Subaru Engine Conversion Wiki, Let's compile all the knowledge into one thread... Options

[Britain Smith]

I have been going thru several of the threads regarding Subaru engine conversions to learn about the different ways people are performing the installation. From radiators to CV adaptors, there are several paths to take. Lets try to compile all that information into one thread. Anyone can contribute and I will take the information in the thread and update the top few posts with the details.

Here is a list of 914 Subaru related Threads:

Out with the old...in with the new...Britain's Racecar Development, Subaru Engine, Lotus Suspension! Time to go racing!

The Project Anklebiter Build Thread

Tony's Subaru Conversion Thread

Suby-engined rustoration

Zaney's Suby Rustoration Adventure

PorSTi Project Thread

It's official, Subaru EJ25 progress thread

Subaru 6 Cylinder EZ30R Conversion

My 914 EZ30R Twin Turbo Conversion

914 SVX swap, subaru 3.3 conversion

914 Subaru EG33 engine and WRX transaxle conversion, Finally finishing up

Subaru Engine w/Boxster transaxle, Perfect fix for 914???

Subaru Transmission into 914, DAMN that turned out good!!

Orange 75 project, Engine is in!

VOX Subaru Swap build

914 Subaru EG33 engine and WRX transaxle conversion

[Britain Smith]

Hey Duke...here is my Subaru conversion thread. I have a dyno date in 2weeks at Cobb Surgeline.

http://www.914world.com/bbs2/index.php?act...=2&t=113579

[DukeTrout]

Thanks for the link, Britain. I've been looking for the thread on your project. I've seen your 914 at the ORPCA AX events and heard about the project at Surgeline when I had my Legacy in for tuning. I'm very curious to see it hit the road.

Jay

Hey Duke...here is my Subaru conversion thread. I have a dyno date in 2weeks at Cobb Surgeline.

http://www.914world.com/bbs2/index.php?act...=2&t=113579

[sawtooth]

Something that may be useful for guys considering a suby transmission or have a conversion already...

I was trying to resolve an issue with my suby trans where I could hear a bearing noise coming from the tail near 5th gear. I started talking with Bremar about how to determine the correct oil level after doing the 2wd conversion. They said not to rely on the dipstick for oil level. They have seen problems where the suby trans gets used in a mid-engine setup and is mounted at a slightly different angle than in the original suby. The result can be a dry 5th gear which they have had to replace along with bearings. The solution is to tap a plug in the case in the tail section high enough to bath the gearset at the tail. When filling with oil, open the plug and fill until oil comes out the plug hole.

I did what they suggested in my suby trans, tapped a plug about 2-3 inches up from the bottom near 5th gear. I ended up with about 7 qts of oil which is almost double the suby specification. Doing this resolved the bearing noise which I now know was due to not enough oil in the trans.

[strawman]

...

I did what they suggested in my suby trans, tapped a plug about 2-3 inches up from the bottom near 5th gear. I ended up with about 7 qts of oil which is almost double the suby specification. Doing this resolved the bearing noise which I now know was due to not enough oil in the trans.

I'd like to see what you've come up with. How about a picture?

Geoff

[sawtooth]

...

I did what they suggested in my suby trans, tapped a plug about 2-3 inches up from the bottom near 5th gear. I ended up with about 7 qts of oil which is almost double the suby specification. Doing this resolved the bearing noise which I now know was due to not enough oil in the trans.

I'd like to see what you've come up with. How about a picture?

Geoff

I'm just making a judgment call here, I don't know exactly where bremar puts their inspection plug. But from the description I got, this spot makes sense.

A little hard to see with it in the car. It's the brass plug right in the center of the picture.


Here's a shot of another trans with the red dot about where I put the inspection plug. This location baths about 1/2 of the drive shaft below 5th gear set which should get good coverage on 5th gear above. It's a lot more oil than an original suby setup, but after talking with Bremar they didn't feel like too much oil (within reason of course) would hurt in this case.

[strawman]

I'm just making a judgment call here, I don't know exactly where bremar puts their inspection plug. But from the description I got, this spot makes sense.

A little hard to see with it in the car. It's the brass plug right in the center of the picture.


Here's a shot of another trans with the red dot about where I put the inspection plug. This location baths about 1/2 of the drive shaft below 5th gear set which should get good coverage on 5th gear above. It's a lot more oil than an original suby setup, but after talking with Bremar they didn't feel like too much oil (within reason of course) would hurt in this case.

Thanks for this info. I'll have to crawl under my car to gander at what's-what to better understand your suggestions.

Did you consider installing the inspection plug on the rear plate instead of the side of the trans case? That would avoid getting drilling/tapping metal chips in the gearbox. I've already completely rebuilt my gearbox and really don't wanna tear it apart again!

Of course, the chips would be relatively-soft aluminum and could be minimized by glopping grease on the drill bit and tap. Any thoughts on that?

Geoff

[sawtooth]

Thanks for this info. I'll have to crawl under my car to gander at what's-what to better understand your suggestions.

Did you consider installing the inspection plug on the rear plate instead of the side of the trans case? That would avoid getting drilling/tapping metal chips in the gearbox. I've already completely rebuilt my gearbox and really don't wanna tear it apart again!

Of course, the chips would be relatively-soft aluminum and could be minimized by glopping grease on the drill bit and tap. Any thoughts on that?

Geoff

Geoff that sounds like a good idea to me. I had the mid section separated from the trans at the time I tapped it so I was able to keep things clean. I'll probably just tap the plate like you are suggesting for my rebuilt trans when I swap it in.
- Dean