4 Spd Jerico w/ '99 Motor - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-12-2013, 07:38 PM   #41
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It just keeps all the angles in check
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Old 11-04-2013, 12:40 PM   #42
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Well, I know it's been a while, but I figured I would share some pictures with you guys. I'm still waiting on some parts for the install. I almost feel bad putting the tranny under the car where no one will see it, because it looks really nice on my shop floor. I'm just hoping after the install, it' won't have anymore time on my shop floor!
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4 Spd Jerico w/ '99 Motor-jerico.jpg   4 Spd Jerico w/ '99 Motor-jerico.2.jpg   4 Spd Jerico w/ '99 Motor-jerico.3.jpg  
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Old 11-04-2013, 12:50 PM   #43
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sick. Keep posting pictures. Please.

What ratios did you go with?
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Old 11-04-2013, 12:54 PM   #44
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Damn those things are pretty. It looks so tiny and you would think it would only weigh about 50 pounds. But those gears are heavy duty.
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Old 11-04-2013, 01:21 PM   #45
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I bet it is strong and light. A buddy of mine is running a Jerico competitor with a fairly tall rear gear and a tall first gear. He coasts through the pits pretty quickly at idle and uses a winch to load the car on the trailer, but first gear is a very usable gear on the track for him (turn 7 at Road Atlanta) and he can still reach 160+ in top gear regularly on the back straight. It's a SBC engine though.
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Old 11-04-2013, 03:20 PM   #46
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Well my gear ratios are really strange and prob useless for you since it's an autocross only car.

I'll work on posting pics as the progress continues.
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Old 11-04-2013, 03:23 PM   #47
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Quote:
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Well my gear ratios are really strange and prob useless for you since it's an autocross only car.

I'll work on posting pics as the progress continues.
No it is pretty applicable. Andrew seems adamant that it wont work for the track snobs so this is pretty much an auto-x only tranny choice on this site. The 3.63 rear gear would make 4th almost like a 1.6's 5th, and you can work back from there on the ratios. And run the car in 2nd at auto-x.
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Old 11-04-2013, 04:33 PM   #48
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Yeah, the track snobs can either change their diff to run around the 1:1 4th gear. or run ALLOFIT with a gearvendors overdrive. Cause if you're spending a few grand, why not spend a few grand more. 8 gears should make them happy. There's an incredible amount of ratios looking at Jerico's 4speed gear ratio chart.
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Old 11-04-2013, 04:38 PM   #49
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Yeah, the track snobs can either change their diff to run around the 1:1 4th gear. or run ALLOFIT with a gearvendors overdrive. Cause if you're spending a few grand, why not spend a few grand more. 8 gears should make them happy. There's an incredible amount of ratios looking at Jerico's 4speed gear ratio chart.
Another option would be to run a 7.7:1 rear gear (speedway quick change) and make 4th (1:1) as the first gear and install the rest of the gears on the opposite shaft as intended. You could re-jigger that shift linkage to even make the gears in the right spots.

The overdrive is interesting. Is it also side shifted so possible to build an insane shifter that automatically shifts it as you move and moves back to 1st gear. (yay for complex as **** linkages).
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Old 11-04-2013, 06:03 PM   #50
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umm... yeah my gearing isn't convential lol. There is a HUGE rpm drop from 3rd to 4th in my box.

You can make this box work on the track of course, but a five speed would be better for the track.
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Old 11-05-2013, 10:48 AM   #51
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Quote:
Originally Posted by TurboTim View Post
Yeah, the track snobs can either change their diff to run around the 1:1 4th gear. or run ALLOFIT with a gearvendors overdrive. Cause if you're spending a few grand, why not spend a few grand more. 8 gears should make them happy. There's an incredible amount of ratios looking at Jerico's 4speed gear ratio chart.
Hey I actually looked at these overdrives. Its a planetary gear set so I'm assuming that shifting into it you're just applying a brake to the planetary gear or releasing the brake. Which would be why no lift and no clutch is required. And yeah it give you a gear between every gear. Not sure if the road course guys are going to have to remember to pull a lever/push a button to get another gear though. Also not sure how heavy they are.
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Old 11-10-2013, 01:20 PM   #52
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Any more info on this Raucky
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Old 11-11-2013, 07:53 PM   #53
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Nope not yet....I'm stilll waiting on some parts to be made, but I'm hoping to have everything in a wk or two.
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Old 04-29-2014, 03:38 PM   #54
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You get that thing in there yet or what
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Old 10-16-2014, 10:33 AM   #55
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Ok so after an extremely long pause on building my car. I've got the ball rolling again and here are some pictures guys.
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4 Spd Jerico w/ '99 Motor-img_1968.jpg   4 Spd Jerico w/ '99 Motor-img_1967.jpg   4 Spd Jerico w/ '99 Motor-img_1966.jpg  
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Old 10-16-2014, 10:36 AM   #56
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Damn this is the first time I've seen actual pictures of this bell housing. They aint ******* around with making it explosion proof. That plate that replaces the "gasket" is thick as ****.
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Old 10-16-2014, 11:18 AM   #57
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Sexxxyyy! If I end up with all of the horsepower one day and nobody has come up with a good five speed solution then I may be following you right down this path.
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Old 10-16-2014, 12:22 PM   #58
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Christ almighty, what does that thing weigh? Just the bellhousing itself
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Old 10-16-2014, 12:59 PM   #59
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godddamnnn on that bellhousing, ****. Very nice.
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Old 10-16-2014, 01:12 PM   #60
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Yeah I don't think I'll have to worry about it breaking huh?

The weight of the stock 5spd compared to the "complete" Jerico/Bell Housing is basically the same.
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