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-   -   A review of my first suspension/chassis setup. All the pros and cons. (https://www.ft86club.com/forums/showthread.php?t=118380)

#my86build 05-08-2017 11:24 PM

A review of my first suspension/chassis setup. All the pros and cons.
 
Greetings

Cole 05-09-2017 06:59 AM

You lost me at the rear strut bar actually making a difference. Many well respected people on here have verified that there is no advantage to have a rear strut bar.

You also don't mention what kind of driving you do, what your experience levels is, etc. Sounds like you made about a thousand changes between your chassis, suspension and driveline within very short periods of time, so I very much doubt you know how it feels from part change to part change.

Captain Snooze 05-09-2017 07:52 AM

Quote:

Originally Posted by #my86build (Post 2906923)
4) ISC lower control arms - Let me start by saying, If I could be bothered to do so, I would make products for this platform. It's not rocket science. Scan the factory one, do the 6061 billet aluminum thingy everyone does, apply color, apply name and done. With that being said, why couldn't you coat the bolts that do the adjusting? Or just use better ones? 2 days in the rain and I had rust forming on them! 2!!!

I guess you haven't seen the Velox rear lca development thread. And it's 6061-T6 not 6061.

Quote:

Originally Posted by #my86build (Post 2906923)
5) Cusco Crossmember Brace (rear)

lol

8RZ 05-09-2017 07:53 AM

Those are great for hard parkers.

swarb 05-09-2017 08:25 AM

1. Grimspeed did testing with their solid(not pivoting like the cusco)front strut bar, deflection was something like 3-4mm total with out it. With all the bushings and soft tires etc, would steering rack bushings done the same thing? The master cylinder brace does help with pedal feel.
2. Look at post above mine. I'd tell you to ask someone to have you take a blind test drive with it installed and not installed. And finally a 3rd time, and you try to guess which is which among the 3 tests. You'll be looking for noise isolation more than actual feel imo. Loss of trunk space sucks too.
3. Hotchkis is known to overbar cars and it creates cross talk associated with it. One side hits a bump, you'll feel it on the other side. They are more autocross oriented than anything. Not sure if they went for a more modest setup for this chassis.
4. $475, I'd would have gone spl or velox for a little more. Or the cheaper route with spc. But it's your money, plus the cool color!! Looking at the pic, they couldn't even get the correct nuts and bolts so they used washers(fits loose) instead. That zip tie in the end... to hold the metal insert in the bushing... those tolerances scream out "made in random chinese factory"
5. Is the added weight worth it? I personally would have gone with firmer bushings or metal inserts to replace rubber parts that are known deflect quite a bit over some bars that supposedly stop metal chassis parts from deflecting(the rubber bushings are still there!). But hey, I'm not an engineer, just a keyboard warrior. Cusco does make like 20 types of bars for this car.

What tires are you using? what alignment? what brakes? what tracking or competitive driving do you do? Stiffer is not always better. The chassis is plenty stiff for street tires and lower(most) skill levels.

dattran86 05-09-2017 08:48 AM

struts bar is really good when you hard park at the local car meet with your hood open to show off the engine bay, not sure if it actually made a noticeable difference in handling.

i could be wrong.

venturaII 05-09-2017 08:51 AM

Why people will immediately throw a completely new suspension on a car before even getting a decent alignment and some good wheels and tires is beyond me. But, I bet it looks nice.

D_Thissen 05-09-2017 09:14 AM

Another victim of advertising and the 'butt dyno'.

D_Thissen 05-09-2017 09:16 AM

Quote:

Originally Posted by dattran86 (Post 2907025)
struts bar is really good when you hard park at the local car meet with your hood open to show off the engine bay, not sure if it actually made a noticeable difference in handling.

i could be wrong.

They could be beneficial on a car that lacks a roof for structural rigidity. I know early 1990's GM convertibles had them. That said, the 86 chassis is plenty stiff for the majority of owners.

StraightOuttaCanadaEh 05-09-2017 09:26 AM

Actually my first observation in this car was just stiff and "well bolted together" it felt.

venturaII 05-09-2017 09:38 AM

I don't want it to sound like I'm against modding the car - there's a rich aftermarket for it, there are lots of good products, and it's your car to do what you want. I'm sure all the parts look cool. But given your choices, I question whether you've got the experience/skill to actually determine that the car has actually improved. I'm sure it feels different, but if you drove an otherwise stock car with a really good alignment, and compared it to yours, I wonder if you'd be able to tell which is which...?

Cole 05-09-2017 10:57 AM

Quote:

Originally Posted by venturaII (Post 2907042)
I don't want it to sound like I'm against modding the car - there's a rich aftermarket for it, there are lots of good products, and it's your car to do what you want. I'm sure all the parts look cool. But given your choices, I question whether you've got the experience/skill to actually determine that the car has actually improved. I'm sure it feels different, but if you drove an otherwise stock car with a really good alignment, and compared it to yours, I wonder if you'd be able to tell which is which...?

The only change I could ever feel was adding -3* camber up front. Oh, and the changed ride after lowering springs.

venturaII 05-09-2017 12:50 PM

Quote:

Originally Posted by #my86build (Post 2907170)
I've played Gran Turismo on the Playstation before and I know heel and toe requires the use of your hands and shifting speed.



This thread just jumped my shark.

boredom.is.me 05-09-2017 12:52 PM

This would have been an amazing troll post if the op wasn't serious.

In order to review anything, you have to actually know what you're talking about. You don't know what you were trying to fix. You don't know what change there would be if any. And to make it worse, you did it all together. Realistically, you just paid to make the car "pretty". And I say that with quotes because I personally think Cusco (for this platform) is garbage.

I'm not trying to be an asshole. It is the sad truth though

strat61caster 05-09-2017 12:53 PM

Quote:

Originally Posted by venturaII (Post 2907177)
This thread just jumped my shark.

:popcorn:

venturaII 05-09-2017 01:08 PM

"Passed" means it was somewhere within the wildly variable range of allowable specs. Nowhere close to an optimum setup for handling. And if you changed springs and didn't get another alignment, then that's a fail as well.

strat61caster 05-09-2017 01:11 PM

Quote:

Originally Posted by #my86build (Post 2907201)
Are we talking about an alignment that differs from factory spec?

You can be within factory specs and have a 'good' alignment. You can also be within factory specs and have an objectively bad alignment for performance driving.

It'll go down the road fine enough, but you're losing a lot of feel and performance.

venturaII 05-09-2017 01:16 PM

Quote:

Originally Posted by #my86build (Post 2907201)
See, you can be positive. You "questioning" my experience/skill is better than children who assume. Are we talking about an alignment that differs from factory spec?



So the fact that you're asking these questions sort of proves out the assumption made by others (and myself, tbh) that your experience/ability to tell what's good or bad is lacking. Not a slam - just stating what seems to be obvious.


And yes, the factory alignment specs are decidedly less than optimum for handling. The tradeoff is better tire wear, less tendency to tramline, more braking stability, etc. But if you want a car that responds well to steering input, those other qualities will suffer.

Icecreamtruk 05-09-2017 02:08 PM

This thread is good, keep it going guys :popcorn:

boredom.is.me 05-09-2017 05:21 PM

You have some homework to do. If you don't know what an alignment is, that's the first place to start. Look up camber, toe, caster, and how each one has an effect on the way a car handles. Do that, tell us what you learned, then we can move on to the next step. Don't even say a single word about your "next build".

strat61caster 05-09-2017 05:29 PM

Quote:

Originally Posted by boredom.is.me (Post 2907339)
You have some homework to do. If you don't know what an alignment is, that's the first place to start. Look up camber, toe, caster, and how each one has an effect on the way a car handles. Do that, tell us what you learned, then we can move on to the next step. Don't even say a single word about your "next build".

meh homework is lame, either OP will spend two hours reading wikipedia articles about vehicle dynamics or he won't. Telling him to do so won't change that.

Captain Snooze 05-09-2017 05:50 PM

Quote:

Originally Posted by dattran86 (Post 2907025)
struts bar is really good when you hard park at the local car meet with your hood open to show off the engine bay, not sure if it actually made a noticeable difference in handling.

Uh-oh. I am going to open a subject that has already been done to death but you know, because internet.

I made fun of the rear strut bar BUT the front strut bar is a different matter. Myself and many others have commented on a marked difference in feel after having a front strut bar fitted.

This post sums it up well:
Quote:

Originally Posted by Speedie (Post 1212424)
Hi,

I recently received my GS bar, and was keen to see the difference this modification would bring to the feel of the car. With the help of my brother we came up with a homegrown blind test. (Both my brother and I have science backgrounds and could be fairly accused of suffering from mild OCD :)).

The test was this, done five times.

A. My brother would toss a coin, heads the bar is installed, tails not.
B. In either case, step A would take fifteen minutes.
C. I am not in the garage and cannot hear what he is doing
D. My brother when finished step A and B would then pack up the tools, toot the horn and leave the garage.
E. I would take the car for a fifteen minute drive. Same circuit each time, I would note down whether I thought the bar was in or out.
F. When I returned, I would signal with the horn, leave the garage without crossing paths with my brother
G. At the end of five tests, we compared the results.

My brother had out, in, in, out, in.

I had out, in, in, out, in.

I don't want to scare anyone with how OCD I am, but the chances of me guessing correctly this sequence is one in thirty two, or a little over three percent.

Apart from having an enjoyable afternoon spent with my brother having some fun with cars, which we both have keen interests in, I am happily convinced this modification does make a difference for me.

For me it was clear very early in each drive whether the bar was in or not. The noise from bumps was subdued, the steering felt tighter and sharper and the car felt stiffer. I know these are all seat of the pants observations and hard to measure, all I can say is that for me I noticed differences that I liked and when I noticed these differences, it lined up with the bar being in.

So for what it's worth, I am satisfied that the bar makes a difference for me, which I very much like.

Ralph.


Lust 05-09-2017 07:01 PM

Quote:

Originally Posted by #my86build (Post 2907399)
I do know what an alignment is, you silly rabbit you. I just didn't know the difference between the factory one and a more performance orientated one. I will take your suggestion about researching camber, toe and caster. However, If I feel I have something to share, I will. If what I share is not of use to you or you feel what I am saying is wrong, you are welcome to correct it, but, "don't even say a single word about your "next build", is a bit harsh. I'll make sure to seek your permission the next time I post. :bow::bow::bow:

Typically when someone reviews something they're somewhat knowledgeable about the item or subject...

swarb 05-10-2017 07:50 AM

Quote:

Originally Posted by #my86build (Post 2907446)
Thank you for your useful feedback. I did some of #5 on my new build. On my previous build, I was running 17x9 RPF1s with Hankook 245/40/17 RS3s, stock alignment and stock brakes. I'm planning on getting in some track time this summer. Agree, stiffer is not always better. Learned that the hard way, but at least I learned. My driving skill level, IMO is a 3/10, if 10 is pro.

You're welcome. We all throw money at the car buying parts. Although it is not always ideal, if it makes us happy... :thumbsup:
Suggestion to get some decent(not entry level) brake pads and brake fluid, and add some camber(2++) up front with some camber bolts and you should have a good base for the track.


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