Bruno Devuono's Journal - Page 1

bdev Bruno D
Bruno D  
Orange County NY, USA

Total Posts: 12 Latest Post: 2010-01-31 17:39:36
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Tutorial On Spline Drive Wheel To Bolt-On Conversion

Bruno D — Posted on The MG Experience
Sunday January 31, 2010 5:39 PM
Converting MGB spline drive (wire wheel) to bolt on.

I’ve recently converted my 1967 MGB/GT, Salisbury axle, from spline drive to bolt on (disc wheel).
For those that might want to make the conversion, below is a detailed procedure.

You will need the following parts to do the job.

A set of front and rear original MGB 4 bolt hubs. Bolt pattern is 4”x 4.5”.
These are NLA so you’ll need to source a good used set. Try eBay.
2 Grease caps. Moss part #264-515 (if not with the used hubs)
4 brake drum retaining screws. Moss part #323-255. (if not with the used hubs)
Your existing front bearing parts (if in good shape…if not…buy new).
8 metric wheel lugs. 12mm x 1.5 (2.5” long)
8 metric lug nuts (12mm x 1.5)
8 standard lug nuts (1/2-20)
2 rear wheel spacers.
New cotter pins.

Rear Hubs
The original rear lugs will be too short and need to be removed. The metric size is 12mm x1.5 (2.5” long).
You can buy either ARP 100-7708 or Moser 8255. Either will work and you can buy them from Summit Racing.
[www.summitracing.com]
[www.summitracing.com]

The metric size is the only lug that is a direct swap for the original.
The original lugs need to be either hammered or pressed out.
My small sledge hammer had no problem removing them.
If you don’t have a press you can “pull” the studs on using an opened end lug nut.
Tap the stud into place to get it started. Place the hub in a vice and turn the reversed lug nut (conical side facing away from the hub) until it makes contact with the hub face. Keep turning and it will pull the stud into place. Remove the nut.

The rear swap is straight forward. Just remove the cotter pin and axle shaft nut (1 5/16”) and pull the wire wheel hub off. There is a split axle shaft collar behind the nut that comes out with the hub. You’ll need this for the new hub.
It’s a good idea to spray some PB blaster or a good penetrating lubricant on the nut before trying to remove it. Let it sit for about one hour before removing.
The torque spec for the axle shaft nut is 150 ft/lbs so you’ll probably need a heavy duty breaker bar to remove it (I’m assuming you don’t have an impact gun).
Note: Because the nut is recessed within the hub, some sockets will not fit the opening.
I was able to find a six sided metric socket that fit (34mm). The metric size is slightly larger than 1 5/16” but it works fine.

Front Hubs
The front hubs can be used as is but the lug threads are ½”-20 which is the stock MGB size.
This is OK but you’ll need metric lug nuts for the rear and standard for the front.
Summit racing sells both sizes of matching lug nuts.
If you want to use metric all around, just buy 16 studs and change out the fronts. The fronts will be a bit too long and will need to be cut back about a ½”…..if you’re using closed end lug nuts.

To remove the front hub…..
Remove the brake caliper off the rotor. There’s no need to remove any of the brake hydraulic lines or pads. Just remove the caliper and hang it off to the side using wire or rope. DO NOT let it hang from the rubber hose. Wedge a piece of wood between each set of brake pads.
Remove the internal grease cap (if fitted).
Remove the cotter pin and axle nut (size is 1 1/8”).
Remove the keyed washer followed by the outer bearing (a few shims should come out with the outer bearing).
Now slide the hub off (the rotor is bolted to the hub and will need to later be removed and bolted to the new hub).
On the backside of the hub is a rubber oil seal that needs to be carefully pried off. If it’s in good condition it can be reused. If not, order a new pair from Moss (part #120-610).
Now remove the inner bearing followed by the spacer.
Please note that there will also be a metal oil seal collar that fits between the rubber oil seal and the radius of the spindle.

When installing your existing bearings to the new bolt on hub, see your manual for the proper procedure. Use a new cotter pin. Fasten the rotor onto the hub before any bearing work.


Spacers
Since the wire wheel axle is about 1.5” shorter than the bolt on, you’ll need 2 spacers for the rear wheels. This allows your tires to clear the inner fender wall.
The size of the spacer depends on the tire size you’re using AND the wheel offset.
Figure somewhere between .375 & .500 inch. Bolt pattern is 4 x 4.5 (114.3mm).
Since my rear axle is slightly offset to the left, I used a ¼” spacer for the left but needed to use a ½” spacer for the right. Using a ¼” spacer on the right side positioned the tire too close to the inner fender wall.
You can find spacers on ebay or buy them from Summit Racing.

I purchased Superlite 14 x 6 from Hap Waltrop (Acme Speed Shop) and they are sized for the MGB. Tires are 175/70/14 ( I bought this size because I was originally using wire wheels but will go with 185/70/14 in the future).
[www.acmespeedshop.com]

Good Luck.



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Alternator Upgrade

Bruno D — Posted on The MG Experience
Saturday April 26, 2008 5:33 PM
4/26/2008...Installed a new 96 amp alternator. Kept the old one and set it up as a drop in spare...just in case.


100 0897

100 0897

100 0896

100 0896

100 0895

100 0895

100 0893

100 0893




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Recap 2007 Into 2008

Bruno D — Posted on The MG Experience
Saturday April 12, 2008 2:17 PM
It's been over a year since I've written in this journal so i'll do a quick summary.

2007
Installed new carpet set from Prestige.
Bought a better recessed grille from Mike Joy and installed it.
Brought interior back to 1971 specs.

April 2008
Removed entire rear end and painted.
Replaced thrush washers and pinion washers.
Rebuilt rear brakes.
New e-brake cable.
New leaf springs and hardware from Brit-Tek.
Installed new Moto-Lita wood wheel.
Replaced AAE needles with AAU.


pinion gears

pinion gears

Diff pic 4

Diff pic 4

Diff pic 5

Diff pic 5

Moto Lita wheel

Moto Lita wheel

interior finished side view

interior finished side view




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Interior Planning, Fish Mouth Grille

Bruno D — Posted on The MG Experience
Monday January 29, 2007 4:36 PM
It's the end of January and plans are underway to replace the carpeting and remove the center console. I've requested samples from TRF and Prestige and will make a decision based on color. TRF's prices are higher but if the quality and color is better than Prestige, I'll go with them. The hardtop is installed and I've been driving mostly each weekend to keep the car rolling through the winter. We've had no snow yet so it's been great. I'm also going to re-install my original fish-mouth grille as I want to keep my car as '71 as possible.


Hard Top rear view

Hard Top rear view




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K & N Filters, AM Radio

Bruno D — Posted on The MG Experience
Friday September 1, 2006 12:10 PM
Wow..haven't posted in my journal for a while. Nothing major to report but I did change to a K&N air filter set up. Picture attached. The picture is not from my car but it's the same set up. Also bought an original AM radio and installed it. Having a static noise problem but I'll get it fixed.


K N filters

K&N filters




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Fixed Speedo, Chrome Grille, Pertronics

Bruno D — Posted on The MG Experience
Wednesday June 14, 2006 8:08 PM
6/14/06
Wow...it's been awhile since I posted an update. I fixed the speedo problem by disassembling and cleaning my original. I now have a spare just incase anything goes wrong with my original. I bought an overdrive speedo cable and eliminated both angle drives. Seems the problem is solved....for now at least.
Changed over to the old type chrome grille. Car looks great with it. Also installed a Pertronics Ignitor and Flame Thrower coil to replace the points system.
Installed remote bonnet release and repaired the left turn signal cancelation switch.


pic taken 6 10 06

pic taken 6/10/06

MGB new grille 1 JPG

MGB new grille 1.JPG




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