Cross roads between a big /4 and a big/6, Share your experience Options

[Montreal914]

I am at a cross road in my narrow body restoration project. This is not an original build, but rather a sleeper 914 with nice elements. The chassis will be reinforced with an inner kit and outer RD clamshell.

The car will be converted to 5 lugs using the right 3" 911 struts/hubs and drilled rear hubs. The braking system is Alfa Brembo calipers in the front and 914-6 reproduction rears with appropriate 19mm MC. Sport Bilstein all around and 140 rear springs. Front 19mm and std rear sway bar.

Wheels will either be Fuchs 15" x 6" or 16" x 6". I have no intentions of shoehorning 7" wide wheels in the back, no fender stretching.

My engine options are as follow:

I have all the nice bits to build a 2.3 4 cylinder (HAM heads, Nickies, rods, crank, block with large studs, Tangerine headers, yadi yada...). I would setup a modern EFI to it and should conservatively get 150-160 HP out of it.

I have an opportunity to get a 3.2 Motronic 6 cylinder, 200+ HP.

I plan on using a 901 gearbox and I already have the Tarett heavy duty CV/shafts kit.


Although it may seem obvious that the desired option would be to go with the six, again, this is a narrow body with 6" wide wheels. My concern is the drastic amount of power and the additional mass on this car's configuration.

A while back I remember reading a comment from Pete Stout @horizontally-opposed , where I recall him saying somethnig like he felt the 914 has a better balance with a 4 cylinder engine, but he was willing to make that tradeoff to have the sound, smoothness and pleasure of a 6 cylinder. That being said, his beautiful car (reference narrow body in my book (IMG:style_emoticons/default/wub.gif) ) is equipped with a small 2.2 six.

I have some engine weight data that looks like this:

4 cylinder: ~321lbs
2.4 six cylinder: ~400
3.2 six cylinder: ~485lbs

I have never riden let alone driven a 6 cylinder powered 914, but I do have 10 years of daily California canyon driving mine (4 cylinder 2056). I know how the 4 cylinder car feels and I can probably picture how it would drive with a large /4.

I would like to hear what people have experience with their narrow bodied 3.2 conversion (I am sure there must be some), and what they prefer, their old 4 or their new six.

I appreciate and value all of your comments! (IMG:style_emoticons/default/smilie_pokal.gif)

Thank you,

Eric

[Montreal914]

Found some good threads an info in the garage.

I understand the fuel pumps needs to be matched to the engine and will fit in the 75-76 front fuel pump acces cover (IMG:style_emoticons/default/smile.gif) . Does the tunnel lines need to be larger? I have the SS ones already and was hoping to reuse.

Accelerator cable, it looks like patssle (hasen't logged in in two years (IMG:style_emoticons/default/sad.gif) ) figured a way to just loop ~180 degrees is /4 cable and brought it in trough the bell crack rod opening in the tin (picture below). Seems like getting the cable directly to the TB would be the simplest, lightest, cost effective way to do it. (IMG:style_emoticons/default/confused24.gif) That being said, it doesn't look like his setup is a 3.2 but still...

[ClayPerrine]

Found some good threads an info in the garage.

I understand the fuel pumps needs to be matched to the engine and will fit in the 75-76 front fuel pump acces cover (IMG:style_emoticons/default/smile.gif) . Does the tunnel lines need to be larger? I have the SS ones already and was hoping to reuse.

Accelerator cable, it looks like patssle (hasen't logged in in two years (IMG:style_emoticons/default/sad.gif) ) figured a way to just loop ~180 degrees is /4 cable and brought it in trough the bell crack rod opening in the tin (picture below). Seems like getting the cable directly to the TB would be the simplest, lightest, cost effective way to do it. (IMG:style_emoticons/default/confused24.gif) That being said, it doesn't look like his setup is a 3.2 but still...

The factory linkage for a 914-6 works with a 3.2. The 914-6 cable linkage was setup to adapt the 911 linkage to the 914-6 mid engine layout.

Easy enough to do and it uses all factory parts.

[Montreal914]

Found some good threads an info in the garage.

I understand the fuel pumps needs to be matched to the engine and will fit in the 75-76 front fuel pump acces cover (IMG:style_emoticons/default/smile.gif) . Does the tunnel lines need to be larger? I have the SS ones already and was hoping to reuse.

Accelerator cable, it looks like patssle (hasen't logged in in two years (IMG:style_emoticons/default/sad.gif) ) figured a way to just loop ~180 degrees is /4 cable and brought it in trough the bell crack rod opening in the tin (picture below). Seems like getting the cable directly to the TB would be the simplest, lightest, cost effective way to do it. (IMG:style_emoticons/default/confused24.gif) That being said, it doesn't look like his setup is a 3.2 but still...

The factory linkage for a 914-6 works with a 3.2. The 914-6 cable linkage was setup to adapt the 911 linkage to the 914-6 mid engine layout.

Easy enough to do and it uses all factory parts.

I understand that, but it seems like a lot of pivot points for something a properly routed cable to the TB could do. (IMG:style_emoticons/default/confused24.gif)

I see Rich Johnson seels a replica of all this but, starting from nothing, this adds up to ~$500 to route a bycicle cable to a point. (IMG:style_emoticons/default/blink.gif) Seems over engineered to me. I will look at the various options once I cross that bridge. patssle did it with a simple aluminum bracket, maybe others have found other ways too. (IMG:style_emoticons/default/smile.gif)