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Discussion Starter · #1 · (Edited)
Ok its late and I'm real tired but ive been looking over the gear ratios in the different trannys and from what it looks like the J2 Elantra has the longest gears.

Now I have an LC2 Accent. I want to keep the Alpha motor and swap in a new tranny (for the larger gears). I want all your opinions on which tranny to use as well as which trannies would swap. thanks.

My main goal is to be able to cruise on freeway (65-70 mph) at 2,500 rpm instead of the lousy 3k rpm that I have with the alpha tranny. I dont care about going 140 mph or whatever else i just want to have a normal cruise spped at a lower rpm and I figure d having longer gears (3rd-5th) could give me that.
 

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Discussion Starter · #4 ·
Or get a new FGR kit from Kspec and keep your tranny.
They dont make them longer..they make them shorter. Also too they only make them for the 2.0.

Back to what Wilbur was saying. Would I be able to fit in the tranny from a 99-00 Elantra? Remember I have an 04 Accent.
 

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I think the XD trans would be the best idea, IMO. The sub frame is very similar (I believe the j2 was still using a crossmember) . The mounts need a little modding, but nothing a good grinder/drill can't handle. Also I have heard the XD/GK syncros are a little better. In my area they are running about 250.

That or you could get rims/tires with a bigger overall diameter. Speedo might not be right. :D
 

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Discussion Starter · #6 · (Edited)
so you think I should use a tranny off an 02-04 Elantra?

M5AF3 1.5L(A) 1st:3.462 2nd:2.053 3rd:1.370 4th:1.031 5th:0.838 R:3.250 FGR:3.942
M5AF3 1.5L(L) 1st:3.615 2nd:2.053 3rd:1.370 4th:0.971 5th:0.825 R:3.250 FGR:3.650
M5AF3 1.6L(L) 1st:3.615 2nd:2.053 3rd:1.370 4th:1.031 5th:0.825 R:3.250 FGR:3.842
M5BF1 1.6L(J) 1st:3.083 2nd:1.947 3rd:1.285 4th:0.935 5th:0.756 R:3.083 FGR:4.592
M5BF1 1.8L(J) 1st:3.462 2nd:1.950 3rd:1.393 4th:1.061 5th:0.878 R:3.250 FGR:3.650
M5BF1 1.8L(R) 1st:3.462 2nd:1.950 3rd:1.393 4th:1.061 5th:0.878 R:3.250 FGR:3.650
M5BF1 2.0L(R) 1st:3.462 2nd:1.950 3rd:1.393 4th:1.031 5th:0.825 R:3.250 FGR:3.650
M5BF1 2.0L(J) 1st:3.462 2nd:1.950 3rd:1.393 4th:1.061 5th:0.878 R:3.250 FGR:3.650
M5BF2 2.0L(G) 1st:3.462 2nd:2.053 3rd:1.393 4th:1.061 5th:0.837 R:3.250 FGR:4.056
M5BF2 2.0L(D) 1st:3.615 2nd:2.053 3rd:1.393 4th:1.061 5th:0.837 R:3.250 FGR:3.650

M5GF1 2.7L(T) 1st:3.231 2nd:1.952 3rd:1.296 4th:0.943 5th:0.775 R:3.455 FGR:4.063
MFA60 2.0L(K) 1st:3.153 2nd:1.944 3rd:1.333 4th:1.055 5th:0.857 6th:0.704 R:3.005 FGR:4.678
MFA60 2.7L(G) 1st:3.153 2nd:1.944 3rd:1.333 4th:1.055 5th:0.857 6th:0.704 R:3.005 FGR:4.428

A:X3 Accent L:LC/LC2 Accent J:J2 Elantra D:XD Elantra R:RD2 Tiburon G:GK Tiburon K:Korean Tiburon

Now Ive highlighted in bold both the GK Tib and XD Elantra gear ratios. both are the same but the thing I'm confused over is what do the numbers mean? Is the larger number a shorter or longer gear?

Example: the GK 5th gear is: 0.837 and the LC2 is: 0.825 now obviousely I'm going to assume the GKhas the longer 5th BUT the 1st gear is: 3.462 and the LC2 is: 3.615 is that telling me that the GK 1st gear is SHORTER? I dont want a shorter first gear... I want ALL my gears longer.
 

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smaller number is a longer gear or a "higher" one.

Yes, LCs are geared really low and they hafta shift sooner.

Think of it this way: If I tib puts out more power than an accent, they would gear it higher to prevent loss of traction on start AND accents would need a bigger multiplier to get going since they make less power.
 

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Discussion Starter · #9 ·
The big diffrence between the GK and the XD is the final gear. That 3.65 vs. 4.056 is what is going to bring the rpm down for you on the highway.
Ok cool, so what years are XDs again? 2003-4?
 

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The following math is based off your tires being the stock overall diameter

Stock Trans MPH @ 4000rpm = 82.0mph
XD Trans MPH @ 4000rpm = 85.1mph

Is that enough to be worth the swap? Well that and the beta trans is stronger. Ask ryan about that one, lol
 

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Discussion Starter · #12 ·
The following math is based off your tires being the stock overall diameter

Stock Trans MPH @ 4000rpm = 82.0mph
XD Trans MPH @ 4000rpm = 85.1mph

Is that enough to be worth the swap? Well that and the beta trans is stronger. Ask ryan about that one, lol
yeah see I have 16" rims. Well seeing as I do plan to go to at least 180 whp a stronger tranny would be good. better than blowing it mid way through a run.
 
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