Mystery M90 gunk,

suterman · 09-01-2006, 12:36 PM

Took the engine and gearbox out of the 940 today. split the gearbox off and found this...

Its greasy, gritty, grey and got all over me!

What is it? should I worry?

NYC_I_ROLL · 09-01-2006, 12:44 PM

Rear seal leaking + clutch dust = gunk?

or perhaps your car has created a new lifeform?

suterman · 09-01-2006, 12:49 PM

Quote:

Originally Posted by NYC_I_ROLL

Rear seal leaking + clutch dust = gunk?

or perhaps your car has created a new lifeform?

ok, sounds like a good explaination, anyways I think I killed it awith a can of degreaser and a paintbrush.

CHESH740R · 09-01-2006, 12:50 PM

Yeah 2nd that, lots of gunk and a pressure washer cleans it back to new.

ozzy · 09-01-2006, 12:55 PM

looks unusuall to me dont look like oil and brake dust to grey or is that the cameras fault??

suterman · 09-01-2006, 02:13 PM

that is the colour, I guess considering the history that this engine has had where containing its oil is concerned I shouldnt be surprised really.

v240tic · 09-04-2006, 01:57 PM

I got loads of gunk in the bellhousing of my M90. On mine it is because the dual mass flywheel is busted, and sillicone? from the damping unit between the two masses was thrown all over the place... If you have a dual mass flywheel, check if you can rotate the clutchassembly part relative to the part fixed top the flywheel. On mine there are considerable play.

Dr Dokeh · 09-04-2006, 02:22 PM

Quoted from another post....

Quote:

Originally Posted by frpe82

The dual-mass or double-mass flywheel is not recommended for power outputs over 350NM (~250HP) because it can break or go into a horrific "shudder", and sometimes even break.

350NM (about 260lb/ft i think?) was around what the Dirtwagon was making back when it was running right, so v240tic may well be right.

v240tic · 09-04-2006, 02:49 PM

Quote:

Originally Posted by Dr Dokeh

Quoted from another post....

350NM (about 260lb/ft i think?) was around what the Dirtwagon was making back when it was running right, so v240tic may well be right.

For me it only took 135hp (komfortwagon anyone...) + a steep hill + a 2000lbs trailer. M46 flywheel + TD clutch next....

JW240 · 09-04-2006, 02:59 PM

Quote:

Originally Posted by v240tic

For me it only took 135hp (komfortwagon anyone...) + a steep hill + a 2000lbs trailer. M46 flywheel + TD clutch next....

how much torque is possible with that setup... i guess i need to upgrade the B230FK+M90 combo's clutch/flywheel that i have lying around...

suterman · 09-04-2006, 03:00 PM

mmmm, perhaps I should think about a better clutch.

CAPT_BLOTTO · 09-04-2006, 03:06 PM

what does it taste like?

09-04-2006, 03:10 PM

Something I posted in another thread a while back:

Quote:

Now to the modifications to make the M90 and clutch setup take some power:
The setup mentioned below is not the standard size that the M90 would use with the dual-mass flywheel, but it is simpler, stronger and easier to come by.

1. A "flat" flywheel from a 91-94 LH2.4 940 Turbo. Preferrably lightened (and it is easy and cheap to get lightened), but not nessecary.

2. Clutch disc 850GLT, 20 splines, 228mm, Sachs p/n: 1862 314 032

3. Pressure plate, strengthened, 228mm, Sachs p/n: 3082 999 763

This setup is recommended and has proven to hold 440NM of torque (stated by ENEM and KGTrimning). A very good setup that will still give you a very good, tight clutch feeling and it will still maintain stock driveability.

The clutch and pressure plate can be found in this webshop: http://213.136.58.58/butiken/?butikid=00446

A "flat" flywheel as stated in point #1 should of course be a dish flywheel. The one I saw was virtually flat because of all the lightening/machining done to it

.

suterman · 09-05-2006, 06:14 PM

Ill bear that in mind

09-05-2006, 07:07 PM

did you find out what this stuff is yet?

mail some to me... seriously... I need about a half gram to analyze.

PM me if you're game.

Mike

v240tic · 09-15-2006, 07:14 PM

Does this look familiar???

Decided it was time to swap the busted dualmass flywheel today.

Gunk probably comes from the busted damper unit between the two parts of the flywheel.

Nicked a LH 2.4 M4X flywheel from an engine standing outside a local garage.

Was a little bit rusty on the contact surface, but came out nice with a little work with a steelbrush on the anglegrinder.

Had a clutchdisc and pressureplate for M90 + M4x flywheel lying around. Source unknown.

From the volvo pn, the disc appears to be a standard 240/740 turbo disc??? The center has M90 splines though. Probably some custom job... The pressure plate appears to be a LUK unit. According to my left foot, it appears to be a strengthened unit, I can feel the muscles in my foot growing by the mile

09-01-2006, 12:44 PM	#2
NYC_I_ROLL back from the dead Join Date: Jul 2004 Location: Neuva York	Rear seal leaking + clutch dust = gunk? or perhaps your car has created a new lifeform? __________________ __________ MARK i AN Hello. My name is Inigo Montoya. You killed my father. Prepare to die.

09-01-2006, 12:50 PM	#4
CHESH740R Board Member Join Date: Jun 2003 Location: England, that little island that everyone fled except me.	Yeah 2nd that, lots of gunk and a pressure washer cleans it back to new. __________________ & & @ 87 745 Turbo & 88 744 Turbo & 96 945 Sport Turbo 1 RIP, 1 mutating and 1 Daily Driver!!!!

09-01-2006, 12:55 PM	#5
ozzy is falling apart......... Join Date: Dec 2005 Location: England, worksop	looks unusuall to me dont look like oil and brake dust to grey or is that the cameras fault?? __________________ Project: 88' 744RS Tic16V Daily Beater: Purple Murple (blackberry purple ) 940 CD HPT SE SPORT....15G@16PSI Rising rate FPR@4bar K'cam with 3 degree advance and De-cat (soon to be RSI Stg2 cam!

09-04-2006, 01:57 PM	#7
v240tic Board Member Join Date: Nov 2002 Location: Bergen, Norway	I got loads of gunk in the bellhousing of my M90. On mine it is because the dual mass flywheel is busted, and sillicone? from the damping unit between the two masses was thrown all over the place... If you have a dual mass flywheel, check if you can rotate the clutchassembly part relative to the part fixed top the flywheel. On mine there are considerable play. __________________ Stein Ove Vikeboe Norway '80 244 DL USA (Currently under reconstruction) '86 740 Turbo Intercooler (Rusting in peace) '97 940 LPT Wagon (Daily Ride) 240 Turbo by R-sport (Norwegian page) volvo@vikeboe.com

09-04-2006, 03:06 PM	#12
CAPT_BLOTTO Haxxed? Join Date: Jul 2005 Location: Mesa, Az	what does it taste like? __________________ - from Brandon 1988 Volvo 244 DL Da Yellow Parting out the 240 Da Yellos' build thread RIP 8/15/10

09-01-2006, 12:36 PM	#1
suterman Board Member Join Date: Jun 2005 Location: UK	Mystery M90 gunk, Took the engine and gearbox out of the 940 today. split the gearbox off and found this... Its greasy, gritty, grey and got all over me! What is it? should I worry? __________________

09-01-2006, 02:13 PM	#6
suterman Board Member Join Date: Jun 2005 Location: UK	that is the colour, I guess considering the history that this engine has had where containing its oil is concerned I shouldnt be surprised really.

09-04-2006, 03:00 PM	#11
suterman Board Member Join Date: Jun 2005 Location: UK	mmmm, perhaps I should think about a better clutch.

09-05-2006, 06:14 PM	#14
suterman Board Member Join Date: Jun 2005 Location: UK	cheers fredrick Ill bear that in mind

09-05-2006, 07:07 PM	#15
740ATL Guest	did you find out what this stuff is yet? mail some to me... seriously... I need about a half gram to analyze. PM me if you're game. Mike

09-15-2006, 07:14 PM	#16
v240tic Board Member Join Date: Nov 2002 Location: Bergen, Norway	Does this look familiar??? Decided it was time to swap the busted dualmass flywheel today. Gunk probably comes from the busted damper unit between the two parts of the flywheel. Nicked a LH 2.4 M4X flywheel from an engine standing outside a local garage. Was a little bit rusty on the contact surface, but came out nice with a little work with a steelbrush on the anglegrinder. Had a clutchdisc and pressureplate for M90 + M4x flywheel lying around. Source unknown. From the volvo pn, the disc appears to be a standard 240/740 turbo disc??? The center has M90 splines though. Probably some custom job... The pressure plate appears to be a LUK unit. According to my left foot, it appears to be a strengthened unit, I can feel the muscles in my foot growing by the mile

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