[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]

[T3] Carb Conversion?



Hello all!

I want to preface this question with this statement:  I have no immediate plans
to convert my FI system to carbs...I'm just trying to find out what's involved,
and the pros/cons for doing such a conversion.

I have a '73 Fastback (manual transmission) that wasn't running so well, and I
just spent like $300 at a local shop to have them tune it up, trouble shoot a
bunch of things, and get it running.  It is a totally stock engine aside from a
header exhaust.  Now it runs about at about 80%, I'd say...the engine only has
42K miles on it (car sat a while before I bought it), has great compression (130
PSI in all cylinders even when cold), and sits inside a car that should last
many more years.

Basically, if I could get the FI running 100% then I'd stick with it.  Since the
remaining problems involve some surging at idle, and slight surging/lack of
power at speed, I'm thinking I may have a leaky injector.  I may consider new
injectors in the future to see if that helps.

Anyway, back to the question...I've seen Weber Type III carb kits available, but
have no idea what's involved in converting the engine to carbs.

- Can you fit a mechanical pump to the stock case?  Or do you have to go with a
Facet electric fuel pumps?
- Are there any wires already in the rear harness that must be connected to the
carbs?  Probably not if they don't have electric chokes...
- How difficult is the tuning procedure? Are there any special tools than can
help?
- Do you need a special throttle cable (perhaps longer than the stock one)?
- What do you do with all the breather hoses that lead into the stock air filter
(from the heads, from the case, etc.)?
- What source of carbs/parts do people recommend?

One con I've heard of:

- The carbs have no choke, so starting the engine in cold conditions (i.e. 0
degrees F) can be a pain.
- what else?

The pros are obvious:

- Somewhat easier to maintain than FI, and easier to troubleshoot
- Parts readily available
- Less to go wrong
- Probably better mileage than I'm getting right now (about 22 MPG)
- Increased power
- what else?

Anyway, I'm eager to hear about people's experiences!  Many thanks in advance!

-Doug
73 fastback
douglas_brashear@amsinc.com


-------------------------------------------------------------------
Pitch in!  Send your pledge of support!  mailto:support@vwtype3.org


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [New Search]