M3 GTS engine with DCT

e.n335 · 05-16-2010, 01:38 AM

Hi,

BMW states, that the DCT components are unchanged in the M3 GTS. Nice.

BUT: They also state, that they fill in 1 additional liter of DCT fluid to compensate the higher load and heat due to the increased power-output of the 4.4 ltr engine.

To achieve the additional GTS displacement ( M3 GTS 4361 ccm engine displacement is still less than M62 / N62 engine displacement ) they mention to use different pistons and a different crankshaft. Cyliner bore ( 92mm ) is unchanged, stroke increased from 75.2mm to 82mm. They don't mention conrods.

Now, should we learn from this ? I guess, yes.

Eugen

sehrgut · 05-16-2010, 05:19 AM

Quote:

Originally Posted by e.n335

Hi,

BMW states, that the DCT components are unchanged in the M3 GTS. Nice.

BUT: They also state, that they fill in 1 additional liter of DCT fluid to compensate the higher load and heat due to the increased power-output of the 4.4 ltr engine.

To achieve the additional GTS displacement ( M3 GTS engine displacement is still less than M62 / N62 engine displacement ) they mention to use different pistons and a different crankshaft. Cyliner bore ( 92mm ) is unchanged, stroke increased from 75.2mm to 82mm. They don't mention conrods.

Now, should we learn from this ? I guess, yes.

Eugen

Whats there to learn from it? Facts are up

schnell325 · 05-16-2010, 05:33 AM

Interesting...........

e.n335 · 05-16-2010, 06:55 AM

Quote:

Originally Posted by sehrgut

Whats there to learn from it? Facts are up

See document attached ( sorry, it's in German ) .

r53s65e90 · 05-16-2010, 10:29 AM

Quote:

Originally Posted by e.n335

See document attached ( sorry, it's in German ) .

Thanks for the doc. Very interesting. Even more interesting is this:
"Spurverbreitung durch Distanzscheiben vorn (notwendig fur den Rad/Feder Freigang)" = "track widening using spacers at the front (necessary for free space of wheel/fender)"

Lesson : If you order competition package and want to use GTS tire sizes you may need spacers.

Why didn't they build the wheels appropriately? Also they don't mention spacer size.

M3EST · 05-16-2010, 06:11 PM

Nice info.Thanks.

sehrgut · 05-16-2010, 07:44 PM

Quote:

Originally Posted by e.n335

See document attached ( sorry, it's in German ) .

Yes this is very interesting, thanks man.

05-16-2010, 01:38 AM	#1
e.n335 Moderator 270 Rep 4,481 Posts Drives: e93 ///M3 DCT, 07/2009 Join Date: Feb 2007 Location: Switzerland, ZH iTrader: (0)	M3 GTS engine with DCT - should we learn from BMW ? Hi, BMW states, that the DCT components are unchanged in the M3 GTS. Nice. BUT: They also state, that they fill in 1 additional liter of DCT fluid to compensate the higher load and heat due to the increased power-output of the 4.4 ltr engine. To achieve the additional GTS displacement ( M3 GTS 4361 ccm engine displacement is still less than M62 / N62 engine displacement ) they mention to use different pistons and a different crankshaft. Cyliner bore ( 92mm ) is unchanged, stroke increased from 75.2mm to 82mm. They don't mention conrods. Now, should we learn from this ? I guess, yes. Eugen
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05-16-2010, 05:33 AM	#3
schnell325 Bored at work.... 890 Rep 5,389 Posts Drives: 2016 F82 M4 GTS//2022 M235iGC Join Date: Aug 2007 Location: Comox Valley iTrader: (8)	Interesting........... __________________ Grey Matter:2008 E92 M3:608/425. SG/PS SOLD! Dark Matter:2015 F80 M3:495/505. SOLD! Anti Matter :2016 F82 M4 GTS What next?!? A 2022 M235i GC- I must be getting old
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05-16-2010, 06:11 PM	#6
M3EST Rear wheel drive fanatic 51 Rep 604 Posts Drives: M3 E30-1M-M4 Join Date: Nov 2006 Location: Greece & Germany iTrader: (1) Garage List 1987 BMW M3 [0.00] 2011 BMW 1M [10.00]	Nice info.Thanks. __________________ www.speedandstyle.gr
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