now i know when you clicked on this topic you were thinking, "what a moron! the A is 6spd!" but, i already know that. what i am currently pondering is which tranny would be better to use on the k20a. i am considering swapping this motor into my '03 ep3. i want to know which tranny would ultimately make the car faster. not top speed, but acceleration. and if i do the a3 tranny i would eventually do the LSD in it. if anyone can help me out with this... much thanks.

 

The 6-spd transmission definitely has closer ratio gearing than the 5-spd transmission, thus you will accelerate faster.

 

i woud go with the 5spd. i heard that the gears are closely matched and its more durable than the 6spd.

 

i am thinking about the five speed just cuz of higher speeds in the same gears (except 6th obviously). my only problem with the 5spd is that i have the grinding problem i'm sure almost everyone else here has. but i used to have an SVT focus with the 6spd and i loved the 6th gear. i'm kind of torn between these two.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by maxxjq &raquo;</TD></TR><TR><TD CLASS="quote">i am thinking about the five speed just cuz of higher speeds in the same gears (except 6th obviously). my only problem with the 5spd is that i have the grinding problem i'm sure almost everyone else here has. but i used to have an SVT focus with the 6spd and i loved the 6th gear. i'm kind of torn between these two. </TD></TR></TABLE>

are you staying N/A? if so i would use the 6spd but if your going F/I then maybe the 5spd since it has longer gearing which is better for boost. still you may just want to stick with the 6spd since the k20a's ive heard is built very well and worlds better than the 6spd that comes with the k20a2.

 

Okay....

The 5-spd and 6-spd have the SAME top gear ratios. If you use a tranny from the 05-06 Type-S, your motor will not turn any slower in 6th gear as it does now on your stock 5th gear because both final drives are the same 4.7 ratio.

To me, high redline + high-rpm-only powerband = 6-speed tranny. You'll have the extra revs, so you can afford to spend more time in any gear. Plus, the close ratios help keep the engine in high rpms and on the high-lift cam lobes.

You could spend more time in each gear between shifts with your 5-speed, but each shift will drop the motor lower in the powerband.

Keep the 5-speed only if you're going to also keep the A3 motor OR swap in a K24 of some kind. The lower revs need slightly longer gearing or else you'll have to upshift way too early to be effective (for example, unlike your current 2-3 upshift occurring at about 58 mph, it could be under 50).

Each transmission is already perfectly matched to each engine, IMO. High revs? Get the 6-speed.

The JDM DC5-R tranny is geared even shorter than our US-spec Type-S transmission.

 

to sleepin, yes i am planning on keeping it NA. i want to get at least 350 out of it. that should make it pretty fun to drive.

to Barracks, i have talked to the owner of the shop that is going to help with the swap and he offered me a deal of lower price with helping me if he gets to keep the A3. so i guess my mind is made up now. i'll be using the 6spd. i completely spaced the fact that the motor will drop out of its powerband with longer gears.

thanks much to all of you that decided to give some input. -maxx

 

Dude, you're gonna have a lot of fun once it's finished.

BTW -- is this the honest-to-goodness JDM K20A?

 

The 5 spd tends to drop the revs too much thus putting you out of vtec and having to wait for the revs to build again, whereas the 6 spd is geared to keep it in vtec once your there. I hope that makes sence to you.

 

so why are you getting a k20a again?

 

i'm gonna do the k20a cuz i want the higher revs of 8400 rpms. rather than the pitiful 6800 rpms the k20a3 has. 220hp&gt;160hp 152tq&gt;132tq 8400rpm&gt;6800rpm
i've thought of building the a3, but from what i've read the crank is only good for about 7200rpms. and since it's a honda i have to have vtec. nothing compares to that sweet sweet sound. and with a little work, the vtec crossover should be quite noticable. i know it's i-vtec, but it still has vtec.

 

jdm owns the honda world. so of course it is.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by maxxjq &raquo;</TD></TR><TR><TD CLASS="quote">to sleepin, yes i am planning on keeping it NA. i want to get at least 350 out of it. that should make it pretty fun to drive.

to Barracks, i have talked to the owner of the shop that is going to help with the swap and he offered me a deal of lower price with helping me if he gets to keep the A3. so i guess my mind is made up now. i'll be using the 6spd. i completely spaced the fact that the motor will drop out of its powerband with longer gears.

thanks much to all of you that decided to give some input. -maxx </TD></TR></TABLE>

350hp NA??? are you sure?

 

Guess you've got a lot of money to throw at it if you want it to reach 350 NA. What'll you have to rev it to, 10-11,000 or so?

 

ok ok so i've consulted some people... i'm gonna change my power number from 350whp to 350hp at the flywheel. or somewhere close. apparently it would be pretty damn hard to get 350whp. harder than i thought. and i will have enough money to cover this all. no worries about that.

in regards to how high it will rev, i don't care how high it revs just as long as i come close to or meet my goal. although 11k rpm would be extremely nice...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by maxxjq &raquo;</TD></TR><TR><TD CLASS="quote">ok ok so i've consulted some people... i'm gonna change my power number from 350whp to 350hp at the flywheel. or somewhere close. apparently it would be pretty damn hard to get 350whp. harder than i thought. and i will have enough money to cover this all. no worries about that.

in regards to how high it will rev, i don't care how high it revs just as long as i come close to or meet my goal. although 11k rpm would be extremely nice...</TD></TR></TABLE>

So your still looking at like 320whp. I still think that is a far stretch for this car N/A.

 

well i'm willing to try. it'd still be fun.

 

Not saying it won't be fun....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BarracksSi &raquo;</TD></TR><TR><TD CLASS="quote">Not saying it won't be fun.... </TD></TR></TABLE>

Exactly it'll be fun as long as you have money, the second you have no money is the time it becomes un-fun.

 

that's very true.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cnyej1 &raquo;</TD></TR><TR><TD CLASS="quote">

Exactly it'll be fun as long as you have money, the second you have no money is the time it becomes un-fun.</TD></TR></TABLE>

And who says money doesnt buy you happieness

 

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

And who says money doesnt buy you happieness</TD></TR></TABLE>
Rich people and poor people.