Converting EA flywheel for EJ

subarooster · Post by **subarooster** » Thu Oct 28, 2010 6:02 am

G'day all, I'm at that point now where pretty much the only thing holding me back on the conversion is the flywheel. I've been told to have it machined to bolt onto the EJ but i'm just not sure how to go about it. How did everybody else do it? I'm just wondering how you'd make a template and whether anyone has taken their newly adapted flywheel to a drivetrain place and had it balanced? Any information would be greatly appreciated.

Cheers, Tom

rtcb65 · Post by **rtcb65** » Thu Oct 28, 2010 8:10 am

subarooster wrote:G'day all, I'm at that point now where pretty much the only thing holding me back on the conversion is the flywheel. I've been told to have it machined to bolt onto the EJ but i'm just not sure how to go about it. How did everybody else do it? I'm just wondering how you'd make a template and whether anyone has taken their newly adapted flywheel to a drivetrain place and had it balanced? Any information would be greatly appreciated.

Cheers, Tom

As far as i know, and did myself with our current project that is in the subie boys folder in the restoration area of the forum . We used a EJ flywheel.

steptoe · Post by **steptoe** » Thu Oct 28, 2010 8:24 am

Tom, to get the right answer I think you may need to tell which gearbo you intend to use. Sounds like you keeping L Series 5 speed? Search is your friend. Among others , El Freddo has a huge thread on EJ conversions covering many aspects

AndrewT · Post by **AndrewT** » Thu Oct 28, 2010 8:55 am

Obviously he's intending to use an EA gearbox.
Elongating the holes slightly until they fit by using a long skinny round file works perfectly fine. This has been done in several conversions I am aware of here, and did it myself and had no issues what-so-ever in any of them. Just abit of a sore arm straight after completing the work as it can take an hour or two!
The flywheel is held absolutely true in the middle by the spindle anyway, the bolts don't contribute to how centered it is, just hold it on there.

guyph_01 · Post by **guyph_01** » Thu Oct 28, 2010 9:50 am

I sent mine to an engineering place, told them I wanted the EJ bolt pattern on the EA flywheel. $80 and 4 days later it was done. They had filled the EA holes and redrilled EJ patten holes. Never had a problem. Did the same thing for two other EJ-Ea gearbox brumby conversions and had no issues at all. The flywheel was shaved to match the new clutch kit but that's all.

Subafury · Post by **Subafury** » Thu Oct 28, 2010 1:29 pm

AndrewT wrote:Obviously he's intending to use an EA gearbox.
Elongating the holes slightly until they fit by using a long skinny round file works perfectly fine. This has been done in several conversions I am aware of here, and did it myself and had no issues what-so-ever in any of them. Just abit of a sore arm straight after completing the work as it can take an hour or two!
The flywheel is held absolutely true in the middle by the spindle anyway, the bolts don't contribute to how centered it is, just hold it on there.

try more like 4 hours min. this was the hardest part of the whole conversion. id def pay for it to be done if i did it again

AndrewT · Post by **AndrewT** » Thu Oct 28, 2010 1:45 pm

haha well I dunno, I found it quite easy. Was using a good quality file (which makes a huge difference), and I'm not a pussy

It worked perfectly, and it was free, so I liked it.

GOD · Post by **GOD** » Thu Oct 28, 2010 3:29 pm

I have an even better idea - get it done at an engineering shop for free

. Gotta know the right people though.

It's 10 minute setup + 10 minutes work on a mill, and there's no need to plug the old holes. If you find the right shop, a carton should cover it.

Dane.

subarooster · Post by **subarooster** » Thu Oct 28, 2010 5:25 pm

Cheers for the help fella's.

I thought it was going to be a long and painful activity. Makes me feel alot more motivated for the conversion. Well in the next week or two, there may be a ej20 conversion thread to keep you all posted.

Cheers