Eric Anderson's Supercharged SSM Miata
#504
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Here is a quick summary of the biggest off season upgrade for LaFawnduh.
Went from the Quaife gearbox which I NEVER had a single mechanical issue with to a G-Force GSR Dog Box. This is the same gearbox used in the current generation Nascar cup cars. I had been a little un-easy about turning it all the way up with the Quaife in the car.....now "I ain't skeered" I'm going to crank it up to 11 for this season
Went from the Quaife gearbox which I NEVER had a single mechanical issue with to a G-Force GSR Dog Box. This is the same gearbox used in the current generation Nascar cup cars. I had been a little un-easy about turning it all the way up with the Quaife in the car.....now "I ain't skeered" I'm going to crank it up to 11 for this season
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Got the shifter boot in today. Now the swap is complete.
On to getting the rest of the car back together......new ignition system, new ECU and more boost being tuned on Feb 25th.....running out of time.
Yea, It's a Quicktime Bellhousing. It was actually not all that bad mating the gearbox to the BP. I used a Miata flywheel, Miata pressure plate and a clutch disk from a 2009 Saturn Sky Redline. The standard 26 spline GM input shaft is the correct length. The hardest part was building the mount to incorporate the PPF and setting up the Tilton 4000 series TO bearing.
On to getting the rest of the car back together......new ignition system, new ECU and more boost being tuned on Feb 25th.....running out of time.
Yea, It's a Quicktime Bellhousing. It was actually not all that bad mating the gearbox to the BP. I used a Miata flywheel, Miata pressure plate and a clutch disk from a 2009 Saturn Sky Redline. The standard 26 spline GM input shaft is the correct length. The hardest part was building the mount to incorporate the PPF and setting up the Tilton 4000 series TO bearing.
#510
Two different items I think. Quaife gearset vs Quaife sequential trans. Gearsets are/were around $2.5k last I saw, plus install. QBE60G sequential (what we have) is rated for a bit less power than Eric is probably making so the smart choice would be the QBE69G rated for 750bhp, $9700 for the box plus a 3-4k to get in and dialed. Used NASCAR box can be found cheap, rebuilt cheap and nigh indestructible at his power level. Quite likely he will run most courses in 2nd gear so shift speed on par with a sequential, <100ms.
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We have also been running a sprung organic disk clutch in the car. We did go to a sprung 6 puck this year. If we end up breaking axles or diffs, I will go back to the sprung organic disk.
Two different items I think. Quaife gearset vs Quaife sequential trans. Gearsets are/were around $2.5k last I saw, plus install. QBE60G sequential (what we have) is rated for a bit less power than Eric is probably making so the smart choice would be the QBE69G rated for 750bhp, $9700 for the box plus a 3-4k to get in and dialed. Used NASCAR box can be found cheap, rebuilt cheap and nigh indestructible at his power level. Quite likely he will run most courses in 2nd gear so shift speed on par with a sequential, <100ms.
It was exactly 11 lbs heavier with the bellhousing attached than a stock 5 speed. But that weight is low and in the center of the car. With the strength of the gearbox and the added ability to "No lift no Clutch shift" it was well worth the weight. We did take close to 14 lbs of unprung weight off the car....so it will be near the same weight when it's all said and done
This is a Mag case and yes, you can have the gearbox apart and the gear stack completely dissembled in about 10 min. We could easily execute a 2nd or 3rd gear change in between Pro Solo sessions
Last edited by TNTUBA; 02-01-2019 at 07:55 PM.
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Got the dash back in and all the gauges re-installed. Got the wires for the Line Lock / Burnout rev limiter installed.
With that update, I will call the trans swap now 100% complete. It was a bit more work than I had anticipated in some areas....and a bit easier in others. All in all, I am quite pleased with how it turned out from visually. I was hoping it would look totally stock in the car....and I think we came out close. In these two pictures the shifter is in 1st gear. It sits about 2 to 3" farther forward than the stock shifter. But man...the throws are SUPER short, super precise and with the way the shifter is designed, I can't imagine EVER missing 3rd gear.
I cannot WAIT to get this thing on course in a few weeks.
With that update, I will call the trans swap now 100% complete. It was a bit more work than I had anticipated in some areas....and a bit easier in others. All in all, I am quite pleased with how it turned out from visually. I was hoping it would look totally stock in the car....and I think we came out close. In these two pictures the shifter is in 1st gear. It sits about 2 to 3" farther forward than the stock shifter. But man...the throws are SUPER short, super precise and with the way the shifter is designed, I can't imagine EVER missing 3rd gear.
I cannot WAIT to get this thing on course in a few weeks.