Online Community of Zenith Builders and Flyers
Why buy another 601 when you got one already ? Better fix yours knowing the issues you've got.
Unless your plane has serious problems why not stick with it ?
Anyway, as far as Subaru engines go, you've got to look at the manufacturer, are they still in business ?
Do they still support that product ? Do you know anybody flying this particular type engine ?
Anybody has that engine with heavy hour TT ? What were the issues they encountered ?
What were the maintenance issues and how difficult to remedy them ?
Problem with fringe engines is mostly due to quality maintenance people availability if needed.
Remember, this engine is NOT a CAR engine anymore so car mechanics are no help; it is NOT an airplane engine so no airplane mechanic will help. So, who can help if you are in need of assistance ?
I have a Subaru engine with 93 TTSN. Got NO COMPLAINTS at all. This engine sounds and runs good. NEVER had an issue; oil, glycol all in the LOW GREEN even at WOT for extended periods. Was ported for 100HP on dyno and tested.
Redrive is a gearbox type (2.3/1) which works very well with a Warpdrive 3 blade 70 inch set at 15 degrees.
The Subaru is a EA-81 (73hp) modified to 100HP.
If it was me, I would stick with what I got and try to fix the issues I got instead of going out and buying somebody else problems.
You do what you think is best for you.
Thank You for your thoughtful advice.