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Southern Class & Sass
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I think we lost something along the way.
I looked at those twin SU carbs, and tried to remember how they work. I couldn't remember much. Sure, my daddy and I rebuilt a pair, but that was fifty years ago. Standing there I realized I was had likely let my mouth write checks my memory couldn't cash.
Wyatt isn't a car guy, but he has an old Spitfire. Judging by the dust covering it I'd guess it was last started well over a year ago. Yesterday, inspired by my tales of automobiles past, Wyatt decided we should remedy that. So we checked the oil, the coolant, and hooked up a new battery. Wyatt turned the key. The motor turned vigorously, but refused to start. That's when I looked at those carbs and realized things were close to exceeding my ability. Worse, I might have to get dirty, and surely break a nail or two. Oh the horror! Remembering that the piston in the carbs is somehow connected to the jet needles, I picked one up a bit. Wyatt turned the key. It started, eventually settling into a rough idle. Our success made me miss a time when cars where simple. A time when you knew how things worked by simply looking at how they fit together. A time when you could verify there was gas in the tank using a stick. A time when even an old cowboy, and an old rose, could get a dormant car running again.
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Dixie Bradenton, FL 2013 Camaro ZL1 Last edited by Dixie; Yesterday at 07:25 AM.. |
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The good ol' days!
Back when the owners manual included instructions on how to do a valve adjustment. As compared to a modern owners manual that reminds you not to drink the battery water.
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Mike “I wouldn’t want to live under the conditions a person could get used to”. -My paternal grandmother having immigrated to America shortly before WWll. |
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Yep, gotta check the oil in those dashpots, they'll get ya every time.
You and Wyatt wanna work on a TR6??? Sent from my SM-S916U using Tapatalk
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"A little nonsense now and then is relished by the wisest men." Wonka |
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I worked on a set of SU's Saturday! And? The car didn't start. Yet.
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Southern Class & Sass
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Quote:
As the saying goes, men's ability is in lifting heavy things. Women's ability is in getting men to lift heavy things.
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Dixie Bradenton, FL 2013 Camaro ZL1 |
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Sent from my SM-S916U using Tapatalk
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"A little nonsense now and then is relished by the wisest men." Wonka |
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Next level is standing here looking pretty as the men hand you drinks between lifting heavy things!
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1989 3.2 Carrera coupe; 1988 Westy Vanagon, Zetec; 1986 E28 M30; 1994 W124; 2004 S211 What? Uh . . . “he” and “him”? |
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I had carb cars from age 16 to age 19 when I bought my 74 914 2.0. Fuel injection is superior in all respects except maybe visual with the 6 one barrels of a early 911.
Then in 1991 I bough my El Camino. It had a Rotten-chester carb that never ran very well. Lots of hesitation, and cold weather starts really sucked. I even visited the local "carb guru" and had him rebuilt it, tune it, and install it. It still would bog down when trying to cross a busy road, nail the throttle and sit in fear as it coughed though about going and finally it decided to go. In 2011 I had enough and built my own cobbled together throttle body system. Most of it came from a S-10. I had to find "a guy" to burn me a custom chip to work with my engine - transmission and engage lockup only in 4th gear at 50 MPH and above. For the last 15 years it has been virtually flawless. I had to replace the throttle position switch which cost about $25. It did not have the Porsche tax. Carbs are neat at WOT to hear the intake scream.
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Glen 50 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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Quote:
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What's an "old rose?"
Never understood the vacuum controlled dash pots of an SU carb. Wired to the throttle as on a motorcycle makes more sense to me. Therefore, sounds like Wyatt's car has some compression issues as in not enough intake manifold vacuum. I suffer this on a SBC with a big cam. The overlap kills the vacuum at starting revolutions.
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Comment below and don't forget to like and subscribe. |
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We can open jars, too!
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"I would be a tone-deaf heathen if I didn't call the engine astounding. If it had been invented solely to make noise, there would be shrines to it in Rome" |
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They never consider the possibility that they could do it themselves if they just used the right tool. I think their mothers trained them that way.
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Having spent many hours with the carbs on my 65 MGB, I have a fondness for twin SU's. If the throttle shafts and bushes are not worn and leaking air, they work well. And, are easy to tune. Me? I was broke and my carbs were shot. So I spent lots of pointless hours with them!
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Southern Class & Sass
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Quote:
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Dixie Bradenton, FL 2013 Camaro ZL1 |
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Spitfires came with ZS. Someone swapped them puppies…
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Southern Class & Sass
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Since you're a Spitfire expert, okay. My extremely limited understanding is only the later years came with SZ carbs. Then again, I'm not even sure what year Spitfire Wyatt owns. Maybe they're swapped, maybe they're not. I'm just hoping you'll explain how this nuance is relevant to the story?
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Dixie Bradenton, FL 2013 Camaro ZL1 |
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It wasn't. It was an observation is all.
Why not take the chip off your shoulder - you'll feel lighter for it. |
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The good ole days. More like the bad ole days. I hated working on SUs. The stupid needle dropping out etc. Bless fuel injection I say.
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I remember synchronizing the carburetors on my Triumph and Z cars. I still have my synchronizer, but it’s gone the way of the dwell meter, etc. It hasn’t been used in ages.
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