engine swap , anything smaller then a type 4, goal being 100hp ,smallest engine possible Options

[thelogo]

I'm desperate to ditch the 1.7

But not looking to shoehorn anything huge in there

I'd prefere to have a simple install with plenty of room to spare

I figured that the smallest engine possible would be an advantage

So are there any tiny boxer Subaru motors
Or

Something that fits better then others



And please weigh in

Advantage and disadvantage

Subaru conversion vs. Big type 4 (IMG:style_emoticons/default/WTF.gif)

[porschefile2010]

You can get some pretty impressive horsepower from a 1000cc or 1200cc motorbike engine. They use them in race cars so shouldn't be a problem if you can stand the noise!.

[Alphaogre]

Cam, heads, bore and stroke. Through enought money at an engin, and you would be surprised how much power you can pull out of these motors. You would be shocked on how fast they can make some of those drag bugs, and those are an even smaller displacement. The 914 is light enough, it does not take a lot to get a good power to weight ratio.

[Alphaogre]

You can get some pretty impressive horsepower from a 1000cc or 1200cc motorbike engine. They use them in race cars so shouldn't be a problem if you can stand the noise!.

You can do a v8 made out of 2 hayabusa motors like the radical. (IMG:style_emoticons/default/happy11.gif)

[damesandhotrods]

If a 100 hp would make you happy, why worry about a big Type IV? The stock 2.0 already had 95 hp, building a 100 hp 2.0 liter would probably the fastest and easiest route.

[Chris H.]

Subaru and Type 4 are pretty much the same size. For 100 hp the price is roughly the same to do it correctly. You'll get much more than 100hp from the Subaru but once you source a good engine, conversion parts, etc... you could get a pretty strong 100hp type 4.

Smaller...you could look at a rotary? Been done many times. Mike Bellis has done it and Rotary '14's is nice.

[veekry9]

The blower solves the torque curve. http://www.magnacharger.com/c-120-supercharger-kits.aspx
Honda Valkrie bike engine
You can see the trans input shaft and the boss above that carries the crankshaft end.
https://www.google.ca/search?q=honda+valkyr...F%3B3648%3B2736

http://www.ebay.com/bhp/honda-valkyrie-parts
http://stores.ebay.com/suncoastcyclesports...=p2047675.l2563
http://stores.ebay.com/Los-Angeles-Motorcy...n=1&_ipg=48
https://www.facebook.com/pinwallcycle

Honda GoldWing bike engine
https://www.google.ca/search?q=honda+valkyr...ne&imgdii=_
http://www.ebay.com/bhp/goldwing-1500-engine
http://volksrods.com/forum/showthread.php?t=34625

At these prices and condition,hard to dismiss.
Nothing simple to adapt,cutting and hacking needed.
Gut the gearbox,an adapter must be made,and so on.

(Illustration is an approximation,bore is 71mm,od of ring gear =?)
Something like this with a heavier flywheel,modded remote oil filter and much more.
Adding a blower makes for a decent output.Flat 6 SOHC 1.5L liquid cooled efi.
Just add labour and sweat equity.Be the first.

[Dave_Darling]

Simple install? Build up your 1.7 to get the power you want. Changing to anything other than a 914 motor will be much more complicated.

--DD

[GeorgeRud]

Mazda rotary if you want small and something that was already done before by Simpson Hybrids back in the day.

[SirAndy]

Simple install? Build up your 1.7 to get the power you want. Changing to anything other than a 914 motor will be much more complicated.

(IMG:style_emoticons/default/agree.gif)
You can get 100HP out of your 1.7L without having to go nuts on parts used.

PM McMark and ask him about his bolt-on turbo kit for the 1.7L ...
(IMG:style_emoticons/default/popcorn[1].gif)

[Mueller]

Smaller motor usually means less torque and higher rpm band for power and while car might be fairly quick in 1st gear, once you shift into second it might be a dog!


McMark added a small turbo to his 1.7 and from what I've read it made a huge improvement without going too crazy.

[r_towle]

if your heart is set on getting rid of the 1.7 motor I would suggest either a 2056 motor built and installed by McMark (simplest) or a subaru conversion to a small non turbo motor...

rich

[Dave_Darling]

Maybe we should ask what you mean by "small"... Small exterior packaging? Small swept volume? Light weight? Fuel efficient? What is it you are going for here?

--DD

[thelogo]

Really I'm going for reliability and the 1.7 has given me that so I shouldn't complaine

But I am disappointed with the fuel dilivery of these engines . Even know d,jet is still going strong

I think just a rebuild on the 1.7 and a complete injection overhaul would make me happy

But is that cost effective , vs dropping in a Subaru 2.2 or 2.5

Because I really like the water cooling cause I live in so cal

And hesitate to drive the 1.7 in temps over 90 deg f.

And the non d jet ,but I have a feeling the former will be much cheaper then the ladder
With only modest improvements that I don't really need .

I would feel terrible if I put the 1.7 thru daily rush hrour traffic to and fro work

But a Subaru or other engine I really wouldn't care .......

[thelogo]

And yeh as mentioned in previous post

I would think the Honda goldwing flat six

Would be superior to others as far smoothness ,

Mpg , quietness and longevity ...

Like formula2

Not formula 1

[mr2by4]

Any number of modern 4 cylinder water cooled motors will get you way over 100 hp and be compact and light. Problem is that then you need to plumb in water to cool it, you lose your heater, unless you get creative there and you lose your trunk up front and/or have holes cut in your wheel wells.
Stick with a decent type4, If you want better fuel delivery, get an EFI system. There are a couple of vendors mentioned on the list with ready to go systems for less than you would spend on specialty parts to fit a Subaru or anything else. You will, however still be stuck with your transmission...

[thelogo]

I personally like the transmission and don't intend to upgrade reguarless of powerplant

I think that 901. Is really a unsung hero ,granted mine is in pretty fine fiddle

I know there are a lot of em out there that are Grind ey

But I always remember to

Never abuse 1 st gear and I'm good

[brant]

Stupid thread

[thelogo]

Maybe we should ask what you mean by "small"... Small exterior packaging? Small swept volume? Light weight? Fuel efficient? What is it you are going for here?

--DD

Hey yeh ... This guy has it

Preferably all of the above attributes ....

Really I' only freeway cruize in 5 th so great mileage is really a big plus

Which as I understand as the 911 trend has shown , best mileage and pollution control

Can never be achieved by , air cooling


Is. This really true ????? (IMG:style_emoticons/default/WTF.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/WTF.gif)

[infraredcalvin]

Buy this...

http://forums.pelicanparts.com/porsche-914...ne-fi-bolt.html