351w Alternator
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
I remember it not having very much meat around there. I put my old 3/8 bolt up to it and it would have been a no go.
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Senior User
Joined: Jun 2014
Posts: 446
Likes: 0
From: Denton, TX
I will definitely check on making the old gauges work. I think it is doable.
The issue may come with a fuel sending unit that works with the old gauge. But maybe its not that big of a deal.
I am not really sure what bolt y'all are speaking of that I might need to change?
The issue may come with a fuel sending unit that works with the old gauge. But maybe its not that big of a deal.
I am not really sure what bolt y'all are speaking of that I might need to change?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Sorry, I was talking -mostly- to Matthew.
The adjusting arm is slotted a bit wider than the shank of a 3/8-16 bolt. (about 10mm)
The clamping bolt that needs to fit that arm is 8x1.25mm on the 3g alternator.
This is a picture of the 7752 housing.
You can see the 'bridge' in the adjuster ear and it is noted "8x1.25"
Take a tap and make it 3/8-16.
The alternator is installed upside down from this illustration.
The adjusting arm is slotted a bit wider than the shank of a 3/8-16 bolt. (about 10mm)
The clamping bolt that needs to fit that arm is 8x1.25mm on the 3g alternator.
This is a picture of the 7752 housing.
You can see the 'bridge' in the adjuster ear and it is noted "8x1.25"
Take a tap and make it 3/8-16.
The alternator is installed upside down from this illustration.
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Senior User
Joined: Jun 2014
Posts: 446
Likes: 0
From: Denton, TX
When I set the new alternator side by side with the old one it's a little longer from bolt hole to bolt hole. Will it still work? Seems like it should bc that arm adjusts.
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pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
It needs more stand off because the body is 148mm in diameter.
With the 7" spread a130A hits before the end of the adjustment slot.
Just tap the small hole 3/8 NC.
The other one is fine as is.
With the 7" spread a130A hits before the end of the adjustment slot.
Just tap the small hole 3/8 NC.
The other one is fine as is.
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
http://www.ebay.com/itm/15366-Goodyear-Engineered-Products-V-Belt-Fan-Belt-/400783367679?pt=Motors_Car_Truck_Parts_Accessories&hash=item5d508cddff&vxp=mtr
That's the belt I used. Those are the only belts I will use. Put it on, readjust it 3 times to keep it tight. Mine never squeaks on start up or at all with a single V belt.
The 36" belt will be a tight fit to get it on, but it fits. By the time you re stretch it 3 times it's almost in the middle of the adjustment.
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Senior User
Joined: Jun 2014
Posts: 446
Likes: 0
From: Denton, TX
Sorry to bring this up again, but when I switch the pulleys, do I need to adjust the spacing any?
The old single groove pulley is much thinner than the pulley that came on the new alternator.
if I just put the new one on, it seems like it isn't spaced right and it rubs the alternator. Did y'all have this issue?
The old single groove pulley is much thinner than the pulley that came on the new alternator.
if I just put the new one on, it seems like it isn't spaced right and it rubs the alternator. Did y'all have this issue?
Logistics Pro
Joined: Sep 2011
Posts: 4,491
Likes: 26
From: Algona,WA
Sorry to bring this up again, but when I switch the pulleys, do I need to adjust the spacing any?
The old single groove pulley is much thinner than the pulley that came on the new alternator.
if I just put the new one on, it seems like it isn't spaced right and it rubs the alternator. Did y'all have this issue?
The old single groove pulley is much thinner than the pulley that came on the new alternator.
if I just put the new one on, it seems like it isn't spaced right and it rubs the alternator. Did y'all have this issue?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
I think anyone who uses a V-belt pulley on a 3G is going to need to shim it.
One of the 3G threads on FSB had a picture and part number for a shim washer that was available at home depot.
I have not been able to find those washers lately, but that is what I used 5 or so years ago when I made the switch.
One of the 3G threads on FSB had a picture and part number for a shim washer that was available at home depot.
I have not been able to find those washers lately, but that is what I used 5 or so years ago when I made the switch.