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A thought about transmissions.

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  • Member since
    January, 2017
A thought about transmissions.
Posted by 195X on Tuesday, August 01, 2017 7:26 PM

This pertains to the style of transmission in a rear wheel drive car.

Do you remove your seams, or do you let it be? It's been some time since I got to spend time belly up under a car, but don't most transmissions have a seam in roughly the same position as most kit tranny's? In which case, why clean the seam?

My favorite color is clear. I am also ambidexterous, I can screw up equally well with either hand. I am 53 years old and been building for most of that time. :)

On the bench... somewhere. Pink Panther show car, 1978 Dodge Magnum Charger Daytona Midnight edition SE 300. Mongrel T.

  • Member since
    September, 2016
Posted by TnT on Tuesday, August 01, 2017 10:17 PM

Except where the pan is. And some are ground down a bit.

  • Member since
    August, 2005
  • From: Nashua, New Hampshire
Posted by mrmike on Wednesday, August 02, 2017 6:38 AM

It is best to clean up the seam as best as you can.  I have even puttied the seam on the transmission several times over the yeaars.

"That's Spenser with an 'S' like the poet." Robert Urich Spenser For Hire 1985 

On my bench-1965 Chevrolet Fleetside Pickup; The Striped Tomato

Classic Plastic Model Club

  • Member since
    December, 2003
  • From: Nova Scotia
Posted by Bainford on Wednesday, August 02, 2017 7:54 AM

Yup, I clean up the transmission until the seam is undetectable. In cases where it's not worth bothering with such clean up, I simply build curbside and leave the engine/trans out altogether, glue the hood shut and paint the chassis flat black (something I do more often these days).

With the exception of a replica of a specific car with an auto box, all my builds have a manual trans. Bell housings and and most tailshaft housings are one piece (no seam), though some tailshaft housings have a 'seam like' flange on their bottom surface. Some, mostly older gearbox cases have a split case, and therefore a seam. However I would say most 'muscle era' and newer gearboxes have a one piece case with a removable top cover (Fords) or side cover (most others).

This all applies to primarily American cars of the 50s - 80s with rear wheel drive. Many foriegn cars have a split case, and therefore a seam, as do many pre 50s cars. If these details matter, it is best to google an image of the trans in question.

Power matters in the straights.
Lightness matters everywhere. - Colin Chapman



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