Hitchcocks Forum

I was checking the oilways on the crankcase and timing cover today, on my '54 magneto fired bullet, prior to reassembling the engine. I've noticed the oil pump is very different to the one in the indian bullet engine I removed. The British bronze pump discs are smaller and have only 1 port compared to the 4 on the indian discs. Second is that the feed pump on the british motor has 4 holes drilled in the case. The top 2 (numbers 2 + 3 when viewed from the rear of the engine) are feed from the tank and send to the filter and on to the crank.Number 4 is joined to number 3, but is out of range of the port in the rocking disc. to be fed by it. Number 1 is a complete mystery as it goes only about an inch, - Straight to the timing cover gasket, which also has a hole corresponding to the exit for number 1 hole. However, there is no drilling in the crankcase. The nearest is the feed hole from the oil tank, which is a good 4mm forward of it and is 2x the size, which goes to number 3 hole at the feed pump. Both 1 and 4 hole are out of range of the disc port both in the radius from centre and range of rock of the disc. What are they supposed to do?

Christ Zippy, I've gone for a lie down in a darkened room along with two paracetamol and a stiff brandy...

Did this motor ever work as is? Or is it a mongrel made from bits..

Have you got the correct timing cover?

Sorry mate but pictures with notation would help the likes of Mark M identify...

I'll try - But this forum doesn't like me when I try to post pics :/ I've tried to keep it simple, but it's a crazy design. It appears to be an attempt at a hi pressure bypass system - but that 1st hole makes no sense as it goes nowhere exept the gasket. As for the parts belonging to the same motor, I think so - as the weathering was continuous. ie It would start on 1 piece and continue onto the next. Same story with the minor dings on the casings at the joints. The parts book I have for this motor also agrees they all belong together.

Pic's and description are here:-

http://s1274.photobucket.com/user/zippy ... sort=3&o=1

So thats it then.... The sum total of the knowledge on this forum....1 condecending dig...I'll figure it out myself then.... as usual

Well zippy, that is probably your best idea

Sadly norm, you are right...

Well, I went to look at the pics and was none the wiser, then the screen changed. I guess photobucket got hacked?



some page came up on my browser in french saying that I had been looking at porn and had to pay 100 euros. My browser would not leave the page and when I went to close it the quit menu option was greyed out!



Even more worrying, I'm using a an apple macbook pro! Had to force quit safari browser.



Apparently the page is some virus called Ukash virus scam, and comes in many languages. I copied the link and tried on tor browser, similar page but in dutch, tailored for the Netherlands. there's an FBI one to con Americans as well, all wanting 100 pounds, dollars or euros.



Its a scam and although you need to reset safari from the menu bar, if you get it on a PC, then it can apparently be very bad!



Strange it should come up on photobucket !!!



Sorry zippy, still don't know the answer

Zippy, I won't look at the pictures if Scaly is getting malware pop ups if you don't mind! Unless it thinks Bike Porn is a problem?! The pumps apparent mis-alignment rings a bell, I'm sure I've read about this before but I'll need to do some research. Will come back to you.
REgards, Mark

Trying to read your original post but there is a bloody advert for protective jeans in the way. The set up looks pretty similar to the one on my old bullet. The function should be pretty straight forward although I do get your point about the misalignment of the oil ways in the pump body. Presumably if it's an old bike it must work otherwise it would either have seized or pumped out huge quantities of smoke and splattered oil out of the breather. I'd suggest putting it back together and spinning the worm drive with something and checking to see if it marches. I spun mine and got a jet of oil straight in the mug for my troubles. There was no doubt the pressure pump worked and I could put my finger over the scavenging pump hole and it would create a decent vacuum and eventually stop me from turn the pump. If it does both of these things then I would suggest putting it back together and writing it off as a mystery. If not then maybe plug and re drill it although this seems fairly drastic.