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Looking to get a pair of HKS cam shafts does anyone here have them for a series 1 rb25det. What would be the best option to take?

I have them installed in my RB25DET SI. Not exactly sure but think they are 264 duration with 9mm lift.

Excellent mid range.

Gave me a nice fat curve.

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Hi guys, i'm after a set for my rb 25det and am unsure also of which ones to get.

Can someone explain the difference of degrees on the cams?

Why do some people as an example use one 265 and one 264?

2face... why are you going with hks and not tomei? Tomei seem to be the choice around here.

should you do springs at the same time also? How good are the stock springs?

Edited by handyandy
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Hi guys, i'm after a set for my rb 25det and am unsure also of which ones to get.

Can someone explain the difference of degrees on the cams?

Why do some people as an example use one 265 and one 264?

2face... why are you going with hks and not tomei? Tomei seem to be the choice around here.

should you do springs at the same time also? How good are the stock springs?

On an s1 rb25 the largest hks drop in inlet cam that you can use while retaining the vct is a 256, where as the largest exhaust is a 264. same on s14/15 aswell.

Stock springs are fine with these cams provided boost doesn't get too high (20psi plus) and you maintain something close to the stock revlimit. Not saying that it isn't worth upgrading the springs, but it just isn't absolutely necessary.

The largest off the shelf tomei's have sligtly less lift and shorter duration than the hks units. Both hks and tomei cams are of high quality, i would have no problem using either.

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