dumb engine upgrade question, 1.7 - ?? Options

[dale73914]

Hi All,

Rather than trawl for hours ( and i know the info is probably here ), i just thought i would ask.

My 1973 is a 1.7 , running original injection.

Motor is in good running condition, however as is always the case i would like a bit more oomph...

Now i'm pretty new to type4 engines, and know very little about them, aside from performing basic maintenace tasks.

I've worked on most of my cars over the years, but this is only my second aircooled ( used to have a 73 911E 20'ish years ago that ended up as my house deposit (IMG:style_emoticons/default/sad.gif) , but it was serviced by a Porsche dealer)

If i wanted to replace the 1.7 , or upgrade it to a 2.0 or 2056 ? ish sized motor, can i use the original block, the injection etc, or does the whole lot get replaced with a later model 2.0 system.

I dont want to go to carbs if possible, and would prefer to retain the standard look.

Or is there work i can do to the 1.7 possibly to make it that little bit quicker ?

Given i'm also in Australia, hunting for the right parts, and advice is not as easy as it is in the US.

It is just a dry weather Sunday car, i have no plans for any type of motorsport with it, i just want a bit more off the line performance.

Cheers

Dale

[Mblizzard]

As the old saying goes in relation to car performance, the only thing that beats cubic inches (centimeters in our case) is cubic dollars!

I know there is a thread somewhere where the god of air cooled engines himself (AKA Jake Raby) outlined what had to be done to take a 1.7 to a 2056 and beyond. The reality of the upgrade is that most of the 1.7 gets replaced with other parts.

With the 1.7 you are limited by the heads and how well they flow. You could put 103mm cylinders on it but you would never realize the full potential of many of the possible upgrades. By the time you switch heads, get a 71 mm crank, and so on you have encountered some serious costs.

There will be others that will have more detail or you can PM me and I can send you the link to the information. But my thoughts are that it would be cheaper to upgrade to a 2.0 than it would be to upsize the 1.7.

On the other hand you may want to touch base with McMark at Original Customs and ask about his turbo 1.7. But I am sure that is cubic dollars as well.