Modifying Oil Pumps

[Greenthorn]

This picture shows the difference in the 461 regular oiler vs a modified oiler or HO oiler, I can't remember where I stole the picture from, it was either from Lakeside Andy or Mdavlee?

 

[Gunn]

So you're just modding the control bolt and getting good gains? I found trying to mod the piston to be tough for a neaderthal like myself.

 

[stihl saws]

Which oil pump can be swapped into a 361?? Thought I read it was a 460 pump. Or should I just try and modify mine ? Drives me nuts how stingy it is.

I remember reading that they fit. The 361 is very frugal.

 

[junkman]

i believe the 461 and 660 have the same pump also

 

[Mastermind]

So you're just modding the control bolt and getting good gains? I found trying to mod the piston to be tough for a neaderthal like myself.

Yes sir, it makes a big difference. I do worry about it lasting, if it's a case hardened piece, then, we just nixed the hard part.

 

[Magnumitis]

This is a simple and effective modification. My stock 461 oiler would hardly wet a 24" bar. Bought a used 460 oiler and modded it this way, now it covers a 28" very well. 32" wouldn't be a problem either. Thanks mdavlee

 

[Magnumitis]

i believe the 461 and 660 have the same pump also

This, I'm curious.

 

[mdavlee]

This, I'm curious.

Nope

 

[porsche965]

Good thread and topic. Subbed.

 

[mdavlee]

361/362/460/461 are the same. 1122 early pumps are different from later ones

 

[huskihl]

When I did my 440 and 066, I used a cutoff wheel and increased the angle on the plunger ramp. Oils the 36" now. Your way looks like it'll work very well too

 

[Magnumitis]

Nope

Didn't think so

 

[redoakneck]

The high output oiler is stock on the 460 wrap / west coast model, I believe??

Been a while, but I put that oiler control bolt on 2 -660s and 361. You can see the difference

I have the old stock control bolts, maybe try this with a dremel??

 

[Lightning Performance]

I like the control bolt work better. It leaves the plunger ramp untouched and still hardened.
Both pump mods are good for extra long stumping bars and cant racers.
This is one important place to polish the metal unlike cylinder walls and ports.

 

[redoakneck]

Ok, I looked it up. I believe it is the aus model for 660

Control bolt-1128-647-4802
Pump piston-1122-647-0602

Whole pump
1122-640-3201
Lakeside53 did a 3 part how to swap them out.

Randy, awesome info and pictures!!
Thanks !!!

 

[T.Roller]

Stihl needs to take notes on Huskys oilers lol

 

[Magnumitis]

Stihl needs to take notes on Huskys oilers lol

Stihl and Husqvarna need to take note on Echo oilers

 

[huskihl]

Stihl needs to take notes on Huskys oilers lol[/QUOTES]
A 395 oiler is stupid simple compared to a 660. First time I took one apart I just shook my head. Overengineering at its finest in a stihl

 

[T.Roller]

Stihl and Husqvarna need to take note on Echo oilers

Hmmmm ...... echos just don't have the ass to need a great oiler lol

 

[T.Roller]

Very true. But back on topic I will be trying this on my 044 cause its pitiful