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How Honda gets those transmissions so LIGHTWEIGHT!!!

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Old 07-24-2007, 07:44 AM
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Default How Honda gets those transmissions so LIGHTWEIGHT!!!

Hey guys...I have been asked the question of: "How can I lighten my internal transmission parts," on a weekly basis for the past couple of years. Well the answer is finally here...well not quite. Most of you never get to see the insides and innerworkings of a manual transmission. Nothing to crazy but, when it comes to weight savings...Honda has it down. We had the pleasure of rebuilding an Insight transmission for a local dealership recently and I thought I would share the little tricks that Honda has for lightening this transmission.

Ring Gear

Countershaft opened up

Selector Hub

Lightened Gear

Forks that have been hallowed out

Reverse idler gear and shaft

Drain and fill bolts...NO they are not missing the magnets
Old 07-24-2007, 08:39 AM
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wow, thats a lot of boring/drilling.
Old 07-24-2007, 09:52 AM
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Default Re: (gsrious)

Interesting
Old 07-24-2007, 09:57 AM
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Default Re: (5_Lug_B)

How does this effect the reliability?
Old 07-24-2007, 11:19 AM
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Default Re: (biotech0123)

Well considering it is in a stock Insight with no power...I don't see any real problems. This one just had a noisy bearing and a few other small issues. Looks like Honda didn't see a problem with it
Old 07-24-2007, 11:21 AM
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they drilled holes in everthing they could think of
Old 07-24-2007, 11:42 AM
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Default Re: (4g hatch)

Interesting...
Old 07-24-2007, 03:41 PM
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cool! thanks for taking pics and posting them up!

any of the tranny rebuilders tried to do this to a b-series yet?
Old 07-24-2007, 07:37 PM
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Default Re: (full Circling)

Intriguing!

However I wondered how long it would before Honda started turning everything into Swiss cheese!

The only thing left to do now is to make the casting thinner thus reducing weight!
Old 07-24-2007, 08:55 PM
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Default Re: (richard7968)

looks like the 04-06 TL transmission gears in the MT. but the dam thing is still heavy to man handle it out of the car with 1 person.
Old 07-24-2007, 10:46 PM
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Default Re: (dtapia)

Pretty cool!
Old 07-25-2007, 05:44 AM
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Default Re: (2point2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2point2 &raquo;</TD></TR><TR><TD CLASS="quote">Pretty cool! </TD></TR></TABLE>

Old 07-25-2007, 07:17 AM
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Default Re: (Furyof4)

Just wanted to share some of the cool things that are done behind the scenes....This transmission was extremely light...We have a 2 man lift policy at the shop here...and it wasn't even necessary!

The new Accord V6 manual transmissions also have the same done to them...not as drastic but, it is still present on a few pieces.
Old 07-25-2007, 07:37 AM
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Default Re: (GearSpeedEF7)

WOW!!

I wonder if it's for general weight loss or in order to lower inertial mass.

Wes
Old 07-25-2007, 08:59 AM
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Default Re: (Wes V)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Wes V &raquo;</TD></TR><TR><TD CLASS="quote">WOW!!

I wonder if it's for general weight loss or in order to lower inertial mass.

Wes</TD></TR></TABLE>

I am thinking both...the way Honda does things sometimes
Old 07-25-2007, 08:27 PM
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Default Re: (GearSpeedEF7)

Question:

Are 'normal' counter/main shafts crispy on the outside and chewy on the inside from the factory anyway? Did honda just drill out the soft center? or are 'normal' shafts hardened eqaully throughout?
Old 07-30-2007, 07:20 PM
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Default Re: How Honda gets those transmissions so LIGHTWEIGHT!!! (GearSpeedEF7)

thanx for the post! that's freakin intense. now if only the b-series was set up this way
Old 07-31-2007, 12:52 AM
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with the reverse idler gear rarely used, waste of time to drill it.

oh but SCCA rules, I must dig thru
Old 07-31-2007, 04:52 AM
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Default Re: How Honda gets those transmissions so LIGHTWEIGHT!!! (GearSpeedEF7)

very interesting, thanks for the pics
Old 07-31-2007, 09:50 AM
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Wow. Thats pretty expensive from a manufacturing standpoint.

Cool stuff though.
Old 07-31-2007, 10:54 AM
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Default Re: (b18bEKcoupe)

That, my friend, is sexy.
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