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Old 12-28-2012, 03:26 PM   #21 (permalink)
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I know this is an old thread, but I'm looking to buy a manual CRX same year from 1984 on Craigslist right now. There are 6 different kinds of CRX's on fueleconomy.gov for that year. How do I tell which one it is? Can you tell from just the VIN number alone?

A separate note, the car passed smog beginning of this year but recently failed smog. Should I be worried about that? What's the worst expense that might happen? A new catalytic converter? Could I manage an old used or junkyard one?

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Old 12-28-2012, 03:47 PM   #22 (permalink)
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The 1335 is a cvcc engine, you can advance the ignition timing to get better mpg. I put one in my 77 accord and got 50 mpg. Nobody need more projects, but this project needs you! The valves just might be sticky from sitting 10 years. Maybe you could twist them around a little with some pliers to work them loose and get them to seat.
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Old 12-28-2012, 09:59 PM   #23 (permalink)
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Quote:
Originally Posted by AaronMartinSole View Post
I know this is an old thread, but I'm looking to buy a manual CRX same year from 1984 on Craigslist right now. There are 6 different kinds of CRX's on fueleconomy.gov for that year. How do I tell which one it is? Can you tell from just the VIN number alone?

A separate note, the car passed smog beginning of this year but recently failed smog. Should I be worried about that? What's the worst expense that might happen? A new catalytic converter? Could I manage an old used or junkyard one?
In my 1984 Civic/CRX brochure, there is a:
CRX manual (1.3L)
CRX 1.5 manual
CRX 1.5 auto
And a California version of each. I guess that makes 6. The 1.5 liter engine will say "12-VALVE" on the valve cover.
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Old 12-29-2012, 08:59 AM   #24 (permalink)
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The 12 valve engines get better mpg when one of the intake valves is disabled, by turning the rocker arm upside down.
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Old 12-29-2012, 10:06 AM   #25 (permalink)
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I had an '84 Accord, so I know all about the spaghetti! Most of the time it ran beautifully, but, when the spaghetti acted up, it would sputter and cough. One day I nursed it home, got out and noticed a glow on the ground underneath. Yikes! Cat got a little bit warm.

Would love to have one of those first gen CRXs, but only if I could make all that spaghetti BS go away. Fortunately they are over 25 years old, which exempts them from emissions. Is there a way to get rid of all that garbage? Maybe an aftermarket weber? Would that harm FE?
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Old 12-29-2012, 10:40 AM   #26 (permalink)
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Quote:
Originally Posted by pete c View Post
Would love to have one of those first gen CRXs, but only if I could make all that spaghetti BS go away. Fortunately they are over 25 years old, which exempts them from emissions. Is there a way to get rid of all that garbage? Maybe an aftermarket weber? Would that harm FE?
Getting rid of the 52 vacuum lines is a great way to destroy the engine, the CVCC engine doesn't have the spark plug in the normal combustion chamber, it's in a little "pre-chamber" that is fed by the 3rd barrel on the carb, it also tends to have an o2 sensor that controls the carb via vacuum lines, it has deceleration fuel cut off that is controlled via vacuum lines, it has a factory warm air intake that is controlled via vacuum lines, there is not a single vacuum line that I can think of that does not help it get better mileage, help it run better or help keep it from running lean and damaging the engine and in the 3 cars with CVCC engines that I've owned, I only found one vacuum line issue and that was caused by me messing around with them
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Old 12-29-2012, 10:55 AM   #27 (permalink)
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Quote:
Originally Posted by AaronMartinSole View Post
A separate note, the car passed smog beginning of this year but recently failed smog. Should I be worried about that? What's the worst expense that might happen? A new catalytic converter? Could I manage an old used or junkyard one?
I would start with a tune up and a new o2 sensor and unless you find a shady junk yard, they are not allowed to sell used exhaust parts.

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