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EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 6:37 pm
by oz_ek
Gents,
The crush tubes / spacer tubes that the front end to sub frame bolts go through, are the EK and HR tubes the same length ?
Re: EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 7:44 pm
by ardiesse
No, they're not. I measured examples of each in response to the same question on another thread, but do you think I can recall which one?
Yes. "Project 2".
"HR front crossmember bolt: 1/2" UNF x 5-1/4" (shaft length 5", with 1-1/4" of thread)
HR front crossmember spacer tube: 1/2" ID, 0.630" OD (close enough to 5/8"), 2-5/8" long
HR front crossmember bolt upper washer: 17/32" (0.530") ID, 1.712" OD, 1/8" thick."
Didn't measure the EK spacer tubes. But Rare Spares has an HR-front-crossmember-into-FE-EK rubber kit. Don't know about spacer tubes though.
Rob
Re: EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 8:02 pm
by oz_ek
ardiesse wrote: ↑Mon Sep 26, 2022 7:44 pm
No, they're not. I measured examples of each in response to the same question on another thread, but do you think I can recall which one?
Yes. "Project 2".
"HR front crossmember bolt: 1/2" UNF x 5-1/4" (shaft length 5", with 1-1/4" of thread)
HR front crossmember spacer tube: 1/2" ID, 0.630" OD (close enough to 5/8"), 2-5/8" long
HR front crossmember bolt upper washer: 17/32" (0.530") ID, 1.712" OD, 1/8" thick."
Didn't measure the EK spacer tubes. But Rare Spares has an HR-front-crossmember-into-FE-EK rubber kit. Don't know about spacer tubes though.
Rob
Thanks for the reply Rob......So the HR tubes are around 66mm in length and it would appear the EK is around 94mm?
Re: EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 10:21 pm
by Mick
i believe the tubes come in different lengths also which are identified by a colour paint dobs something to do with alignment though i've mixed matched from different cars the same car never putting back where they originally came from with no ill effects
Re: EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 10:42 pm
by oz_ek
Mick wrote: ↑Mon Sep 26, 2022 10:21 pm
i believe the tubes come in different lengths also which are identified by a colour paint dobs something to do with alignment though i've mixed matched from different cars the same car never putting back where they originally came from with no ill effects
Colour coded?....The plot thickens!
Re: EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 10:54 pm
by Errol62
Base caster setting adjustment. Longer ones at the back gives more caster.
FB ute fixer upper, EK van on rotisserie
Re: EK / HR front end crush tubes.
Posted: Mon Sep 26, 2022 11:20 pm
by oz_ek
Errol62 wrote: ↑Mon Sep 26, 2022 10:54 pm
Base caster setting adjustment. Longer ones at the back gives more caster.
FB ute fixer upper, EK van on rotisserie
So these tubes act as shims?
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 7:32 am
by Errol62
My understanding is that they contact the cup washer above and flat rectangular washer at the bottom, thereby limiting compression of the rubber component to varying degrees. The front outrigger appears to have some range in vertical location which would enable tilting of the crossmember. Rob Shaw will have more to contribute no doubt.
FB ute fixer upper, EK van on rotisserie
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 7:44 am
by oz_ek
I should have taken more notice when I pulled it apart!......26 years ago!
- P1070877.JPG (143.26 KiB) Viewed 760 times
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 7:55 am
by oz_ek
HR front end....
- HR front end.jpg (101.34 KiB) Viewed 757 times
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 11:19 am
by Errol62
Pretty much I've just taken out the short shim tube, along with the bottom rubbers, when fitting the HR crossmember. The long bolts get very close to the end of their threads. I recall maybe cutting them another few turns or you can get shorter bolts or add spacer washers of course.
Sent from my SM-G781B using Tapatalk
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 1:16 pm
by oz_ek
Errol62 wrote: ↑Tue Sep 27, 2022 11:19 am
Pretty much I've just taken out the short shim tube, along with the bottom rubbers, when fitting the HR crossmember. The long bolts get very close to the end of their threads. I recall maybe cutting them another few turns or you can get shorter bolts or add spacer washers of course.
Sent from my SM-G781B using Tapatalk
Thanks for the input Clay, any idea if the HR bolts are shorter?
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 1:28 pm
by Errol62
I can only speculate that they are Phil.
FB ute fixer upper, EK van on rotisserie
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 3:04 pm
by ardiesse
The HR crossmember bolts are shorter than the EK ones. Can measure, if needed.
The long spacer for EKs comes in two lengths, with the longer one installed at the rear. Can measure, if needed.
When I did a front disc conversion on my EK, I used HR bolts, spacers, washers and rubbers. It might be possible to substitute the EK top rubber and top mounting retainer for the HR top rubber and washer, but you'd still need to use HR bolts, spacers and lower rubbers. (And, of course, you still need the EK outrigger rubber.)
Rob
Re: EK / HR front end crush tubes.
Posted: Tue Sep 27, 2022 3:14 pm
by Blacky
Rares sell a kit to put a HR front end into an FB/EK with the correct mix of rubbers required.