Gearbox Gearbox & Clutch Discussion

[jeroenvde]

I have looked at Hyundai Mobis, Dymos and Wia websites and it does appear to be a brand new gearbox (the first from Hyundai with 2 separate final drives I think), just filled whatever is available in their parts bin. The casing is probably the T044S6/M6LF1 with a higher rating of 431nm/318 lbft but ratios are all different. I would have thought it was an overkill at stock power levels since it weighs 140 lbs but it is quite likely given the i30n is not a light car.

Transaxle type M6GF2

1st
3.083 N
3.083 N PERFORMANCE

2nd
1.931 N
1.931 N PERFORMANCE

3rd
1.696 N
1.696 N PERFORMANCE

4th
1.276 N
1.276 N PERFORMANCE

5th
1.027 N
1.027 N PERFORMANCE

6th
0.854 N
0.854 N PERFORMANCE

Reverse
3.588 N
3.588 N PERFORMANCE

1st(1,2,R) / 2nd(3,4,5,6)
4.154 / 3.176 N
4.333 / 3.250 N PERFORMANCE

So the final drives are different between N and performance N.
I wonder how it looks like inside with 2 final drives

 

[koevasi]

I have said it before but I will say it again " I love this forum !" No way you can find the info members like koevasi has posted for us from a dealership. You could surf all day on the internet and not find this stuff. Big thanks koevasi

Thank you but I think I got it all wrong lol

 

[Stash-N]

 

[koevasi]

Transaxle type M6GF2

1st
3.083 N
3.083 N PERFORMANCE

2nd
1.931 N
1.931 N PERFORMANCE

3rd
1.696 N
1.696 N PERFORMANCE

4th
1.276 N
1.276 N PERFORMANCE

5th
1.027 N
1.027 N PERFORMANCE

6th
0.854 N
0.854 N PERFORMANCE

Reverse
3.588 N
3.588 N PERFORMANCE

1st(1,2,R) / 2nd(3,4,5,6)
4.154 / 3.176 N
4.333 / 3.250 N PERFORMANCE

So the final drives are different between N and performance N.
I wonder how it looks like inside with 2 final drives

So I looked that one up - M6GF2 is a transmission used in everything from 2.4 Sonata to 2.0 diesel Tucson models, all using different ratios. It was originally designed back in the 90s primarily to handle the extra torque generated by the company's then new family of turbo diesel engines. Each of the gears is way off meaning it's somewhat bespoke to the i30n. In any event it would have to have been heavily strengthened to handle the extra load. This is all speculation and I'm sure more information will be available soon once the Koreans get a crack at disassembling every part in the coming weeks. I understand production of Veloster N commenced yesterday!!

Noticing also there a lot of 4.6+ final drives available in the Hyundai parts bin for those of you more unhinged than most.

 

[jeroenvde]

I was thinking...

If you have a non performance N, could you swap to a Performance final drive to have some extra ponies
Doing the opposite the Performance N will lose some ponies but have a better fuel economy since the engine makes less revs.

Noticing also there a lot of 4.6+ final drives available in the Hyundai parts bin for those of you more unhinged than most.

Whoa even better!

 

[koevasi]

I was thinking...

If you have a non performance N, could you swap to a Performance final drive to have some extra ponies
Doing the opposite the Performance N will lose some ponies but have a better fuel economy since the engine makes less revs.




Whoa even better!

I am now beginning to see just how Hyundai were able to bring this car to the showroom at that price range. None of the parts are bespoke and the N brand is built on their setup and marketing expertise. All this is actually quite interesting in terms of interchangeability of parts between different models. The brakes for example are 345mm and 314mm front and rear. Genesis G90 comes with 360mm and 341mm brakes with 4/2 pistons to boot!

 

[Stash-N]

I am now beginning to see just how Hyundai were able to bring this car to the showroom at that price range. None of the parts are bespoke and the N brand is built on their setup and marketing expertise. All this is actually quite interesting in terms of interchangeability of parts between different models. The brakes for example are 345mm and 314mm front and rear. Genesis G90 comes with 360mm and 341mm brakes with 4/2 pistons to boot!

You know stuff koevasi. Can we assume you have some connection to Hyundai / Kia or associated manufacturer?

 

[koevasi]

You know stuff koevasi. Can we assume you have some connection to Hyundai / Kia or associated manufacturer?

Just my day off today. Living in Korea and knowing the language makes researching quite easy. I also know a few mechanics who only really fix Hyundai/Kia cars.

 

[Stash-N]

Great to have you on this forum in any matter.

 

[Phill]

Hyundai seems to have utilised components from other models or at least manufactured in house parts for the i30N. The Sonata based engine and the "own brand" brakes and seats. This is good thing and has kept the costs down so we the public can afford such a performance vehicle.
I have not read or heard about the origin of the gearbox however. Anyone know if this is from another model Hyundai or is it bespoke for the i30N ?

Interestingly park up next to a Golf R and compared front brake calipers. Havent had a chance to look at PN's but they look identical, even the font is!

 

[Stash-N]

My understanding was the brakes are Hyundai "in house" units. I could not tell you the origin of the VW units but doubt they come from a common parts bin. Do they look the same ? Yes. Then they do a similar job on similar sized vehicle so they would look similar I expect. I think Albert Biermann said something like you can only do a couple of laps around a track with the VW Golf GTi before the brakes start fading. The Hyundai units by all account keep on keeping on.

 

[CleanSlate]

I don't know too much technical detail but I suspect that the brake cooling is much better in the N

 

[Stash-N]

I think you may be correct CleanSlate. Much has been said about brake cooling ducts for the N but looking on the net much is said about "fitting" brake cooling ducts to VW GTi and R. This sort of thing struck me when researching both cars. (VW and Hyundai i30N) So many people having to modify their VW vehicles to make them either reliable or to improve the OEM parts in some way. Look, I am sure the aftermarket companies will get on the i30N bandwagon soon enough but it seems like we don't have too. No plastic sumps or oil filters to see here.

 

[Bchliu]

From what was indicated to us at yesterday's demo in Sydney - the brakes on the i30N are much better than the Golf R's brakes overall from their internal testing. They borrowed a Golf R from VW and did the same metrics as the i30N out on the track.. the Golf R's brakes started to fade a lot quicker than the i30N with not that much improvement in performance wise.

 

[Eddie Awesome]

So when I'm idling and in neutral, I press the clutch. No noise.

As soon as I release the clutch, there is a knocking noise.

Possibly gearbox input bearing or clutch ? I have contacted Hyundai so just waiting for them to come back to me.

Just wondering if anyone else got this too

6k miles on the clock

 

[MrDeeJay]

Is it not just the clutch bearing? It's a very heavy duty clutch to cope with the launch control.
I hear it disengage when crawling in 1st and pressing the clutch in, but only when at very low speed and low revs.
You can hear a clunk and spin down as the gears disengage.

 

[alinturbut]

I hear the same noises. Seems a bit raw, but got used to it and it was always there.

 

[Deleted member 360]

Same as @MrDeeJay

 

[Eddie Awesome]

Hmm perhaps. It's just weird that I've never noticed it before, but only recently. I'll compare it with other i30Ns on the next meet just out of interest.

 

[CleanSlate]

In all gears except third my gear stick is solid and still but third feels like its rubbing up against something. Third also doesn't feel like it drops in smoothly all the time either like the syncros are slightly off.

Reading up online it appears that this is something I shouldn't be too worried about but I've asked the dealer to take a look anyway.

Anyone else got the third gear jitters?