Raven + Jabiru 2200 or 3300?

[krjockey]

Guys this is driving me crazy, accepting that I can't afford a 912s, if you were spending my money, not yours, which would you choose Jab 2200 or 3300 and why?

I would consider increasing the displacement of my VW. The rule of thumb on determining HP on a VW is to take displacement in cc eg 2400 and devide by 30. that will give you 80hp at 3000 Rpm. A 2.7litre should give you 90hp and shouldnt add to your weight. Only expensive bit is a stroker crank and it isnt even that expensive.

[justin.schoeman]

Only expensive bit is a stroker crank and it isnt even that expensive.

Would you mind telling us where you find such a crank? I am looking for a 78mm type 4 crank...

[Johannvanniekerk]

Hi T4flyer

I am also building a Carl Babst Raven but have yet to decide on an engine.
There is a Zodiac xl in Secunda fitted with a Jabiru 2200 but I am not sure if it has flown yet. Saw it 2 months ago taxing up and down the runway preparing for first takeoff. Will try and get the contact details of the person.

Cheers
Jo

[grostek]

Only expensive bit is a stroker crank and it isnt even that expensive.

Would you mind telling us where you find such a crank? I am looking for a 78mm type 4 crank...

Hi Justin,

Have a look here

http://www.aircooledtechnology.com/stor ... hp?cat=269

Also Here

http://www.scatcrankshafts.com/


Kind Regards,

Gunter Rostek

[Boet]

Justin, if you have to, chase the wife out on prostitution, and moer the piggybank stukkend ek se, but if the choise was mine between the Jab and the VW, I would go for the Jab. It should make a good combination. I do not like VW. But then it is only me.

[T4flyer]

Its not only in the way you build a VW that counts, but also the sum of its parts.
It is much cheaper to build a type 1 as parts are readily available and reasonably cheap (don't by parts because there are cheap, because a lot are "performance parts" designed for the "hot them up" car guys and are of dubious quality)
I prefer the Type 4 as it is an inhently stronger engine and does not suffer so much from cooling problems (quite simply put, it was designed to lug a bus all day in very hot conditions)
Type 4 parts are scarce and good parts cost a fortune (ask me I have spent an arm and a leg on parts alone) Type 4 103 or 105mm cast barrels weigh 6.4kgs (for your 2,400cc) A good set of billet aluminium "Nikkies" (save 4kgs and improves cooling and reliability) will cost +- US$2,000. A billet crank +- US$1,600-1,800 and thats just the start. a really well built and reliable 2,600-2700cc type 4 engine will cost up to +-US$10,000 by the time its ready to fly.
If you keep a type 4's cc and Hp at a conservative 2200-2400 and +-80hp (at sea level) then concentrate on building a quality engine they can be relativity cheap & reliable. However, when you start pushing the power up the cost of maintaining a reliable set up goes up exponencially. Bring a bottle of wiskey and I will show you my parts invoices!

I don't quite agree with Boet, because if built correctly VW engines "can" be good engines. where I do agree with Boet is that given the choice I think the Jabiru is the one for me.

Looking more like the 3300 for my Raven, as I can't find any information on any flying Zodiac 601,s or Raven's flying on the 2200 Jab

Cheers T4Flyer