97C5inSD

I was Looking throught the Nasa TT rules and Nasa-X rules which is there autox And they want a person to take a 7 point Hit for adding a dry sump to your car and then a 14 point hit if you move the motor.

So i can see the points for moving the Motor but just adding a dry sump? Is there really that much of a performance boost from adding a dry sump system? without utilizing the ability to relocate the motor?

And well i know there can be some horsepower gains or i have read there is but is there really that much?

Sorry if this is a dumb question

davidfarmer

Increases crankshaft horsepower by decreasing windage

Creates crankcase vacuum which decreases blowby and intake charge contamination and decreases detonation

Jaymz

The points system is only going to matter if you are running TTA/PTA or TTB/PTB. I doubt that anyone in those classes are running a drysump anyway. If you are running ST2 or ST1 then the points don't count as it's all power to weight based.

I agree that some of the TT/PT points modifers are out of wack.

67Ranger

I can add some power, but if you dont want to take the hit, get an accusump. Gives you some of the safety, without the cost, and without being a true dry sump.

mashinter

The dry sump allows lowering the car?

AU N EGL

IIRC lowering the engine, thus lowering the CoG.

dry sump pan is much shallower then a normal oil pan

97C5inSD

No the Dry Sump allows you to Lower the motor down farther into the engine bay since you don't have as big of a oil pan on it anylonger. So hence changeing the weight distribution

exracer28

I wish NASA would take a look at thier rule book as a new to NASA person and clean up the point adders. If I have a dyno HP of XXX and weigh XXXX why worry about mods that make HP. That is already included in the dyno. That would include dry sumps, exhaust and other mods that result in increased power. Some classes allow averaging F & R tires sizes and other classes do not. There also seems to be a difference between regions. Some places have classes that others do not. Areo mods that do make a difference in lap times are not point adders.

Overall it could be easier to build equal cars and with time I hope they get there.

gkmccready

Once you're in Super Touring this is exactly what you get. A strict power:weight with no points to worry about.

L98Terror

You are correct it would make it easier but it would also make it easier to cheat. Those HP/lb rules were added as a supplement so that people didn't use loopholes to hake a high powered TTA-F/PTA-F car. If you want simple rules rule ST2/ST1/SU.

Once you start running you will be very happy that the PT/TT rules are there, you can be competitive without spending a ton of money. I was told the Dry Sump rule was more of a way to keep costs down.

Myself I'm looking to get back to TT/PTA just because of the limiting rules, I would love to just maintain.

Also if the went had HP/LB only rule you all would be spending $$$ on dyno time and so would NASA. Currently PT a-f has a HP/LB max but no dyno is required.

mrc24x

Performance Touring is the easiest and cheapest class to race a Corvette.


Matt

Kubs

I am trying to build my car for TTA because it seems like ST1 and ST2 are for deeper pockets. I really dont want to cut up the interior to do a full cage for PT but that may happen once I start TTing!

mashinter

Agreed. My question was related to the points for just the dry sump; don't move the engine. Are the points there because with a dry sump you can lower the car more than if you have a wet sump?

97C5inSD

Havein the Dry sump dose not allow you to lower the car anymore the you could prevouisly but you still get assesed the points just for the dry sump

67Ranger

Honestly, the only reason I could see there being points for a dry sump system would be to encourage keeping the cost of the class down. Since this is a lower budget (as if that really exists in racing) class, so they could just be trying to encourage people to spend less money, or if anything, discourage people from spending more money.