moralesrx7

check it out TSR's chromoly subframe connectors for the 3rd gen rex


http://www.torquecentral.com/showthread.php?t=40674

wanklin

iTrader: (2)

Nice find.

DamonB

Looks like another useless aftermarket part. The FD chassis is already extremely stiff.

dubulup

I'm with DamonB...let's add weight!!! and talk about nightmare if you have to drop either subframe...

it might be a good buy on a f-body...but the FD

moralesrx7

lol ... drop the subframe........the connectors weld on to the frame rails. The frame rails dont unbolt from the car. The connectors will never have to come off theres nothing you would be blocked from getting to, anyway the rx7 is a unibody of sort and there are parts made in japan that connect the chassis that cost over $750 it just depends on if you push the car to feel the difference. this is just another way of doing it for alot less. also keep in mine a roll cage adds alot of weight and greatly stiffens up the chassis of the car. just think about it.

thanks Jerad

DamonB

If my car had as much rust in it as the one in those pics I might need more chassis reinforement as well

DamonB

...and those parts are actually somewhat useful for a raced FD chassis because they actually reinforce suspension pickup points which these tubes do not.

I did and structurally those are nearly useless. They merely tie one of the stoutest parts of the body to one of the other stoutest parts of the body. I'm sure somebody will polish or powdercoat a set and declare them the best thing since sliced bread though.

DaveW

They'd make a good place to jack the car up ... and act like skid plates for off-roading...

Dave

moralesrx7

sorry the car has so much rust..lol but thanks
now the parts from japan DO NOT Tie in the the suspension points and please do some research i can see you have never seen a subframe connector installed like i said please look it up none of them tie in the suspension points thats not the point the point is to tie the strongest point in the front to the strongest in the back if you think im wrong look up pictures of any sub connector in a f-body, mustang, or any unibody car. can you even show me a part made in japan for any of there supercars doing what u said (i dont men side to side but front to back). for those of you who dont think this will help thats fine, but most of you with a scca/ drag background will agree these will help.

moralesrx7

tubes hang a total of 1" below the pinch welds... nothing wrong with dual purpose parts (jack points) because you know the floor is so strong and the chassis is so stiff that you can place a jack anywhere under the car....who wouldn't want a better jack point and stiffer chassis on these cars for a whole 17lbs

DamonB

I've been underneath quite a few Camaros and Mustangs with subframe connectors. Unfortunately the way that part is made isn't of any real benefit to the FD. Should the Camaros and Mustangs install aluminum AST's?


I've got one. DaveW even more so. Others in this thread may as well but I don't know that off the top of my head.

moralesrx7

so do the camaros and mustangs tie in the susp.? like u said

jimlab

...and protects the occupants.

There's a big difference between trading some extra weight in return for the benefits of a roll cage and adding rails beneath the car whose only benefit would be for grinding down sidewalks and railings with the skateboarders.

Damon has an SCCA background, and I have a drag racing background and neither of us thinks this mod is worth the effort. Anyone truly serious about drag racing would back-half the car or build a full tube frame car anyway.

There are already excellent jack points on the cars... the front and rear subframes.

Are you looking to sell these, or is there some other reason why you'd be so concerned that people don't see them as necessary?

DamonB

The Camaro and Mustang connectors reinforce a floppy chassis. The FD chassis is not a floppy structure, especially compared to a Mustang or Camaro.

moralesrx7

please show me how these are so much different these also these are made from mild steel

DamonB

He is either selling them or has already bought a set and is disappointed we don't like them

DamonB

The most obvious thing I see is that those are not attached to an FD.

Here's a nugget for you: Just because it pays dividends on one car doesn't mean it does the same for another.

moralesrx7

im selling these but be sides that im not concerned about people thinking they necessary there not but to say that that wont help and are useless in the autox world or drag racing is just stupid. and mine is a back-half car

jimlab

Obviously. Well, sell them to the dummies on Torque Central. They'll show a lot of interest, but unfortunately most of them don't have any money.

Do you have any hard data to back that up?

Good for you.

jimlab

Not to mention the fact that he doesn't even have them installed on his own car yet, so he has no idea what benefit, if any, they provide.

This is as stupid as using a torque arm on an IRS car. Granny's and Hinson did it because the cars the drivetrains come from have them, but they didn't stop to consider that those cars also have live rear axles and therefore need them.

The rigidity of unibody construction has come a long way since the 1960s... at least for manufacturers other than Ford and GM. The FD doesn't need a longitudinal bracing system.

moralesrx7

do you have any to say they wont? you know jim being you seem to know alot get off it. you know as well as anyone that these would help to stiffen the frame and yes a fbody to a stang to a 300z to a fd are going to be different but that doesnt mean that all wont benfit to a larger sway-bar, tb, stronger driveshaft, roll cage, and so on the point stays the same, these bars tie the subframe together not the susp. and bening your buddy knows alot to scca and you know drag would you agree that subframe connectors bolt/weld to the susp. points?

moralesrx7

sorry i dont have them installed, my bad... good point
we'll also making a trans cross member and lsx tubular choromly subframe to but hey what do we know.

jimlab

Yes. 15+ years of the FD being incredibly competitive in SCCA and drag racing without them.

Bullshit. Just extra weight for extremely minimal benefit.

All modifications that provide some tangible benefit to handling, performance, or strength... do your bars provide that?

That crackling you hear is fire... jump out and pull the cord on your chute. You're all done here.

jimlab

How to recreate parts that others have already made, apparently.

moralesrx7

open challenge
to any one who have a fd that is autox 60% of time that can drive or any fd drag car runing low 10s ill ship them a pair for cost including u jim if you have a running car (im sure you do) to test and write a review