912 with a 1600cc Dual Port Engine

[DawsonSkipper]

hey all!

First post as this whole realm is new to me, coming over from BMWs / 2002s / e30s.

Looking to grab my first Porsche. Found a good deal on a 912 with a t1 1600cc dp engine swapped in.

I know before I even get the car I'm going to want some more zing out of that motor, what's my best option?

Mechanically inclined, would prefer to not just buy a crate if I don't need to.

Would like to be above 100hp, 140 max probably, but I would be plenty happy with just 100 give to take a bit. Redline def needs to be bumped up to min. 6500.

Im not looking to drop 5-6k on a crate engine at this time, but if thats the most cost effective route to take, let me know!

[kpf]

Welcome! Read through the Performance/Engines/Transmissions forum here. Lots of information there about building high-power VW engines.
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1971 Super Beetle

[jeffrey8164]

I just added up what I spent for all the parts for my new 2276.
$6100.00 give or take.
That was with new everything though.
You may get by with a cam, pistons and cylinders some carbs, a little machine work on your case and a clutch though.
A 1915 should get you around 120hp depending on the route you take.
You’ll have to pull the engine apart to determine what is usable.
_________________
Volkswagen!
Turning owners into mechanics since 1938.

“Let he that is without oil throw the first rod”
(Compression 8.7:1)

[Starbucket]

You could put a turbo on it, if the video is still there search "Fusca Turbo accelerando !!!!" (no quotations) in the super beetle forum to see the added power. I think the kit is less than $1000.

[[email protected]]

you could purchase a CB performance engine with great hp much cheaper than to find a 912 engine to install

[ottobevis]

I'm just finishing installing a 2165 (78x94) in my 912. As KPF said there's a wealth of information (under performance engines and transmissions) and some amazingly helpful people here. Engine choice is a personal thing and depends on budget and how you intend to use the car among other things. The only advise I can offer is the following.

Assuming you have stock gear ratios and tire diameter your RPM will be about 3,700 at 70mph (from memory) in 4th (if a 4 speed) or 5th (if a 5 speed). Assuming you want to cruise at highway speeds it's advisable to have engine that makes peak torque close to this RPM (maybe a bit before). I would look at graphs showing RPM vs 912 gear ratios and decide where you want the power band to be. In general you want an engine that can reach atleast 6,000 rpm for 912 gearing. More means higher top speed but it's a tradeoff with low end torque and long term wear on the case, valve train etc. Another thing to consider is if you need or use an external oil cooler your custom rear engine support maybe in the way of the oil lines. I spent a long time making my rear engine support and the space and access to the oil lines is extremely tight. If you use a deep sump ground clearance will be reduced. From memory there is 5" without a deep sump. An Accusump or drysump is an alternative.