Rear S15 Crossmember vs. S13 Crossmember - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Behind Horizon · 05-04-2007, 03:24 AM

Hello guys,

it seems to be common to swap the original rear S13 subframe and install an S15 one in Japan.

Which are the benefits of the S15 crossmember over the S13 and why shops in Japan do this ?

My opinion is if you put the parts stated below on each subframe, both will perform nearly identical, or am i wrong ?

- Kazama Upper (Camber) and Toe Control Arms Kit
- Kazama Rear Traction Rods S13
- Good Sway Bars
- Aluminium Subframe Bushings
- Polyurethan bushings for knuckles

Looking forward for replys.

Greets

BH

PoorMans180SX · 05-04-2007, 01:38 PM

you might want to edit that so it says rear subframe, because that's what it's called, not a cross member.

CKAMC · 05-04-2007, 04:28 PM

Quote:

Originally Posted by chmercer

dousan had it on his old hatch like forever ago

using s13 arms

the reason people swap s15 frame is the placement of the pickup points gives a better toe curve

he also put on s14 foward links and s14 toe links

wider track(sticks out an extra 10mm's) and the way it sits(suspension geometry) and what chmercer said are what/why people do the swap...

internet 9th hand also says it allows you to lower the rear even more, especially with large wheels (18's and larger)

MadScientist · 05-04-2007, 05:00 PM

Sub-Frame swaps are actually fun... you will learn everything on the first time.

S13 is smaller - S14/15 are larger by about (10mm) - S15 has additional strucural supports.

Peace
Drew

articdragon192 · 05-05-2007, 03:37 AM

I wonder if I can fit an S15 subframe into my z32. Hmmm...

sideview_180sx · 05-05-2007, 07:42 AM

I also think is because the S15 has more anti-squat. mounting points on the subframe are like 1-2inches lower on the LCA. Helps control fishtailing coming around corners.

krappy · 05-05-2007, 07:52 AM

Quote:

Originally Posted by sideview_180sx

I also think is because the S15 has more anti-squat. mounting points on the subframe are like 1-2inches lower on the LCA. Helps control fishtailing coming around corners.

1-2inches lower compared to s13s? or s14s?

CKAMC · 05-05-2007, 01:35 PM

^^s13

messagelngth

McRussellPants · 05-06-2007, 02:40 AM

It has less anti-squat.
It has a better toe curve than S14
Its 10mm wider
the arms are reinforced

If someone could get me Yanack stuff and people didn't charge rediculous amounts of money for S15 stuff just because its off an S15 I'd have one by now.

EDacIouSX · 05-06-2007, 03:11 AM

Quote:

Originally Posted by McRussellPants

It has less anti-squat.
It has a better toe curve than S14
Its 10mm wider
the arms are reinforced

If someone could get me Yanack stuff and people didn't charge rediculous amounts of money for S15 stuff just because its off an S15 I'd have one by now.

What is toe curve?

flytwa78 · 10-19-2007, 11:20 PM

So I guess if we have an S14, we can make better with an S15 subframe too.

Dousan_PG · 10-19-2007, 11:27 PM

yeah offset bushings are PRICEY!!

i had the subframe as said above
it was cool

05-04-2007, 03:24 AM	#1
Behind Horizon Zilvia Member Join Date: Dec 2006 Location: Germany / Black Forest Posts: 164 Trader Rating: (0) Feedback Score: 0 reviews	Rear S15 Crossmember vs. S13 Crossmember Hello guys, it seems to be common to swap the original rear S13 subframe and install an S15 one in Japan. Which are the benefits of the S15 crossmember over the S13 and why shops in Japan do this ? My opinion is if you put the parts stated below on each subframe, both will perform nearly identical, or am i wrong ? - Kazama Upper (Camber) and Toe Control Arms Kit - Kazama Rear Traction Rods S13 - Good Sway Bars - Aluminium Subframe Bushings - Polyurethan bushings for knuckles Looking forward for replys. Greets BH Last edited by Behind Horizon; 05-05-2007 at 07:30 AM..

05-04-2007, 01:38 PM	#2
PoorMans180SX Zilvia.net Advertiser Join Date: Nov 2005 Location: Michigan Age: 37 Posts: 5,616 Trader Rating: (16) Rides Gallery: PoorMans180SX Feedback Score: 16 reviews	you might want to edit that so it says rear subframe, because that's what it's called, not a cross member. __________________ Build: http://zilvia.net/f/showthread.php?t=643065 Friends don't let friends buy knock-offs.

05-04-2007, 05:00 PM	#4
MadScientist Zilvia.net Advertiser Join Date: Mar 2003 Location: NOLA Age: 48 Posts: 1,972 Trader Rating: (3) Feedback Score: 3 reviews	Sub-Frame swaps are actually fun... you will learn everything on the first time. S13 is smaller - S14/15 are larger by about (10mm) - S15 has additional strucural supports. Peace Drew __________________ Follow on IG - KoukiTheToolBox

05-05-2007, 03:37 AM	#5
articdragon192 Post Whore! Join Date: Jan 2005 Location: West covina Age: 39 Posts: 6,792 Trader Rating: (9) Feedback Score: 9 reviews	I wonder if I can fit an S15 subframe into my z32. Hmmm... __________________ Need help? Click here Still stumped? Try this Can't find what you're looking for? Here you go.

05-05-2007, 07:42 AM	#6
sideview_180sx Zilvia FREAK! Join Date: Apr 2005 Location: somewhere north of mexico Posts: 1,538 Trader Rating: (3) Feedback Score: 3 reviews	I also think is because the S15 has more anti-squat. mounting points on the subframe are like 1-2inches lower on the LCA. Helps control fishtailing coming around corners. __________________ feel the rythym. feel the ride. get on up. it's bobsled time. COOL RUNNINGS!!! formerly sideviewcivic Save a Horse. Drift This Cowboy. AirBag Club Member #0014

05-05-2007, 01:35 PM	#8
CKAMC Post Whore! Join Date: Mar 2004 Location: Desert Age: 38 Posts: 4,804 Trader Rating: (0) Feedback Score: 0 reviews	^^s13 messagelngth __________________

05-06-2007, 02:40 AM	#9
McRussellPants Nissanaholic! Join Date: Oct 2005 Location: Austin, Tx Posts: 2,168 Trader Rating: (0) Feedback Score: 0 reviews	It has less anti-squat. It has a better toe curve than S14 Its 10mm wider the arms are reinforced If someone could get me Yanack stuff and people didn't charge rediculous amounts of money for S15 stuff just because its off an S15 I'd have one by now.

10-19-2007, 11:20 PM	#11
flytwa78 Leaky Injector Join Date: Jan 2006 Location: Guam Posts: 115 Trader Rating: (0) Feedback Score: 0 reviews	So I guess if we have an S14, we can make better with an S15 subframe too.

10-19-2007, 11:27 PM	#12
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 46 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	yeah offset bushings are PRICEY!! i had the subframe as said above it was cool __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira