• Welcome to ClassicBroncos! - You are currently viewing the forums as a GUEST. To take advantage of all the site features, please take a moment to register. It's fast, simple and absolutely free. So please join our community today!
    If you have problems registering or can't log into your account, please contact Admin.

Explorer bracket clearance on 351W

rguest3

Bronco Guru
Joined
Dec 13, 2012
Messages
3,780
Z Bronco - It's been awhile since I had an Explorer Serpentine. Is that lower Pulley in question mounted on the Original Bracket where the Smog Pump was?

That pulley is NOT needed for the serpentine to still work, with shorter belt of course. Cut the bracket almost up to the alternator mount. Done.
 

Broncobowsher

Total hack
Joined
Jun 4, 2002
Messages
35,630
Z Bronco - It's been awhile since I had an Explorer Serpentine. Is that lower Pulley in question mounted on the Original Bracket where the Smog Pump was?

That pulley is NOT needed for the serpentine to still work, with shorter belt of course. Cut the bracket almost up to the alternator mount. Done.

Nope. The Explorer accessory drive never had a smog pump. The idler is needed to get the belt routing to work correctly. Not really a way to just delete it.
 

rguest3

Bronco Guru
Joined
Dec 13, 2012
Messages
3,780
Hmm... I am sure that is what I did. By looking at the picture in the tech section of the "Explorer Serpentine install" it looks like the lower pulley can be deleted.

It looks like the belt can go directly from the Alternator to the Crank without going to the lower pulley on the Alternator Bracket.
 
OP
OP
Z Bronco

Z Bronco

Bronco Guru
Joined
Mar 17, 2007
Messages
1,141
I have the new motor mounts, just need the time to install. Working way too much, hopefully I can install them on Sunday as I work tomorrow. I took a before measurement from the bottom of the crank pulley, so will let you know if there is any change in engine height.
 
Joined
Feb 26, 2017
Messages
39
Loc.
East TN
I see that you are running EFI on the 351, If you want to go a little more radical I have a Edelbrock Victor EFI Upper and Lower for a 351 that I have decided to get rid of.
 
OP
OP
Z Bronco

Z Bronco

Bronco Guru
Joined
Mar 17, 2007
Messages
1,141
I finally was able to work on the Bronco and installed the WH Extreme motor mounts. I took a measurement from the floor to the bottom of the damper pulley to see if the new motor mounts would raise the engine any (front of Bronco was on jack stands). After the new motor mounts were installed the motor was raised 7/8" over the previous measurement which gives plenty of room for the Explorer bracket and pulley. Look at the original pictures that I posted showing the bracket touching the crossmember brace (or within 1/16" with adjustment). Glad I did this, now I just need more time to work on my Bronco. I took pictures, but I think my contributor status expired. I will post pictures once my renewal goes through.
 

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
49,242
Cool. Thanks for taking the extra time to measure before and after. So I guess I'll stop saying that they're "not supposed to" lift the engine. Since enough have reported that they do (though some without actual measurements) lift, and you confirmed yours with the tape measure, I'll go along with the lift scenario.

Seen plenty, but never installed a set personally to measure. Glad you did.
Appreciate it.

Paul
 
OP
OP
Z Bronco

Z Bronco

Bronco Guru
Joined
Mar 17, 2007
Messages
1,141
Here are pictures. As you can see there is now plenty of clearance. My old motor mounts were pretty hammered, but they were new 27 years ago. ;D

Thanks everyone for your feed back.

IMG_5326.jpg

IMG_5322.jpg

IMG_5323.jpg

IMG_5330.jpg

IMG_5331.jpg
 

Hickboy727

Newbie
Joined
Mar 19, 2009
Messages
7
I've just finished an install with a body off 351w with WH Extreme motor mounts and a serpentine setup, also AX15 WH Xmember install. The block is 1970. I had NO issues with clearance of the pulley, fit nice actually. My problem was getting the motor mounts to fit, the drivers side (I had to grind the mount to get a flush fit the block) the biggest issue I had was to get the tail of the tranny mount to line up far enough away from the drivers side slots in the Xmember. I had the motor on a lift still and could not clock the motor enough with the mounts hitting far front on the passenger side on aft on the drivers side. I ended up grinding the V shaped holes to let the motor mount not to be stressed with a pry bar. Am i missing something?
 

Green_Bastard

Full Member
Joined
Jan 4, 2014
Messages
257
I've just finished an install with a body off 351w with WH Extreme motor mounts and a serpentine setup, also AX15 WH Xmember install. The block is 1970. I had NO issues with clearance of the pulley, fit nice actually. My problem was getting the motor mounts to fit, the drivers side (I had to grind the mount to get a flush fit the block) the biggest issue I had was to get the tail of the tranny mount to line up far enough away from the drivers side slots in the Xmember. I had the motor on a lift still and could not clock the motor enough with the mounts hitting far front on the passenger side on aft on the drivers side. I ended up grinding the V shaped holes to let the motor mount not to be stressed with a pry bar. Am i missing something?

I have a 94 351W and had to grind on the WH extreme mounts to get them to sit flush as well but if I remember right the instructions say that it may be necessary.
 

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
49,242
The block is 1970... My problem was getting the motor mounts to fit, the drivers side (I had to grind the mount to get a flush fit the block).

Wow Hickboy. I think that's the first time I've heard of someone with an old block having the issue. Sorry you experienced that.
You too Green Bastard, but with your '94 that's right in the area of question about grinding, so was almost to be expected, like you said. But still interesting to get feedback.
We ran into it first with (only some) late model 302 blocks. Which probably means that some late model 351's have the issue too, but a '70 model? Did you happen to take some pics of the problem? Or of your fix?
Again, sorry you were not able to use the parts as delivered. Be very interested in hearing any details you have.

The biggest issue I had was to get the tail of the tranny mount to line up far enough away from the drivers side slots in the Xmember. I had the motor on a lift still and could not clock the motor enough with the mounts hitting far front on the passenger side on aft on the drivers side. I ended up grinding the V shaped holes to let the motor mount not to be stressed with a pry bar. Am i missing something?

I don't think you're missing anything. But what you're saying is that you had to notch the slots in the engine towers forward-and-back so that you could move the transmission over? Or was it more in need of moving the transmission rearward on one side?

We certainly had our issues with the NV3550 mounts to a year or two ago (probably the same, or a very similar crossmember as the AX), but they were theoretically resolved when A/A made some changes to the holes (notching and elongating where needed) that supposedly helped that.
Since then I haven't seen mention of the issue here, or heard anyone at the shop saying they had any customers with any issues.
Again, got any pics?

There are several possibilities of course. Defective parts, bent frame, simple tweakage from removing and replacing so many things. But the first suspect has to be the new parts so that we can be sure it doesn't keep happening.
There will always be EB's that, once you remove the stock crossmember, don't seem to line back up just right. Members here have run into that just re-installing their stock stuff. But if you add all of that together, along with a part that was manufactured slightly off, and you get a real headache.

Probably too late to take measurements, and you did get it together (congrats on that!) but it sounds like it was more work than you should have had to go through.
And the same for the motor mounts. Again, sorry about that.
Very interested to hear more.

This was a discussion more about the Explorer brackets and our motor mounts, so a bit off-topic perhaps. If it gets too involved we can carry on the conversation elsewhere. In the meantime though I think we can add a couple of extra posts to this thread without getting yelled at by the others.
Might end up being pertinent at least partially anyway.

Paul
 
Top