Hitchcocks Forum

I have been sorting out a wet sumping issue on a 1993 500cc alloy barrel Bullet.

I thought that the compression seemed very low for a 500 single (i.e. I can turn the bike over by hand).

I have taken the head off and currently doing a leak test (after two to three hours no sign of leak down).

I have taken the barrel off, honing is still visible on the liner, no obvious signs of wear at the thrust faces.

No sign of blow back on the piston.

The head gasket (a composite one, which will be relaced by a solid copper one) seems OK with no signs of burn through or gas leakage.

I will check the ring gaps (does anyone know the gaps for an alloy barrel with liner).

The bike is showing a +40 piston.

Am I expecting too much re the compression (i.e. being able to turn it over by hand)?

Regards

Pat

https://youtu.be/vgXl7wilGFA

Copy and paste the above or however it works????

Hi Chris

Wow, that lady has very impressive guns.

Seriously, is that normal?

If so, what is the point of the decompressor?

Regards

Pat

I would not want to pick a fight with that woman. I weigh 15 stone and I can stand on the kick-start of my Electra X (ish) when it is on the compression stroke and nothing happens it won't move.

Hi Guys--------this video has been doing the rounds for some years now...When it first came out there was some suggestion that it was either faked or the video "air-brushed" .... We don't actually see the very beginning ie}--- where she walks up to a obviously non-running engine, goes through a starting routine etc--etc.....Here's another one with a better start

I think that the video has been faked up some how. It still takes a fair bit of a push with my leg to start my bullet 350. Maybe her motorcycle does not have much compression either.

My fav party trick is to start my Bullet with my left hand...


I can start my Super Meteor from warm the same way.


Correctly tuned, and my 10 year old grand-daughter has no problems starting a Bullet from cold.




110psi+, double check that both pushrods are free to spin, check decomp valve and reset the valve.
If your rings were so badly stuffed as to effect compression the piston would be fornicated too.
Check stand-off between barrel, head, and gasket...

A Bullet engine will start on little or no compression

My 2000 Bullet would sometimes start while I was slowly moving the kick-start lever to find TDC. At other times it would take what felt like 200 kicks to start it. That`s why I named it" Start yer bastard."