Tuesday, August 17, 2010

Finally got the wheel off!!!

  • Replaced steering wheel with Nardi wheel
  • Resolved another Leyland mistake: that hideous rubber covered steering wheel
  • Gained access to turn signal/ light control
  • Much easier removal of dashboard (to fix lights and such)
Finally, after MONTHS of trying, I was able to get that horrible Leyland style rubber steering wheel off! Well, it wasn't me as much as it was a colleague of mine who also happens to have an interest in classic cars.

I tried various tools: hub pullers, hammers, tons of penetrating oil, a puller I made like the one from Moss (which sells for $50), etc, but all to no avail! In fact, conventional wheel pullers will not work with this car. Rather, the remedy was simply persistent pushing and pulling the wheel from side to side. Just keep working the wheel gently. Don't use a hammer (I managed to damage the threads doing this). It took about half an hour, but in the end the damned thing came off! Despite drenching the thing in Deep Creek, hardly any of the oil had actually gone down far enough to actually loosen up the splines.

I can't take credit for the work, I'm not patient enough to do anything like that. All credit should be directed to my colleague and future car collector, Matthias (see picture).

So basically: trying to take the steering wheel off? Forget about buying anything! Nothing works. Trust me, I've tried it all. I even bent the old wheel in the process.

Sunday, March 21, 2010

And We're Back

The 100 feet of snow we had this winter wasn't enough to collapse the old bird. However, when I went to take a look at it today I realised my first task was going to be a spot of gardening. Here are the before and after photos:


There was A LOT of bamboo all over the place. Amazingly the roof was still intact, despite numerous branches having fallen on it. The roof was not intact after I accidentally poked through it while removing a branch.

Next week I hope to do some real work...

Tuesday, March 9, 2010

University Motors is Back!!!

John Twist recently posted that University Motors is back in business:

As I pondered my future, I could not escape the undeniable fact: MG is my destiny. We are now re-awakening University Motors.


Read the full post here: http://www.mgexperience.net/phorum/read.php?1,1377891

Friday, December 25, 2009

Wednesday, November 18, 2009

Fudge values and bearings

  • Correct bearing tightening instructions
  • Brakes work again, even when turning
  • No wheel wobble at high speeds
  • Greatly reduced chances of dying

I strongly believe in the value of fudging values from time to time. 5 ft/lbs? Finger tight! 0.05mm tolerance? Finger tight! 32 PSI? Yup, finger tight!! Please note that I am not an accountant, and do not work in the finance industry (where a lot of 'value fudging' goes on as well, I imagine...).

Unfortunately this does not always work. Bearings, for example, are an example of one of these situations. I learned that this week when the brakes on my XJS stopped working every time I made a hard left or right.

I recently changed the bearings on the XJS, but followed my usual method of tightening the end nut: finger tight plus a turn of the wrench. Generally that's good enough (as it seems to be for the MG). Tightening too much leads to premature wear of the bearings, and that lovely grinding noise you sometimes hear on old cars. Too loose has never been much of a problem, so I didn't think too much of it.

Well, I was wrong. Turns out the XJS needs a full 25 ft/lbs on the end nut (as pictured above, on the MGB, before pin removal), backed off one flat (and more if necessary to fit the pin back in). After adjusting this the brakes returned to normal, and high-speed driving stabilised a bit. Turns out the nut was loose enough to let the rotors move around enough to push back the brake pads, but only when the wheels were turning. So really the brakes were working fine, it's just that they had to be reset each time I made a turn.

So:
Here are my general bearings instructions (for the MGB and most cars that aren't Jaguars):
  • Tighten the end nut to 5 ft/lbs while turning the wheel. If you hear grinding or anything like that your bearings may be bad, or some dirt may have entered the hub. Clean the hub and make sure you pack it with (clean) grease.
  • Loosen if necessary to enter holding pin
  • Reassemble the wheel (keep it jacked up).
  • Check for wobble by holding the wheel on the top and bottom and try to make it wobble. Then hold the wheel on the left and right, and do the same. If you feel any wobble or anything that seems too loose, tighten the end nut a bit, and recheck.
  • If everything seems right, take your MG out for a ride. If you do not notice the same or better performance, something is wrong (duh, this counts for anything I guess...). The best speed, in my opinion, to find problems is around 70 mph. Good luck.

Mind you, despite the bad braking and wheel wobble I still did a 400 mile road trip at 80+ mph speeds....

Wednesday, October 28, 2009

My new toy

Regular readers will have noticed that I haven't been posting much lately. I can now reveal why, which I will do with the following video:



Initially I tried to make something that looked as exciting as a Top Gear segment, unfortunately it turned out as drab and dreary as a MotorWeek episode. Probably mostly due to my anything but engaging tone of voice, and due to my budget for this being on par with a typical MotorWeek episode. I hope you did notice that, unlike Motorweek, I actually had cool cars, and dared to make negative comments (that didn't refer to daily driving issues).

So that's what's been keeping me busy for the past month.

Sunday, October 18, 2009

Carburettor Madness Part III (bright orange exhaust)

  • Further fine-tuning of the Weber DGV carburettor
  • Adjusted timing at the same time
  • Removed air-intake heating
  • Exhaust manifold does not glow orange anymore
  • No more vapour-lock
There are many sceptics on the performance of the Weber DGV (in fact, only hours after posting this I already got a nasty comment, see the comments section for this entry). It's often called inefficient, not performance-driven, needlessly complicated. Many 'other' MG owners swear by their SU's. I think I've even heard of someone liking their Zenith!

Well, they're all wrong. Completely wrong, in fact. The Weber DGV is a fantastic carburettor. It was not specifically designed for this car, so odds of it working right out of the box are often tiny (versus an SU that would probably work right away). However, online retailers are selling kits specifically tuned for your MG (Moss, Brittek, etc., see links on right) that make tuning much easier. You may even be able to take your MG for a spin the same day you install it!

For others, such as myself, who bought an MG with a Weber already fitted, you may find yourself in a bit of a bind, trying to figure out how to undo what others did. My Weber was set to over-rich, compensating for bad plugs and a clogged exhaust. My horrible rebuild attempt did nothing to improve the situation; throw in the new Peco exhaust and you've got a recipe for disaster I only overcame yesterday, about 4 months later (on and off, mind you).

That's where the internet comes in handy: through fora and blogs such as this one, we try to make owning an MG pleasant for other people so they don't have to deal with the same non-sense we had to. (Unlike Jaguar owners, I might add, who for whatever reason are part of some tightly knit club. How do I know this? Stay tuned...) So when in trouble, my recommendation is to search the internet.

Update 3/11/2010: OK, so I was being a bit harsh on the Jag people. Though I still think they are a very different breed to MG people, most are very willing to help newcomers. Being a Jag/MG person myself I am always ready to help a fellow Brit-car enthusiast.

My main point today is that it is crucial to set the timing right (about 14 BTDC for a Weber DGV) to make everything come together. Bad timing could be one cause of misfiring or backfiring (where the explosion happens too late, and ends up in the exhaust manifold). The mixture on my DGV was set properly, but the exhaust manifold glowed orange. Checking the timing, I noticed it was set to 5 BTDC. Resetting it to 14 fixed the exhaust problem.

Another problem I've been having lately is that after running for a while and stopping, the car would not start up again. All signs pointed to not enough fuel reaching the carb. The pump was working and the filter was full (one of those stupid clear Lucas filters actually came in handy for once), but the fuel kept evaporating when it hit the bowl. Without manifold vacuum that vapour was going nowhere. My solution was to get rid of the hoses used for intake heating (plugged them up with a bolt), which dramatically reduced the temperature in the bowl so fuel would stay liquid. The intake heater is a fuel-economy thing that I do not think really necessary. I may attach it again in the heart of winter.

So:

Bright red exhaust manifold?
  • Mixture too rich
  • Timing too retarded (advance to 10-14 BTDC)
Misfiring?
  • Mixture too lean
  • Timing too advanced (retard to 10-14 BTDC)
It's that simple. Please see my other posts (click 'carburettor' on the right) on fine-tuning the Weber DGV.

Also I passed my qualifier exam!

Wait, what's this??? :
More very soon...