Snowball Posted July 31, 2008 Report Share Posted July 31, 2008 The A.C.E Motors will be allowed at the final two Blizzard races, and if all goes as expected, they will be allowed for the 41st annual Snowball Derby! The motor must run a 750 carb. There have been many MidWest drivers that have wanted to run at Five Flags, but the A.C.E motor was not in the rules. Hopefully this will bring some down to the historic race track! The last two Blizzards will be on August 15th and September 26th. Link to comment Share on other sites More sharing options...
Vir Posted July 31, 2008 Report Share Posted July 31, 2008 What is the difference between the legal motors now and the A.C.E. motors? Come on Frosty, don't keep us out in the cold. Link to comment Share on other sites More sharing options...
Montgomery Motorhead Posted July 31, 2008 Report Share Posted July 31, 2008 I have never heard of an A.C.E. motor. Someone that knows please explain. Link to comment Share on other sites More sharing options...
Pacecar Posted July 31, 2008 Report Share Posted July 31, 2008 An ACE engine is a recipe of approved spec parts for a SLM engine. Based upon a certain Brodix non-modified aluminum cylinder head. Compression is 10.5 to one. This "more-affordable" SLM type engine is run in the ASA Midwest Series, optional in the CRA series, etc. C. A.C.E. Head Engine Must be able sell Heads, complete for $2300.00 (hardware, valves, valves springs, retainers, keepers and guide plates.) Heads must be stock out of box. Valves 11/32 Valve Stem or 5/16 Valve Stem may be used Approved valve part numbers GM-Ford Intake Exhaust BRODIX BR81019 BR81621 Engine Tech BR810198 BR81621 FERREA F1121P F1476P MANLEY 11818 11595 REV CL-1643 CL-1604 CL-8003 CL-1171 Mopar BRODIX BR60029 BR60037 All valve spring sizes must be 1.55 MAX No shaft rocker arms allowed except on Mopar engines Steel or Titanium Valve Spring Retainers are permissible Maximum 4 stage oil pump May have one extra water line per head 1. ACE Engine MANIFOLDS Any production type intake manifold allowed - provided it is readily available to all competitors from local race part suppliers. (Maximum cost $375.00) Maximum height of manifold is 7.25" (including any carb spacer and gaskets) the manifold height will be measured from the base of carb to top of cylinder block. Only one flat gasket with a maximum of .120 may be used between intake manifold and cylinder head - no spacer or wedge type gaskets allowed. No additional material may be added to manifold. No grinding or polishing of any part of the manifold - except you may match port the runners a maximum of 1". 2. ACE Engine PISTONS Flat top pistons only - no part of piston may protrude above top of cylinder. (Maximum) compression ratio 10.5 to 1 (10.510 is illegal). Maximum Engine displacement for GM and Ford is 358 C.I. inches, Dodge will be 360 C.I. and Minimum 350 C.I. for GM, 346 C.I. for Ford. 3. ACE Engine CAMSHAFT The max lift on any roller cam is .625. Duration rule is 270 at 50 thousandths. No mushroom type lifters. Inlayed cams are prohibited. The maximum rocker ratio is 1.6 to 1. Rev kits of any type are prohibited. Only steel push rods (Titanium, aluminum or graphite are prohibited). No roller bearing camshaft journals. Magnetic steel lifters no ceramic. 4. ACE Engine CONNECTING RODS Only ASA approved steel rods allowed. No titanium, aluminum, graphite or stainless steel. Rods using 3/8" bolts are allowed. 5. ACE Engine BLOCKS Must be standard factory production cast iron. (Only 010 or bowtie approved). No aluminum blocks permitted. No altering of Engine block permitted..* Absolutely NO Grinding or lighting of blocks . 6. ACE Engine CRANKSHAFT Standard steel type only, Minimum allowed weight of 43 Lbs. Stock angle crankshaft allowed. Light weight, knife-edge, undercut counter weight crankshaft are prohibited. No Honda journal crankshafts. Stroke 3.400 Min to 3.500 Maximum. Minimum 1.980-rod journals or any under sized journals under factory dimensions. 7. ACE INSPECTION A 1.5” plug must be installed in the oil pan for inspection purposes. This hole must be directly under or side of the rod journal. If a windage tray is used, a hole must be provided in line with the hole in the oil pan. Cylinder head removal after any race may be required for inspection purposes. Link to comment Share on other sites More sharing options...
Snowball Posted August 1, 2008 Author Report Share Posted August 1, 2008 Pacecar, I'm glad you filled them in because I'm no tech guy! Link to comment Share on other sites More sharing options...
racer61 Posted August 1, 2008 Report Share Posted August 1, 2008 Do these "lower cost" engines come with some kind of weight break if competing against larger SLM engines? Link to comment Share on other sites More sharing options...
Pacecar Posted August 1, 2008 Report Share Posted August 1, 2008 In some places, the ACE engines get a 50 lb weight break. In others, the ACE engine gets to run a bigger carburetor. Link to comment Share on other sites More sharing options...
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