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Old 09-27-2012, 02:44 PM   #10726
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I also use small shims on my racks and lots of loctite. If it binds a bit, I turn the screws back a bit until the play is minimal. Not hitting walls is the key to keep your rack from coming loose...
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Old 09-27-2012, 06:36 PM   #10727
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With fresh ballcups the 31022 Bellcrank posts were the main point of getting rid of slop. Due to manufacturing tolerances the posts tended to be a tad long allowing the bellcranks to give a little vertically. Carefully sanding the posts down a little at a time to the perfect height the rack will build slop free.
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Old 09-27-2012, 08:19 PM   #10728
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Selling my barely used and thoroughly modded TC4-

TC4 perfect for VTA or stock racing!

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Old 09-28-2012, 11:35 AM   #10729
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if you pm me about my TC4 and mention this thread ill give you a great deal on the car

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Old 09-28-2012, 03:13 PM   #10730
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Don't forget to crank your throttle expo up , and throttle acceleration up too .... Without them up, you'll get killed down the straight !!!
Why would any of this have any impact if you are at 100% throttle anyway? It's still 100% throttle regardless of these settings.
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Old 09-28-2012, 04:51 PM   #10731
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If you've never used expos and throttle acceleration, you are not getting max acceleration. Yes it's the same 100% as you said, but if I get twice as fast as you can, guess who gets blown away down the straight ????? With shaft drive, it's effects are more noticeable !!!
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Old 09-30-2012, 04:56 AM   #10732
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If you've never used expos and throttle acceleration, you are not getting max acceleration. Yes it's the same 100% as you said, but if I get twice as fast as you can, guess who gets blown away down the straight ????? With shaft drive, it's effects are more noticeable !!!
Well that seems logical. I will give it a try.

I have one other question since it seems like you have quite a bit of experience with the TC4 chassis. I saw earlier in this thread you recommended switching to the AE #31608 (X-2.5) factory team mount for the rear suspension arms. That part has been discontinued. The #31609 (X-2.0) part is still available. Will that perform basically the same? Thanks!
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Old 09-30-2012, 07:41 AM   #10733
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... That part has been discontinued...
http://www.ebay.com/sch/i.html?_odkw...31068&_sacat=0
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Old 09-30-2012, 05:47 PM   #10734
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Thanks!

However, I am still curious if there is a big difference between the 2.5 degree and 2 degree rear mounts. I can only assume they discontinued the 2.5 degree version because not as many people purchased it.
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Old 09-30-2012, 06:17 PM   #10735
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Not that much difference to me. I ran both two degree(tc4 rtr 17.5t), and 2.5degree(fttc4 13.5t) and I see no difference in rear traction on the same carpet surface. The 2.0 is supposedly faster down the straight, but I still see no difference. The rear seems planted enough in both cases to cause quite a bit of push. I will start tightening my rear diff a bit to gain some steering back...
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Old 09-30-2012, 06:25 PM   #10736
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Not that much difference to me. I ran both two degree(tc4 rtr 17.5t), and 2.5degree(fttc4 13.5t) and I see no difference in rear traction on the same carpet surface. The 2.0 is supposedly faster down the straight, but I still see no difference. The rear seems planted enough in both cases to cause quite a bit of push. I will start tightening my rear diff a bit to gain some steering back...
Thanks!
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Old 09-30-2012, 06:28 PM   #10737
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Cementsurfer86 and Reed60, you guys had your tc4's geared at 3.39fdr and 3.1fdr respectively. Did any of you crank your motor timing to the max ???? I am about to try max timing with my ballistic with gtb2 xdrive next practice time. I'll also run a tp5300 65c pack instead of my usual tp3200 40c packs... I use to keep up with comp down the straight, but now I plan to blow past them... Any of you guys using microlubricants(zmaxx, bestline, etc...) in your drivetrain?????
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Old 09-30-2012, 06:31 PM   #10738
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Cementsurfer86 and Reed60, you guys had your tc4's geared at 3.39fdr and 3.1fdr respectively. Did any of you crank your motor timing to the max ???? I am about to try max timing with my ballistic with gtb2 xdrive next practice time. I'll also run a tp5300 65c pack instead of my usual tp3200 40c packs... I use to keep up with comp down the straight, but now I plan to blow past them... Any of you guys using microlubricants(zmaxx, bestline, etc...) in your drivetrain?????
The only thing you'll be blowing with a novak @3.4 with max timing is smoke.
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Old 09-30-2012, 06:36 PM   #10739
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Don't say that Mike ! I had Delacruz in my sights down the straight at 360v2 last Wednesday... If only I could pull him a bit..... I think max timing will do just fine at 3.65fdr... You coming down next Wednesday???? I know Coach is scared....lol....
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Old 09-30-2012, 11:55 PM   #10740
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Originally Posted by bertrandsv87 View Post
Cementsurfer86 and Reed60, you guys had your tc4's geared at 3.39fdr and 3.1fdr respectively. Did any of you crank your motor timing to the max ???? I am about to try max timing with my ballistic with gtb2 xdrive next practice time. I'll also run a tp5300 65c pack instead of my usual tp3200 40c packs... I use to keep up with comp down the straight, but now I plan to blow past them... Any of you guys using microlubricants(zmaxx, bestline, etc...) in your drivetrain?????
As of right now I'm sitting at a 3.21 fdr, with 42 degrees of timing, and damn near pulled off the win last night in our scale spec main against much more expensive equipment. Our track is pretty big, so I'm able to get away with it, but I've also gone in small increments as well, so I don't burn my stuff up. Start at 35 degrees and go in 5 degree increments from there. At a 3.65 fdr, full timing will be just fine, just temp the motor after a few mins to be sure.

(On a side note, I temp'd my motor right after the main, and I was at around 150 deg. Not too bad.)
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