Mac Whiddon's Journal

DuckMav Mac Whiddon
Mac Whiddon  
Fort Worth, USA

Total Posts: 2 Latest Post: 2008-05-27 13:32:29
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More About Dan's '71 Of Many Colours

Mac Whiddon — Posted on The MG Experience
Tuesday May 27, 2008 1:32 PM
Today I finally got Dan's car back on the street, drove about 5 miles in and around Dan's neighborhood in Fort Worth. It turned out to be a gap of only .010" to get the desired dwell of 80. It idles and runs smootly at low throttle, but I'm getting carb backfire if I give it much gas. I just added a Weber 32/36 DGV downdraft carburetor, intake manifold, linkage & air filter and suspect it may need leaner jets


Part of the brake rebuild Brembo Rotors

Part of the brake rebuild - Brembo Drums




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Comments on Journal Entry: More About Dan's '71 Of Many Colours –

Comment by Mac Whiddon at 2008-06-20 19:25:29
Well, it wasn't the jets. The problem was the distributor. Some previous mechanic (PM) put non-standard parts in the distributor, a couple of screws that were about 1/4 inch too long, so they rubbed against the springs of the advance unit. This is a 25D4 distributor. (My '79 has a 45DE4, which means the extra Pertronix Ignitor kit I had for the '79 would not work in the '71.) When I did the dwell test with an analyzer, it indicated a possible grounding problem, so I ordered a new breaker plate ground wire and a new low tension lead from Gordon at the "B Hive." I was disappointed that the new parts didn't make a difference, but upon disassembly of the distributor, I found the long screws. Finally, all seems to be better. Next, we need to look at a better exhaust system for Dan's '71. Like the rest of the car, the pipes and mufflers have been quietly deteriorating and rusting under the tarp for about 15 years.

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Trying To Go From Good To Better

Mac Whiddon — Posted on The MG Experience
Sunday April 27, 2008 6:02 PM
It's obvious Cecil spent a lot of time, effort and money making this car very nice. You can see from the pictures what a good job he did on the interior, for example, and look at the Dayton wire wheels! Anyway, my purpose is to try and make incremental improvements.

Yesterday I put new under-dash liners in. I had forgotten how ill-fitting the stock parts were, but at least now it has a hard plastic shell and won't deteriorate like the old cardboard ones did.

The liner under the passenger (r) side fit ok. The left one, I had to add a bracket to hold up the corner of the panel away from the bonnet release. Also, it helps to put a couple of 3/4 inch notches in the edge so it will fit under the plastic cowling of the steering wheel.


L underdash

L underdash




Comments on Journal Entry: Trying To Go From Good To Better –

Comment by Mac Whiddon at 2008-05-08 12:51:34
Another day, another minor saga. I have been working on my friend Dan's '71 MGB roadster. (Actually, working on Dan's car is what got me back into MGs, when I discovered how reasonable and available parts are now, compared to how it was in 1969 when I could not get any parts for my 1966 B.) Today's task was to put a new high torque reduction gear starter in for the old stock starter that was making a horrible grinding sound. I just knew the old starter was going to destroy the ring gear, so I ordered the high dollar, high torque starter. I was surprised how small the new unit is. I was more surprised how hard it was to get the huge old starter out past the distributor, oil filter and oil cooler hoses. Honest, it seemed easier to take it out upwards than to drop it down. Anyway, it's in now, spins the engine much faster and as far as I can tell, there was no damage from the old one. Now, I am listening to my own starter and wondering when I'll have to repeat the same process. Is this boring or what?

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