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#43 | |
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My 86 with subframe and diff support inserts has enough NVH to annoy the missus that she wants the windows down if we go for a drive, even when its 35!° C. Noise mainly, some vibrations at certain RPM's. 75% of my noise comes from the Whiteline diff inserts. The added NVH from inserts doesn't bother me "much" though.
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#44 | |
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#45 |
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I installed finally the tS >16 lower stoppers with tS longer bolts in all four subframe corners.
Car seems little bit more predictable when sliding or during weight transfer on continuous corners, imho it should have them from the factory. No NVH increase, may be due to stiffened rear end it is more comfort now but the difference is tiny anyway. |
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The Following User Says Thank You to JIM THEO For This Useful Post: | nikitopo (02-09-2019) |
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#46 |
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All 4? Shouldn't they go in front only?
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#47 |
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There were some reviews in the past that the fronts do most of the work, but I'm thinking now that it is best to install all 4. You should get a bit more improvement with the rears. It looks that STI installed only the fronts to keep the cost lower. Not so much because of the additional cost of the part, but the additional installation work. I remember to pay more for labor than the parts when I installed the front in my car. Normally you don't remove completely the subframe, so I guess you need extra time if you do both front the rear.
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Last edited by nikitopo; 02-10-2019 at 05:21 AM. |
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#48 | |
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#49 |
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Has anyone mentioned the spoon rigid collars yet? I plan on doing those in conjunction with the WL subframe inserts.
Spoon has a cool video explaining how the rigid collars work, but in short, they help mate the irregular surfaces of the subframe and chassis together. Manufacturing processes don't allow perfect mating surfaces between the subframe and chassis, and these are supposed to fill in that area making the mounting points completely flush. This supposedly equates to a whole bunch of handling goodness ![]() https://www.spoonsports.eu/50261-na1-001.html Some of the speedhunter guys have them on their cars as well. http://www.speedhunters.com/2018/01/...-honda-heaven/ http://www.speedhunters.com/2011/06/...s_to_the_gt_r/
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#50 | |
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See yourself the difference between the tow bolts: ![]() |
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#51 |
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Huh, interesting. So the "TS" bolts are different dimensionally, and still work?!
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#52 |
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I'm really interested in some thoughts from the group on this topic. I am planning to do something relatively soon, and I'm split on whether I should run Spoon rigid collars, or if I should go for full solid bushings like those from SPL, or if I should do bushing topper inserts like the Whiteline ones for my subframe. I really want to reduce subframe slop, because as I've gotten stickier tires it's more and more obvious how much the body moves.
What's the consensus on the best solution that isn't going to absolutely torture me if I happen to drive on a rough road (which is unfortunately all over the place here in SATX)? |
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#53 |
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Daily driver? It all comes down to you, man. How hardcore are you? I drove solid subframe and diff mount along with all kinds of other "track" parts a hundred or so miles everyday for months. Some of my friends hate how loud the exaust is in the car, or how much vibration there can be while driving, harsh bumps. And I completely understand why, but they're also just a passenger, they dont feel the wheel in their hands, or how the car moves under you. All essentially useless when you're sitting in your commute. The largest noticeable differences for me was how quick the rear responded to hard throttle/clutch kicks, cured wheel hop and quick direction change stability.
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