I remember at one point, I think on the Miata.net board, that someone did do a swap for LSD. I remember them saying that there are special tools needed to work in the diff and so it would be better unless you have really good experience to just swap out a complete diff, which is not an easy thing to do. I think maybe Goodwin racing might be able to shed some light on this?
Use a VIN to pull up the car-- i grabbed a random Abarth VIN from Autotrader. For convenience, here's the one I used: JC1NFAEK4H0116928
Next, change the dropdown menu on the left from "parts" to "accessories".
Looks like the Abarth differential (68329082AA ?) costs approx. $750. Is that all that is required for the conversion? Am I looking at this right? Would love to get your thoughts on this.
Use a VIN to pull up the car-- i grabbed a random Abarth VIN from Autotrader. For convenience, here's the one I used: JC1NFAEK4H0116928
Next, change the dropdown menu on the left from "parts" to "accessories".
Looks like the Abarth differential (68329082AA ?) costs approx. $750. Is that all that is required for the conversion? Am I looking at this right? Would love to get your thoughts on this.
The website would not accept the VIN you posted when just visited.
It's probably the GKN LSD found in the MX-5; and it's quite likely some shims will be needed to bring the ring and pinion gears back into proper mesh.
The website would not accept the VIN you posted when just visited.
It's probably the GKN LSD found in the MX-5; and it's quite likely some shims will be needed to bring the ring and pinion gears back into proper mesh.
Use a VIN to pull up the car-- i grabbed a random Abarth VIN from Autotrader. For convenience, here's the one I used: JC1NFAEK4H0116928
Next, change the dropdown menu on the left from "parts" to "accessories".
Looks like the Abarth differential (68329082AA ?) costs approx. $750. Is that all that is required for the conversion? Am I looking at this right? Would love to get your thoughts on this.
I was able to pull up that car, but was unable to find a differential, or major parts for an LSD for $750. They list parts for over $2000 that aren't even LSDs. The part number you have is for a half shaft.
The website would not accept the VIN you posted when just visited.
It's probably the GKN LSD found in the MX-5; and it's quite likely some shims will be needed to bring the ring and pinion gears back into proper mesh.
The differential doesn't factor into the final drive ratio. Unless you are mistakenly referring to the final drive assembly as the differential.
Furthermore, a final drive assembly will cost much, much more than $750. The MX-5 final drive w/LSD is around $2000.
We used the Miata rear housing with stock Miata limited slip because it was the only way at the time to get limited slip in the Fiat and lack of limited slip was holding back performance at Autocross events.
Yes, that meant the much taller Miata 2.9 FDR. Now our Fiat does about 67mph in 2nd gear, top gear and 2500 rpms is 75mph (gas mileage on long freeway drives is improved).
Our rear housing went to our friends at OS GIKEN for development of limited slip that fits the Fiat stock housing and FDR, hope to have those by Spring.
In the meantime, with big help from that Miata 2.9 rear with limited slip our Fiat took it's first Top Time of Day at BMW CLUB autocross in December. It beat every BMW, Porsche, Corvette, Miata, etc.
In addition to limited slip, that result took some other supporting bits including our light brake caliper conversions, light battery, and particularly these essentials:
In the meantime, with big help from that Miata 2.9 rear with limited slip our Fiat took it's first Top Time of Day at BMW CLUB autocross in December. It beat every BMW, Porsche, Corvette, Miata, etc.
I'd expect that the 2.9:1 rear end would work nicely, especially on a tuned car that has the torque to pull it at highway speeds without issue.
Once thing I liked about the S2000 (AP1) was that top of 2nd was around 104-106 km/h if you pushed it deep into the rev limiter. Rarely ever needed to shift to third in parking lot autocross events. Friends in early Miatas ended up shifting much more.
Complete ND housing with limited slip can be used as we noted above but indeed ND limited slip internals need too much shim to fit the 3.4 FDR in the Fiat rear housing because they are made for the 2.9 in the Miata.. But in the coming months we expect both our OsGIKEN solution and Cusco for the Fiat housing with 3.4.
Anyone had to replace an axle yet? I have a very small popping sound when reversing up hill and on initial acceleration. I am thinking it could be one of my axles on its way out. All the boots look good and nothing seems out of place. Car is just under 50k
Last night, towards end of short, somewhat spirited drive the CEL came on. ODB2 and Torque Light app showed P2173 (high airflow detected, due to vacuum leak or faulty sensor from what I read). Anybody else encountered this? Car has been trouble free, no recent changes/mods, running EC v4...
Has anybody attempted this mod for normal LED replacement turn signals on the 124? Is it the same module layout?
https://mx5things.com/2018/04/01/tear-down-bcm-fixing-hyper-flashing-with-leds/
I currently have resistors (had to add at each location) but seems messy. I’m not a fan of the LEDs...
Catch Can $$$
Been looking at these. So far I am looking at this.
without the breather. What is the difference between a $200 catch can and the one listed on eBay, (not sure I would use their hoses). how much $$$ should an aluminum catch can assembly be...
So at the risk of sounding like a rookie here; I have had several performance oriented vehicles in the past. Both N/A and boosted and enjoyed each in there own way. However my 17' Abarth is the first one with a "Sport Mode" selector switch. And after seeing the single paragraph in the owners...
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