11-21-2007, 08:43 PM
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Senior Club Cobra Member
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Join Date: Jul 2006
Location: McKinney,
TX
Cobra Make, Engine: ERA GT #2077, 331 SBF, Webers, Gurney Eagle heads
Posts: 1,275
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Not Ranked
Similar situation on #745
I just went out and looked, I have some similar strike marks on the top of passenger side pipes. Never really looked till now. I measured the location of the cutouts on both sides .. the passenger side is 4-1/2" from the side louver cutout, exactly per the manual, page 72. The driver side is 5-1/8", or 3/8" too low, per the manual it should be 4 3/4".
Conclusion, one cutout is too low, but the one where the strikes are is per spec. Assuming the louvers are in the right place ... Possibly, a variation was introduced in the post 730 redesign that has not been fully characterized yet.
The ERA recommended bolt is through the motor mount on the driver side. I wonder if the passenger side motor mount needs a bolt also to keep it from rising up?
Bob, what do you think is going on? I am using the recommended 31-2222 and 31-2223 mounts.
I suppose all this could be cured by a mandrel bend of all eight primaries of about 1/2" at the outboard end. Of course the ceramic would need to be redone.
Sam
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