunderhill for the Double National this weekend.

Currently five entries in HP, and the group up there is plenty fast.

We would have liked to have gotten more done since the last race, but the car is a little lighter, and we have made some small suspension changes. Should be fun.

http://www.sfrscca.org/component/opt...999999/cid,22/