Re: [T3] Type 3 Carburetion

["Jim Adney" <jadney@vwtype3.org>]

On 5 Jan 2002, at 19:33, Keith Park wrote:

> I think the proverbial banana in the tailpipe here is the heads... porting
> them would be needed to really increase flow significantly. If JAKE is
> saying say 7-8 HP increase,  I would say,, maybe, but your Solex's can do
> that fine.. Im running 1 jet size up on the Notch with its Stock carbs and
> Im probably in the range of 80-90HP but with alot of other mods.

First off I agree that a careful head job and porting is probably the 
most valuable thing you can do here, and it will work with the stock 
carbs as well as the aftermarkets. Anyone considering this should 
study the Bill Fisher book AND Bergs white paper on heads before 
they start.  

A free flow exhaust is a quick and easy HP improvment, but they 
have down sides in fit and durablity.  

Both porting and exhaust changes will make you want to adjust the 
jetting of the carbs. See the Bill Fisher book.

Lastly, I seriously doubt if Keith is in the 80-90 HP range, at least 
not real HP. Almost all the numbers you read are carefully inflated 
to "keep up with the Jones's." More on this in the Bill Fisher book.  

There was a thread in the aircooled newsgroup a couple of years 
ago started by one of the more knowledgable owner/mechanics 
who finally got to use someones dyno. After all the work he had put 
into his engine he couldn't believe that his engine was only putting 
out ~45 HP (at the wheels.) He decided that his gearbox must be 
only about 30% efficient, because he just KNEW that his engine 
was putting out at least 150HP.  

Our egos make us easily misled.  ;-)  

> In my less educated days I ran slip-in 88's with higher CR in the
> square, and in its short life Id say I had 5-10 HP more... I barely
> noticed it. But please let us know how it feels if you decide to go
> for the better exaust and aftermarket carbs. 

-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

-------------------------------------------------------------------
Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe