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12-11-2010, 01:21 PM | #21 |
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Re: 8ba in 32 ford ?
Sturgis 39, the 39-41 single belt sheave is usable but the fan extension may have to be removed for a 32 installation with the original cross member. The 39-41 pulley is a little harder to find than the 42 -48 types.
32Gnu, The 42-48 pulley had a seal surface on the rear extended portion and the 8BA type has a press on spiral grooved seal sleeve. The 28-48 Ford Chassis Parts catalog lists the 8BA-6303 crankshaft as a replacement crankshaft for the 39 thru 48 engines but the end result was to use insert type connecting rods instead of floaters and it has an overall length of 26.03". The original crank for the 29A/59A series was 29A-6303-B. It was listed at 26" overall length. 334Charlie, the RT pumps are the 8RT truck type pumps used from 1948 thru 1952 in most all truck & pick up installations. Kerby |
12-11-2010, 04:41 PM | #22 | |
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Re: 8ba in 32 ford ?
Quote:
Kerby What do you mean by the fan extension?
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12-11-2010, 05:20 PM | #23 |
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Re: 8ba in 32 ford ?
Technicaly the 39 has two different pulleys. The 39 standard still had the fan on the gen, so I am now figuring you are refering to the standard type. The 39 deluxe had the fan on the crankshaft but it is still a single sheave type. The deluxe is the one I was refering to. In 1940, the generator driven fans were history. Even the 60 HP was set up for a crank mounted fan.
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12-11-2010, 06:10 PM | #24 |
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Re: 8ba in 32 ford ?
The 39-41 left, 42-48 on right, Zeke
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12-12-2010, 10:35 AM | #25 |
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Re: 8ba in 32 ford ?
shown below is the 32-39 short fan, i belive they made 3 different lengths. you will not have enough rough for the newer style fan assemblies.
the stock aluminum that you see in my pictures as an adaptor was somthing i turned out real quick just so i could move on to mounting my motor mounts andd fitting the center crossmember. it can be avoided by making the slots on the fan longer, but the blades will be pretty close to the belt. its roughly 3/4 of an inch thick, and i made both of them at .5 and .25 thick because my truck and the lathe were in 2 different places and i wanted to be prepared to adjust accrodingly to the spaced allowed behind the radiator. in the end i may just use 1 spacer .5 thick with the center alignment collar and 4 holes bolting the aftermarket fan to the pulley i have linked in my previous post. Last edited by cadillacoffin; 12-12-2010 at 10:41 AM. |
01-11-2011, 01:21 AM | #26 |
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Re: 8ba in 32 ford ?
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01-11-2011, 07:36 AM | #27 |
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Re: 8ba in 32 ford ?
regular truck = RT.... Call Speedway they have them and will know what you are talking about. Or there are some guys on here that can help.. little bird told me to stay away from Drakes pumps..
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03-13-2011, 12:30 PM | #28 |
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Re: 8ba in 32 ford ?
Revisiting this thread I was curious & posted this very question in another posting...... I have a 38 crank pulley to replace my 8BA pulley to hopefully refrain from trimming my 32 front crossmember. The 8BA uses a collar directly behind the pulley that rides on the seal area of the timming cover. Is this collar normally retained & the 38 pulley trimmed an amount as needed for belt alignment or is the collar removed & the 38 pulley used as is ? I understand the fan mount on the pulley may need to be removed if interference is encountered, just for clarification I'm using a stock 32 "K" member & original 32 front motor mounts. Thanks, Ron
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03-13-2011, 12:47 PM | #29 |
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Re: 8ba in 32 ford ?
You may want to trim the pulley as removing that collar is no easy task if the engine is built.
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03-13-2011, 01:29 PM | #30 |
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Re: 8ba in 32 ford ?
Thanks Flat Jack 9, I'm also of the opinon that the 8-BA collar would be problematic to remove in an assembled engine with no room for a puller as I see it. I don't see the trimming of my 38 pulley requiring any lath work provided the cut is true & square...... any thoughts ?????? Thanks, Ron
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03-13-2011, 01:34 PM | #31 |
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Re: 8ba in 32 ford ?
Its definatley easier in a lathe. If you could cut most of it out and grind the top uniform it should work...
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03-14-2011, 06:17 PM | #32 |
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Re: 8ba in 32 ford ?
OK...pulleys from 1939-48 go right onto the later crank, and vice versa. 1938 and back for the short crank lack the forward extension added in '39 to bring pulley out to where the bolt and washer live...a '39 type single sheave has a collar roughly 1" long ahead of the single sheave, earlier ones lack this. The '39-41 fan type and '42-48 double ones cut back to that area where the washers seats are essentially the same thing as the semi-rare late single sheave.
The seal area on all '32-48 and also 1949 pulleys is integral with the pulley; it is an extra piece from 1950-53. If your crank has the seal piece on it, you need to remove it to install a pre 1950 pulley. I once spent a LONG time in a very dark garage learning this the hard way... All pre-1949 pulleys have the first sheave very close to the block and require early pumps and early distributor to go together easily. Normal way to remove that seal piece is to pull the timing gear...if assembled on the car you can either cut the seal part off of any earlier pulley (there is a perfectly clear parting line to mark the cut if no lathe) OR (naughty, naughty!) dirtball mechanics have been known to cut into the seal piece from above with a sharp cold chisel, blade of chisel fore and aft axial to crank. If you pound fairly gently (rough pounding here would be realdamnstupid) you can slowly gnerate a groove less than all the way through that will expand the thing a touch. |
03-14-2011, 07:42 PM | #33 | |
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Re: 8ba in 32 ford ?
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03-15-2011, 08:54 AM | #34 |
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Re: 8ba in 32 ford ?
I have an 8BA in my 32 Roadster. It's in a stock 32 frame with a 39 trans. I used wide belt pumps I bought from Speedway, I think they are truck pumps. We shortened the front pulley and notched the stock front crossmember by about 2.5". I'm using an early style Powergen alternator that looks like a generator. We added a 2" spacer to line it up with the pumps. I put on an aluminum pulley that takes an early V8 fan. I also used a Mallory dist. Everything clears no problem. The only cut was on the front Xmember. Almost 3K on the car now. Did the same exact setup on my 32 Tudor on a stock frame. I substituted a 56 Chevy 265 for the 8BA . No problem with the firewall just notched the front Xmember just like we did for the flathead.
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04-06-2013, 10:57 AM | #35 |
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Re: 8ba in 32 ford ?
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07-28-2015, 04:20 PM | #36 |
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Re: 8ba in 32 ford ?
Bringing up this thread.
Going through the research to install a 39-41 Merc in a 32 pickup. |
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