Taking engine out burning oil

[MarkCR750]

I've got one of those on mine, it looks horrible I keep meaning to remove it and fit a pipe that runs into a small catcher on the tail fairing, that said I've never know any oil to spit out, I take it you've checked the breather outlet is clear, million to one you introduced a blockage then you fitted the KN?, not very likely I know.

[yozzer74]

Yeah checked it no blockage the breather that comes out of crank case should go to oil tank yes . I've just had a pipe coming off it there is quiet a bit of oil comes out of it is that normal ??

[steff750]

Yeah checked it no blockage the breather that comes out of crank case should go to oil tank yes

that should  be the gearbox breather (the thin pipe) . i can safely assume you have left the top engine breather and the oil tank breather to just hang down behind the battery(these are the thicker pipes} I have seen cases that people have mistakenly joined the engine breather to the oil tank that thens pressurizes the oil tank ? forcing oil out on to the back wheel very naughty 

[Bryanj]

First F2 I had to do was doing 350 miles to the pint of oil with just the stem to guide clearance excessive that went to 150 miles per pint when 1 stem seal failed(all on the exhaust side!)

[yozzer74]

Just got off phone with machine shop he says my bores are .75 over size he thinks I have the wrong size rings in can you get rings .75 over size he says looks like it's been rebored to that size ??

[Greebo]

Yozzer you should have took the engine to Steve he would have sorted it out properly..... Hopefully you will make it to CMC this year.....

[yozzer74]

I'm in contact with Steve he's helping me out with things on engine cheers

[Greebo]

I'm in contact with Steve he's helping me out with things on engine cheers

Nice one Yozzer, he is shit hot with that motor....

Ive not seen Steve for a while...remember me to him when you next speak

[paul G]

I'm in contact with Steve he's helping me out with things on engine cheers

Nice one Yozzer, he is shit hot with that motor....

Ive not seen Steve for a while...remember me to him when you next speak

Is that Steve at Rotherham classics !

[yozzer74]

It is yes

[yozzer74]

Well found a few things out today when I rebuilt the engine I bought standard size rings as there were no markings on top of the pistons to say they were over size .they are also Honda pistons they have the number 410 on the side which I'm told is for f2 engine . But what I didn't notice was the number 75 on the side of pistons . In black ink which knowing what I know now means .75 over size so now I need to find some rings to fit the pistons anyone got any ideas were I could get some from David silvers hasn't  got any [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]

[philward]

Try Cruzinimage on ebay Yozzer

[yozzer74]

Cheers Phil I will give them a try but I think I've tried them before for F2 they didn't have them 

[Nurse Julie]

Is that a crack i can see in the piston on photo No 3?

[yozzer74]

It does look like that on pic.  but it's not