Unusual problem.

rex · Post by **rex** » Sat Mar 17, 2007 5:20 pm

Got home today to find oil dripping of bottom, front, of engine. Eventually traced it to coming from behind starter motor. Removed starter motor and it looks like there is a patch on the engine wall where oil is seeping through! Like its porous.

Anyone had this? Please tell me there's a cure other than new engine. Was supposed to be trading it in on a new bike!!

Mines a 98 R by the way.
rex

beckster · Post by **beckster** » Sat Mar 17, 2007 5:40 pm

had to replace my starter when i was rebuilding the bike but i can't remember any porous area's fr oil to leak through.Could the oil be coming down from the top of the front cylinder through a bad joint on the cam cover?

rex · Post by **rex** » Sat Mar 17, 2007 6:12 pm

Nope, its def coming through the wall of the engine. Only when it's running though - must be the pressure.

Don't think it's <i>supposed</i> to be porous.

Jaglifter · Post by **Jaglifter** » Sat Mar 17, 2007 6:29 pm

Rex, Get it clean and look closer. Cast alloy is definitely not porous. If its a faulty casting then it should have shown up ages ago. I'd guess its either cracked (unlikely) or leaking from somewhere else.

Zakalwe · Post by **Zakalwe** » Sat Mar 17, 2007 7:28 pm

Has someone welded the cases in the past and made a horlicks of it? A bad weld can be porous....Look closeley for grinding/polishing marks.

TBH, I bet it is coming from somewhere else though (especially if it has just styarted recently)

Stormin Ben · Post by **Stormin Ben** » Sat Mar 17, 2007 11:32 pm

If you're part-exing it, just smother some araldite over the porou area.
Should last til you get out of the showroom

LotusSevenMan · Post by **LotusSevenMan** » Sun Mar 18, 2007 12:12 am

Stormin' Ben.
I was gonna say clean the area thoroughly with surgical spirit (or similar degreaser). Then use some JB WELD (available now I think in Halfords and B & Q) and smooth it over the area. It is grey in colour so should blend OK (or spray over it with silver!).

Fantastic stuff that can actually be filed and shaped if required.

Kitch · Post by **Kitch** » Sun Mar 18, 2007 3:28 am

I know there were smilies involved, but please don't just paint over it or bodge it and flog it off to some unsuspecting sap.

Think if it spews oil out and the guy who buys it stacks it into a bus as a result...

Get it fixed.

LotusSevenMan · Post by **LotusSevenMan** » Sun Mar 18, 2007 9:43 am

Kitch.
The

from me is because it works and cures a porous crankcase casting. It's not a bodge in the given sense that it'll give up five minutes after getting rid of the bike. Carried out as above with it applied correctly would see a long term, viable solution the changing the crankcase!!!

Post by **sirch345** » Mon Mar 19, 2007 12:23 pm

Stormin Ben wrote:If you're part-exing it, just smother some araldite over the porou area.
Should last til you get out of the showroom

Someone please remind me not to buy any secondhand bikes from Ben, if at sometime he has any for sale

KarlosVTR · Post by **KarlosVTR** » Wed Mar 21, 2007 2:39 pm

they glue lotus elises together because its a load spread over a wider area than a weld

JB weld is effing strong!!! do it