S13 subframe brackets, necessary?

[tuzzio]

Just did solid subframe risers in my s13 yesterday. the fronts have a thin bracket that bolts to the chassis under the nut to hold the subframe on

Is this janky shit necessary? Mines bent to fuck anyways, and I can't imagine this doesnt anything to stiffen the chassis considering its thin as hell.

[zombiewolf513]

theyre reenforcement for the subframe studs, so theyre constrained by both ends and harder to shear off.

They also keep the subframe from shifting around

They wouldn't be there if they didn't actually do something

[ronny.jpn]

I haven't ran mine in years and its still good. I don't know.

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[ditchs14]

With solid risers I don't think he has to worry about is subframe moving around lol

[Drift_86]

Yeah with solid bushing you wouldn't need it but I would leave them on just in case

[ComicArtist]

I always looked at it as if, say the subframe stud breaks, at least that thin little piece of metal is there to keep that corner of the subframe from dragging until you can at least pull over to the side of the road or something

[soundboy]

What he said. /\

[ixfxi]

Those brackets are only needed if you run an OEM rubber subframe bushings. If you ever examine the OEM bushings, they are not solid. They are designed to be pressed in with a precise orientation that effects which way the subframe can move. I believe the brackets aid in preventing the subframe in moving forward/backwards.

Here is a photo of the OEM type rubber bushings:
http://i284.photobucket.com/albums/ll23/300zxtt12345/NismoSuspensionBushings/IMG_1274.jpg (http://s284.photobucket.com/user/300zxtt12345/media/NismoSuspensionBushings/IMG_1274.jpg.html)

[Standard]

I have MAX subframe risers in my car and i'm not using those brackets, I actually have a set of RPsport aluminum brackets that i haven't installed because they don't line up right with the subframe raised. I honestly don't think they're really necessary, I've been running without them.

[Sileighty_85]

I always looked at it as if, say the subframe stud breaks, at least that thin little piece of metal is there to keep that corner of the subframe from dragging until you can at least pull over to the side of the road or something

......What? are you saying that if a stud breaks that the corner of the subframe is gonna droop and drag on the ground?

[ixfxi]

......What? are you saying that if a stud breaks that the corner of the subframe is gonna droop and drag on the ground?

yeah man, didnt you know that a piece of 12 gauge steel can support the subframe and whatever load is on the car???

come on man, this is zilvia engineering 101. zip ties, BRO.

[Drift_86]

yeah man, didnt you know that a piece of 12 gauge steel can support the subframe and whatever load is on the car???

come on man, this is zilvia engineering 101. zip ties, BRO.

I've never hear of this happening could some one post pictures of the studs broken off? Sound like is possible but couldn't imagine it.

[racepar1]

Those brackets brace the studs themselves and limit flexing. With the stock or stock style bushings they actually do make a difference. With solid bushings they are less necessary, but bracing the stud to limit flex is always a good idea. If running without those brackets would have any real consequence I would think the stud may separate from the chasis eventually due to the additional flex. The stud itself will likely not break as it's super beefy, but remember, that super beefy stud is probably held to the chasis with like 4 spot welds.

For those using risers so the brackets don't line up you could use some washers or spacers and mount it to the bottom side of the bracket rather than the top. You would need some RPSport style ones though as the stock ones use studs which wouldn't be long enough for the spacers/washers. You COULD just go to home depot and buy some aluminum flat stock and make them yourself. It's really not that hard. All you need is a hacksaw, a drill, a tape measure, and a fully functioning brain. I know that last item may not be available to everyone though...

[red92ka]

I always looked at it as if, say the subframe stud breaks, at least that thin little piece of metal is there to keep that corner of the subframe from dragging until you can at least pull over to the side of the road or something

Yeah.... no. Probably ought to think some more about this if you really think that's gonna happen.

[Sileighty_85]

yeah man, didnt you know that a piece of 12 gauge steel can support the subframe and whatever load is on the car???

come on man, this is zilvia engineering 101. zip ties, BRO.

http://i73.photobucket.com/albums/i235/Neil_85/Gifs/Explode.jpg

[ixfxi]

Those brackets brace the studs themselves and limit flexing. With the stock or stock style bushings they actually do make a difference. With solid bushings they are less necessary, but bracing the stud to limit flex is always a good idea. If running without those brackets would have any real consequence I would think the stud may separate from the chasis eventually due to the additional flex. The stud itself will likely not break as it's super beefy, but remember, that super beefy stud is probably held to the chasis with like 4 spot welds.

the subframe studs are not spot welded, they are fully welded and reinforced.

[Matej]

If your bracket is too bent to reuse you can use two hose clamps and a twig.

[racepar1]

the subframe studs are not spot welded, they are fully welded and reinforced.

Actually, I was wrong. They're not even welded at all, they're splined just like a wheel stud, hence the bracing...

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTBZ2sWJ5nMGvi8n96VOCST9kOx2wfRA uaYMrXNjy5qv7pE4IQ

[ixfxi]

Actually, I was wrong. They're not even welded at all, they're splined just like a wheel stud, hence the bracing...

https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTBZ2sWJ5nMGvi8n96VOCST9kOx2wfRA uaYMrXNjy5qv7pE4IQ

haha KNURLED, aron. KNURLED.

but look how thick the section of metal it goes onto is. it certainly isnt flimsy. besides, being knurled should allow for easy replacement.

i wonder if those are listed in the FAST and available for sale. interesting.

[racepar1]

haha KNURLED, aron. KNURLED.

but look how thick the section of metal it goes onto is. it certainly isnt flimsy. besides, being knurled should allow for easy replacement.

i wonder if those are listed in the FAST and available for sale. interesting.

They would be easy to replace if you didn't have to cut a hole in either the floor or frame rail to replace them. We live in CA though. No rust, no worries about that for us! Nissan's are pretty beefy in the suspension department, basically bulletproof. If that was a BMW that stud would be tack welded to a 16ga piece of sheetmetal. It's no coincidence that Dave owns my old BMW now, learned my lesson! HAHA!

With the stock bushings it wouldn't be a stretch of the imagination for the stud to flex around enough to EVENTUALLY loosen up that knurl. With solid bushings that's not very likely to happen.

[ixfxi]

They're pressed in, removal is just like a wheel stud, only larger.

I highly doubt that the subframe studs would move at all. You gotta remember that these are sandwhiched and fully fastened down x 4. Sounds pretty secure to me!

[tuzzio]

All you need is a hacksaw, a drill, a tape measure, and a fully functioning brain. I know that last item may not be available to everyone though...

You're talking to a bunch of 240 owners, dafuq iz a brain?

[racepar1]

They're pressed in, removal is just like a wheel stud, only larger.

I highly doubt that the subframe studs would move at all. You gotta remember that these are sandwhiched and fully fastened down x 4. Sounds pretty secure to me!

Yeah, but they're pressed in on the INSIDE of the "frame rail" with no access hole on top of them...

[zerodameaon]

People break off the subframe studs or the mounting point to the frame rail from time to time. I personally have seen it twice on S13s, though in both cases they had the little bracket and it did not do jack.

[codyace]

People break off the subframe studs or the mounting point to the frame rail from time to time. I personally have seen it twice on S13s, though in both cases they had the little bracket and it did not do jack.

I backed my tin can into a wall at 100+ and didn't have a subframe bolt snap thankfully.

[ixfxi]

Yeah, but they're pressed in on the INSIDE of the "frame rail" with no access hole on top of them...

2 words: hole saw

I backed my tin can into a wall at 100+ and didn't have a subframe bolt snap thankfully.

boiled fliud, cody! BOILED FLUID!

[racepar1]

2 words: hole saw

I would LOVE to see how many holes the average 240 kid would cut in the floor before they got it right. Then I wanna see how they patch them up!

[codyace]

2 words: hole saw



boiled fliud, cody! BOILED FLUID!
More like no fluid...yikes

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[zerodameaon]

I backed my tin can into a wall at 100+ and didn't have a subframe bolt snap thankfully.

Right, because that would have been a pain to replace. :coolugh:

I would LOVE to see how many holes the average 240 kid would cut in the floor before they got it right. Then I wanna see how they patch them up!

They would not bother to patch it up. They would just dimple the holes and call it a feature.

[zombiewolf513]

They would not bother to patch it up. They would just dimple the holes and call it a feature.

...I think youre on to something

[racepar1]

They would not bother to patch it up. They would just dimple the holes and call it a feature.

Yeah right, like 240 kids have access to a dimple die. Or would know how to use it. I vote duct tape, or maybe they would drill a shitload of little holes and zip-tie the pieces they cut out back in...

[tuzzio]

my vote is on zip ties.

[zerodameaon]

Yeah right, like 240 kids have access to a dimple die. Or would know how to use it. I vote duct tape, or maybe they would drill a shitload of little holes and zip-tie the pieces they cut out back in...

I never said they would use a dimple die. I fully expect them to try it with a rock or their forehead.