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Vintage 140 Series Group on TB

Just curious why KG recommends an Allen headed bolt yet the factory used a typical 6-sided hex-bolt.
 
Volvo updated the flywheel bolts to a longer one with a larger head that holds more torque.

http://hiperformanceautoservice.com/images/SB%2021_2%20Flywheel%20bolts%20B20%20B30.pdf

KG probably offers the Allen bolts as a cheaper alternative to the expensive updated bolts from Volvo.

https://www.tascaparts.com/oem-parts/volvo-screw-944741

Most Allen bolts are harder than standard automotive fasteners so they're probably a safe alternative although I'd run a washer to spread the load over a larger area.
 
sksmith said:
I don't know why Tasca is so high, $1.50 each on VP's site????
Steve
Click to expand...


They probably found a different source for them.

The bolt Skandix is selling claims to be original Volvo and doesn't appear to have the lines in the head like the one VP is selling.

1035422.jpg
 
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