Timing / accelarating problem. 1200cc 36 hp engine.

[formul_volks]

Hi Folks !!!

I'm about to put the fire in my 54 oval ....

Was idling and well driving when it was 6v before the winter. Did a ''Pan-off'', left the engine on the pans, converted it to 12v. Changed the condensor in the 009 VACCUUM Timing advance.

Engine is idling verry well, valves are adjusted, but at the second I try to rev (super ultra smooth or WOT) he can't take it. Revs goes down, engine is slowing down and some time he give me a backfire (sometime in the carb, sometome in the exaust ...)

I need some help ... (Notch on the crank pulley is at TDC when cyl 1 point good on the distributor, so normaly 10 dregree of adavance on timing)...

What should I look for ???

[andk5591]

Confused - an 009 is a mechanical only. Not sure what you are saying about vacuum. The timing is typically set to 28-32 degrees at around 3500 RPMs. And if nothing else was changed, would put your old condensor in and see what happens.
_________________
D-Dubya Manx clone 1914. Ex wifes car.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Ex-wifes car.
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

[SixVolt]

While other applications will work, you should be running the Bosch VJU4BR8 distributor.

[formul_volks]

I might be confused about the actual distributor in place (For sure, it's a vacuum timing advance). I'm probably confused because I talked about instaling a mechanical with somebody else and did some research for a 009 mechanical. Will be back to you shortly for the right Distributor.

Condensor was replaced because we burned it while we was working on the airride setup, let the key ''on'' for a while and seems that is not good at all for the condensor ...

Andk5591 : Thanks for that info. A guy (friend of a friend) that have a lot of experience on those 36 hp engine did some work/adjustement 2-3 weeks ago. Started the engine yesterday, look at the timing and it was WAYYYYYY OFF the 10 degrees mark. I took the decision to adjust it down, nearer to the 10 degrees mark... but at the eye, it was probably there, near 30 degrees when reving it. Will try to go take a look tonight (car is not at home for the moment).

[formul_volks]

[formul_volks]

[tasb]

You don't need a fancy timing light to set your VJU 4 BR 8. By the way it is a SVDA distributor meaning that it has both mechanical advance and vacuum advance. It can be set static- meaning ignition on but engine standing still. The little notch on the inside half of your pulley is your static timing mark for cylinders 1 and 3. It can even be done by ear by listening for the pop of the spark, if you live in a quiet place. You can then verify full advance using the light as above.

Recheck your points gap and even better verify the setting is around 45-50 degrees using a dwell meter.
_________________
Roads Scholar
1957 Kombi low mileage 36 hp governor equipped M 178 Slow Drag Winner 2014, 2015, 2018

1965 hardtop Deluxe Microbus owned since 1990 M 620 factory 12 v 1500cc

1961 (October)Single Cab- Road Trip Workhorse

Member# 2059

[formul_volks]

The mark on the pulley is suppose to be 10 degree of advance, according to reading i did ... It is the one i used to set the static timing too.

[wayne1230cars]

The owners manual gave a pretty description of setting the timing on the 36 hp engines. I have a late 36 hp engine and the notch on the crank pulley is 7.5 degrees BTDC. I just set mine statically. Very smooth. Double check everything including wires.

http://www.thesamba.com/vw/archives/manuals/11_56beetle/53.jpg
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1960 beetle
1970 beetle convertible

[wayne1230cars]

You mention you converted to 12 volt but it was running fine before at 6 volts. Make sure that you have a good 12 volt coil. Again double check everything in the ignition circuit.
_________________
1960 beetle
1970 beetle convertible

[formul_volks]

[SixVolt]

In addition to everything else, make sure your vacuum can is operable.

[formul_volks]

[andk5591]

Put your timing light on. As you increase RPMs, the timing should advance.
_________________
D-Dubya Manx clone 1914. Ex wifes car.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Ex-wifes car.
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

[tasb]

The VJU 4 BR 8 vacuum canister delivers approx 10 degrees of advance. at the crank so only 5 degrees at the distributor. There's not a lot to play with. That screw is factory set and I usually don't mess with them.
_________________
Roads Scholar
1957 Kombi low mileage 36 hp governor equipped M 178 Slow Drag Winner 2014, 2015, 2018

1965 hardtop Deluxe Microbus owned since 1990 M 620 factory 12 v 1500cc

1961 (October)Single Cab- Road Trip Workhorse

Member# 2059