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Spec 7 and IT7 rules

Old 11-13-11, 02:29 AM
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Spec 7 and IT7 rules

Alright trying to start politicing for the local Spec7 rules to be changed to allow us to run non stock radiators and was wondering if people could post their local Spec 7 or IT7 rules for compairson and hopefully help my cause
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Old 11-13-11, 08:15 PM
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In Midiv SCCA the IT7 rule set is the same as ITA. What ever you can do in ITA to an RX7 is legal in IT7.

Basically the intent behind the Midiv IT7 class was to get cars out of the garage and on the track by allowing them to competitive in a class. RX7's are not competive in ITA anymore and we had enough of them in the region that the separate class was warranted. It was popular for a few years but interest has dropped of late. This could be due to the economy as well.

Google Spec 7 and Pro 7 and you may be able to get rule sets that are in other areas of the country. I found the Pro 7 rule set that is/was used in California several years ago.

All that said, if you and enough of your competitors feel that an alternate radiator is warranted, ask for it. Your series will suffer and the regions will lose money if guys are killing their engines or not running their cars because of over heating issues. Its not like you are trying to change an class that is recognized by the National office.
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Old 11-13-11, 09:37 PM
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pro7 says:

"6.25. Cooling
6.25.1. Any radiator may be used provided it fits in the stock location and requires no body or structure modifications to install. Fans may be removed or added. Thermostats are unrestricted. A/C systems may be removed. Oil coolers may be added or substituted. Location within the bodywork is unrestricted, provided that it/they are not mounted within the driver/passenger compartment.
6.25.2. The heater core, blower fan and motor and all associated hoses may be removed, but none may be modified."
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Old 11-13-11, 10:49 PM
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Knew the jist of what Pro7 says (one of the people on my side is a former Pro7 driver and his car is still being run locally in ITA) and something simmilar is actully what Im shooting for. Participation wise were #3 for the seasson in this division (which unfortunatly isnt saying much as only 1 class got triple digit car counts this year) only problem we have is consistancy and a lot of our top runners sold their cars recently and either quit or moved to SM so were going to have a fair chunk of new guys next seasson.

In short sounds like so far MidDiv and Cal both allow upgraded radiators, 2 down 6 to go (figuring its run in the remaining 6)
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Old 11-16-11, 07:18 AM
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TX - http://txspec7.com/Rules/tabid/93/la...S/Default.aspx

11. Cooling system must remain operable and unmodified, with the exception of the following specifically allowed modifications:

a. radiators may be recored provided they retain the factory tanks and mounts

b. 1983 and later cars may use the earlier oil cooler system, providing the early radiator is used.

c. 1981 and 1982 cars may use the later oil cooling system, providing the later radiator is used.

d. Aftermarket cooling fans (electric) are permitted.
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Old 11-16-11, 10:23 PM
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Do you see overheating issues as one of the reasons why the class is losing drivers?
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Old 11-17-11, 01:17 AM
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Were not losing any drivers just changing them (some of the experienced are moving to SM but their cars have already been sold and raced) however at the temps were seeing during a typical seasson not having motors will probbly become a huge problem here shortly (240+ water 270+ oil for the top runners)
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Old 11-17-11, 08:03 PM
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Yeah that is too hot. Those kinds of temps are ruining your engine.

The thing is that in my experience a bigger aluminum radiator may not solve your issue. In my case I had to run a big radiator and two OE cooler to get temps under control.

I would ask for Improved Touring radiator and oil cooler allowances. I would frame your request as being a way to help the drivers make their engines live longer.
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Old 11-17-11, 10:15 PM
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I figure IF I can get the radiators in itll help then from there Ill work on the oil coolers however its not looking good for any rule changes for next seasson
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Old 12-14-11, 04:54 PM
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Socal rules basically say you can't change radiator for Spec7. Pro7 is as described above. You can check the rules for specifics on the CalClub site.

If you are running either Spec7 or Pro7, but especially Spec7, if you are having overheating problems, it is because your cooling system isn't up to snuff. Spec7 in particular doesn't allow changes to carb,timing or engine so horsepower is limited. Pro7 is a litte looser, but not a lot more heat being generated.

My 82 pro7 was getting warm last summer. I installed a new radiator ($140 from Rock Auto and arrived in two days) and the problem went away. Later I changed out the drive pulleys to slow down the water pump and things got even cooler. The SoCal Spec7 and Pro7 rules allow changing the drive pulleys. I'm actually running my pro7 in ita now.

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Old 12-15-11, 07:44 AM
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The Washington DC region Spec7 rules say:

Any radiator may be used, provided it can be mounted in the
original location and requires no body or structure modifications. The stock fan and fan
clutch may be removed or modified. A single electric fan may be used for radiator cooling
if the stock fan is removed. The electric fan assembly (including fan and shroud) must not
exceed the dimensions of the radiator. The stock fan shroud may be removed. 1983 and later RX-7s may use the earlier oil coolers. Any oil cooler of the same dimensions as the
stock cooler or smaller may be used. Screens of one-fourth (1/4) inch minimum mesh may
be mounted in front of the radiator and/or oil cooler and contained within the bodywork.
The air inlet to the radiator may be sealed with caulk or tape
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Old 12-17-11, 03:19 AM
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Originally Posted by Carl View Post
Socal rules basically say you can't change radiator for Spec7. Pro7 is as described above. You can check the rules for specifics on the CalClub site.

If you are running either Spec7 or Pro7, but especially Spec7, if you are having overheating problems, it is because your cooling system isn't up to snuff. Spec7 in particular doesn't allow changes to carb,timing or engine so horsepower is limited. Pro7 is a litte looser, but not a lot more heat being generated.

My 82 pro7 was getting warm last summer. I installed a new radiator ($140 from Rock Auto and arrived in two days) and the problem went away. Later I changed out the drive pulleys to slow down the water pump and things got even cooler. The SoCal Spec7 and Pro7 rules allow changing the drive pulleys. I'm actually running my pro7 in ita now.

Carl
Around here timing is open, have spec headers and cold air intakes (google a Randall intake and thats essentially what were running) so horsepower is up over stock. Also being Colorado and 5,000' elevation (+/-500ft) the air has less cooling ability and then adding in 90-100+ ambient temps overheating on stock is bound to happen. Were not allowed to change the pulleys so cant use that to help cool it either, one of the local ITA car is a former Pro7 car thats had no changes since it came here (unless something broke) and it overheats with an Aluminum radiator and better oil cooler setup but to a less extensive amount (220 water max vs 240-250). And unfortunatly by the sounds of it our radiator rules wont be changing for next year either
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