Glad you jumped in with this, HW. Very good advice.Second what Topaz had to say about the size. To a point the bigger the better.
Also used bug motors are notorious for being junk. A common history is for someone to buy a used bug with a bad motor because it is cheap. When they find out the cost of a properly rebuilt unit they buy one of the mail order engines. One generally gets an engine that has been bored oversize on the case, has reground lifters with the hard surface gone, a set of rods that have been rebuilt so many times that they are a full millimeter short and the bushing won't stay in, among other "make it cheap" atrocities. This mail order motor drops a valve after 5K miles in it's welded head and the bug is then sold. The process repeats.
If it's a later model engine with 8mm head studs and it has a case that hasn't been overheated and warped then it - might - be worth keeping for parts. The only way to know is to tear it down, clean everything and take it to someone that knows what to look for.
I pretty much agree with this, but it does offer an alternative to all the case machining if you just need about 30 hp, and can handle the weight. You also lose the weight of the rods, lifters, valve train, and half of the crank and cam, abeit, not much more than what bjmc said.Or cut it down like the "Better Half VW".
By the way, the newest incarnation of the "Better Half" is to leave the case whole and use only two cylinders. I have to wonder why because you lose half the power but only save the weight of two jugs.
I agree with your mamma, and I'm not saying this about this company out of hate or resentment, I actually respect the owner, it's just that they are in a very competitive market, and they, like many other engine re-manufactures do not cater to people looking for high quality engines.California called GEX
My momma taught me that if I couldn't say anything good not to say anything at all. Said too much already.
One solution is buy old Sonerai project without engine, ok for one place and bad two place (little low power) plane with 1600 VW: http://www.sonerai.netI have a 1600 VW engine fresh out of an old beetle. I am trying to determine if there are any 2 place kits available for the 1600, and how would I best modify the engine for aircraft use. Thanks!!
Are you saying that the Subaru weighs only 18 lbs more than the 1600 VW? Is that with or without the liquid cooling system?Take an 8kg weight hit and go with a Subaru. You don't even have to open the case to convert it.