SRA Information Thread

SRA S12s FTW!!! =)

Keep this posted man!  Extremely good resource.

what? since when do AE86 4links bolt into the S12?
this is new news to me.

This looks to be the making of a good thread...  Am very interested to see what comes of this :)

I_heart_VVL on 12:03:36 PM / 23-Jul-11
what? since when do AE86 4links bolt into the S12?
this is new news to me.

I_heart_VVL on 12:03:36 PM / 23-Jul-11
what? since when do AE86 4links bolt into the S12?
this is new news to me.

well that makes sense :o
ive emailed T3 before on 4links specifically for the S12, and they told me i would have to supply the dimensions and itd still be the same price as the 86 ones. They even said itd be the same to get them made to BOLT in a Celica/Supra rear, which i want.

but for almost $400? fuck that, im just gonna make my own :P

^
Word.

Thanks for starting this post Athens! I've actually been wondering about brake upgrades for the SRA. Seems as though SRA info is hard to come by. And last I read somewhere, I think the idea of the rear disc conversion wasn't really worth it cost-to-performance-wise. Will keep up with this thread for sure.

SRA's UNITE!!! =P

In two weeks i'll probably order the Porterfield rear r4-s shoes and I'll see if they fit, if so then the disc conversion isn't nearly as necessary as it was thought to be, especially for drifting. I bet racing brake shoes grab pretty hard when you rip that old e-brake. Still not as good as a hydro, but not bad.

Staying tuned for sure... I'm due for new rear brake goodies too... interesting thing on their info page is: **** We can make pads for any vehicle or caliper *** o_0

dont listen to the bs that s110 axles are weaker then s12. because apparantly they withstand my 1jz and my sr that had a comp stage 4 clutch

^^^while drifting maybe, but with the 280 ft/lbs the 1jz is putting down, I would be a little more cautious to go and try it on the drag strip with 24.5 racing slicks and glue on the strip... normally, if your doing anything else than drag racing, you can get away with pretty small axles, the diff crownwheel/pinion is normally what blows first on a welded diff... on an open diff, it's the spidergears

I don't know the difference in diameter between the h165 and the h190, but they might be very close... hell, the toyota 6.38 and 6.7 (except the kouki ae86 and the celica gt4) use the same axles...same diameter and splines, they slide right on both differential... same with the h145 and h150 from the datsun 1200 and b210

^ most deffinetly, i run a stock clutch on the 1jz to be careful about it. any form of drag racing i wouldnt do with a heavy clutch, id just get a IRS s12 honestly, or swap rear ends.

the corolla 4link and s12 4link is apparantly different the guy i emailed had all the specs done already which is as of 2011.. i measured a corolla once and there were only a  inch or so off.

my question is, do i ditch the swaybar? will i be needing that still?
idk it should take a few days for them to get here

tommy on 09:02:43 AM / 25-Jul-11

I don't know the difference in diameter between the h165 and the h190, but they might be very close... hell, the toyota 6.38 and 6.7 (except the kouki ae86 and the celica gt4) use the same axles...same diameter and splines, they slide right on both differential... same with the h145 and h150 from the datsun 1200 and b210

datzenmike on 06:37:09 PM / 14-Jul-10
They look the same because they are the same, well I should say that both are H-190s. The '81 and '82 S110 switched from H-165B to H-190 for those two years when the Z22 motor was offered. As stated the H165 would never swap into the H-190 housing.

I'll update the thread with the info about the t3 4-links. And just run with no sway bar and compare it to with one and see which one works better for you while you're drifting.

autoxers pull rear sway bars...allowing the rear end to move makes sras more grippy...i say keep the sway bar on.

sam31183 on 02:36:26 AM / 06-Aug-11
autoxers pull rear sway bars...allowing the rear end to move makes sras more grippy...i say keep the sway bar on.

the softer you go in the rear, the more understeer you create.... I think you need the opposite ;)....

when nascar came to montreal 2 years ago (It's the same road track that the F1 are racing on), they had the worst rain ever in a nascar race without stopping.  Pit crew started unhooking the rear swaybar so the car wouldn't oversteer too much in the turns...

I thought that only the 83 s110 had the h190... ho well

And man you are not scared of anything... I rebuild my trannies and diff inside a clean room in my basement, I put a clean blanket on the work bench and I cover it under an other clean one so that nothing gets on the gear, dust and all.... you do it on the garage floor among the sand, rocks and dead oak leaves... lol you really are "hard core man" :P

^i think not actually, you only get understeer from you go tooooo soft. which is why most aftermarket coilovers use a softer rear spring. kinda like the same as less tire pressure increases traction i guess. and quite contrary to the old belief, drift cars NEED rear traction too. they actually be set up like grip cars in order to be real competitive. more traction = faster accel. while on throttle/faster decel. while off throttle. = better/easier handling = a MUCH more predictable car.

Athens
If you convert to S110 rear discs you can use s13 calipers and rotors, but you need to use the left caliper on the right side and vice versa. Also, when converting to s110 your e-brake won't work very well, if at all.
Here are some good pads to upgrade with in the rear.

I_heart_VVL on 09:13:31 PM / 06-Aug-11^i think not actually, you only get understeer from you go tooooo soft. which is why most aftermarket coilovers use a softer rear spring. kinda like the same as less tire pressure increases traction i guess. and quite contrary to the old belief, drift cars NEED rear traction too. they actually be set up like grip cars in order to be real competitive. more traction = faster accel. while on throttle/faster decel. while off throttle. = better/easier handling = a MUCH more predictable car.

so since we can in fact use S13 rear calipers, i would only assume we can also use S14/S15/J30/Q45 rears as they're also a bolt-in upgrade for S13s? just flip them?
this seems too good to be true IMO -.-

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Post Merge: [time]02:15:35 AM / 07-Aug-11 [/time]

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@David B

i think pulling the rear sway off would help a great deal with rear traction, but thats just me.

more news. they havent sold a set in years and they have to get the right bushing size, he mentioned sending me some options. and explained sept. first when the website is going up all the s12 parts should be on there. i talked about it to him about owners not being sure of knowing

@Athens - did you ever get those Porterfield shoes in and installed? if so, how are they?

Waiting on a price for new rotors and drums, if I have enough I'm going to get them with it, if not then I'll have them in 2 weeks. Would have had them earlier but needed to buy an engine lift to get my ka I bought from my friend out of his car before he took it to the scrappers.

Athens on 05:03:25 AM / 23-Jul-11Also, when converting to s110 your e-brake won't work very well, if at all.

I just bought an s12. Until reading this I was unaware that SRA s12 existed (Yes I am new to these). I am in canada and my car is an 85. Therefore it *may* be an SRA or at least this is what I have been able to find. I don't have the car at my place just yet. My question is if I do have an SRA what are my options for lowering the car? I would preffer to have a set of adjustable coil overs. Do I have any options or am I shit out of luck?

^  You probably don't have an SRA car,  only 1984 non-turbo cars came with the H190 solid axle.  And if you can fab,  you can put coilovers on them I'm certain.  A guy named Jay on here knows how to do it,  as well as a few others,  I'm gonna ask him/them about it in detail when I have all the parts I need.

My car is non-turbo, Ive read that *some* 85 canadian cars had them, Which lads me to believe that I may have a SRA.

Just take a look at it. Then you'll know.

if i choose to use the ford 9" axles the ford DIFF inst to big to use with the s12 housing? or i have to swap the entire rear end for the fords one? and sorry if i dont get it im new here

Whole ford end. There's no way it will fit in the H190 housing. Not to mention axle length and other factors.

The rule of thumb is that you increase the roll stiffness of the non-driven wheels, and decrease the roll stiffness of the driven wheels. My CRX had a 30mm bar in the back, giving me that awesome "dog-pissing" action in hard corners; conversely, Mustangs run at the top class of Solo2 often run with no rear sway bar at all.

Best suggestion I can give is to make or get some adjustable sway bar end-links and experiment. I'm going to be doing that at some point to adjust between hard and loose surface traction. Increasing the length of the end-links will increase the effective stiffness of the bar, while decreasing it will "soften" it. If you still need more stiffness, go to a larger bar and start the process again.

Oh, and playing with tire pressures front to rear will also change the bar's effective stiffness.

thnk jay, so i can make someone make the ford housing ligther with custom axles but with the same strengh, but can i use the 4-links mount from my car like cuttin the mounts on the H190 housing and weld them on the ford 9" so i can use the 4-link set up or i have to use those leaf type mounts from the ford?

does any of u guys have a how to o what i really be nneding for that swap?

Yes. You absolutely could use the stock 4 link setup by welding the H190 tabs on to the 9" axle itself.

No, there is no how to. You're pretty much on your own. But it's fairly simple.

How will it attach to car? (4 link, already decided, modified on axle)
How wide will it be? (Up to you)
What braking system will it use? (up to you)
Parking brake modification to use new brake setup (Pretty easily done)
What kind of spring/shock setup? (I'd stick to the stock on axle setup. Make it work with relative ease)
Custom driveshaft.

Done.

Jay on 04:03:46 PM / 13-Jul-12Yes. You absolutely could use the stock 4 link setup by welding the H190 tabs on to the 9" axle itself.

So are there any LSD options for the s110 rear end? I'm pretty sure I have a H165 since I have a 1980 s110. Just wondering what my options for LSD would be other than swapping the entire rear end. Also, if I swap out my rear calipers to s13 calipers,  do I still utilize the stock parking brake linkage,  or the s13 linkage? Thank you for the help!