Full Size Ford Bronco Forum banner

21 - 40 of 53 Posts

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
Lol nope, its tucked down below the engine and everything was too hot to fish my hands in there. Gotta get a new belt too.
 

·
Registered
'92 Custom w/ '95 MAF 5.0, 33's, 4.10 LSD
Joined
·
1,997 Posts
@AbandonedBronco I have the same setup as you, and have thought about swapping to a serpentine setup, my only hold-up being that I would have to ditch my York A/C compressor.
You can switch the York over to a serpentine pulley.
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #23
Snuck out to the junk yard over lunch! Rented a puller at O'Reilly, found an open ended wrench in my underhood toolbox and went out and found an early 80s F-150.

Had this off in just a few minutes.







I'll pull mine off tonight and slide this on, and see how it lines up.
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #24 (Edited)
Well darn. The pulley won't work.

Just ran the part number, and it's for a Ford CII pump, which has a 0.6875" bore.
The Saginaw has a 0.748" bore.


Is the CII pump the stock pump? Does that mean that stock pulleys won't work on the Saginaw?
 

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
Well darn. The pulley won't work.

Just ran the part number, and it's for a Ford CII pump, which has a 0.6875" bore.
The Saginaw has a 0.748" bore.


Is the CII pump the stock pump? Does that mean that stock pulleys won't work on the Saginaw?
Yep, C2 is the stock truck unit. Its gotta be from an econoline to work. Or take it to your engine builder and have them turn the bore diameter larger. They could do it in 5 minutes.

I'm planning a JY trip Thursday afternoon. Most vans up there are too new, but I'll keep an eye open.
 

·
Ford-a-Holic
1996 EB w/5.8 TOO much lift, 44" Mudders & 5:43-5:38's
Joined
·
4,272 Posts
....take it to your engine builder and have them turn the bore diameter larger. They could do it in 5 minutes.
:iagree ..but then again, I'm a big fan of making the stuff i got work.

:2cent
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #27
Yep, C2 is the stock truck unit. Its gotta be from an econoline to work. Or take it to your engine builder and have them turn the bore diameter larger. They could do it in 5 minutes.

I'm planning a JY trip Thursday afternoon. Most vans up there are too new, but I'll keep an eye open.
In all my research over the last two days, I haven't seen a Saginaw pump pulley that looks different. So, I think they're all on the middle, or back groove.

I'll call my machinist in the morning. I had thought about drilling it out myself, but if I even get it slightly at an angle, or off center, it'll wobble. No good.

:iagree ..but then again, I'm a big fan of making the stuff i got work.

:2cent
Me too! And all stock.
So... if you have any ideas, I'm all ears. :D
 

·
Ford-a-Holic
1996 EB w/5.8 TOO much lift, 44" Mudders & 5:43-5:38's
Joined
·
4,272 Posts
I'd bore it on a lathe to the correct size.
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #29
I'd bore it on a lathe to the correct size.
Oh, oh. I misinterpreted what you said.
I thought you meant get what you have to work "as is". Gotcha now. :thumbup

The pulley is dropped off at the machine shop.


I told him 0.748" (19mm), which is what I've seen posted online.

However, I've also seen 3/4" posted. 0.750".

Does anyone know what the correct bore is for a Saginaw pulley? I didn't figure 2 thousands would make a difference, but he said when you're pressing something on, it definitely does. If it needs to be 0.750, and it's 0.748, it won't go on. If it's 0.750, but needs to be 0.748" it won't grip as well, and could spin out. :doh0715:
 

·
Ford-a-Holic
1996 EB w/5.8 TOO much lift, 44" Mudders & 5:43-5:38's
Joined
·
4,272 Posts

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #31
Do you think 0.748" vs. 0.750" would make that much a difference, if he went with 0.748"?

I imagine I could polish down the shaft to decrease its diameter a little bit, but I wouldn't want to have to do that every time I put on a new pump (not that that happens all that often.)
 

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
Do you think 0.748" vs. 0.750" would make that much a difference, if he went with 0.748"?

I imagine I could polish down the shaft to decrease its diameter a little bit, but I wouldn't want to have to do that every time I put on a new pump (not that that happens all that often.)
Have him do .748. If it doesnt fit, all he has to do is run a .750 reamer through it and viola!.

Here's my pics. Brackets and pulley courtesy of @GetBent4x4

Also, it appears my rear brace bolt and spacer disappeared somewhere between Hoyt and Moab..?





 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #33
A-HAH!

Is that a bolt sticking out of the end of your PS pulley snout? Looks like you have a GM Saginaw, and not a Ford. They're held on with a bolt, and are keyed.
I wish I had known that they would fit into the bracket, and that they lined up like that. I'd have just grabbed one of those out of the yard and been done with it.

The only issue with the drilling twice is that if it doesn't fit, I'll probably have to pay him for shop time again to re-set up and zap it for 0.750". He said he'd be squeezing me in as it is.
Of course, I could try to mitigate that by having my PS pump ready to go, so I could try pressing it on in the parking lot.
 

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
A-HAH!

Is that a bolt sticking out of the end of your PS pulley snout? Looks like you have a GM Saginaw, and not a Ford. They're held on with a bolt, and are keyed.
I wish I had known that they would fit into the bracket, and that they lined up like that. I'd have just grabbed one of those out of the yard and been done with it.

The only issue with the drilling twice is that if it doesn't fit, I'll probably have to pay him for shop time again to re-set up and zap it for 0.750". He said he'd be squeezing me in as it is.
Of course, I could try to mitigate that by having my PS pump ready to go, so I could try pressing it on in the parking lot.
Just have him measure the pump shaft and cut to fit. That way it's his tool measuring both the shaft and part for the utmost precision.

Yes there is a bolt in the front of the shaft. However, I seem to recall that pulley being tough to get on and only added the bolt for redundancy. IDK?! I asked for a pump for an 85 e250 or e350 with a 300, that's what advance gave me. Had no issues other than the 2" gap between the rear brace and the back face of the canned ham reservoir. That's the spacer and bolt I seem to have lost.
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #35
Ah, I didn't know you bought a Ford unit. If that's the case, I think that thread on the end is just for pressing it on.



Yeah, I'm going to call him ASAP in the morning. He already has the pulley, and I don't want him drilling it out. I finally got my pulley off and measured it, and it's 0.740! If he cuts it to 0.748 (let alone 0.750), it's going to fall right off. I don't imagine my micrometer is that much off.
It'd suck to pay for machining it into a piece of junk.
 

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
Ah, I didn't know you bought a Ford unit. If that's the case, I think that thread on the end is just for pressing it on.



Yeah, I'm going to call him ASAP in the morning. He already has the pulley, and I don't want him drilling it out. I finally got my pulley off and measured it, and it's 0.740! If he cuts it to 0.748 (let alone 0.750), it's going to fall right off. I don't imagine my micrometer is that much off.
It'd suck to pay for machining it into a piece of junk.
Definitely call as soon as possible. If he has an answering machine, leave a message. He may try and do it before the workday.

Does your micrometer close on zero? Wipe the faces off too. Dropping a pair of dial calipers once can knock them off a few thou. Mikes are sturdier, but you never know.
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #37
The pair I have is digital, and it has a zeroing feature. It'd be odd that every peice of printed literature I can find would say it's 0.750 or 0.748", and it ends up being 0.740. Wouldn't make sense.

I'll try and call and leave a message. I'd rather him work from what I physically have, than some online number.
 

·
Super Moderator
Joined
·
4,464 Posts
Discussion Starter #38
Well, he beat me to it.

However, when I had him measure my old pulley with his tools, he came out to 0.747, and he bored it to 0.748 (19mm), so I think the difference is going to be negligible. $25, can't argue with that.

I'll press it on tonight and see how it goes.

BigBlue, I'm curious what pulley you have on there. I can't seem to find any pics online of any Ford Saginaw pump that has that pulley on it.
 

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
According to my old PMs with @GetBent4x4 it's off an 81 van with a 300, with bart Simpson painted on the back doors lol
 

·
Addicted to Junk
85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
Joined
·
11,128 Posts
Maybe I can get a part number off it
 
21 - 40 of 53 Posts
Top