Tony Jackson's Street/Track TSX Build - Page 21 - Acura TSX Forum
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post #301 of 395 (permalink) Old 01-09-2019, 01:45 AM
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post #302 of 395 (permalink) Old 01-09-2019, 11:03 PM Thread Starter
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Too much send! lol
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post #303 of 395 (permalink) Old 01-10-2019, 12:09 AM
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Too much send! lol
Probably forgot which side he was sitting on, Euro R Gaijin attack!!!!
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post #304 of 395 (permalink) Old 01-10-2019, 02:51 AM
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Some thoughts on sub-frame since I have researched a bit about TSX chassis, comparing it to more recent cars like TLX, Accords and BMW to see where it can be strengthened.

For sub-frame, I actually would rather add weight to strengthen it then taking out weight. The weight there is good mass - since it sits low, helps noise/vibration and improves handling. Besides, the factory design looks lean already. Not saying it is impossible but for sure not simple.
The sub frame is a mass produced cost conscious piece designed for a road car on 2004 tires - the force produced by more modern tires and improved suspension dramatically increases stress on the chassis.

This example by opera performance for an s2000 gives a good idea of a modified sub frame - however if you notice the large dimpled holes everywhere - this is an old trick to reducing weight and increasing stiffness as it's very hard to deform a radius-ed circle



JUN Auto's version has alot more holes and showcases the seam welding most of these options have too



However there is a level beyond this and it used to be alot more popular, full replacement - especially if you have lightened the engine, or running a 3 mount setup

This version from Beatrush for the WRX is a good example and probably shaves quite a bit off while still performing well.



This is a full road race and drag race piece for the GTR and it's 20 pounds lighter and offers superior geometry for lowered cars and steering arm angles, it also vastly outperforms the factory piece.

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post #305 of 395 (permalink) Old 01-10-2019, 03:00 AM
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Also the spoon collars while locking in what should be the perfect front and rear sub frame placement - do something else far more important. If you have ever added a washer to a bolt you can understand the concept. It creates a larger surface area at the mating points and not only makes them stronger, but resists the bending force on the sub frame mounting bolts. Which under heavy load deform even there mountings. This is why ideally the bolts are left slightly loose until the car is sitting on the ground to properly load them. Technically the added stiffness means you could reduce the spring rates and achieve the same grip.
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post #306 of 395 (permalink) Old 01-10-2019, 07:19 PM Thread Starter
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Thanks for this! I'm sure there's lots of room for improvement with the front subframe on these cars. Maybe one day if I turn this thing into a real race car I can look into doing a lighter, stronger subframe replacement.
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post #307 of 395 (permalink) Old 01-20-2019, 06:40 AM
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Thank you! Gingerman is a fun track but it's a solid 3 day drive from me.
3 days! it's about 5 hour drive from where I am. Just have to cross the border into Michigan.
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post #308 of 395 (permalink) Old 02-12-2019, 02:46 PM Thread Starter
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I haven't really touched the TSX since going to Buttonwillow at the end of December. I have been brewing up a few upgrades lately and hoping to get these installed in the next couple of weeks. I signed up for the VTEC Club event at Chuckwalla Valley Raceway on March 10th and have a few upgrades I'd like sorted by then.

Planned Upgrades Include:
Hard Race rear knuckle bushings
PCI Front Compliance Bearing (giving this another shot)
New Front Wheel Bearings, Hubs, Extended Studs and 15mm Eibach Spacer
RBC Manifold

Cleaning my spare rear knuckle assembly




Pressing in the new bushings




I'm also prepping a few spare parts from the silver TSX to get painted Milano Red






Speaking of the silver TSX - it's pretty much completely stripped at this point and will be trying to get rid of the shell in the very near future.

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post #309 of 395 (permalink) Old 02-12-2019, 03:04 PM
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You know I am all about the PCI (We call them FLP/PCI since we got Brian off his butt to make them in the first place) bushings. I love them. But IMO only compliance bushings are needed. I myself don't think the smaller frame-mount location is as beneficial on a mixed street/track car.
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post #310 of 395 (permalink) Old 02-12-2019, 05:13 PM Thread Starter
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You know I am all about the PCI (We call them FLP/PCI since we got Brian off his butt to make them in the first place) bushings. I love them. But IMO only compliance bushings are needed. I myself don't think the smaller frame-mount location is as beneficial on a mixed street/track car.
Yep, and that's why I wanted to give them a second try now that the front coilovers, spring rates, ride height and ride frequencies have been sorted out. I also feel that spotting the difference between a track only and street mod is all subjective to driver experience and usage.

I'm not sure what you mean by "smaller frame-mount location." Can you clarify which part you're referring to?
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post #311 of 395 (permalink) Old 02-12-2019, 07:01 PM
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It is the trailing bushing in the front lower arm. Basically the small bearing PCI gives you.

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post #312 of 395 (permalink) Old 02-12-2019, 07:26 PM Thread Starter
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It is the trailing bushing in the front lower arm. Basically the small bearing PCI gives you.
Ahh! I didn't get that bearing when I got the compliance set. Still on the stock bushing there. I'm actually headed to PCI on my way home to drop off some springs for Brian. I'll have to ask him about that.
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post #313 of 395 (permalink) Old 02-15-2019, 03:55 AM
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Finally he will finish the RSX just in time for that new exhaust law to go into effect...:P

Looks like you have a giant silver problem only solved by judicious use of a sawzall and a random dumpster behind a super market or 3
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post #314 of 395 (permalink) Old 02-15-2019, 02:41 PM Thread Starter
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Looks like you have a giant silver problem only solved by judicious use of a sawzall and a random dumpster behind a super market or 3
I've been there, done that before with an E36 M3 I chopped up for parts. Not fun! Trying to avoid that and hoping someone will scoop it for metal recycling or something.
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post #315 of 395 (permalink) Old 02-25-2019, 01:28 PM Thread Starter
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Did some cutting over the weekend and finally have some garage space back. Below are a few pictures I took of the progress.

I signed up for VTEC Club's round 1 at Chuckwalla next month on the 10th. Now that the silver TSX is out of the way I can start working on more updates on the red TSX. More to come soon!









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