Gearbox options/experiences
03-12-2014, 04:09 PM
#181
PAR has a bog box conversion for the AZ6. Personally, if I'm spending $4-7k for a race transmission, it won't have synchros.
Further, BAR's (Ron Olsen) AZ6 sequential is probably another year and a half away and will be optimized for EP power. F/I not welcome. While a full sequential is sexy, a good dog box will shift just as fast, only limited by the movement of the H pattern shifter. For now, the PAR AZ6 dog conversion with about a 2.8 1st and maybe .87 6th would be nice.
Further, BAR's (Ron Olsen) AZ6 sequential is probably another year and a half away and will be optimized for EP power. F/I not welcome. While a full sequential is sexy, a good dog box will shift just as fast, only limited by the movement of the H pattern shifter. For now, the PAR AZ6 dog conversion with about a 2.8 1st and maybe .87 6th would be nice.
On a serious note, would specifying one with dogs that give a "wide window of oportunity" for streetability make them suck for flatout application?
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03-12-2014, 06:27 PM
#184
what about a gear for getting off the line? ~2.5?
i'm thinking 5 speed at the moment as is the builder to give more room for bigger/stronger gears.
What about a 5 speed box in a 6 speed housing? you think the stronger case would be worth it? the 5 speed has a better shift.
i'm thinking 5 speed at the moment as is the builder to give more room for bigger/stronger gears.
What about a 5 speed box in a 6 speed housing? you think the stronger case would be worth it? the 5 speed has a better shift.
Last edited by mr2daj; 03-12-2014 at 06:46 PM.
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03-12-2014, 07:40 PM
#185
i dont understand why you would bother with custom gears in a stock case at this level. buy a racing tranny and adapt it, Quick time has all the info they need as the already offer a bell housing for a 4bolt muncie,t10 pattern to a BP. They should be able to make you a housing to fitt and gearbox pattern you want.
Gforce allows you to specify ratios and output shafts, why not go with a dog box thats been engineered as a unit and not some gears in a old case. The cost should be about the same.
Gforce allows you to specify ratios and output shafts, why not go with a dog box thats been engineered as a unit and not some gears in a old case. The cost should be about the same.
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03-12-2014, 08:53 PM
#187
Elite Member
Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,478
Total Cats: 144
2.987
1.989
1.537
1.218
1
.862
HPI 6-Speed Cross Transmission S13 S14 S15 Silvia 180SX - RHDJapan
lists confirmed torque compatability 362 ft-lbs
confirmed power compatability 424 Hp
Wish they made that in a direct miata fit.
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03-12-2014, 10:12 PM
#188
Awful close to a Nismo AZ6
2.987
1.989
1.537
1.218
1
.862
HPI 6-Speed Cross Transmission S13 S14 S15 Silvia 180SX - RHDJapan
lists confirmed torque compatability 362 ft-lbs
confirmed power compatability 424 Hp
Wish they made that in a direct miata fit.
2.987
1.989
1.537
1.218
1
.862
HPI 6-Speed Cross Transmission S13 S14 S15 Silvia 180SX - RHDJapan
lists confirmed torque compatability 362 ft-lbs
confirmed power compatability 424 Hp
Wish they made that in a direct miata fit.
__________________
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03-12-2014, 10:15 PM
#189
No, more specifically if we're talking about total custom... I am talking about this:
Originally Posted by importtuner
The number of dogs (teeth) and the size of the openings determine the window of opportunity that the dogs have to engage during the shift event. Rings with a smaller number of teeth provide a more efficient, smoother shift quality. The downsides to this easier engagement are increased noise and abruptness on the shift.
I would guess that noise and abruptness of shift matter little to none - just curious if there was any other insight on this part.
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03-13-2014, 11:04 PM
#192
The sound too...mmm mmm mmm.
Actually isn't the 6speed equipped with a straight cut reverse? I buddy with the S2K says his is.
He's putting 400hp/290ft/lbs down. He's been told not to do long pulls in 5/6th as it'll put to much load.
Seemed correct when I think about it.
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03-14-2014, 04:46 PM
#194
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Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,478
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True, personally I find no down side to dogbox gears. I'd love to have them.
The sound too...mmm mmm mmm.
Actually isn't the 6speed equipped with a straight cut reverse? I buddy with the S2K says his is.
He's putting 400hp/290ft/lbs down. He's been told not to do long pulls in 5/6th as it'll put to much load.
Seemed correct when I think about it.
The sound too...mmm mmm mmm.
Actually isn't the 6speed equipped with a straight cut reverse? I buddy with the S2K says his is.
He's putting 400hp/290ft/lbs down. He's been told not to do long pulls in 5/6th as it'll put to much load.
Seemed correct when I think about it.
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