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#1 Beancounter

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Posted 31 March 2006 - 03:52 pm

Good afternoon all, how goes it? smile.gif

I'm planning on going to Europe in the Summer, probably doing a couple of thousand miles, maybe more. I'm a little concerned about the oil consumption of my mkII TDM. Currently drinking about 1 litre every 1000 or so miles.

As such, I'm coming round to the idea if stripping the engine in an effort to try to trace the cause. Has anyone successfully sourced their consumption problem? Worn rings? Worn valve stem seals?

While I am it, can anyone recommend things I should replace as a matter of course?

TIA,

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#2 Walt_M.

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Posted 31 March 2006 - 05:11 pm

I've seen quite a few posts regarding oil consumption so I've been keeping a close eye on my '92. It has 22K miles on it and I've seen no oil use so far. How many miles are there on the bikes that are using oil?

#3 Beancounter

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Posted 31 March 2006 - 05:55 pm

QUOTE(Walt_M. @ Fri 31st Mar 2006, 05:56 PM) <{POST_SNAPBACK}>
I've seen quite a few posts regarding oil consumption so I've been keeping a close eye on my '92. It has 22K miles on it and I've seen no oil use so far. How many miles are there on the bikes that are using oil?


Mine has so far done 75k miles of primarily commuting use - no really hard riding like trackdays or the like.

I think it's generally an accepted characterisitc of TDMs/Yamahas.

#4 wicklamulla

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Posted 31 March 2006 - 06:59 pm

mine drinks 1 litre every 1000 miles and she's up to 21,000 miles now, but the fecker has always drank a fair bit since i bought it with 9000 miles on.

spyball alarm/immob, bluespot brake calipers and Stainless hoses, Fournales air adjustable shock with Remote Resevoir, forks raised 10mm thru yokes, racetech linear fork springs in 15 wt oil, Kappa wingrack/luggage, heated grips, Kedo handguards, dual heat controller to power heated jacket liner and or pants!!, Stebel 136DB horn, K&N air filter, colour matched Baglux tank cover (magnetic tank bag modified to fit cover), osram +50% headloight bulbs, headlight protector,"NitramSpecial" parking loight, tail light indicators all running on LED's & incorporate "Lite Buddies", MK7 Scottoiler fitted, taller screen, 2-2 stainless steel CCC's, Devil stainless down pipes. MKI Renntec engine crash bars & sump guard.
engine changed july 2007 on a dyno run it made 79.1BHP / Torque 59.9Had a brief flirtation with a 1999 MKIIa but it blew an exaust valve on the M5 so was sold on to be repaired.

I loike tay and hang sangwiches !

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#5 dapleb

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Posted 31 March 2006 - 08:08 pm

I wish I knew what caused it. I'm fairly convinced it has nothing to do with fine mists, output shaft seals, tangs, blocked oilways or any combination thereof.

My mkI uses no oil...sadly I have no idea if it used oil prior to rebuild as it was blown up when I got it lol.

There are certainly more reports of oil probs with mkII than mkI (is that cos the majority here ride mkII's? I ruh roh).

The problem is def amplified by long distance/fast runs. I reckon alot of the people reporting no/little consumption on mkII's are doing lots of town mileage or pootling locally.

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#6 dandywarhol

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Posted 01 April 2006 - 02:18 am

QUOTE(dapleb @ Fri 31st Mar 2006, 06:53 PM) <{POST_SNAPBACK}>
I wish I knew what caused it. I'm fairly convinced it has nothing to do with fine mists, output shaft seals, tangs, blocked oilways or any combination thereof.

My mkI uses no oil...sadly I have no idea if it used oil prior to rebuild as it was blown up when I got it lol.

There are certainly more reports of oil probs with mkII than mkI (is that cos the majority here ride mkII's? I ruh roh).

The problem is def amplified by long distance/fast runs. I reckon alot of the people reporting no/little consumption on mkII's are doing lots of town mileage or pootling locally.
Cheers
dapleb


I'll second that.......................8 hours of transuk/europe high(ish) speed cruising on motorways and they'll drink the stuff..........I've seen mine go from the high to the low marks in 600 miles blink.gif Next few days pottering around the minor roads and the level doesn't move!

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#7 Dave in Thailand

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Posted 01 April 2006 - 03:12 am

QUOTE(dapleb @ Fri 31st Mar 2006, 07:53 PM) <{POST_SNAPBACK}>
The problem is def amplified by long distance/fast runs. I reckon alot of the people reporting no/little consumption on mkII's are doing lots of town mileage or pootling locally.

Definitely the case. My mkII will get through a litre in less than 1000 miles if I am cruising at 90-100mph.

Main engine change from mkI to mkII is the funny crank to make it sound like a vee twin? Can not for the life of me imagine why this would cause oil use, though.

#8 wicklamulla

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Posted 01 April 2006 - 02:29 pm

QUOTE(dandywarhol @ Sat 1st Apr 2006, 03:03 AM) <{POST_SNAPBACK}>
I'll second that.......................8 hours of transuk/europe high(ish) speed cruising on motorways and they'll drink the stuff..........I've seen mine go from the high to the low marks in 600 miles blink.gif Next few days pottering around the minor roads and the level doesn't move!




would a 6 speed box cut down on d'oil consumption i wonder ??? lower revs, less stress etc etc ?? maybe all mkII owners shud just buy 900's rotflmmfao.gif

spyball alarm/immob, bluespot brake calipers and Stainless hoses, Fournales air adjustable shock with Remote Resevoir, forks raised 10mm thru yokes, racetech linear fork springs in 15 wt oil, Kappa wingrack/luggage, heated grips, Kedo handguards, dual heat controller to power heated jacket liner and or pants!!, Stebel 136DB horn, K&N air filter, colour matched Baglux tank cover (magnetic tank bag modified to fit cover), osram +50% headloight bulbs, headlight protector,"NitramSpecial" parking loight, tail light indicators all running on LED's & incorporate "Lite Buddies", MK7 Scottoiler fitted, taller screen, 2-2 stainless steel CCC's, Devil stainless down pipes. MKI Renntec engine crash bars & sump guard.
engine changed july 2007 on a dyno run it made 79.1BHP / Torque 59.9Had a brief flirtation with a 1999 MKIIa but it blew an exaust valve on the M5 so was sold on to be repaired.

I loike tay and hang sangwiches !

www.kenhogantreeservices.co.uk

http://s33.photobuck...77/wickla/?sc=6



http://reg.imageshack.us/v_images.php

post-1-1150550733.gifpost-1-1150550726.gifpost-1-1150559830.gif


#9 Guest_Emmett_*

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Posted 01 April 2006 - 02:34 pm

QUOTE(wicklamulla @ Sat 1st Apr 2006, 03:14 PM) <{POST_SNAPBACK}>
would a 6 speed box cut down on d'oil consumption i wonder ??? lower revs, less stress etc etc ?? maybe all mkII owners shud just buy 900's rotflmmfao.gif

If they weren't so bloody ugly................................................and gay, I nearly forgot gay. blink.gif

Dya think you could fit the plastics from a mk2 onto a 900 unsure.gif

#10 wicklamulla

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Posted 01 April 2006 - 02:44 pm

QUOTE(Emmett @ Sat 1st Apr 2006, 03:19 PM) <{POST_SNAPBACK}>
If they weren't so bloody ugly................................................and gay, I nearly forgot gay. blink.gif

Dya think you could fit the plastics from a mk2 onto a 900 unsure.gif




nah whay not tek " the easy route" and fit a complete 900 enjun to yer hi miler mkII, junk the fi and fit carbs to it. it has been done to a mkI.

spyball alarm/immob, bluespot brake calipers and Stainless hoses, Fournales air adjustable shock with Remote Resevoir, forks raised 10mm thru yokes, racetech linear fork springs in 15 wt oil, Kappa wingrack/luggage, heated grips, Kedo handguards, dual heat controller to power heated jacket liner and or pants!!, Stebel 136DB horn, K&N air filter, colour matched Baglux tank cover (magnetic tank bag modified to fit cover), osram +50% headloight bulbs, headlight protector,"NitramSpecial" parking loight, tail light indicators all running on LED's & incorporate "Lite Buddies", MK7 Scottoiler fitted, taller screen, 2-2 stainless steel CCC's, Devil stainless down pipes. MKI Renntec engine crash bars & sump guard.
engine changed july 2007 on a dyno run it made 79.1BHP / Torque 59.9Had a brief flirtation with a 1999 MKIIa but it blew an exaust valve on the M5 so was sold on to be repaired.

I loike tay and hang sangwiches !

www.kenhogantreeservices.co.uk

http://s33.photobuck...77/wickla/?sc=6



http://reg.imageshack.us/v_images.php

post-1-1150550733.gifpost-1-1150550726.gifpost-1-1150559830.gif


#11 ROB1

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Posted 01 April 2006 - 03:09 pm

QUOTE(Walt_M. @ Fri 31st Mar 2006, 07:56 PM) <{POST_SNAPBACK}>
I've seen quite a few posts regarding oil consumption so I've been keeping a close eye on my '92. It has 22K miles on it and I've seen no oil use so far. How many miles are there on the bikes that are using oil?

i got my 96 mk2 with 19000 now up to 38000 .it didnt use any oil wen i got it but does use sum now.i do differern riding now mainly short thrashes & its geared down 1 tooth so it does spin up quicker.wen putting engine bak 2gether get a perfect end gap on ur piston rings even if this means buying the next size up & filling them 2 the correct size.haynes manual shows you how.

#12 tdm850rider

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Posted 01 April 2006 - 03:26 pm

Starting a 'new topic' after this with a POLL. Bought new: Uses Oil, Bought with milage:uses oil, etc...
Maybe we will see a patern. Oil Consumption Poll.

Edited by tdm850rider, 01 April 2006 - 03:37 pm.

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#13 Walt_M.

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Posted 01 April 2006 - 04:28 pm

Just a thought on MkII oil consumption. If the crank was changed to 270 degree on MkII's, one piston up and one down, might that be the problem? It would seem that crankcase pressure would vary more on the MkIs with the pistons in synch so Yamaha probably vented for that. Maybe they fergot to change the venting on the MkIIs?

#14 dandywarhol

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Posted 01 April 2006 - 06:43 pm

The pistons are in 180 deg. synch on the mk1 Walt, shouldn't make a helluva lot of difference huh.gif

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#15 Walt_M.

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Posted 02 April 2006 - 12:46 am

Well, I thought the crank was changed since I saw a post about a rebuild that mentioned ease of piston ring compression on the 'one up-one down' piston configuration. Mea Culpa. Never mind!

#16 dandywarhol

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Posted 02 April 2006 - 01:43 am

QUOTE(Walt_M. @ Sat 1st Apr 2006, 11:31 PM) <{POST_SNAPBACK}>
Well, I thought the crank was changed since I saw a post about a rebuild that mentioned ease of piston ring compression on the 'one up-one down' piston configuration. Mea Culpa. Never mind!

The crank was changed fron a one up/one down configuration to a one three quarters up/one up configuration on the mk2, TRX and 900

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#17 Dave in Thailand

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Posted 02 April 2006 - 09:46 am

QUOTE(dandywarhol @ Sun 2nd Apr 2006, 01:28 AM) <{POST_SNAPBACK}>
The crank was changed fron a one up/one down configuration to a one three quarters up/one up configuration on the mk2, TRX and 900

I always thought that with a 'normal' parallel twin, like the mkI, pistons went up and down together; one inducting when the other is powering. Is this not regarded as being 360 degs apart, and that the crank is considered to be a 720 deg crank, due to there being two revolutions per cycle. huh.gif

I'm probably completely wrong; shall have a quick look at the manual.

#18 dapleb

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Posted 02 April 2006 - 11:22 am

QUOTE(daveinthailand @ Sun 2nd Apr 2006, 10:31 AM) <{POST_SNAPBACK}>
I always thought that with a 'normal' parallel twin, like the mkI, pistons went up and down together


Indeed.

This 360degree and 270degree CRANK thing bugs me.......the CAM is also doing the same thing .......why not call it "the 360degree CAM engine" and the "270 degree CAM engine" unsure.gif ? Or even better refer to the firing pattern....that covers all of the components .

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#19 Guinness

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Posted 02 April 2006 - 10:19 pm

QUOTE(wicklamulla @ Sat 1st Apr 2006, 03:14 PM) <{POST_SNAPBACK}>
-//- maybe all mkII owners shud just buy 900's rotflmmfao.gif

wicki ph34r.gif you seem to making up excuses to buy a 9er tongue.gif
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#20 Chris TDM

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Posted 02 April 2006 - 10:30 pm

i have a mk2 and she's not burn a drop of mobil 1 since i've had her (5000 miles) she's on 18,500. looking at the serivce log and receipts, she's had a oil flush and change evey 5000miles since new. she's also only ever been run on mobil 1.

and thing is i do a lot of long, 60mph+ riding 2 up with gear, and little town work
Ridgeway mcc

GSF400
ER500
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CBR1100xx

But only one working at a time!!


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