# 300zx swap issues.....bah **URL:** \ **Category:** SON240sx Automotive\ **Created:** [February 12, 2004, 10:06pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563 "2004-02-12T22:06:44Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![mymonkey666](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@mymonkey666](https://forums.speedlife.net/u/mymonkey666)\ **Post date:** [February 12, 2004, 10:06pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/1 "2004-02-12T22:06:44Z")
ordered a set of 30mm aluminum calipers with brembo cross/slot. Went to bolt them on and the tighter the bolts got the least the rotor would turn. Removed the shim, but still stuck. Anybody have any idea as to why? ---
**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\ **Post date:** [February 12, 2004, 10:30pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/2 "2004-02-12T22:30:48Z")
if you mean that the pads dont give enough clearance for the rotor, i had teh same problem… turns out i had teh 26mm calipers all along… if that isnt your prob then please disregard. i just suspect that some places dont really know or distinguish between 26mm and 30mm because both will fit the Z. ---
**Author:** ![oshiet](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@oshiet](https://forums.speedlife.net/u/oshiet)\ **Post date:** [February 13, 2004, 12:25am UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/3 "2004-02-13T00:25:30Z")
Bing, the so-called 30mm A calipars I got from you also turned out to be 26mm. Luckily, I measured the calipars before installing them. Otherwise, there would have been a bit of swearing involved. :x Refer to this page. [http://www.princeton.edu/~asad/zbrakes/](http://www.princeton.edu/~asad/zbrakes/) You’d probably fix your problem with some '90 Z32 NA 280x26 rotors. ---
**Author:** ![oshiet](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@oshiet](https://forums.speedlife.net/u/oshiet)\ **Post date:** [February 13, 2004, 1:10pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/4 "2004-02-13T13:10:59Z")
26mm calipars have just over 30mm groves. 30mm calipars should have about 35mm groves. ---
**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\ **Post date:** [February 13, 2004, 7:53pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/5 "2004-02-13T19:53:38Z")
^^^ i was worried about that… it seems both pairs that i got were 26mm instead of 30mm… it should work in your favour, they are the more desireable of the two… ---
**Author:** ![oshiet](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@oshiet](https://forums.speedlife.net/u/oshiet)\ **Post date:** [February 14, 2004, 12:53am UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/6 "2004-02-14T00:53:55Z")
I hate you bing! j/k :lol: At least I’ll have less clearance issues with my rims. Think I’ll get away with a 17x8+35 offset? ---
**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\ **Post date:** [February 14, 2004, 5:26pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/7 "2004-02-14T17:26:34Z")
not sure, you think i’ll get away with 16 x 8 +32??? i guess we’ll have to wait and see… ---
**Author:** ![mymonkey666](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@mymonkey666](https://forums.speedlife.net/u/mymonkey666)\ **Post date:** [February 16, 2004, 11:41am UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/8 "2004-02-16T11:41:45Z")
It all works…they are 30mm, the bolts are stock 240sx, but we had to buy washer shims for in between the spindle and caliper. Thanks guys ---
**Author:** ![mymonkey666](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@mymonkey666](https://forums.speedlife.net/u/mymonkey666)\ **Post date:** [February 16, 2004, 8:31pm UTC](https://forums.speedlife.net/t/300zx-swap-issues-bah/80563/9 "2004-02-16T20:31:41Z")
The shims are of very minimal size…0.010", but for some reason it made the difference.