I'm really tired tonight so instead of trying to work on the car and messing up everything I do, I decided its time for an update with pictures. Finnally decide were to locate the engine. Getting it shimed just right on the build table was impossible but luckily my engine has bolt on axles. A couple pieces of plywood with the bolt pattern located at the right height and a 2x4 screwed between them let me locate the axles were I wanted them.
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By screwing the 2x4 to the table I could keep the axle location from moving while I rotated the engine around the axle centerline by shimming under the oil pan. With the engine located I could figure out the size of the engine bay and the rear suspension. I played with the height of the rear-most bulkhead till I could run a diagonal across every side of the engine bay including one from the driver rear corner to the were the rollbars cross.
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Should help to keep the frame stiff. The Rollbar braces to the rear are going to have to be removable so I can get the engine out. The bracket on the bottom of the bar is bolted to the frame in three planes.
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I haven't decide how to connect it to the rollbar. Any thoughts on if I should do it with a double lug or a telescoping joint? Does a doulble lug have to have a cap plate that raps around the rollbar to be SCCA approved? Maybe some pictures of how others have done it would be appriciated.