w9 distributor

[glennster]

does the w9 use a different distributor than the ones used in the h/m/ supers ect because of the reverse rotation or are they all the same? this site shows a new aftermarket one listed for the 9 but it is the same for the other tractors.

 

[1974vette]

It’s different

 

[glennster]

It’s different

is it the centrifugal advance that is different? as far as i can tell comparing my 9 distributor to the m distributor
, the breaker plate and ignition points are in the same position i havent removed the breaker plate yet.
.

 

[rustred]

does the w9 use a different distributor than the ones used in the h/m/ supers ect because of the reverse rotation or are they all the same? this site shows a new aftermarket one listed for the 9 but it is the same for the other tractors.

They all look the same on the outside but the difference would be in the advance curves. The w9 would have a diff. Shaft and weights if it’s advancing in the opposite direction I would think. You need to go by the dist number as different ones have diff. Advance curves.

 

[DeltaRed]

IIRC,the gas W9 is the same clockwise rotation as the gas M/H. It's only the diesel models that use a counter clockwise rotation.The advance curve may be different,but it would run with athedifferent distributor.I think that a distributor from a gas start diesel would run on a gas tractor(and vise versa),As long as the plug wires are in the correct position. I dont know if the diesels have advance wts or not as I have not looked. Someone more knoledgeable can chime in.

 

[DeltaRed]

IIRC,the gas W9 is the same clockwise rotation as the gas M/H. It's only the diesel models that use a counter clockwise rotation.The advance curve may be different,but it would run with athedifferent distributor.I think that a distributor from a gas start diesel would run on a gas tractor(and vise versa),As long as the plug wires are in the correct position. I dont know if the diesels have advance wts or not as I have not looked. Someone more knoledgeable can chime in.

The real gas start guru was Brian Krog of minnesota. But he has been gone for several years.He farmed quite a bit of ground with a whole fleet of gas start diesels.

 

[Janicholson]

does the w9 use a different distributor than the ones used in the h/m/ supers ect because of the reverse rotation or are they all the same? this site shows a new aftermarket one listed for the 9 but it is the same for the other tractors.

I believe the W9 distributor rotates CCW, opposite of the HM series. It is a gas clone of the diesel. Jim

 

[Jim Becker]

As I recall, the gas start Diesels have little or no advance, some even use a one-piece shaft. The 9-series distributors are CCW. If you swap between a CW and CCW distributor, you will have a centrifugal retard rather than advance, not what you want. Don't use the part number on the housing to try to identify a version of the distributor. They will all look the same as all use the same housing and it is the part number of the housing. Versions can be identified by a code stamped into the bottom flange of the distributor. There are more details in the July-August 2007 Red Power Magazine.

 

[D Slater]

does the w9 use a different distributor than the ones used in the h/m/ supers ect because of the reverse rotation or are they all the same? this site shows a new aftermarket one listed for the 9 but it is the same for the other tractors.

Yes, turns opposite of H and M and lot of others. Reason is because the W-9 has a idler gear between crank and cam gear. One for a 9 has a different breaker plate, weight guard weights and point cam. Diesel ones with advance can be converted to use on a W-9 by adjusting size of advance limit hole to needed size and using advance springs from the gas choices. As posted some diesels just had a straight distributor shaft with a rotor on top. Most of those were found on later diesel production.

 

[BarnyardEngineering]

There was a big discussion of this subject over on Red Power a couple weeks ago. Yes, it's reverse rotation. The gas engine 9's are reverse rotation same as the diesels. What they sell on this site will make the tractor run, but it will not run well or produce good power because it will have no advance.

W9 distributors are extremely rare in the wild. You can identify one by taking the cap off and giving the rotor a twist. If it turns clockwise and springs back if's an everything-but-W9 gas distributor.

I'm sure someone crafty enough could figure out how to add advance to a diesel distributor or reverse the advance on a gas distributor.

 

[rustred]

I believe the W9 distributor rotates CCW, opposite of the HM series. It is a gas clone of the diesel. Jim

yes he knows that its ccw. i would call the diesel a clone of the gas, just like the 350 oldsmobile gas engine they made a diesel out of it

 

[Roger in Iowa]

A DISTRIBUTOR FOR A W9 is only for a W9! Dad was there and done that. About ruined the engine because he put on the wrong distributor. Rotation is different! Instead of advancing the curve it retards the timing. Maybe you can rework one off of another letter tractor.

NO IT DOES NOT SPRING BACK. That is for a MAGNETO! Distributors do not have that feature.

 

[Roger in Iowa]

does the w9 use a different distributor than the ones used in the h/m/ supers ect because of the reverse rotation or are they all the same? this site shows a new aftermarket one listed for the 9 but it is the same for the other tractors.

This site is WRONG. They are different.

 

[glennster]

A DISTRIBUTOR FOR A W9 is only for a W9! Dad was there and done that. About ruined the engine because he put on the wrong distributor. Rotation is different! Instead of advancing the curve it retards the timing. Maybe you can rework one off of another letter tractor.

NO IT DOES NOT SPRING BACK. That is for a MAGNETO! Distributors do not have that feature.

is it possible to transfer the advance mechanism to a distributor for say a farmall m?

 

[D Slater]

Yes, turns opposite of H and M and lot of others. Reason is because the W-9 has a idler gear between crank and cam gear. One for a 9 has a different breaker plate, weight guard weights and point cam. Diesel ones with advance can be converted to use on a W-9 by adjusting size of advance limit hole to needed size and using advance springs from the gas choices. As posted some diesels just had a straight distributor shaft with a rotor on top. Most of those were found on later diesel production.

When you can't find a W-9 distributor the easiest fix is a diesel distributor with advance. Every part is the same as a W-9 one but the distributor shaft and advance springs. Use gasoline springs, shaft doesn't need changed just slot advance limit hole to give 35 to 40 degrees max at crank. Hole in the diesel only gives around 8 degrees max at crank. Have general size of holes or slot needed for max advance wrote down somewhere if I can find. H and M drive camshaft from crank gear. Due to bigger block used in W-9 to keep things more compact a idler gear was driven by crank gear then idler to cam gear. Cam turns opposite of a M. Same number of gears from cam on drive ignition unit as a M.

 

[Blackstack]

does the w9 use a different distributor than the ones used in the h/m/ supers ect because of the reverse rotation or are they all the same? this site shows a new aftermarket one listed for the 9 but it is the same for the other tractors.

All gas start diesels AND the W9, 600 and 650 gas use a mag, distributor and pump that rotates the opposite direction of all the others.

 

[tractorguy2]

The W9 distributor turns CCW as does the WD9. BUT THE W9 AND WD9 USE DIFFERENT DISTRIBUTORS.. The diesel distributors don't have advance weights under the breaker plate.

 

[D Slater]

The W9 distributor turns CCW as does the WD9. BUT THE W9 AND WD9 USE DIFFERENT DISTRIBUTORS.. The diesel distributors don't have advance weights under the breaker plate.

Lot of the diesel do have advance weights the same part as a 9 gas. Picture of two diesel shafts, the straight shaft that used no weights and one with small hole that used weights. Bigger hole and two extra weight guard mount holes was added when experimenting on another application.