1973 240Z and Lotus SCCA Production Racing Rules

[proracer]

Hello,

Does anyone have an SCCA Production Racing Rules Book? I am looking for the rules relating to the 1973 240Z and the Lotus Europa.

The information needed is the race weight, engine size, wheel and tire size, etc.

Does anyone have a dyno read out for the 240Z for that time period? Or, do you have a dyno of an engine built to the 1973 specs? If so, please email a copy.

Can you help?

Thank you, Jim Pennington jpenn35633@yahoo.com

[John Coffey]

From the July 1 1972 CP rules:

Datsun 240Z Sports

Capacity: 146 cu. in.

Official Weight: 2018 lbs.

Wheel Diameter: 14"

Rim Width: 5.5"

Lotus Europa Twin Cam

Capacity: 1158 cc

Offical Weight: 1338 lbs.

Wheel diameter: 13"

Rim Width: 5.5"

[derherr65]

Any other information would be very helpful. I am also trying to start Class C production racing. I'd like to eventually take a 2.4 liter 911 Porsche.

[derherr65]

Lag, duplicate entry. Deleted.

[JLPurcell]

Hello,

Does anyone have an SCCA Production Racing Rules Book? I am looking for the rules relating to the 1973 240Z and the Lotus Europa.

The information needed is the race weight, engine size, wheel and tire size, etc.

Does anyone have a dyno read out for the 240Z for that time period? Or, do you have a dyno of an engine built to the 1973 specs? If so, please email a copy.

Can you help?

Thank you, Jim Pennington jpenn35633@yahoo.com

Having raced "C" back in the day then upgraded the car to IMSA specifications, I have some correct parts for you project if interested send me a PM. jlp

[gira]

I believe it's completely achievable to get 260 hp out of a CP engine build. We already do it. Also, I don't think the 2.4 liter Porsche is in the CP class according to the rules in SVRA. That's a good thing because they make tons of power and can get down to weight which is very hard for the Z. The Z is CP trim must weigh 1968 lbs. Try to get there. It's probably best to take the penalty and the brake upgrades. I have found that there's a lot of tolerance at these event because they like the numbers, BUT-UNTIL-WAIT, don't beat the Porsches. Oh my, once you start beating these guys, all heck breaks loose and you might as well put you car in the hauler because about ten rich guys will be crawling under it. It happens to me almost every time I go race against them. People in general, except Z enthusiasts, have forgotten how fast a well prepared and well driven Z car is.....

Go get em!!

Greg Ira

[ZCCOR#109]

Yo Greg,

Thanks for carrying on the Z car tradition in SCCA racing. Are you to be at RA in EP again this year?

[jmark]

I believe it's completely achievable to get 260 hp out of a CP engine build. We already do it. Also, I don't think the 2.4 liter Porsche is in the CP class according to the rules in SVRA. That's a good thing because they make tons of power and can get down to weight which is very hard for the Z. The Z is CP trim must weigh 1968 lbs. Try to get there. It's probably best to take the penalty and the brake upgrades. I have found that there's a lot of tolerance at these event because they like the numbers, BUT-UNTIL-WAIT, don't beat the Porsches. Oh my, once you start beating these guys, all heck breaks loose and you might as well put you car in the hauler because about ten rich guys will be crawling under it. It happens to me almost every time I go race against them. People in general, except Z enthusiasts, have forgotten how fast a well prepared and well driven Z car is.....

Go get em!!

Greg Ira

Greg,

Tell them how the Porsche drivers had you bumped in class so you were out there with Audi R8's etc. at Sebring! The Porsche guys need to remember the Z cars regularly kicked their butts back in the day.

[26th-Z]

I don't recall the 2.4 L Porsche 911 racing in CP back in the day. But I DO know what you are talking about, Greg. Keep the faith!

[gira]

Hi Lowell,

We will be at Road America again this year with a lighter more powerful car. We are also using the newer Hoosier radials, which is a sharp contrast to what has been used for many years. Anyway, I think we still have a decent shot at a win. We just need a little bit of luck.

Greg