The following are drawings that I used for my aircraft. I am sharing them only as an example of what worked for me.
Q2 – Subaru EJ-22 Conversion
- Prop Adapter and Prop Hub (zipped DWG and DXF files)
- Cooling System
- Fuel System
- Electrical System – Single Battery
Q2 – Subaru EA-81 Conversion
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Hello Jon,
1st – THANK YOU for sharing your experience with your EJ22 conversion. I have been following your progress for years. I have learned a great deal. I am now in the process of converting an EJ22 for my homebuilt puddle-jumper (highly modified Cygnet SF-2A – now a high wing – HEY it’s EXPERIMENTAL right?) I purchased Subie-Lyc’s last, unmodified engine – just when he decided to get out of the ‘business’
I am planning on using the latest PSRU from Air-Trike. He has ‘engineered’ it properly -I believe. I am using the Aerocarb from the AeroVee engine for my juice. My ‘fire’ will com from either a Ford Escort dizzy or/and a Megajolt electronic ignition. Pretty simple stuff.
Basically I just wanted to take this opportunity to thank you for the education. Your efforts were very much appreciated by me and now I am letting you know that – FINALLY – Finley!
Alan Reich
Sandpoint, Idaho
Wow! Thank you Alan! That is super nice to hear.
Sounds like you have a great project. Best of luck – hope to see you in the air sometime.
John, I just bought the Tri-Q from Richard K. and the EJ25 that was available from Bob’s estate. I was hoping you and I could connect directly to help get the motor built without having to duplicate things you have already learned. Please let me know if you are available to assist a bit on getting going. It seems to have already been flying before, but it lacks provenance so I am going to have to break it down to parade rest to get going. Please let me know if you’re up to help walk me through the front door and help get me going. In the mean time I am going to ingest your extensive shared knowledge. Sidenote: your fuel system diagram made so much sense I felt stupid for not having thought of it myself…..
Hi Ryan, I’m afraid you may not like what I learned. A Tri-Q is already overweight. A conventional gear Q can just barely handle the weight of a direct-drive Subaru engine but then you have prop issues (high rpm). Adding a gearbox is the obvious answer but then you are way overweight with all of it off the nose. If you want to fly, spend the money for an O-200. If you want to tinker/build, continue with the Subaru (you will not save money over an O-200). The Subaru is a great engine but, in my opinion, not a great option for the Q’s due to weight. I flew my O-320 powered RV-3 for four years and learned to really love that old dinosaur of an engine. Sorry…..
if this is still active, would you forward my email address to Alan Reich in Sandpoint Idaho for me. I have a cygnet and would like to communicate with him I am in Post Falls Idaho.
Thank you
Sid Goodwin
Sure thing Sid – it has been done.
I just spoke with a gentleman yesterday at Ram Performance and he still performs the conversions for the EA-81 and will also sell you a complete engine. He has been doing these conversions for over 18 years and uses an actual gearbox versus the belt drives. He is using SDS ignition and fuel injection and his workshop has been inspected by the FAA. The FAA inspector actually asked him “Why do you use such good components for your engines?” lol! He has been building racing engines for over 34 years and his 2.5L conversions will put out 160-180hp while only weighing 185lbs wet! After speaking with him for about 30 minutes, I felt more than confident in his ability to provide a solid aircraft engine! I feel he produces much more of an aircraft engine compared with a Conversion like the Viking!
https://www.facebook.com/RAM-Racing-Engines-1459871787625643/?fref=ts
Hi Nick. Might want to double check that weight number, I’m afraid is simply impossible. The EJ-25 bare longblock weighs that much alone. Nothing against RAM, they have been around a long time and I’ve heard good reports. Just these bad numbers that occasionally sneak out are very misleading to folks.