Know your car

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jmvv
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Know your car

Post by jmvv »

I had the opportunity to get a customer's Beetle into the shop for a disc brake conversion.

The car looked all spiffy in it new coat of dark red paint, but it sounded horrible. I contacted the guy and asked him if we should replace the exhaust, as it was way past salvageable.

"Yes, please, but just make sure that it is quiet as I hate a noisy car, and check the performance as old ladies in even older Beetles leave me standing from the robots"

So I found him a Bosal exhaust, complete with new pea shooters - that took care of the noisy exhaust.

Turnig my attention to the engine, I found the no 3 plug wire pulled off and the timing advanced to about 12 degrees.
No wonder that old ladies would beat him from the robots, as the three cylinder 1200 Beetle never was a rocket :lol:

Replaced the plug wire and reset the timing to 7,5 degrees with the dwell angle at about 48 degrees and changed the cars character completely.

There it was, a nice looking Beetle, that runs strong and sounds like an aircooled VW with the characteristic whistle from the pea shooters on the overrun.

The point I am trying to make is that the owner did not know what a healthy Beetle
is supposed to sound like, so he never noticed the missfire.

And the two previous "mechanics" (professional nogal) don't know their arses from their elbows. If you can service a Toyota, it does not mean that you know anything about our aircooled marvels. You need to be able to do fault finding without a diagnostic tool.
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bugspray
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Re: Know your car

Post by bugspray »

Lol hahaha, that's just wrong. But admittedly, at one point if you asked me to check the water in a beetle, I woulda went and gotten a jug of water.

Dude, what exacly is your business? You do disk conversions, zhorsts and sound instals? So what's the company name etc, yup free plug go for it.
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jmvv
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Re: Know your car

Post by jmvv »

My shop's name is Cellsound. We are based in Centurion

The main business is car audio (Rockford Fosgate / Lightning Audio / MB Quart)

But then I believe everybody is entitled to at least one vice - mine is Aircooleds and seeing as old school (old fool maybe) skills are disappearing, I like to try and help to keep these old beauties running and safe.
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Re: Know your car

Post by bugspray »

Ah schweet man, sounds goode, where in centurion? Might take a drive down there, I'm looking for a set of splits, something entry level but good. What are my options regarding that?
MB Quarts are good the RF range is kinda outta my budget for now. Ultimately I would love a DLS SQ setup. But till I can get that looking to start a system In my bug.
Do you have a price and equipment list you could mail me??

Or even 2nd hand working equipment maybe?
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GavinHuart
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Re: Know your car

Post by GavinHuart »

Hi Jmvv
jmvv wrote:...old ladies in even older Beetles leave me standing from the robots" ... Turnig my attention to the engine, I found the no 3 plug wire pulled off and the timing advanced to about 12 degrees. No wonder that old ladies would beat him from the robots, as the three cylinder 1200 Beetle never was a rocket :lol:
You need to be able to do fault finding without a diagnostic tool.
:shock: I've been wanting a professional to have a look at my car for a while now, trouble is I didn't know where to go and I think I've found just the guy!

I've done all of the adjustments to my car myself all this time; services, valve gaps, timing (gleaned from what I've read in manuals), tuning, etc... but I would really appreciate someone in the know to tell me whether I've been on the right track. Admittedly my car sounds as it should, I'm very sure about that.

The pros are: it starts first time, every time all year round. It idles perfectly. There's a perfect whistle at the right revs from the pea shooters. There is no smoke from the exhaust so I'm confident the rings are still pretty good although a proper compression test could verify that :wink:

The cons: occasionally after a long haul there's the slightest "flat-spot" when accelerating from standstill. I have a very slight backfire on overrun that happens perhaps once in an entire week of driving, but my main concern is I feel the car is dreadfully underpowered. I know it's only a 1200 so I'm not expecting any white-knuckled terror while at the wheel, but I really battle. On the straights it's pretty good but the slightest incline and I'm gearing down to second to make it, teetering between 20-25 mph and sometimes less! In your professional capacity, is this normal?

What are the chances I could run it past you for a bit of professional seeing to?
'62 Bug, '57 Bug, '63 Panel Van & '75 Fleetline.. (O\ | /O) & |o\*/o|
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Klippie
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Re: Know your car

Post by Klippie »

hey jmvw

ha i have a similar problem. but my bug backfires every time i gear down. and its not just i silent one. sounds like gunshots. I got a free flow exhaust fitted and since then it been bacfiring like the brits in ww2. Someone told me i should set my timing. but i have no idea how to do that. any advice?
!!!!enough torque to tenderize an elephant!!!!
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Re: Know your car

Post by dubster »

Ja jmvw i have learned that way to...had a (6= tp and the night we picked it up my dad had a jol in the rain with it...you could see it pulled...the next day when i wanted to drive it it would bearly climb a hill in 2nd...but "knowing" that beetles were slow i thought nothing of it,eventaully it got to bad...eventaully found it was running on 3 cylinder,maybe 2 after a while but its hard to hear 3 cylinders on a bug with trumpets on...same happenend with my new motor dad drove it,screamed like a gremlin,i drive a 55 split bus would have slaughtered me,changed plugs,and actually left two black lines in the drive way when i gave it gas in 1st...id say my tip is if a 1100 bug can beat you in 1500,1600 check your plugs,plugwires first of all...
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jmvv
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Re: Know your car

Post by jmvv »

GavinHuart,

I have followed your thread on your relationship with your car and considering the meticulous care you lavish on it, I would suspect that the compression is not what it should be.

I agree that a compression test would give a true indication of the condition of the engine.

The flat spot you mention could be caused by warm air from the engine bay being drawn into the carb and upsetting the mixture. Air at 50 degrees Celsius is a lot less dense than air at 20 degrees.

I am not promising miracles, but you are welcome to pm me so we can set up an appointment for a Saturday.
jmvv
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Re: Know your car

Post by jmvv »

Klippie, the fact that your car started backfiring after the freeflow was fitted could suggest a few things.

The timing may need adjustment.
The carburettor may need adjustment

The mixture could be way off allowing an over rich mixture into the exhaust on the overrun. This mixture will detonate as soon as the correct air/fuel ratio is reached.

You could have a leaking exhaust gasket (sometimes difficult to detect depending on how "freeflow" the freeflow exhaust is)

On the overrun, air can be drawn into the exhaust system through the faulty gasket and once the air/mixture in the exhaust is right - Kaboom

If you are interested, you can pm me, so we can arrange to have a look at your car. Again, I am not promising miracles, but let's try to sort the problem out.
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Re: Know your car

Post by dubster »

how i test for leaking exhaust is to cover it with my hand or somethings,youlle hear it leaking and if not it wil blow your hand away...
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''BLOOD AND TEARS WILL FLOW FOR ACVW'S,FOR LIFE''
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bugspray
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Re: Know your car

Post by bugspray »

Klippie, how much and where did you get a free flow zhorst installed, also what exactly is a free flow systen in a beetle look like? Admittedly I'm not to fammiliar with the underside of my car! But I do know in my fiesta the freeflow was removal of silencers and the cat, now in a bug isn't there just one box??
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Re: Know your car

Post by dubster »

Its a 4 in ( exhaust just bigger pipe with a free flowing silincer...very loud...or on a buggy/baja you get trumpets EVEN LOUDER...
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Klippie
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Re: Know your car

Post by Klippie »

i got it and fitted it at beetle beauties. Its a TNT pype. Will post pictures tomorrow. got bigger problems to worry about now that my backfiring. i need a new right fender and bonnet asap!!!!
!!!!enough torque to tenderize an elephant!!!!
“Much more of a hoot to drive than you might imagine. Think of it if you like, as a librarian with a G-string under her tweed pants. I do, and it helps.”
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Klippie
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Re: Know your car

Post by Klippie »

thanx alot jmvv. I wil contact you soon. thanx for all the advice. i had an accident this afternoon so im not in the best of moods. Just cosmetic though. need new fender and bumper
!!!!enough torque to tenderize an elephant!!!!
“Much more of a hoot to drive than you might imagine. Think of it if you like, as a librarian with a G-string under her tweed pants. I do, and it helps.”
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Tony Z
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Re: Know your car

Post by Tony Z »

dubster wrote:how i test for leaking exhaust is to cover it with my hand or somethings,youlle hear it leaking and if not it wil blow your hand away...
Spray quick start around the gaskets when the engine is running. Also rev it up, release the throttle and spray during the run down. any leaks will be found by the change in sound or popping from the quick start
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