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Michel, Pg.90, "Race Car Chassis Design and Construction", by Forbes Aird, documents Porsche's experience with aluminum space frame cracking as I described it. Best regards, CJR

Terry, If I understand it, you used aluminum for the sway bar? If that is correct, be aware that aluminum has a much shorter fatigue life than steel. Classic documented example; Porsche built a tubular aluminum space frame for one of its racecars. During the first season the tubes began to...

Terry, Four (4) inches of clearance is kind of tight. I'd suggest an infra-red thermometer to shoot the outside temp when it's idling. Paint likes to bubble at high temps. Likewise, a thermocouple in the inside would help to measure peak temperatures before the FG starts to melt/burn...

Terry, Periodically, I check in on your progress. You've done an outstanding job! I notice your FG panel, over the engine/headers, is close. How will you get the excess heat out before melting/burning the FG ? Pipe wrap insulation will help some, but it's going to get real hot under that FG...

Ox & Jack, Thanks for the responses. I appreciate them! Ox: I've got a Manta manual, so let me know what info you need and I'll get it to you. Jack: I know the TH425 is heavy but strong. After my Manta ride, I had a long discussion with the owner about some problems he was having with his...

Ox, I've enjoyed your build thread using the Manta Mirage as a base. Many years ago I had an exciting ride in a Manta and seriously considered buying one. Recently, I tried to purchase a Manta. Gave up on that and now I'm in the planning process to build a M8B from scratch. Some questions...