Board Logo

1600cc & Pict 34 Carb tuning
aintgotitmusthaveit - June 16th, 2006 at 11:17 AM

Dudes,
I have a 1600cc engine with a sports air filter of some sort and sports exhaust in my recently purchased 356 replica. The thing I think has been re jetted a bit rich in anticipation of more available power. It farts and backfires like a dog that has eaten cheap dogfood. What jet sizes abd tuningtechniques do you guys suggest?


koolkarmakombi - June 16th, 2006 at 12:28 PM

search google, lots written. What dizzy u got?

where r u?


Bizarre - June 16th, 2006 at 01:12 PM

OK.... I will help

Read here :tu:

http://www.vw-resource.com/ 

This is the base setting for a 1600 - 1971-1974 34PICT/3 Carburetor

Venturi: 26mm
Power (Auxiliary)Fuel Jet: 60
Main Jet: X127.5
Float Needle Valve Diameter: 1.5mm
Float Weight: 8.5 grams
Air Correction Jet: 75Z (80Z for Ghia)
Pilot (Idle) Jet: 55
Accelerator Pump Feed: 1.3 - 1.6cc/stroke
Fuel Pump Delivery Pressure (max): 3 - 5 psi
Pilot Jet Air Bleed: 147.5
Accelerator Pump Jet: 50 Delivery Capacity (min): 400cc/min @ 4000 rpm

I would start there

Now, how about a pic of the 356 :bounce


aintgotitmusthaveit - June 16th, 2006 at 01:29 PM

Thanks for the advice guys, I will give it a go.
As to the Dizzy no idea. I only got the car last week and still learning about it. Its my first V-dub.

I planned to put a WRX engine in it but the wallet speaks and have decided to save my dough for a while.
The speedster currently weights 700kg, any suggestions for a donk?
Anyone know what HP a 1916 POPJOY puts out? How streetable are they for a daily drive with twin webbers, what milage can I expect?


silver - June 16th, 2006 at 02:38 PM

Where are you Located?


ctefeh - June 16th, 2006 at 03:46 PM

Easy visual check.
If there is no can on the distributor body you've got a mechanical advance distributor.

If it is a 009 (search...) then they don't play well with 34 Pict 3's as a rule.

Ctefeh


Bizarre - June 16th, 2006 at 04:51 PM

Give Speedster356 a call

He has a 1916 in his 356 and a WRX in the Speedster


aintgotitmusthaveit - June 20th, 2006 at 12:41 AM

OK- Getting under the bonnet I now realise i have a 30 PIct -2 carb.
So off to that great VW-Resource site.
That makes me ask the question of what engine I have?
The engine number is AB465786 vin 1112962616 meant to be built in 1/71?
Infact does anyone know the origins of my car?
Black 356A replica going around Sydner....


68AutoBug - June 20th, 2006 at 07:11 AM

hi,

going by the numbers

You only have a 1300cc engine from 1972...
ie made between 1st august 1971-31st july 1972

And a 1971 chassis
ie made between 1st august 1970-31st july 1971

the engine could have been made larger...
probably still single port by the carburetor...

a good fuel saver engine....

Stan Pobjoy engines are the engines....
1916cc is the greatest....
BIG difference.... to a 1300cc

cheers

Lee Noonan 68AutoBug

http://community.webshots.com/user/vw68autobug 





vw54 - June 20th, 2006 at 07:15 AM

where are u located ???

where are u located ???

where are u located ???

I suggest you go to someone who knows VWs since this is yr first


koolkarmakombi - June 20th, 2006 at 08:05 AM

what vw 54 said


aintgotitmusthaveit - June 20th, 2006 at 10:32 AM

Anyone recommend someone in Melbourne
I was going to head doen to Mick & Daniel Rienhart down at Australian Vw performance in Lusher street Bayswater.


68AutoBug - June 20th, 2006 at 10:49 AM

Australian VW performance should be able to help You..

Just don't go to a non vw shop etc...

they usually do more harm than good...

Best of luck

Lee

Check out the Australian VW magazine at a newsagent
You will find most VW shops listed in there... Lee


Kimbo - June 20th, 2006 at 01:11 PM

Quote:
Originally posted by ctefeh
If it is a 009 (search...) then they don't play well with 34 Pict 3's as a rule.

Ctefeh


Don't know whether this is of any value, but came across it the other day in relation to 009 and 34's:

http://www.aircooledtech.com/34pict3_modification/ 


Craig Torrens - June 20th, 2006 at 01:41 PM

Quote:
Originally posted by aintgotitmusthaveit
Anyone know what HP a 1916 POPJOY puts out? How streetable are they for a daily drive with twin webbers, what milage can I expect?


Best to give him a call 02 6654 3694.


toplessbug - June 20th, 2006 at 04:43 PM

make sure you ring him when you have a few hours to spare


aintgotitmusthaveit - June 20th, 2006 at 11:19 PM

Wow,
That Pobjoy guy can talk can't he. If his engines are as amazing as his ability to go on and on and on.... then I want one. Thanks for the suggestions guys. I will keep you all up to date.


Bizarre - June 21st, 2006 at 10:25 AM

Quote:
Originally posted by aintgotitmusthaveit
Wow,
That Pobjoy guy can talk can't he.


:P:P