Marlin Crawler VSS
04-25-13, 05:33 PM
#2
The Marlin Crawler VSS is only needed when using an mk3 supra R154 because the mk3 supra uses a mechanical sensor. That converts it into an electrical signal for the sc300.
You shouldn't need anything but the speed sensor from the manual trans as long as the w58 is from an mk4 supra or sc300. It should just plug right in.
You shouldn't need anything but the speed sensor from the manual trans as long as the w58 is from an mk4 supra or sc300. It should just plug right in.
04-26-13, 09:31 AM
#4
It will work and plug in the trans but your speedometer will be off. Even if you get the manual speed sensor your speedometer will still be off unless you get the correct 4.08 differential gears.
Difference between the auto and manual speed sensor is the plastic gear that goes inside the transmission.
They have different amount of teeth on them.
If you can't get the manual trans sensor the just buy this part (33403‑29325 List Price $25.69)
Swap the new gear on your auto speed sensor. Now find a 4.08 diff
Difference between the auto and manual speed sensor is the plastic gear that goes inside the transmission.
They have different amount of teeth on them.
If you can't get the manual trans sensor the just buy this part (33403‑29325 List Price $25.69)
Swap the new gear on your auto speed sensor. Now find a 4.08 diff
04-26-13, 03:08 PM
#6
Stock w58 comes with a 4.08 gears. Never driven one myself can't say whether it's too tall or not.
But if hihopes has a sc300 auto pretty sure those gears are 4.27 which makes the car more fun to drive but cruising rpms will suffer some for dd.
Either way will make the speedo work and the corrector route is probably cheaper, I never looked into pricing.
But if hihopes has a sc300 auto pretty sure those gears are 4.27 which makes the car more fun to drive but cruising rpms will suffer some for dd.
Either way will make the speedo work and the corrector route is probably cheaper, I never looked into pricing.
04-27-13, 11:26 AM
#7
Stock w58 comes with a 4.08 gears. Never driven one myself can't say whether it's too tall or not.
But if hihopes has a sc300 auto pretty sure those gears are 4.27 which makes the car more fun to drive but cruising rpms will suffer some for dd.
Either way will make the speedo work and the corrector route is probably cheaper, I never looked into pricing.
But if hihopes has a sc300 auto pretty sure those gears are 4.27 which makes the car more fun to drive but cruising rpms will suffer some for dd.
Either way will make the speedo work and the corrector route is probably cheaper, I never looked into pricing.
my stock sc400 has a 3.9 diff, and at 1:1 I sit at around 3.5k at 60
i just know most people use the 3.27 auto tt torsen diff and seem to like it for dd/highway use.
thats what ill eb using when i do my r154 swap.
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04-27-13, 12:14 PM
#8
It all comes down to what hihopes wants/needs from his car which is why we have the forums, to gain knowledge and help make a better decision.
Obviously the best way to figure out what he want is to actually drive it. Figure out the pros and cons to each option and make the best decision.
If all he wants is to fix the speedo being off, then by all means go for the corrector. It'll solve the problem and be cheapest.
Me personally, I would rather spend the time and money to put the diff I want in. (going 3.76 TT auto diff and R154)
Obviously the best way to figure out what he want is to actually drive it. Figure out the pros and cons to each option and make the best decision.
If all he wants is to fix the speedo being off, then by all means go for the corrector. It'll solve the problem and be cheapest.
Me personally, I would rather spend the time and money to put the diff I want in. (going 3.76 TT auto diff and R154)
04-27-13, 01:51 PM
#9
It all comes down to what hihopes wants/needs from his car which is why we have the forums, to gain knowledge and help make a better decision.
Obviously the best way to figure out what he want is to actually drive it. Figure out the pros and cons to each option and make the best decision.
If all he wants is to fix the speedo being off, then by all means go for the corrector. It'll solve the problem and be cheapest.
Me personally, I would rather spend the time and money to put the diff I want in. (going 3.76 TT auto diff and R154)
Obviously the best way to figure out what he want is to actually drive it. Figure out the pros and cons to each option and make the best decision.
If all he wants is to fix the speedo being off, then by all means go for the corrector. It'll solve the problem and be cheapest.
Me personally, I would rather spend the time and money to put the diff I want in. (going 3.76 TT auto diff and R154)
04-28-13, 10:33 PM
#13
To correct the speedometer inaccuracy you need to use a Yellr YellowBox V4. Yellr now makes a plug-n-play harness into the transmission speed sensor for SC/MKIV applications. It's very straightforward. Installation is covered on page 9 of a thread I made a thread about the overall gear ratio topic:
https://www.clublexus.com/forums/per...et-swap-9.html
As far as the 4.083 being your best option, it depends on what you want from the car. Personally I found my factory W58/4.083 to be a bit tame in NA form. I changed this to a 4.272 (SC300 auto ratio) when I swapped in my Torsen. It's a MUCH better ratio for an NA manual car and it also happens to be the factory ratio for 1993-1996 Supra MKIV NA 5-speeds. Every transmission gear seems better matched with the higher gearing. The best part is if you're doing a swap, you already have 4.272's as you know.
It's an aggressive drive but to each his own. Personally I prefer it.
People seem to complain a lot about the revs at highway speeds, which is funny. It's barely much difference: 4.083:1 gearing is roughly 2,800rpm in 5th gear at 70mph. That's STOCK. 4.272:1 gearing is roughly 3,000rpm in 5th gear at 70mph. 80mph is 3,500rpm. That's the same as a stock MKIV Supra NA 5-speed (W58/4.272:1). The bonus prize is that you get better passing power.
Now 4.083:1 is probably still the best gearing for an aggressively driven 1JZ-GTE/VVT-i/BPU car.
2JZ-GTE, NA-T and seriously built 1JZ cars are the ones that need less aggressive ratios.
https://www.clublexus.com/forums/per...et-swap-9.html
As far as the 4.083 being your best option, it depends on what you want from the car. Personally I found my factory W58/4.083 to be a bit tame in NA form. I changed this to a 4.272 (SC300 auto ratio) when I swapped in my Torsen. It's a MUCH better ratio for an NA manual car and it also happens to be the factory ratio for 1993-1996 Supra MKIV NA 5-speeds. Every transmission gear seems better matched with the higher gearing. The best part is if you're doing a swap, you already have 4.272's as you know.
It's an aggressive drive but to each his own. Personally I prefer it.
People seem to complain a lot about the revs at highway speeds, which is funny. It's barely much difference: 4.083:1 gearing is roughly 2,800rpm in 5th gear at 70mph. That's STOCK. 4.272:1 gearing is roughly 3,000rpm in 5th gear at 70mph. 80mph is 3,500rpm. That's the same as a stock MKIV Supra NA 5-speed (W58/4.272:1). The bonus prize is that you get better passing power.
Now 4.083:1 is probably still the best gearing for an aggressively driven 1JZ-GTE/VVT-i/BPU car.
2JZ-GTE, NA-T and seriously built 1JZ cars are the ones that need less aggressive ratios.
Last edited by KahnBB6; 04-28-13 at 10:37 PM.
11-10-15, 07:55 AM
#15
So the VSS is only necessary when swapping an old W58 (mk3) or R154 into the SC?
I have a 97 300 auto and I don't plan on changing the diff so I'm going to need a corrector regardless. Is that right?
I have a 97 300 auto and I don't plan on changing the diff so I'm going to need a corrector regardless. Is that right?