Subframe Modifications For Your Track Car

[nsmo30tt]

I will have to look into this sometime.. cbf taking my subframe out yet though.. someday and hopefully before then someone else has done it... What about cutting them because theyre pretty much the exact opposite of yours instead of going in the go out. like a little bump

..well I think the bump faced upwards I can't remember actually

Edited June 7, 2010 by 30edR32

[Simon-S14]

the idea is to have no gap between the subframe and the body. so no bush protruding from the top

[nsmo30tt]

mm I think the stock nissan ones protrude less than noltecs.. that wasn't a smart move on my part

[nsmo30tt]

These looks promising.. Not that you can see the otherside of them but I'm assuming theyre flat, although they still need the standard collars so I don't know if they will make jack all difference ah sorry scratch that its late and im going blind... it says "standard lower sub-frame collars/brackets" so you can leave the top ones off I'm guessing

http://www.racemod.com.au/images/products/...rame_mounts.jpg

Well they have the same ones for R32

Edited June 7, 2010 by 30edR32

[Harey]

Does this mean that setting the pineapples to all round position is the best for NOT lowering the subframe?

http://www.whiteline.com.au/instruction/203a_KCA349.pdf

What other ideas are there for a daily driver type of car?

Edited June 8, 2010 by Harey

[NZM.031]

Does this mean that setting the pineapples to all round position is the best for NOT lowering the subframe?

http://www.whiteline.com.au/instruction/203a_KCA349.pdf

What other ideas are there for a daily driver type of car?

thats right... by inserting pineapples... your actually making it worse.. they can be anywhere from 10mm to 15mm thick.. for a street driven car.. the only real option is not lowering your car excessively.. but if its a street driven car, you'd probs be hard pressed to be in a situation where your pushing it hard enough for the negative effects to show.. its really only on a racetrack where your really going to notice it...

its one of those comprimises you have to make... im of the opinion that if you have a performance car... performance comes first.. streetabilty comes second.

[nsmo30tt]

I might give the ones a try of the link I posted up.. they look similar to Simons metal ones, but theyre made out of Duravar.. which is meant to be a polyethylene type compound.. but stronger. Would be good to know if anyone has tried them?

[NZM.031]

i had alloy lock washers in mine and i hardly noticed any more NVH... not compared to adding super low and stiff coilovers, exhaust, low profile tyres and wide rims..

[Harey]

thats right... by inserting pineapples... your actually making it worse.. they can be anywhere from 10mm to 15mm thick.. for a street driven car.. the only real option is not lowering your car excessively.. but if its a street driven car, you'd probs be hard pressed to be in a situation where your pushing it hard enough for the negative effects to show.. its really only on a racetrack where your really going to notice it...

its one of those comprimises you have to make... im of the opinion that if you have a performance car... performance comes first.. streetabilty comes second.

But the pineapples can be inserted underneath the subframe. Yes it wont push the subframe up much but it definitely wont lower it (when the pineapples are installed in the all round position ie underneath subframe).

[Harey]

Picture from above link:

[NZM.031]

mounting the pinapples like that isnt going to give much of an increase in handling, they are just acting as a spacer for the nut.. the initial idea of the pinapples was to change the alignment of the cradle... nose down for less squat for drifting etc.. tail down for more squat for drags etc..

the handling increase comes from mounting them top and bottom and taking hardening up the crumbling cradle bushes.. but to get the best handling, you have to fully lock or eliminate those cradle bushes..

if you want a comfortable drive, leave them alone.. if you want to tighten up the cradle for better handling but less comfort.. get alloy lock rings..

it all comes down to what you want to achieve and what your prepared to do...

some guys even take it further than Simon...

[nsmo30tt]

would you recommend the alloy lock rings for a street car.. you say less comfort but that doesnt bother me too much.. aslong as its not going to damage anything.. and any good good alloy lock rings? links or pictures would be sweet.

Thanks

are you meaning these

http://www.jappartsuk.com/store/uploads/im..._large/1159.jpg

or

http://www.jappartsuk.com/store/uploads/im..._large/1158.jpg

Edited June 8, 2010 by 30edR32

[NZM.031]

the second ones are the slip on lock rings.. they are very easy to install.. and yes id recomend them.. they are fine on the street when the pay off is more control.. coilovers decrease comfort ten fold over what the rings do.

the first pic are replacement alloy bushes... you'd need to remove the subframe, get the old bushes pressed out, and then put those ones in..

these ones are better

because they allow the subframe to sit hard against the chassis.

[nsmo30tt]

ahk.. yeah I'm not really too worried about whats the easiest option.. just the best I've already had the rear subframe out to change bushes and it wasn't fun.. guess I'll do it again though. And if those on a street car aren't gunna damage things, whered you get them from?

[Harey]

mounting the pinapples like that isnt going to give much of an increase in handling, they are just acting as a spacer for the nut.. the initial idea of the pinapples was to change the alignment of the cradle... nose down for less squat for drifting etc.. tail down for more squat for drags etc..

the handling increase comes from mounting them top and bottom and taking hardening up the crumbling cradle bushes.. but to get the best handling, you have to fully lock or eliminate those cradle bushes..

if you want a comfortable drive, leave them alone.. if you want to tighten up the cradle for better handling but less comfort.. get alloy lock rings..

it all comes down to what you want to achieve and what your prepared to do...

Sorry I wasnt saying pineapples are the best thing to do, just saying that the pineapples dont have to lower the subframe. It depends how you install them.

[Simon-S14]

i had alloy lock washers in mine and i hardly noticed any more NVH... not compared to adding super low and stiff coilovers, exhaust, low profile tyres and wide rims..

cradle lockers sill have the rubber to act as a vibration absorber.

trust me fit solid alloy bushes and you'll feel everything haha.

Yeah seen Nigles subframe.. IMO way over the top and not needed but he likes to tinker so more power to him.

Pineapples dont do anything when fitted on the base of the subframe..not sure why they even recommend it.

[nsmo30tt]

What you guys think of

They aren't solid ones but look like the same design

Edited June 8, 2010 by 30edR32

[Harey]

cradle lockers sill have the rubber to act as a vibration absorber.

Pineapples dont do anything when fitted on the base of the subframe..not sure why they even recommend it.

They do the same thing the cradle lockers do, they just stiffen up the subframe movement to a lesser extent. Saves pulling the subframe off and more inclined for a street car that NVH is important on.

I dont understand why people suggest putting pineapples in the squat position when the ultimate is to solid mount the subframe which does not alter the diff pinion angle anyway??

Edited June 8, 2010 by Harey

[Simon-S14]

because its an outdated theory. From s14/r33 onwards the cradles have anti squat built into the subframes via pinion angle change.

30edR32 looks ok. whats the material used?

not a fan of the designs where its just a straight through hole. i like the ones that i had made and designed with a mate (i might be biased) because it retains the step washer that nissan use. as well as the front plates.

[nsmo30tt]

They're duravar UHMW polyethylene.. meant to be stronger than polyurethane ..if they are what they say they are then theyre stronger as -ene has more carbon bonds than -ane, but thats a different subject all together

Edited June 8, 2010 by 30edR32