A few months ago...

I called Geno's Garage about Hi-Flow Banjos and I found out they don't sell these anymore.

Does anyone know who has these in stock ?

 

I just called Wildcat Diesel last week and they said they don't either.

Told me to call Genos... there goes that idea!

 

Maybe they quit selling them because they don't make much difference.
I did some calculations a few years back and it ended up that the stock banjos only became restrictive if you were going in excess of 200 mph and getting less than 5 mpgs.

 

When I installed my modified banjo bolts I noticed a 3-4 lb pressure decrease which would mean less restriction to flow or better flow. Maybe it was just coincidence and they really don't do much good but prior to installing my modified banjo bolts I was changing lift pumps approximatly every 10,000-15,000 miles, I changed out three lift pumps within 40,000 miles. The last lift pump has lasted almost 30,000 miles and I installed the modified banjo bolts when I installed the lift pump. Coincidence, could be.

I drilled out the banjo bolts myself, I also drilled out the small holes around the top, if you do you have to be careful cause the holes around the top are offset.

 

I ordered a set for my truck in August from Geno's when I installed a new lift pump. My pressure readings are 14psi idle, 11 psi WOT. That's about 3 psi better than the old pump and stock banjo's. I would think oversizing can only help flow, and be easier on the VP44. Doubling the diameter of any pipe, will increase it's flow 4x.

If you have a drill press or some other means to hold the stock bolts, it wouldn't be too difficult to oversize them yourself with a 3/16" drill bit. The only thing you'll need is replacement washers, 2 for each banjo which are available from Cummins, and deburring skills. The banjo at the VP44 is already oversized, so you would only have to do 4 banjos.

 

Geno's banjo bolts were originally manufactured by Ray Torresdal's company:

R L Torresdal Company
1413 Highway 52
Ossian IA
(319) 532-9884

Ray decided to market them through Geno's because his company wasn't really set up to handle a high volume of low $$$ orders. You might give them a call at the phone number above, though, to see if he has an alternate outlet or if he has stopped manufacture of the oversized banjos.

P.S. - I have 'em, I like 'em, and I'm still on my original lift pump!

Rusty

 

The perpendicular holes at the top are the ones that need to be oversized, not the barrel itself. I just measured my stock banjos, all of the barrels are .287" in diameter. The smaller upper holes on the banjos from the lift pump and filter housing are .137" stock and they are inline with one another. The banjo from the VP44 already has .200" diameter holes, and these are offset from one another.

The .137" holes are the ones that can be oversized to 3/16ths(.188") or 13/64ths(.203").

 

Just a word of caution. With the oversized holes in the shank of the banjo bolts, one can twist the heads off pretty easily! Just snug them up - the washers don't need much crush to seal.

Rusty

 

Haisleys has them:

www.haisleymachine.com

 

Thanks all for your comments...

I'll be giving Haisley Machine a call...

 

I have never done a flow test on my truck, but my fuel pressure dropped about 1-2 pounds after drilling my banjos. I don't know if the pressure decrease is due to better flow or if my lift pump is starting to go at 35,000 miles.

 

Call Genos again. I had to buy a new tapped HI flow bolt to replace the one I broke two weeks ago. They have them.

Click here for a link to the Geno's fittings.

Also check out my gallery as to why you should be real careful not to overtighten the bolts.