Stewart's 67 MGB GT

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Stewart
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Re: Stewart's 67 MGB GT

Post by Stewart »

I have the same stuff on my daily driver and it does make a significant difference when you're exposed to direct sunlight. Really cuts down on the heat you feel from the sun hitting your skin which in turn cuts down on the need for ac. Also keeps the car noticeably cooler when when you get in the car when it's been sitting out in the sun.
Stewart
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Re: Stewart's 67 MGB GT

Post by Stewart »

Car passed the acid test though having to drive like a little old lady sucked. No rubbing wheels on the back which was a nice change from the 75.
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

Me thinks a silver MGB is going to collect a lot of cobwebs.
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Re: Stewart's 67 MGB GT

Post by Stewart »

Steve Simmons wrote:Me thinks a silver MGB is going to collect a lot of cobwebs.

It might as the 75 feels anemic compared to the 67 and I haven't really opened up the 67 yet.

Starting to finish up the odds and ends and found a job worse than a roadster windshield. Changing the oil pressure relief valve in situ. What a pain in the butt it is to get a single nut back on the engine block. The engine builder forgot to install the shim so the oil pressure while ok wasn't quite what it should have been for a fresh engine. Sad thing is I saw the shim in the box of parts I got back from the builder and unfortunately it didn't click at the time that it was an actual part. Now it's back at 75# where I would expect it to be. Fortunately since I had to take off the supercharger and the exhaust manifold I was able to catch and fix a pair of leaky tappet cover bolts before they made a mess.

Next up suspension
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Re: Stewart's 67 MGB GT

Post by Stewart »

Does anyone happen to know what the thread size of the radiator drain petcock is? Stupid thing has sprung a slow leak and moss is fresh out of valves.
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

Being a Mark I car, my first thought would be a BSP thread. But I wouldn't be surprised if it was SAE also since I've seen plenty of new style drain cocks installed. Then again, the threaded bung could have been replaced on them.
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Re: Stewart's 67 MGB GT

Post by Martin Keller »

Stewart wrote:Does anyone happen to know what the thread size of the radiator drain petcock is? Stupid thing has sprung a slow leak and moss is fresh out of valves.
Hi Stewart,

You might want to try your local hardware store as the drain valve for an air-compressor should work as that is what I have used in the past on an MGB when I stripped the butterfly handle on the stem and could not get it to stop leaking because the seat was buggered up.
Here is a link to what Lowe's caries and it is only $3.98 and brass.

http://www.lowes.com/pd_221037-47120-SG ... facetInfo=

Hope this helps.
:drive
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Re: Stewart's 67 MGB GT

Post by Stewart »

Well I know what it's not. Definitely not 1/4 bsp I think your right Martin and it's 1/4 npt. Next time I run to the hardware store I'll bring the old valve with me and get the right plug.
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

That's good news. Any radiator shop or auto parts store should have a draincock then.
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Re: Stewart's 67 MGB GT

Post by Larry Kluss »

Stewart, Pipe thread can be easily identified by the tapered threads. Any other thread will be straight.
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Re: Stewart's 67 MGB GT

Post by Stewart »

Well this cant be good. Got off the freeway and with the clutch in turned off the overdrive came to a stop (short off ramp) shifted into first went to creep forward a bit (inline at a stop sign) had a loud clunk/bang/jerk from the car and since that point overdrive is hasn't worked. So far the electrics are good and working, oil level was good. Drained the oil and no visible metal. Getting ready to pull the filter once I remove the heat shield that I just put in. Anything else I should look at since I'm down there? D type overdrive.
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Re: Stewart's 67 MGB GT

Post by Stewart »

$!#!!$#@!$!$@!%$!!$#%!@#!!!!!!!!!

Found this in the filter anyone have a clue what this is?
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

Oh my. Is that the relief valve? It's been so long since I was inside anything but an LH that I can't remember what the D valve looks like. In any case, you should be calling Quantum tomorrow. That ain't normal!
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Re: Stewart's 67 MGB GT

Post by Stewart »

Well talked to quantum and they are stumped. I guess I better hurry up and get the garage organised for the fun that is about to happen.
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Re: Stewart's 67 MGB GT

Post by HealeyBN7 »

Stewart,

Having just rebuilt my overdrive, I thought this was an easy one. But, after looking through all the exploded diagrams (a and d type) I came up with the same face as a 17 year old counter worker looking up parts for a Warwick.

If Quantum came up blank, that is just downright frightening. FOD is what we call this stuff in my industry. How it gets there can consume a full career. The search might lead to other items on the workbench that have nothing to do with the OD at all.

Keep us posted. Sorry I couldn't help. Good luck!

Dean
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

Do we need a "help Stewart pull his engine" day?
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Re: Stewart's 67 MGB GT

Post by HealeyBN7 »

Sounds like a good excuse to head to Santa Barbara. :)
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Re: Stewart's 67 MGB GT

Post by Stewart »

There might have to be. While I'm waiting to hear back from quantum it's full speed on getting the garage in shape which I've been putting off for to long.
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

I'll help if I can. Kind of busy with work these days, and I have an engine to pull myself, plus a blown head gasket on the supercharged engine, and a mystery problem in the GTS engine. When it rains, it pours! But it would be nice to take a short road trip to see someone else's problems for a day. :)
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Re: Stewart's 67 MGB GT

Post by Stewart »

Steve you're in danger of running out of cars.

I'll post up if I do have to pull the engine. I'm going to check the oil pump and anything else I can look at from under the car before pulling the motor. Actually pulling the engine isn't to bad putting it back in on the other hand. I've come to hate fresh paint when it comes to things like this.

The garage is finally getting into shape so at least that's a positive.
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Re: Stewart's 67 MGB GT

Post by Stewart »

Well this gets more interesting. I found this when cleaning up the oil that leaked from the filter housing over the last few days.
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

What the heck? I have a spare D-Type gearbox here if you want to tear it apart and figure out where this stuff fell out of. Regardless, I've never seen one come apart like this.
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Re: Stewart's 67 MGB GT

Post by Stewart »

Might have the answer

Talked to john at quantum and the second part is the plunger for the operating valve. The theory is that the plug that holds it in loosened and fell out. The problem is that valve is on top of the overdrive unit and not accessible unless you have small hands so it's looking like the engine is coming out. Fun fun fun
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Re: Stewart's 67 MGB GT

Post by Stewart »

And that theory may be wrong. Once the underside bits were removed there was enough room to get my hand up there and it sure feels like there is a plug. Hopefully tomorrow I'll have all the topside bits off and clear of the car and the engine ready to pull on Wednesday or this weekend.
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Re: Stewart's 67 MGB GT

Post by Steve Simmons »

I'm probably available this weekend to help. And I need a few parts from Moss so I see two birds need killin'.
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