Attempting the oil mod on 83 interceptor, looking for expertise!

hey, I just ordered an oil adapter that I am going to mount on the bike. The adapter im getting is built with a in and out outlets, now im thinking of blocking off the in, Then splitting the out with a T or Y junction up to the heads. I am also thinking of changing the banjo bolts to actual fittings. I would like any ideas or insight on this, good or bad. Thanks again!

 

Jamie Daugherty here on the boards could give you pointers on this...

You have to invoke his name Three times though to make him show up.

 

I sent him a PM concerning this already because I understand he used to sell a kit that I was talking to him about last year. I have heard that its not available anymore form anyone so its DIY time!

 

If he doesn't respond you may have to sacrifice a small animal to his good name.

Larger than a Squirrel but no bigger than an adult goat.

He will smell the creatures blood and misery and he will appear.

 

I did the drill & tap mod on my '83VFF I like the way it looks and i don't have the oil filter plate pushing the filter out to close to the header pipe.

 

The trick is that you need a restriction in the system somewhere. This can be done using the parts itself - the collective restriction of the hose and fittings can be enough. Depending on the size and design of the parts you use will determine if you need to fabricate a restriction. It's not a bolt-on-and-go thing for the DIY person.

The key here is that the top end needs better oil flow, but nothing compared to what the bottom end needs. You need to ensure adequate flow without dropping the pressure at the crank. Be prepared for some trial and error to get this right.

 

Sounds complicated.

 

It's not, really. Just time consuming.

 

I must ask what the target pressure is for crank and cams. I would say that I would rather flatten cams all day rather than have a bearing failure at the crank. Bearing failure at the crank is far more common and serious than a cam failure IMO.

 

Just overfill the crankcase.

That'll ensure strong oil pressure and adequate oil throughout the engine.

:tongue:


Disclaimer: I am not responsible for anyone that doesn't realize that the above mentioned "advice" is in actuality a joke.

 

You only need 5-10psi at idle when cold. The pressure should come up quickly when the engine speed increases and should run between 40-80psi. When cold it can get close to 100psi. The bypass is supposed to bleed off lower than that, but it seems the oil is so thick that it can't flow out of the bypass valve fast enough and the pump achieves some pretty high pressures. Another reason to let your bike warm up for a minute or two.

The pressure at the top end doesn't need to be very much, 20psi is the most you need. The idea is that you need something, it can't drop to zero like stock!

 

DRill and Tap on Monday

HI All
Jamie - A quickie...
What is a good starting point for the restriction size? eg: The diameter of the 1/8in NPT fitting is ...?
Will be doing the mod on monday with SSFlex piping and will probably be going for a banjo on the bottom too. Keeps the height down to a minimum but then I will probably have to build in a restriction into a fitting or the shaft of the banjo itself.
Btw Happy Christmas everyone!
Regards
R

 

I decided to follow Jamie's advice and go with his kit considering I would have paid more just in parts. But I am going to use the sandwich filter for an oil cooler.

 

I thought he quit selling the kits?

-Jake

 

Officially I did, but I'll still put them together as a special request.