RS inlets

[Danith]

When people refer to RS stamped inlets, does this apply only to the lower inlet? IE: Are all upper inlets/plenums/whatever you want to call them, the same?
And it's just a case of the lower inlet being bored out larger so you can match the uppers to, well, 'match'?

 

[Danith]

What determines whether a car will have the 'RS' inlets aswell? A specific model/year?

 

[Will.]

The lower inlet is RS stamped.

Usually found on late 172s and most 182s.

 

[Danith]

Ah cheers mate. Fancy doing a DIY spray job on the upper one so as long as it's 172 ph2 (and not 182 or ph1) it makes no difference what I get?

 

[Will.]

Yh. The upper is normal and you need to get one that's the same as your car.

 

[Danith]

Sorted. Thanks bud.