3.80 final drive

Old 06-12-2014, 03:27 PM
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Originally Posted by FamilyGuy
What do we need if doing this for the speedo to stay accurate?
Probably a box from dakota digital or something. These things have electronic speed sensors dont they?
Old 06-12-2014, 03:44 PM
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Originally Posted by simione
Not quite certain what fd is used, but the ring gear is drilled , and the pinion and the other smaller gear (tranny oil pump drive gear I think) All came in sealed honda packaging with the part number stickers taken off of them. Pretty sure all 3 parts came from the same vehicle.
Very interesting. I wonder if this is a 3.94:1 from a 2014 automatic and they are just calling it 3.80 to obscure it is an OEM part?

I didn't realize it but the 2014 Accord V6 coupe has a 3.55 gear ratio. I think the 3.55 if usable would be even better, but probably not enough of a difference to justify.

Last edited by screaminz28; 06-12-2014 at 03:48 PM. Reason: more info found
Old 06-12-2014, 04:56 PM
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Originally Posted by screaminz28
Very interesting. I wonder if this is a 3.94:1 from a 2014 automatic and they are just calling it 3.80 to obscure it is an OEM part?

I didn't realize it but the 2014 Accord V6 coupe has a 3.55 gear ratio. I think the 3.55 if usable would be even better, but probably not enough of a difference to justify.
I doubt either Sonnick or Simione counted the teeth, but that would tell the story. We can count the ones on the ring gear in the picture, but the pinion is wrapped up.
Old 06-13-2014, 12:22 AM
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Originally Posted by screaminz28
Very interesting. I wonder if this is a 3.94:1 from a 2014 automatic and they are just calling it 3.80 to obscure it is an OEM part?

I didn't realize it but the 2014 Accord V6 coupe has a 3.55 gear ratio. I think the 3.55 if usable would be even better, but probably not enough of a difference to justify.
The 3.55 is part of the reason the 8G is faster than the 7G out of the box. Obviously it makes more power, but the shorter gearing helps as well. I think the 3.80s will help even more
Old 06-13-2014, 10:31 AM
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Just out of curiosity has anyone calculated what diameter wheel would also provide a 3.80 final drive?
Old 06-13-2014, 11:09 AM
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Originally Posted by pohljm
Just out of curiosity has anyone calculated what diameter wheel would also provide a 3.80 final drive?
The wheel/tire combo would be too small to run. It would probably entail something ridiculous like a 21" tire.
Old 06-13-2014, 10:41 PM
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Yugo wheels. 155/70R13 = 21.5!
Old 06-15-2014, 11:39 PM
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Sonnick or Simione updates? Also what tire sizes are you two running currently?
Old 06-15-2014, 11:49 PM
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Originally Posted by 6spd-GERCO
Sonnick or Simione updates? Also what tire sizes are you two running currently?
I dropped my car off Thursday. I told my mechanic to take his time, as my accord is not my daily driver. I might have it back by Tuesday.
Currently, I am rolling on 18 inch oz superleggeras with 225/40/18 tires
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Old 06-16-2014, 08:04 AM
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I'm just waiting for the Clutch/Flywheel. I'm running 215/55/17s.
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Old 06-16-2014, 11:57 AM
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Why so narrow?

I am running 225 50 17 and the 50 profile rubs. 1 finger gap all around.
Old 06-16-2014, 12:05 PM
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Originally Posted by thisaznboi88
Why so narrow?

I am running 225 50 17 and the 50 profile rubs. 1 finger gap all around.
he is making up with it by running a taller tire.
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Old 06-16-2014, 12:12 PM
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Originally Posted by thisaznboi88
Why so narrow?

I am running 225 50 17 and the 50 profile rubs. 1 finger gap all around.
Originally Posted by Atlas.46
he is making up with it by running a taller tire.
I like the 55 sidewall for daily; the extra comfort is worth it. 225s looked meh on my stock wheels (6.5") and the 55 sidewall actually helps straight line traction as Atlas pointed out. Probably part of the reason I hook from a low roll.
Old 06-16-2014, 12:47 PM
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I agree with that. Diameter is usually better for straight line traction - acceleration and braking. Wider does not give as much as a longer contact patch for braking and accelerating. Cornering is a different story.

Even more important is the compound. I would take a 215 drag radial over a 315 regular summer tire any day. The nice thing about a sticky compound on a narrow tire is they don't stand out to others.

I run my stock 3.42s but I've had to tailor my tire height to my rpms going through the traps. Changing sidewall height is a great way of fine tuning your gear ratios. The 3.80 will put you in the ballpark and the tires do the rest.
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Old 06-16-2014, 02:49 PM
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Originally Posted by I hate cars
I agree with that. Diameter is usually better for straight line traction - acceleration and braking. Wider does not give as much as a longer contact patch for braking and accelerating. Cornering is a different story.

Even more important is the compound. I would take a 215 drag radial over a 315 regular summer tire any day. The nice thing about a sticky compound on a narrow tire is they don't stand out to others.

I run my stock 3.42s but I've had to tailor my tire height to my rpms going through the traps. Changing sidewall height is a great way of fine tuning your gear ratios. The 3.80 will put you in the ballpark and the tires do the rest.
The 3.80s are perfect, IMO because of just ^ that. They are much shorter than stock, and you can "tailor" them depending on the tire height. You want them a little longer? Ok, go with a larger tire, and vice versa.
Old 06-24-2014, 11:17 PM
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Updates??
Old 06-24-2014, 11:25 PM
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I am waiting to hear back from my installer on when he is able to do it.
Old 06-24-2014, 11:30 PM
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awesome! impatiently waiting for how this FD performs.
Old 06-25-2014, 12:13 AM
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Hopefully Simione gets his car back soon and we will see!
Old 06-27-2014, 02:16 PM
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Originally Posted by Sonnick
Hopefully Simione gets his car back soon and we will see!
not soon enough, as my installer had to go out of town and will not be back until after the 4th of july. I was able to snap some installed pics, though


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Old 06-27-2014, 04:10 PM
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a pic of the old stuff
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Old 06-27-2014, 08:15 PM
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Oh, and by the way, the 2010 TL sh-awd has a 3.842 fd
Old 06-27-2014, 09:36 PM
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Nice pics! I'm starting to wonder if there's an OEM set of gears that'll work for us. I'd even consider going into the low 4's.
Old 07-01-2014, 08:54 AM
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Dropped my car off last night. Should be picking it up tomorrow.
Old 07-01-2014, 10:51 AM
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Old 07-01-2014, 05:03 PM
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waits for Sonnick to run 12s before I do.
Old 07-01-2014, 05:45 PM
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Too bad you're picking it up in the middle of this heatwave, Sonnick. Should keep you from beating on it too badly before the clutch is broken in though!
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Old 07-01-2014, 06:28 PM
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Originally Posted by anx1300c
Too bad you're picking it up in the middle of this heatwave, Sonnick. Should keep you from beating on it too badly before the clutch is broken in though!
I am going to break it in properly. Not going to be easy though, especially considering the length of time I've been without 2nd gear. I will not shift hard for awhile. I most likely won't even punch it for 400-500 miles.
Old 07-01-2014, 07:16 PM
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Originally Posted by Sonnick
I am going to break it in properly. Not going to be easy though, especially considering the length of time I've been without 2nd gear. I will not shift hard for awhile. I most likely won't even punch it for 400-500 miles.
So it should be broken in before Honda Day Englishtown I want to see you racing with/against me in ET Bracket 1 13.99 and faster.
Old 07-02-2014, 06:51 AM
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Respectable call-out!
Old 07-02-2014, 09:27 AM
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Originally Posted by Atlas.46
So it should be broken in before Honda Day Englishtown I want to see you racing with/against me in ET Bracket 1 13.99 and faster.
I'm almost positive I will NOT be retuned by then and I usually don't like racing when it's 90 degrees. Does nothing but disappoint. I will consider it though.
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Old 07-02-2014, 09:34 AM
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i've never wanted fall/autumn to come quicker, and it aint even my car.
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Old 07-02-2014, 11:03 AM
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Originally Posted by Sonnick
I'm almost positive I will NOT be retuned by then and I usually don't like racing when it's 90 degrees. Does nothing but disappoint. I will consider it though.
yeah... i dont think this weather is going anywhere

In hoping to have taller tires by then.
Old 07-02-2014, 11:15 AM
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Originally Posted by Atlas.46
yeah... i dont think this weather is going anywhere

In hoping to have taller tires by then.
If not @ Honda Day, we will make a date to meet either at Island or Atco in the Fall. I should be all set by then in terms of cutout/tune/DRs.
Old 07-02-2014, 05:43 PM
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Got it back!!! Details later!
Old 07-02-2014, 08:50 PM
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The most TORRENTIAL rain/lightning storm I've ever experienced just passed and HOLY SH!T it was nuts. If it weren't for that & me currently drinking a beer (perhaps 2), I'd make a video lol. Tomorrow night I will.

So the car feels great. The trans feels much more solid than the old one did. That's the best word to describe it. Each upshift is more solid than before without a doubt. The clutch is actually lighter than stock lol. Not sure how crazy I am about that, but I'm sure I will get used to it and it will become a non issue.

The combination of the LW Fly & FD is easily discernible. The car feels about 400lbs lighter and revs effortlessly. The shorter gearing is obvious, too. The speedo is off, but the RPMs don't lie. In 6th gear @ 1500 RPM it pulls. Obviously it doesn't PULL, but more than it ever has before at that engine speed. I can't WAIT until the clutch is broken in and I can actually hammer it. I will wait to reveal ALL of my thoughts once the clutch is broken in. Should take about a week.

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Old 07-02-2014, 09:11 PM
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Dude, have six beers. It's the eve of 4th of July eve and your car is finally back in top shape. Celebrate!
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Old 07-02-2014, 10:08 PM
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It's gonna be hard to not hammer on it when you are breaking in that clutch! Awesome man, can't wait to hear about and see some videos of the results!

Thanks Sonnick!
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Old 07-03-2014, 07:18 AM
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Extra TQ's in lower gear!
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Old 07-03-2014, 08:51 AM
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Originally Posted by 6spd-GERCO
It's gonna be hard to not hammer on it when you are breaking in that clutch! Awesome man, can't wait to hear about and see some videos of the results!

Thanks Sonnick!
Isn't it better for clutch break in to hammer it in a lower numerical gear than to lug it and try to accelerate in a higher gear?

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