1985 IMSA Ford Semi-Repro Questions

  • Context: Automotive 
  • Thread starter Thread starter average guy
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SUMMARY

The discussion centers on the engineering features and design elements of a Ford Semi-Repro vehicle, particularly in the context of IMSA racing. Key specifications include a V8 engine with an automatic transmission, a front mid-engine layout, and a Super Modified style straight axle. The construction method draws inspiration from 1960s Super Modified chassis and utilizes rectangular tubing for the frame, emphasizing structural integrity and performance. Participants share insights on body shapes and engineering techniques relevant to automotive design.

PREREQUISITES
  • Understanding of V8 engine configurations and automatic transmissions
  • Familiarity with Super Modified chassis design principles
  • Knowledge of automotive frame construction using rectangular tubing
  • Awareness of IMSA racing specifications and vehicle aerodynamics
NEXT STEPS
  • Research "IMSA racing vehicle design standards" for compliance and performance insights
  • Explore "Super Modified chassis engineering" for advanced construction techniques
  • Learn about "rectangular tubing applications in automotive frames" for structural advantages
  • Investigate "aerodynamic body shapes in racing cars" to enhance vehicle performance
USEFUL FOR

Automotive engineers, race car builders, and enthusiasts interested in high-performance vehicle design and engineering principles related to IMSA racing.

average guy
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mechanical engineers
what engineering features are on
car like this?
it looks like the mark for me.
mid-engine has it's plusses, but
i think i'll stick with engine in front of me.

Have A Nice Day!
 
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spinnor
can you tell the difference between a Porsche
and a Ford?

Have A Nice Day!
 

Attachments

  • Ford Motorsports Mustang GTP.jpg
    Ford Motorsports Mustang GTP.jpg
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auto engineers
parameters:
1 V8 & automatic
2 Front Mid Engine like Wikipedia pic but engine set back more
3 regular rear axle, like ford 9"
4 front end Super Modified style straight axle, i mean STRAIGHT no drop.
5 4 link locators front & back, once again ala Super Modified
6 delete 'roof', just roll bar w/single brace
7 'hang on' fiberglass body.
Coyote Supercar building method.
flat vertical and horizontal surfaces with radiused corners.
question:what's that body shape called generally?
the bodies like this IMSA car and Porsche 954 le mans cars, Paul Newman car.
boxes with a front and rear cap isn't a good name.:smile:


Have A Nice Day!
 

Attachments

  • Front Mid Engine.png
    Front Mid Engine.png
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Last edited:
These were successful whether turbo 4 or 7 liter V-8.

pruett88_1.jpg


3430237431_c0a61bb24f_b.jpg


2331416995_101cae3d9d_o.jpg
 
howler monkey
let me know if you enjoy the following
'Automotive Engineering' aspects of this that follow.
i'm using the 'mix and match' system of building.
first time i saw 60's Super Modified chassis i thought
i'm going to use those ideas someday.
frame like Lough & Lough.
if frame is 24" tall.
that gives you 24" to bounce the front straight axle
up & down in.
it swings on a four link.
frame is rectangular 24" tall & @40" wide.
the beauty of Super Modified frame is
longitudinals are straight as an arrow whole length.
the IMSA car thing comes in with the look of
THAT '85 EXAMPLE.

Have A Nice Day!
 
auto engineers
i'm going to use same method as
these sprint car frames.
main part of frame cross section is rectangular.
whole frame is built on the square.
i'm going to use rectangular tubing.

Have A Nice Day!
 

Attachments

  • Sprint Car Chassis's 3.JPG
    Sprint Car Chassis's 3.JPG
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Do you have the chassis built?
 
chris
1/4 scale chassis pic's should be
available in 3-4 weeks.

Have A Nice Day!
 

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