Does the Landry/Schoeb oiling mod work?

Hey, I picked up my '84 750 interceptor a month ago, and studied up on it and noticed the premature cam wear. They said a common problem being low oil pressure at low idle. 6 P.S.I at 1000 rpm, and was told just to set idle higher and run it at higher RPM's, which is fine, but I'd rather fix the situation before I cheat my way around it.

I will adjust both valves at same time and compensate + .002" on each valve for the cam wear, which it has-I can hear it rattling away. And I'm going to switch to a synthetic brand-Mobil 1-10 W 40. I made the lines and fittings and am going to install it tonight or tomorrow, by drilling into the main oil gallery where there is a supposed 90 P.S.I.

But I was told by a Honda tech that neither the Landry/Schoeb nor the Tierney-Hollen setup improves the situation-the only was to counter it is to have precise valve adjustments, better quality oil and switch to the later cams with no through holes at the ends of the cams and just let 'em wear away.

Will this method improve oiling or just cause me to drill and wreck my case?

Thanks,

P.S.-I'm new to the board, but not to mechanics nor riding:biggrin: .

 

There's a simple and *free* mod that involves simply drilling two perpendicular holes in each of the cam end bearing caps.
I believe it was a Honda-issued Tech Bulletin.

Do a search in this forum; I know I've seen it around here someplace.

And it sounds like your dealer may not have enough experience to know of the problem, or simply hasn't heard of the proper fix.

 

I got an adapter and new lines from Dave Dodge, cost was little over $200, but since my bike is quite rare, and I am going to keep it, not bad price in long run. It feeds the heads with pressurized clean oil. Did no affect oil pressure.

 

The only reason I went with the Landry/Schoeb method is because it taps into the main gallery and it's on the bottom where it will pick up more oil-the down side of that being is picking up particles-"dirty oil".

Can't do any harm to the cams other than the dirty oil so I'll install it anyways, I just wanted to know if I have to have the 1500-1800 RPM idle and 3500 RPM cruise after the install, fun for fast jaunts around town, but not for saving gas and money.

Oh well, time for an oil change and valve adjustment...

 

I did it to mine (stole the idea from the racing Hondas 20+ years ago) at about 30,000km and it has over 100,000km now (lots of racing miles on there). Cams and rockers still look good. It gives you clean, high pressure oil after the crank instead of unfiltered, low pressure oil that's split from the transmission circuit. Might help the trans last longer.

 

I actually just read a little spot on a website that states;

"The stock oil system picks up oil from the oil pan through
a strainer to the oil pump. The pump feeds oil out in two
directions. One, at about 6psi, runs towards the transmission.
It splits to feed the tranny and the cylinder heads. The other,
at about 70psi, runs to the oil filter and from there to the crank
and main gallery."

So, either way, i should get better oil flow to my heads. One will have filtered oil and a little more pressure, while the other being in the crankcase having the same filtered oil(after going through the crank) and a little less pressure.

 

going over it myself

just picked up an 83 vf750f and i'm weighing oil mod options. while the bike's open at the mech i'd like to get it done. i live in l.a. and am in no way a mech, but is there an option that i could find locally w/o waiting for shipping and whatnot and get my mech to implement tomorro?

p.s. i love that streetfighter look, it's tres nice; my front fairing is cracked at the bolt on the left and it looks kinda nasty.. what did you do on the remod there?

 

The front fairings on Interceptors cracked all around especially down the middle. The guy I bought my bike reinforced all the week points with fibreglass. The only way you can fix it is wip it off, sand, and fill with resin, sand and fill with resin until it looks nice and pretty, then see if you can reinforce the backside somewhat with fiberglass sheets/particles and resin.

My bike had the front end smacked and the brackets cut off my someone. I put some universal headlight brackets, CB400 headlight, univ. signals and away I went. I just sent the front forks in to get the slight bend out of them. But i like the streetfighter look a lot more than with the front fairing, especially with the custom "flat black" paint job...

For the oil mod, any performance place will carry AN fittings and braided lines. I used -4 all around, with new banjo's-you can reuse your 10MM bolts and crush washers(but better to get new washers). Either that custom oil sandwich adapter or drill and tap into the case and remove the little plastic plug leading to the main oil gallery.