EK to HR diff conversion driveshaft modifications for M20 fourspeed

Includes clutch, transmission, propeller shaft,
universal joints, differential and rear axle.

Moderators: reidy, Blacky

User avatar
Errol62
Posts: 9664
Joined: Sat Dec 06, 2014 2:44 pm
State: SA
Location: Adelaide

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Errol62 »

Cable bell housing https://www.gumtree.com.au/s-ad/salisbu ... pasteboard


FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
User avatar
Brett027
Posts: 2265
Joined: Thu Apr 18, 2019 4:14 am
State: NSW

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Brett027 »

Many thanks Clay, that's the bell housing I have, but now with a Dellow hydraulic conversion bracket so I can keep my hydraulic setup. My issue was about clutch matching with black motor flywheel, but I've sorted that now with the purchase yesterday afternoon of a red motor flywheel So, hopefully l've got everything covered now.
Sucker for a rusty bomb
User avatar
Errol62
Posts: 9664
Joined: Sat Dec 06, 2014 2:44 pm
State: SA
Location: Adelaide

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Errol62 »

Flywheel will need to be lightened substantially to suit the black 202 fully counter balanced crank Brett. If you have that bell housing there shouldn’t be an issue running the black clutch?

I didn’t know there was a hydraulic conversion for the pull fork. Any pics mate?


FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
User avatar
Brett027
Posts: 2265
Joined: Thu Apr 18, 2019 4:14 am
State: NSW

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Brett027 »

No no no. My motor is a 186, not a black 202. So red flywheel is perfect for that motor. Had a black 202 one which I could have used but clutch and pressure plate complications matching M20 four speed made it hard to get a clutch plate.
As for fork, will have a look and get back to you when I have it worked out.

The only reason all this is happening is that my 186 motor is currently having the crank balanced and they wanted the flywheel to balance at the same time. We then discovered that the flywheel I had was actually not a Holden red motor one but something totally different. So then I ended up with a black motor flywheel. That fitted the crank, but raised a new issue of matching the clutch plate with a black motor flywheel that also fitted on M20 input shaft. So to bypass that issue I tracked down a red motor flywheel so that an off the shelf LJ 2002 clutch kit would fit. You blokes gave me such a hard time about having a cable clutch that I bought a Dellow bracket that is supposed to bolt on and let me use an EK slave cylinder. I haven't fitted it all together and wont be going near it for a while.
Last edited by Brett027 on Wed Feb 02, 2022 2:39 pm, edited 1 time in total.
Sucker for a rusty bomb
User avatar
Errol62
Posts: 9664
Joined: Sat Dec 06, 2014 2:44 pm
State: SA
Location: Adelaide

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Errol62 »

Ok makes sense now but I don't think the dellow bracket will go on that bell housing. I reckon they are designed for the ht to hx rat trap housing which is push rather than pull.

Your old flywheel could have been for a landrover conversion perhaps. Was quite common as the holden pressure plate would result in a very heavy pedal in the landy.

Sent from my SM-G781B using Tapatalk

getting my FB ute on the road
EK van on rotisserie
gpi
Posts: 1131
Joined: Mon Apr 26, 2010 2:08 pm
State: VIC

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by gpi »

the reason this conversion is good is because everything is available off the shelf at repco, dellow or rodshop for replacement.

ive got the hr diff, m20, dellow hydaulic clutch, chassis kit, 202 combo in EK225-18965-S and it rips mad skids.
User avatar
Brett027
Posts: 2265
Joined: Thu Apr 18, 2019 4:14 am
State: NSW

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Brett027 »

That's what I want Pat, mad skids🙂
Sucker for a rusty bomb
User avatar
Brett027
Posts: 2265
Joined: Thu Apr 18, 2019 4:14 am
State: NSW

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Brett027 »

Yes Clay, right on the money. I had a rummage around and I'm either going to have to find a hydraulic bellhousing that has a push fork ( is that the 'rat trap'?) or convert pedal to cable setup ( which I can buy off the shelf). I'm thinking the latter will be the most straight forward....
Sucker for a rusty bomb
User avatar
Errol62
Posts: 9664
Joined: Sat Dec 06, 2014 2:44 pm
State: SA
Location: Adelaide

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Errol62 »

HT to HX are a mechanical set-up referred to as rat trap and prone to jamming, poor feel etc. Replaced with the fb ek slave cylinder on dellow bracket they work well. The cable set-up is pretty good also and may buy you some realestate on your firewall.

Happy to purchase the dellow bracket if you dont use it as I need one for the 3 speed going in the ute.

Sent from my SM-G781B using Tapatalk

getting my FB ute on the road
EK van on rotisserie
User avatar
Brett027
Posts: 2265
Joined: Thu Apr 18, 2019 4:14 am
State: NSW

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Brett027 »

Cool. It's yours😀. Believe it or not I found a slave in my collection today that had one on it too. Hadlow or some name like that.
Sucker for a rusty bomb
User avatar
Errol62
Posts: 9664
Joined: Sat Dec 06, 2014 2:44 pm
State: SA
Location: Adelaide

Re: EK to HR diff conversion driveshaft modifications for M20 fourspeed

Post by Errol62 »

Hadfield? Ok thanks mate. Yes I turfed one years ago doh!


FB ute fixer upper, EK van on rotisserie
getting my FB ute on the road
EK van on rotisserie
Post Reply