# Strait Cut Gears SR20DET -

**URL:** <https://forums.speedlife.net/t/strait-cut-gears-sr20det/129522>\
**Category:** SON240sx Automotive\
**Created:** [November 11, 2009, 11:07pm UTC](https://forums.speedlife.net/t/strait-cut-gears-sr20det/129522 "2009-11-11T23:07:16Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![sonfc](https://avatars.discourse-cdn.com/v4/letter/s/a88e57/32.png) [@sonfc](https://forums.speedlife.net/u/sonfc)\
**Post date:** [November 17, 2009, 12:58am UTC](https://forums.speedlife.net/t/strait-cut-gears-sr20det/129522/31 "2009-11-17T00:58:34Z")

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> [@FS: 93 ford ranger](https://forums.speedlife.net/t/fs-93-ford-ranger/24781/6):
>
> Straight cut gears are stronger than helical ones, but their engagement is very rough in comparison. The helical gears are at an angle, so that they engage smoother, but this makes them more prone to breakage, etc. I believe that 99% of all street cars have helical gears, not sure if it does, but I think the Porsche GT3 might have straight cut.

the type of gear has nothing to do with engagement, Helical gears are in street cars because they are quieter no other reason, that wierd whirrrrr noise going in reverse is because the reverse gear is always a straight cut gear

Helical gears = Quieter= More load on the bearings in the tranny on high horsepower apps

Straight cut gears = louder = considerably less load on bearings in tranny

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