Difference between rear struts for estate and hatch?

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KevR
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Difference between rear struts for estate and hatch?

Post by KevR » Mon Oct 20, 2014 6:38 pm

I know (I think) the estate ones are bigger diameter, but without having one of each to hand, any quick way of telling whether one is estate or hatch? Diameters? Identifying marks? :?:
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Re: Difference between rear struts for estate and hatch?

Post by Mothman » Mon Oct 20, 2014 7:02 pm

Ile go do you some piccies of an Estate in a tick if that helps?

Andy

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Re: Difference between rear struts for estate and hatch?

Post by Mothman » Mon Oct 20, 2014 7:06 pm

Sorry bud, too dark, camera wont focus, do some for u tmorra.

Andy

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Re: Difference between rear struts for estate and hatch?

Post by KevR » Mon Oct 20, 2014 7:17 pm

I think they look the same externally Andy - I think it's the inside that's different, I just don't know exactly how!
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!

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Re: Difference between rear struts for estate and hatch?

Post by Mothman » Mon Oct 20, 2014 7:48 pm

Dont think they are the same, i think the length is different too.


Sort pix tomorrow.

Andy

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Re: Difference between rear struts for estate and hatch?

Post by sdelasal » Mon Oct 20, 2014 8:03 pm

I think the difference is the piston diameter - 35mm for the saloon and 37mm for the estate.

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mat_fenwick
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Re: Difference between rear struts for estate and hatch?

Post by mat_fenwick » Mon Oct 20, 2014 9:10 pm

Yes, they are the same casting but machined out to a thinner wall thickness for the estate (although I couldn't remember the exact ID). Hence a greater tendency to corrode through. I don't have a hatchback strut at the moment to compare side by side, but from what I recall there was no visible difference externally.
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1993 1.9 TZD Turbo Estate
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Re: Difference between rear struts for estate and hatch?

Post by electrokid » Tue Oct 21, 2014 10:36 am

Hence a greater tendency to corrode through
I had one fail - in the works car park just after doing some Citrobics and saying "look - the supension goes up and down" :oops:

At the time I didn't know there was a difference between the hatchback and the estate - so I didn't check that the right one was fitted as the replacement, but
35mm for the saloon and 37mm for the estate
is only a 5.7 % difference - so how much difference does it make ? And what would be the effect of fitting the wrong type to one side ?
1992 BX19 TGD estate 228K Rusty - SORNed
2002 C5 HDi SX estate

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Re: Difference between rear struts for estate and hatch?

Post by Mothman » Tue Oct 21, 2014 1:11 pm

Here are a few piccies, dont know if they will help or not.

Andy

Image

Image

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Re: Difference between rear struts for estate and hatch?

Post by KevR » Tue Oct 21, 2014 1:14 pm

:oops: Sorry Andy, confusion creeping in here.... I meant suspension struts/cylinders.... Should have made that clear.... :oops:
1990 BX TZD Estate ('the grey one', 1991 BX TZD Estate ('the white one'), 1982 2CV6 Charleston (in bits), 1972 AZU Serie B (2CV van), 1974 HY72 Camper, 1990 Land Rover 110 diesel LWB, 1957 Mobylette AV76, 1992 Ducati 400SS, 1966 VW Beetle, 1990 Mazda MX-5, 1996 Peugeot 106D, 1974 JCB 2D MkII, 1997 BMW R1100RS, 1987 Suzuki GSX-R1100, 1978 Honda CX500A, 1965 Motobecane Cady, 1988 Honda Bros/Africa Twin, 1963 Massey Ferguson 825, and a lot of bicycles!

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Re: Difference between rear struts for estate and hatch?

Post by MULLEY » Wed Oct 22, 2014 7:35 pm

Andy's one's are a damn sight cheaper than the usual one's fitted, i'm going to try & fit some ;)

My understanding is that the piston rod is a different length, so you'd need to swap them over if you don't have the right one's, along with the rubber gaitor as this is a different length also. No idea about thickness, doubt it'll make much difference tbh.
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Re: Difference between rear struts for estate and hatch?

Post by Way2go » Thu Oct 23, 2014 12:22 am

The thickness will make difference because the law of hydraulics is "force per unit area" therefore making it easier to achieve lift on a heavy load with a bigger piston. :)
1991 BX19GTi Auto

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Re: Difference between rear struts for estate and hatch?

Post by Mothman » Thu Oct 23, 2014 3:21 am

KevR wrote::oops: Sorry Andy, confusion creeping in here.... I meant suspension struts/cylinders.... Should have made that clear.... :oops:
Sorry bud, i assumed you meant tailgate struts, silly me, never heard rear cylinders called struts before. Sorry.

Andy

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Re: Difference between rear struts for estate and hatch?

Post by Tim Leech » Wed Oct 29, 2014 1:29 pm

damn, I need a pair of struts for the estate aswell (tailgate ones)
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