I would also suggest for lightweight 70kg 1.6 and 125hp out of the box a daihatsu detomaso HD motor, comes with stainless headers and so many cams available aftermarket for over 170hp. Would be perfect with LPG and a yota box adapted.

This is no ordinary hemi/wedge hybrid, It uses the best of both worlds. I agree with normal hemi designs and boost who wouldnt after those puerto ricans embarrassing the world with little toyota 4 cylinders.

As far as I know Honda only ever experimented with an oval 8 valver bike engine with failure not the rotary valve.

there are better solutions than what we have on the road but poppet valve engines are a safe and simple bet.

Its a good story about Dunstan, thanks for the links as I forgot his name.

Im sticking with slime!

Algae will rule the world once again.

I like the simple alloy engine L mount from a pice of L tubing on the e series headed A pic.

Rotary valves work more than well today with modern sealing solutions. They worked in the past and work well on many applications today.
Coates has their own version also.
Nothing comes close, simple, compact and run at compression ratios normal poppet valves would decintegrate for low octane fuels.http://www.coatesengine.com/technology.html

On a side not I got a quote from roton (rotary valve maker) for 7-8000 pounds for a one off A series rotary valve head ready to bolt on or bolted on if I supplied the engine and custom pistons. This is a head that increases the flow to almost double the best twin cam heads and has many other advantages like up to 15 to 1 compression ratio or 12 to 1 with low quality fuels.
If this falls through some could contact Roton for the juicy bits.

http://www.rotonusa.com/advantages.html
http://www.rotonusa.com/roton_system.html

read 1-5 its very enthralling.

I agree with using the whole bike engine, however for the racing fellas they need to have the block to be datsun or nissan in some cases and others have other restrictions.

On a similar but different note....
I for years have been watching the progress of a certain rotary valve head engine that was going to be produced for the K series engine used in kit cars like the Caterham or lotus 7 replicas.
The problem was that the K series are no longer made.
This rotary valve head blew the away certain K series specialists but at 7-8000 pounds a pop it is cheaper to use things like sr20det engines and pommie ford equivalents.
However I asked if he could make one for the A series and he said he would if part of the total cost was made.
This would be a geardriven or belt setup.

He has eliminated the sealing issues and can run on a variety of poor fuels and 15 to 1 compression.

http://www.rotonusa.com/roton_system.html
read through 1-5 its surely a step ahead if the sealing is solved.

The interesting thing is the mixing of fuels of totally different structures with opposing qualities. eg. Hydrogen and CNG.
They both suck compared to petrol or LPG but together they are showing great promise.

http://www.rediff.com/money/2004/apr/14ioc.htm

http://www.autobloggreen.com/2007/01/21/india-mixing-hydrogen-and-compressed-natural-gas/
Hydrogen can be separated from h20 efficiently using non traditional methods and well documented.

Storage is the issue unless mixed with another fuel successfully.

Im looking forward personally to bio-fuel from algae not grown in ponds or lakes but with cheap and ingenious vertical plastic bag factories. There are thousands of different types of algae and using bio-synthesis some are 50 per cent oil in stucture.
1 hectare of these farms can make 100000 litres compared to 30-100 litres for corn or soy.
http://www.alternativeconsumer.com/2007/10/17/algae-the-next-great-biofuel-vertigro-energy/

http://www.youtube.com/watch?v=0DHjg9l-hQA




Good luck with the experiment, look forward to the efforts.

I still think bigger wheels on a car that looks great with pissy 13 or 14 is a wank thing. Im not bagging anyone directly just my point of view.
If you like to ruin a classic car with overdone wheels that only suit modern and larger cars in terms of aesthetics thats your pull.
I dont like almost ricers with datsuns. I didnt call anyone a fxxwit just a wanker = try hard, peter pan dreamer, overdoer, ricer, lack of tastebuds, stereotype tosser etc.

Overall well setup 13 or 14s will decimate 16 or 17s in every department of handling, durability and balanced aesthetics.