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Topic: IMCA Souithern Sport Mod Changes for 2012/Looks closer to Northern Sport M
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Page 1 of 2 of 28 replies
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November 10, 2011 at
12:52:14 PM
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This message was edited on
November 10, 2011 at
12:52:37 PM by David Smith Jr
VINTON, Iowa (Nov. 9) – Conventional flat tappet cam and lifters are in, the vacuum rule is out for Smiley’s Racing Chassis Southern SportMods in 2012.
“The hydraulic lifters and vacuum rules had evolved to the point where neither was serving their original purpose,” explained IMCA Vice President of Operations Brett Root. “Engine builders found ways around them and they became antiquated and too expensive.”
Use of the 500 cfm Holley carburetor will be required for all drivers competing with a claim engine. That pending change had been announced last fall.
Maximum length for header collectors will be nine inches, for turn downs 10 inches.
As is the case with IMCA Modifieds and Karl Chevrolet Northern SportMods, use of the new MD3 aftermarket nosepiece will be optional.
Also of note:
*Claim engine drivers can use any one inch adapter but no throttle bore adjustable carburetor spacers will be permitted.
*Carburetor gaskets can have a maximum thickness of 1/10 an inch.
*Steel roller tip rocker arms will be allowed.
David Smith Jr.
www.oklahomatidbits.com
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November 15, 2011 at
02:09:01 PM
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Can you say "Champ Sprints".
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November 15, 2011 at
06:56:21 PM
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I like this because a carb adjustment can make a difference in the vacuum, so I'm glad that rule is gone.
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November 16, 2011 at
10:11:33 PM
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How many tracks round here will go with that ???? All our tracks do thier own thing, gotta change half the car to go any where !!!
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November 17, 2011 at
12:19:51 PM
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What started out to be a class that you didnt have to put a ton of money in the motor has just gone out the window. I do agree that the vacume rule was getting past all the tech and did not help the class but to have to put $ 6500 to $ 7500 and after talking to some racers thats on the low side to run close to the front has got to change. You want to build a motor with some longevity I understand that part but its getting out of hand and before long we will all willbe part of sinking what would have been a great class. What ideas are out there to fix this, lets have some input. An have a SAFE and THANKFULL Thanksgiving. Thankfull that we can talk about racing and have the freedome to do what we love to do and thats race. Thanks to are miltary.
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November 17, 2011 at
12:54:22 PM
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I believe this is a good move after giving it some thought.
The reason some of these motors are getting so high was because of the cam shafts. Motor builders are coming up with their own cam specs that are pulling vacumm but are also hard on parts.
When you buy a high dollar motor your buying their cam basically.
I for one feel like the IMCA has always looked out for the racer better than any other organization.
The rocker deal is also good because you don't have to replace them every 6 to 8 races, if your running a cam that's on the limits then you know the springs and rockers have to be changed often as well.
I hope everyone around here looks at using them.
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November 17, 2011 at
01:20:00 PM
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Just a wild thought, maybe there ought to be a couple of guys from each track (Lawton, Meeker, Ada, Ardmore, etc.) and cities (Enid, Tulsa area, etc.) get calling their fellow drivers and try to get everybody on the same page. Same with both Muskogee tracks and Salina High Banks.
I am sorry people but there needs to be no 360 mods or e-mods or whatever they call them in the east part of the state since they seem like full blown modifieds.
Anyhoot, call your fellow drivers and try to get them all on board - or most of them of course. Then take it up with the promoters you run with to try to get this deal mandatory and in their rules for 2012.
I am not in the click with NCRA but from my understanding they are going to be IMCA rules. I will leave that statement up for some conversation I am sure.
My point is that this division needs to go back to being affordable for everybody as it is starting to get out of hand - if not already.
David Smith Jr.
www.oklahomatidbits.com
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November 17, 2011 at
06:16:55 PM
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Reply to:
Posted By: Sportmod5 on November 17 2011 at 12:54:22 PM
I believe this is a good move after giving it some thought.
The reason some of these motors are getting so high was because of the cam shafts. Motor builders are coming up with their own cam specs that are pulling vacumm but are also hard on parts.
When you buy a high dollar motor your buying their cam basically.
I for one feel like the IMCA has always looked out for the racer better than any other organization.
The rocker deal is also good because you don't have to replace them every 6 to 8 races, if your running a cam that's on the limits then you know the springs and rockers have to be changed often as well.
I hope everyone around here looks at using them.
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Mark, the part where you stated "after I gave it some thought" describes my thoughts perfectly. At first I thought it was ridiculous, then I thought about it and realized that its gonna eliminate the $10,000 cam shaft that comes with a motor for free. Make sense? I haven't always been a huge fan of imca but I give them a pat on the back for this one. I think the collector rule is kinda dumb because now my headers are illegal but that happens I suppose. I just hope they dont change much more in the years to come, they have a badass class goin right now!!
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November 17, 2011 at
06:20:23 PM
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I think one of the main deals is it may cost drivers now but if rules can be left alone in the long run it will be a good deal.
David Smith Jr.
www.oklahomatidbits.com
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November 17, 2011 at
09:22:50 PM
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its really a good deal in my opinion.. just need good tech guys that will crack the whip
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November 17, 2011 at
09:29:11 PM
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Reply to:
Posted By: choate7c on November 17 2011 at 09:22:50 PM
its really a good deal in my opinion.. just need good tech guys that will crack the whip
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Do not have a dog in this fight. However, need good tech guys in all classes.
"The ultimate measure of a man is not where he stands
in moments of comfort and convenience, but where he
stands at times of challenge and controversy."
Martin Luther King, Jr.
Erich Petersen
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November 17, 2011 at
09:37:21 PM
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Amen to that especially tech guys that know how to use tools preferably !
winners dont cry when they lose , they go back to the
drawing board and come back for round 2 !
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November 21, 2011 at
09:46:08 AM
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As an engine builder that builds primarily ASCS 360 and 410 sprint car engines, I built an IMCA Southern Sport mod in 2010. Trying to find a cam for this stinkin vacuum rule was driving me crazy!! I changed cams last winter and made significant gains in horsepower and torque, as business was busy and it was too damn hot for this fat boy to race in 2011 so it sat in the shop all year long!! I winterized the engine and was all set for 2012..................until IMCA made this change. So a call to Comp Cams for a new bumpstick, lifters, and rocker arms last Monday, took engine out Saturday and got engine ready for cam change. Over at shop yesterday to degree cam, check valve to piston, take inner springs out, lash valves and prime engine. Dyno over Thanksgiving weekend! So about $500.00 later were good to go. Gawd I love rule changes
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November 21, 2011 at
03:02:18 PM
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Reply to:
Posted By: Wesmar on November 21 2011 at 09:46:08 AM
As an engine builder that builds primarily ASCS 360 and 410 sprint car engines, I built an IMCA Southern Sport mod in 2010. Trying to find a cam for this stinkin vacuum rule was driving me crazy!! I changed cams last winter and made significant gains in horsepower and torque, as business was busy and it was too damn hot for this fat boy to race in 2011 so it sat in the shop all year long!! I winterized the engine and was all set for 2012..................until IMCA made this change. So a call to Comp Cams for a new bumpstick, lifters, and rocker arms last Monday, took engine out Saturday and got engine ready for cam change. Over at shop yesterday to degree cam, check valve to piston, take inner springs out, lash valves and prime engine. Dyno over Thanksgiving weekend! So about $500.00 later were good to go. Gawd I love rule changes
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Sorry the heat and business kept you from racing Kelly however, you were the best damn "cone worker" we have seen this side of the Mississippi. We might use your excellent skills again next year should you be so willing 
Happy Thanksgiving to you and everyone at the shop.
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November 21, 2011 at
05:30:24 PM
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Cams aren't going to drop the cost of motors. Those 10000 dollar motors wont be cheaper now that they have solid cams. I do like that the guy building his own wont have to spend 350 to 400$ on a cam and lifters. They have already let the motor rule get out of hand. Better stuff means more RPM and more horsepower. Guys with money will always run out front in that situation.
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November 21, 2011 at
06:00:52 PM
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I am shocked we actually have a topic for positive discussion.
David Smith Jr.
www.oklahomatidbits.com
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November 21, 2011 at
06:45:24 PM
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I know the engine builders around here won't like this, but the problem would be solved if they imposed the crate engine rule. Engines are sealed and tamper proofed. All have the same components. Intake to pan with distributor.
602 circle track engine from Summit $3,800 330hp
603 circle track engine from Summit $5,000 355hp
604 circle track engine from Summit $5,000 400hp
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November 21, 2011 at
07:55:42 PM
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Good point about the crate engines, but I for one have alot of parts and pieces an don't spent anywhere near 3000$ on my motors. Just go back to cast pistons stock crank and rods coat will go down and competition will be more equal.
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November 21, 2011 at
08:32:35 PM
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That's the way it used to be when I started racing, but I hate to say those days are gone. The crate rule would make it easier to tech the cars and would level the playing field. I usually spend less than three thousand dollars per engine as well, but more guys spend $10,000 per motor. Racing isn't a inexpensive hobby. Some guys have engine sponsors, some guys pay big bucks to have a motor built, some build their own. The solution is to even out the power plant and let it stay a drivers class.
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November 21, 2011 at
10:40:22 PM
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Reply to:
Posted By: MODRACER2012 on November 21 2011 at 08:32:35 PM
That's the way it used to be when I started racing, but I hate to say those days are gone. The crate rule would make it easier to tech the cars and would level the playing field. I usually spend less than three thousand dollars per engine as well, but more guys spend $10,000 per motor. Racing isn't a inexpensive hobby. Some guys have engine sponsors, some guys pay big bucks to have a motor built, some build their own. The solution is to even out the power plant and let it stay a drivers class.
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Which begs the question, is Oklahoma needing to go to a crate series/rules for mods, sport mods and pro/street and racersavers for 305's in sprint cars?
David Smith Jr.
www.oklahomatidbits.com
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