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Sump Leak


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#1 dablik

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Posted 28 June 2020 - 12:48 pm

Righto wot to do about this, both mating surfaces, the sump pan and crankcases were vapour blasted and perfectly clean, before fitting they had a wipe down with acetone and fitted to torque spec with torque wrench, also used home made gasket, after finding the initial leak i replaced the gasket with a pattern gasket and applied blue hylomar letting it gas off for about 15 mins before installing the cover again, the leak has returned, albeit to a lesser degree..

 

I've considered leaving it now until i need my 1st initial oil change but not sure if that's detrimental, how much pressure is the sump actually under, lots or not lots.....

 

The leak is directly at the centre front bolt area and nowhere else, should i consider using summit like permatex this time around ?

 

The specific bolt does'nt appear to have been overtorqued at any time and seems to snug up nicely but i wondered if a helicoil would make certain of that...

 

Suggestions welcome...


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1991 MK1 in need of some TLC watch this space  :) Sorted and on the Road Mick :P :P it's the bike that Jack built ;)


#2 Rallyist

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Posted 28 June 2020 - 01:01 pm

Sure it hasn't got a hairline crack in it?


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#3 dapleb

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Posted 28 June 2020 - 01:16 pm

As rally says. Suspicious leak at same place with diff gaskets!
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#4 Snowbird

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Posted 28 June 2020 - 01:34 pm

Are you talking about the area highlighted here? Is the dowel seated wrong and and holding it off slightly? The whole thing could be slightly distorted as castings like that often are, you could clean it up and run a marker pen around the face then go over with a fine flat stone and check for low spots, anywhere with marker pen left will be low.

Would it be feasable to get a skim taken off it?

I have flourescent dye penetrant crack testing stuff at work if you want it checked for cracks, they usually stand out like a sore thumb under the uv light..

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#5 dablik

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Posted 28 June 2020 - 02:19 pm

Sure it hasn't got a hairline crack in it?

Actually managed to have a chat with Lee and that was his 1st thought, although before it came off the bike it was leak free, i suppose that's possible though but how the crack has manifested would be a mystery, defo not over torqued.


Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.

Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead

 

1991 MK1 in need of some TLC watch this space  :) Sorted and on the Road Mick :P :P it's the bike that Jack built ;)


#6 wicklamulla

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Posted 28 June 2020 - 02:24 pm

porous?


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#7 dablik

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Posted 28 June 2020 - 02:29 pm

Are you talking about the area highlighted here? Is the dowel seated wrong and and holding it off slightly? The whole thing could be slightly distorted as castings like that often are, you could clean it up and run a marker pen around the face then go over with a fine flat stone and check for low spots, anywhere with marker pen left will be low.

Would it be feasable to get a skim taken off it?

I have flourescent dye penetrant crack testing stuff at work if you want it checked for cracks, they usually stand out like a sore thumb under the uv light..

attachicon.gif sump.jpg

Hi Dave, yep matey exactly that bolt highlighted, it's difficult to see but it seems to pool on the case above that bolt, sure it's not a dowel as was quite particular but will double check, i'll do as you suggest with a marker pen and flat stone that's a good tip, so possibly a slight warp maybe, then a skim if needed,have a few flat stones knocking about for knife sharpening, assume grit grade just the same as sand paper.

 

Plan after chatting with Lee is to redo once i change from running in oil to regular and keep an eye on the oil level, and when refitting use some specific type of goo he knows of..

 

Ps Will hold off on the crack testing dye until i've checked it out, if it happens again after the next fix i'll replace the sump cover..


Edited by dablik, 28 June 2020 - 02:32 pm.

Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.

Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead

 

1991 MK1 in need of some TLC watch this space  :) Sorted and on the Road Mick :P :P it's the bike that Jack built ;)


#8 chrisr

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Posted 28 June 2020 - 02:37 pm

Don’t you be taking up Lee’s time Cliff, he’s busy!
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#9 dapleb

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Posted 28 June 2020 - 03:13 pm

If you intend to leaf (personally I would sort it now). Be careful as a "little" leak with 5mins running ain't so little after 50mins. Also directly in lion with exhaust and rear tyre!
"Whats up", "Piston Broke", "Yeah me too...hic"

If you want to mark your location on the Carpe map: http://www.carpe-tdm...opic.php?t=5117

Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.

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#10 leehenty

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Posted 28 June 2020 - 03:23 pm

If it needs a light skim I can do it on the miller for you Cliff.
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#11 dablik

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Posted 28 June 2020 - 03:37 pm

Don’t you be taking up Lee’s time Cliff, he’s busy!

:lol: well you know he's got 10 years left on sorting that bike so he can fit in a little extra in-between.


If you intend to leaf (personally I would sort it now). Be careful as a "little" leak with 5mins running ain't so little after 50mins. Also directly in lion with exhaust and rear tyre!

:um: :um:


If it needs a light skim I can do it on the miller for you Cliff.

Thanks Lee


Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.

Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead

 

1991 MK1 in need of some TLC watch this space  :) Sorted and on the Road Mick :P :P it's the bike that Jack built ;)


#12 SJCA

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Posted 28 June 2020 - 04:09 pm

Don't know if it's any help but I had this problem on mine after an oil and filter change,just one or two drops from the same area.

I took it off again changed the gasket for a Yamaha gasket and very carefully tightened up the bolts in the pattern suggested in the manual to avoid distortion. Result no leak. 



#13 dablik

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Posted 28 June 2020 - 05:55 pm

Don't know if it's any help but I had this problem on mine after an oil and filter change,just one or two drops from the same area.

I took it off again changed the gasket for a Yamaha gasket and very carefully tightened up the bolts in the pattern suggested in the manual to avoid distortion. Result no leak. 

Cheers, could it be one of those places that just requires an OEM gasket maybe !!


Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.

Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead

 

1991 MK1 in need of some TLC watch this space  :) Sorted and on the Road Mick :P :P it's the bike that Jack built ;)


#14 Studley Ramrod

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Posted 28 June 2020 - 06:04 pm

Knowing your luck I'd say yes, it probably is. :lol:  At least you can rule out the gasket if an oem one is fitted and it still leaks.

 

Is running in oil a different viscosity to the usual stuff ?


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#15 leehenty

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Posted 28 June 2020 - 06:04 pm

Sealant is Loctite 5660 specifically for sealing crank cases.
I'll donate a tube as I got a boxfull when I ordered 1 to do my Enfield.

Edited by leehenty, 28 June 2020 - 06:05 pm.

2002 900 silver,oil pressure switch with brass 90 degree conversion, RG fork protectors. Wilburs custom made rear Shock with remote hydraulic preload and RG shocktube, Wilburs front springs. Scotoiler with a custom made swing arm delivery unit. Silicone radiator hoses.BMW 1150 handguards with Touratech extensions, Carbon Fibre yoke cover and fender extenda, MRA flip screen, Yamaha Engine bars, SW Motech Centre Stand, Kappa wingrack three box Luggage with E21's as option from the K960 boxes, Zumo 660 satnav on Touratech mount, Led Voltage monitor, Baglux tank cover, Clear LED Rear light, Aux LED brake light, BikeVis bullet LED's under front  nose,Stainless rear axle nut, stainless chain adjusters, stainless wheel spacers front and rear, Probolt Polished Stainless Flanged Hex engine screws, Polished stainless fairing screws, stainless disc bolts. Titanium brake pins front, Probolt Titanium Flanged Hex Front Caliper Bolts & Rear caliper slide pins Adventure Spec Tool tube under rear rack, left and right sides with custom alloy mounts.<p>Top Sellerie double gel pad seat. Carbon Fibre inner dash and side infill panels. Anodised black alloy swingarm pivot bolt covers and footpegs, Nano II Gear indicator.

#16 dablik

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Posted 28 June 2020 - 06:32 pm

Knowing your luck I'd say yes, it probably is. :lol:  At least you can rule out the gasket if an oem one is fitted and it still leaks.

 

Is running in oil a different viscosity to the usual stuff ?

Aint that the truth :lol: Lee's popping the magic stuff in the post. Running in oil viscosity, suprisingly not, the one i have is 10w40 mineral..


Sealant is Loctite 5660 specifically for sealing crank cases.
I'll donate a tube as I got a boxfull when I ordered 1 to do my Enfield.

Good man, i'll have a little read up :good:


Bigred mk1 R1 Calipers- Braided lines- Givi wing rack-Crash bungs- Hi vis bullets-PR2's- and a hoot to ride.

Quad 900 Silver Laser duo tech pipes-Scott oiler-Engine crash bars- Radiator mounted see me ring LED's-Datatool system 3 alarm -Centre stand- Extender fender-Renthal bars-Handle bar risers-Mirror extenders-BMW GS Handgaurds-Acumen uprated horn & Nautilus-Stainless steel Radiator guard-Givi wing rack-OEM screen-Yammy touring screen-MRA Vario-MRA Double bubble cut down for fast as fk riding-Tiger screen-Tank protector-Stomp grip panels-Optimate lead

 

1991 MK1 in need of some TLC watch this space  :) Sorted and on the Road Mick :P :P it's the bike that Jack built ;)



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