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Harold's 1999 sport build

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Old 03-18-2017 | 05:02 PM
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well, during the shock change i noticed that the rear upright top bushing was moving inside the upright and had worn itself to where i could push it outby hand, called Mazdaspeed to order new ones and was told that they have competition bushings available (40% harder duometer) so i ordered a car set...
When doing the bushings i also installed new 11.75 front brakes and the two pice track rotors as well as the 3.63:1 rear end

Last edited by HHammerly; 03-18-2017 at 05:09 PM. Reason: Finish post
Old 03-18-2017 | 05:29 PM
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What was the ratio of your old diff? I may be interested in it.
Old 03-18-2017 | 05:34 PM
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Originally Posted by zellers88
What was the ratio of your old diff? I may be interested in it.
i have a 3.9-1 ring and pinion that i took out when installing the 3.3-1 gear set
Old 03-18-2017 | 05:40 PM
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Originally Posted by HHammerly
i have a 3.9-1 ring and pinion that i took out when installing the 3.3-1 gear set
Ahh I see. I was thinking you swapped complete diffs.
Old 03-18-2017 | 06:07 PM
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Originally Posted by zellers88
Ahh I see. I was thinking you swapped complete diffs.
pretty hard to find a diff with the 3.3 gears in it since they are a europe or australian optionand are pretty heavy to ship...
Old 03-18-2017 | 10:06 PM
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Sooooooo, think this will he ready by Memorial Day?
Old 03-19-2017 | 12:28 AM
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Originally Posted by glade
Sooooooo, think this will he ready by Memorial Day?
You better belive that it will be ready!! I have an aligment scheduled for next week and the only thing left to do is to change the engine oil and rent a trailer
The rear end is going back together, now but when taking it apart i noticed that the upper a arm inboard bushings had moved and the arm was hitting the front of the saddles, so i think that the worn upright bushing was worn because it would move fwd under acceleration and backwards during braking.
to prevent this from happening in the future i trimmed the bushing "end washers" and made delrin washers to fill the gaps between the a arm and upright - attachments, will see how it works on Memorial day!





Old 03-19-2017 | 10:46 AM
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Originally Posted by HHammerly
i have a 3.9-1 ring and pinion that i took out when installing the 3.3-1 gear set
Out of curiosity, what do the 3.9s usually go for? I might want one in the nearish future.

That said, I have a 4.3 torsen now and I have a feeling that the open diff sitting in my garage is better off being sold as 4.3 gears...
Old 03-19-2017 | 12:12 PM
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You probably get the most out of your open diff if you weld it, install the 4.3-1 gears and sell it to a drifter, price wise i just got a complete 4.3-1 torsen with energy suspension bushings for $500 but i think than that was on the low side price wise, the 3,9 i have cost me $650.
i now have complete rear ends with 3.6, 3.9 and 4.3 gears, the 4.3 is there in case i ever go na or do a k swap.
Old 03-20-2017 | 03:17 PM
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Originally Posted by HHammerly
You probably get the most out of your open diff if you weld it, install the 4.3-1 gears and sell it to a drifter, price wise i just got a complete 4.3-1 torsen with energy suspension bushings for $500 but i think than that was on the low side price wise, the 3,9 i have cost me $650.
i now have complete rear ends with 3.6, 3.9 and 4.3 gears, the 4.3 is there in case i ever go na or do a k swap.
Thanks for the info, sir!
Old 03-24-2017 | 09:55 PM
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Here is another session with a wet track but not raining at the time


Last edited by aidandj; 05-30-2017 at 10:35 PM.
Old 03-27-2017, 08:46 AM
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Old 05-25-2017 | 10:16 PM
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Track day last sunday, the car is running well, love the new shocks !
Leak down was good just have to check hubs and brakes before Gingerman next Monday 😎




Last edited by aidandj; 05-30-2017 at 10:35 PM.
Old 05-30-2017 | 09:54 PM
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Great time at Gingerman raceway, big thanks to Glade for the invite and letting me drive his sweet handling NA 👍 SOOO much fun!


Last edited by aidandj; 05-30-2017 at 10:35 PM.
Old 05-31-2017 | 12:21 AM
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Nice build! look forward to seeing feedback on the Xidas as those are my next purchase
Old 05-31-2017 | 12:58 AM
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Do you still use that same exhaust from 2014? Sounds really good to me.
Old 05-31-2017 | 01:09 AM
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Fixed all your youtube links. Mobile is broken right now. so URLs don't get automatically linked.
Old 05-31-2017 | 05:50 AM
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Originally Posted by aidandj
Fixed all your youtube links. Mobile is broken right now. so URLs don't get automatically linked.
Thanks for fixing the youtube link.
Regarding the Xidias i am very happy with them, still playing to get the car balanced, i have some brake lockup on trail braking (you can see it on the first lap corner 2) that i tried to solve by going to a softer rear sway but the problem is still there and the car was pushing really bad until i took the wicker off and stiffened the rear shock valves, i will install a proportioning valve to take care of the braking issue and go back to my bigger rear bar.
i still have the same exhaust from 2014 on the car, it is pretty quiet (that was ome of the goals when building it) a little heavy but it flows well and is not hitting anything, i use a remote microphone cliped on to the back of the trunk lid on the gopro, that is why you can hear the exhaust so clearly on the videos
Old 05-31-2017 | 06:15 AM
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Car looks great and Gingerman looks like a ton of fun. Sounds like you need the Wilwood proportional valve. Does your car have ABS?
Old 05-31-2017 | 08:13 AM
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Originally Posted by zellers88
Car looks great and Gingerman looks like a ton of fun. Sounds like you need the Wilwood proportional valve. Does your car have ABS?
Gingerman is really fun We need to plan on making it to a track day as a group with all the Indy guys ( Glade can come as an honorary Indy Guy LOL)
No ABS on my car, i will get the wilwood proportioning valve and install it but was hoping to wait until the motor swap... i really want to install it with a cable or in the dash so i can change it while driving
Old 05-31-2017 | 12:48 PM
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I would absolutely be down for a Gingerman day with the Indy group.
I like the idea of in-car adjustment for the prop valve. You could probably get it very dialed in within one session that way.


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