Topic: 70 Boss 302 P/S

[J_Speegle]

Ok, I just spied a later picture and either Ford changed their mind on part numbers or the earlier MPCs have the rear support or hose retainer called out wrong.

Is the subject and in turn the engineering or part number listed in the Assembly Manual?

Difficult to determine which might be a mistake or just a change with only two differing resources

[Bossbill]

I'll inspect that discontinuity as soon as I get it back! I'll work on that in the next few days.

Digging into this like a dog tugging on a pull toy ...

Just to recap on the issue...
The 67 and 68 p/s pump bracket (3A732) was aluminum. It required a strap on the back in order to stabilize the pump at the rear (3E602).
I believe sometime in 68 Ford decided to use another bracket at the back to hold the steel part of the outlet tube and keep it from moving around. It's called a hose index bracket. This would have been in addition to any rear bracket stabilization device.

Later cars use a steel 3A732 bracket which went over the top of the pump and held the rear of the pump around the outlet. This obviated the requirement of the rear support (3E602). That bracket is in reply 5.

In 70 it appears there were two major SBF 3A732 brackets. One for the 302 and 351W and another for the 351C. The difference was in the position of the outlet. The small Windors were in the middle of the pump and housing. The Cleveland was shifted off to the side. And the outlet was larger. This is shown in reply 5 as well.

Another difference was in the pump reservoir can. While the Windsors still had the normal hose routing, the Cleveland/B302 can routed the inlet and outlet straight down.
The inlet was now a bent tube soldered onto the can so that the hose could come up straight from underneath.
This pic applies:


The outlet was a curvy affair and paralleled the inlet on its way down.
This pic applies:


According to other pics I've found it doesn't look like a hose indexing bracket was required -- at the rear. Here is a pic of a dirty 70 351C Mustang as viewed under the car, straight up. The bottom of the fuel pump is to the left.


It appear that there is a tab welded to the inlet pipe and I'm guessing some sort of half circle bracket held the tube in place.

Another option is from this picture of the same area:

This is a closeup of my first pic and shows a double clip (like a 3) that holds the two tubes together. It's possible the double clip could fasten to the tab above or simply float.

The can that I currently have is shown below:


There is a spot on the tube where a tab could have been, but that's uncertain.

Since no one has posted a pic of how their Boss is configured, this is all I have up to now.

If you have that "3" clip. let me know!

[Bossbill]

I had forgotten about this notation in the 75 MPC.

Using this pic previously posted:


Note an item I had previously failed to notice as I had no pictorial data -- 3E506, lower left.

This noted in the MPC as follows:


The MPC pic is extremely vague as to what this looks like. but it has some "3" resemblance.

The words (which appear fuzzy here) are "CLIP -- P/S HOSE RETAINING".

[Bossbill]

The Deadnutson.com site lists an item I have never seen. My focus is on the Shelby right now so there are many details about the 70 cars that I haven't really looked at.
Sure I own a Boss, but I haven't owned any other 70 Mustangs. The 67 and 70 P/S systems are similar in appearance but when you get right down to it very few of the parts interchange (correctly).

The rubber insulator under the car has a special metal indexing tang to keep the pressure line oriented correctly. Here's a pic from the Deadnutson.com site that shows it installed:
 


And here it is all by itself:


Yet another thing to buy for my conversion.

[krelboyne]

I found the 1970 P/S line clip at the pump. Comparison photo with the similar clip found on 1971-73 power steering systems. Small clip on the right is 1970.
I think it 'floats', meaning not attached to the reservoir can.

[preaction]

I just sold this pump on ebay it came from a 70 Cougar with 351C.

[Bossbill]

PM to Scott.

Thanks preaction! I REALLY appreciate the picture.

[Bossbill]

In an effort to get out as much information as possible, I found this pic of the back of 302/351W vs. 351C pump styles on the WCCC site. I missed this earlier.

I've sourced a number of parts from them in the past and recommend them without reservation!

Edit to add numeric engine size.

[Bossbill]

I'm baaack.

In the pic above the notes under each type say (third column):

Port Location            Port Size               Notes
Center outlet port || small outlet port || All engines except 1970 small block 
Offset outlet port || Large outlet port || 351W/351C Boss 302

which I don't believe is correct. I have the 3A732 bracket for a 302/351W and the size and location of the port is of type "center outlet port."
I believe the "offset outlet port" is only used on the 351C and the 351C head Boss 302.
It may have to do with the configuration of the head and subsequent clearances between the pump, bracket and tube on the back side. On the Boss it puts the inlet hose in a better position for routing the front mounted cooler.

[krelboyne]

I'm baaack.

In the pic above the notes under each type say (third column):

Port Location            Port Size               Notes
Center outlet port || small outlet port || All engines except 1970 small block 
Offset outlet port || Large outlet port || 351W/351C Boss 302

which I don't believe is correct. I have the 3A732 bracket for a 302/351W and the size and location of the port is of type "center outlet port."
I believe the "offset outlet port" is only used on the 351C and the 351C head Boss 302.
It may have to do with the configuration of the head and subsequent clearances between the pump, bracket and tube on the back side. On the Boss it puts the inlet hose in a better position for routing the front mounted cooler.

When I wrote that listing many moons ago, it was directed at Cougar owners.
That one year, 1970 pump was used on 1970 - 351W, 351C, and Boss 302.  I don't know about F code 302-2V, or any of 6 cylinder engines in a 1970 Mustang or other Ford / Mercury..
Was not used on 1970 428CJ.

[Bossbill]

Thanks for clearing that up.

I'm trying to wade through the 70 P/S morass and, as you can see, the water is murky.

[Bossbill]

Ok, the 70 Chassis Assy Manual was ordered new. No idea where it went.

I'm looking specifically at the 302 H.O. installation.

1st pic is of the back of the pump. View 1 shows the clip as D0DA-3E506-A.
2nd pic is of the clip itself in cross section.
3rd pic is of the B302 installation.

I should have a clip from WCCC soon. Phew...another unkown item closed out.

[Bossbill]

Is the subject and in turn the engineering or part number listed in the Assembly Manual?

Difficult to determine which might be a mistake or just a change with only two differing resources

I did find that 3C511 is also the name of a "group". I'm not sure what that means, but a quick search through the MPC will net you all sorts of P/S parts identifed as 3C511.

[Bossbill]

After I got the clip I also found a kinda/sorta version on an early Bronco pump I have. Just never thought to look at that pump.

After looking at the pics at WCCC I thought I got a great deal on a 70 only center link (on The Auction Site). Silly me.  After all the babble on the net about how the 67-69 steering (less B2 and Shelby) system is very similar (except for control inlet size) it turns out that's not right either.
The 67 and 68 P/S drag links look very much the same. The 69 has a very different bend at the idler.

In the attached pic you will find the 69 only on top and the 67-68 on the bottom. While they may functionally interchange (do they?) they are not identical.

The 70 drag link may look identical to the 69 and have the same hole-to-hole dimension and length but it is thicker in diameter and has larger tie rod holes.

The 1970 drag link is about 0.850 inches thick, the 67-69 are about 0.790 inches thick.

Off to spend more money at WCCC.

[Bossbill]

On another topic.

I just bought a reproduction coil bracket on this forum from Kcodecoupe. The Boss 302 forum isn't clear if all B2s came with this bracket. I suspect so. Although my engine is matching a few things have been previously changed out and I did not have this bracket.

If you have a tach dash the oil pressure gauge from the standard dash is replaced with a low pressure light (idiot light) in order to fit the tach. The sender for the light is just a small switch screwed into the block (or extension).
This switch is small enough that it doesn't matter if you have P/S or not.


If you have the standard dash you retain the oil pressure gauge in the dash and you have the dome shaped oil pressure sender.

If you have manual steering the sender is on the end of a hex extension.
If you have power steering the dome shaped sender doesn't fit.
So a small flex hose extension is required to fit the sender above the P/S pump.
See pic of fitting and as installed.