A Z4 Targa?

ZippyZed4

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Jan 24, 2024
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28
I'm curious how you will be compensating for the lack of a roof.

Is the convertible body the same as the coupe below the roofline, and the roof just adds extra (but unneccessary) strength? Or are you going to base it on a convertible and weld on the rear half of a coupe roof? Or are you going to strengthen a coupe floor to make it as strong as a convertible floor?
Well…. The idea is, I am adding all coupe parts to my E85 so this leaves the windscreen mechanism for the softop… It’s a case of crossing that bridge when i get to it but using the softtop to bridge the gap is the idea…😉
 

ZippyZed4

Dedicated Member
Joined
Jan 24, 2024
Points
28
I'm curious how you will be compensating for the lack of a roof.

Is the convertible body the same as the coupe below the roofline, and the roof just adds extra (but unneccessary) strength? Or are you going to base it on a convertible and weld on the rear half of a coupe roof? Or are you going to strengthen a coupe floor to make it as strong as a convertible floor?
The e85 is the same below roofline, there are a few areas i will need to slightly adjust and no doubt some hidden issues, for instance the rear quarter wings are different on an e86 but i can retrofit the e85 wings to make it work, also i have to change the door windows… these are main differences i can see….so far 🥴😆
 

Lee

Zorg Guru (V)
British Zeds
M Power
#ZedShed
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Mar 26, 2014
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193
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Basingstoke
Model of Z
Z4 Coupe 3.0si
Interesting to follow this: The time and effort that will be involved will be crazy.

Coupes are changing hands for as little as £4500 at the moment.
 

ZippyZed4

Dedicated Member
Joined
Jan 24, 2024
Points
28
I'm curious how you will be compensating for the lack of a roof.

Is the convertible body the same as the coupe below the roofline, and the roof just adds extra (but unneccessary) strength? Or are you going to base it on a convertible and weld on the rear half of a coupe roof? Or are you going to strengthen a coupe floor to make it as strong as a convertible floor?




A jigsaw to part 6 - job done =))

Scratch that - I just read that you are starting fom a convertible. Personally, that would be the way that I would go. It would seem harder to do, but it avoids the problem of having to deal with part 7, and different doors.
Absolutely 🤣🤣 Jigsaw to part 6, however this is an issue as the top of the windscreens are different, E85 still gives the Targa soft top option… 👍🏻
 

ZippyZed4

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Jan 24, 2024
Points
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Interesting to follow this: The time and effort that will be involved will be crazy.

Coupes are changing hands for as little as £4500 at the moment.
The time has been the preparation and looking into how to achieve this, I have bought all parts needed from Ebay, the tailgate/roof pillar was shipped in from Germany and was only £300… I agree if you want a coupe they can still be as cheap as £5k but the whole point of this was to have best of both worlds…i do like a convertible but love the coupe shape too… pillarless windows and targa roof is still a good experience… It’s been fun trying to work out exactly how to execute this… a bit like in lockdown when i built a Steinway replica Grand Piano 🤷🏼‍♂️🤣
 

ZippyZed4

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Great! I do like people with big ideas who are not afraid to get stuck in. :)
I appreciate that!… it’s all been born from on off illness (nasal polyps) and lockdown days… being creative has great healing properties…plus keeps you out the pub 🤣👍🏻
 

Duncodin

Zorg Guru (III)
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Pontrhydyrun
Model of Z
Z3 M44
Would it not be easier to start with an E86 and cut the roof? 😀 Mind you, I would much rather see an E85 being mutilated.
Does the E86 coupe have the same floor/chassis as the E85 - I mention that because the floor/chassis of the E85 was designed as a roofless car while the E86 wasn't. I wonder if the E86 has less weight-strength in the floor to make up for the extra weight in the roof?
 

ZippyZed4

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Joined
Jan 24, 2024
Points
28
Does the E86 coupe have the same floor/chassis as the E85 - I mention that because the floor/chassis of the E85 was designed as a roofless car while the E86 wasn't. I wonder if the E86 has less weight-strength in the floor to make up for the extra weight in the roof?
Don’t quote me on this, but i read somewhere the Z4 as you say was designed as a roofless car, so when the coupe was thought of they just simply added the roof… which in all honesty isn’t really structural, I’ve researched so much on this and I have never seen or read of any major differences… as for added weight etc it reports the E85 & E86 are the same weight so i suppose i am adding weight and it will be heavier… it really is a suck it and see job… 😉
 

ZippyZed4

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Jan 24, 2024
Points
28
Does the E86 coupe have the same floor/chassis as the E85 - I mention that because the floor/chassis of the E85 was designed as a roofless car while the E86 wasn't. I wonder if the E86 has less weight-strength in the floor to make up for the extra weight in the roof?
If anything i will be strengthening the E85 by adding roof pillar… granted it maybe a little heavier… I possibly will leave the roll-bars on too (as where Coupe doesn’t have the “hoops” ) …let’s be honest it’s a bit of a Frankenstein 🤣
 

Duncodin

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Points
139
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Pontrhydyrun
Model of Z
Z3 M44
I was talking about the strength in the roadster basically agreeing that your idea to modify an E85 is best. ie rather than chopping the roof off an E86 that wasn't designed roofless.
 

ZippyZed4

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Jan 24, 2024
Points
28
I was talking about the strength in the roadster basically agreeing that your idea to modify an E85 is best. ie rather than chopping the roof off an E86 that wasn't designed roofless.
Absolutely 👍🏻
 

ZippyZed4

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Joined
Jan 24, 2024
Points
28
I was talking about the strength in the roadster basically agreeing that your idea to modify an E85 is best. ie rather than chopping the roof off an E86 that wasn't designed roofless.
I’m still getting used to this site… are you doing a 507 z3 project?
 

t-tony

Zorg Expert (II)
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British Zeds
#ZedShed
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Dec 31, 2013
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226
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Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Would either/both of the roof panels from an E89 be any use?, if you could get any. At least they are made to fit together.

Tony.
 

ZippyZed4

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Jan 24, 2024
Points
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Would either/both of the roof panels from an E89 be any use?, if you could get any. At least they are made to fit together.

Tony.
Hey Tony, Thanks but i will be retrofitting the E85 rag top for the Targa roof… or just taking car out when it isn’t raining 🤣🤣👍🏻
 

RickyBobby

Zorg Guru (III)
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The M44 Massive
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May 9, 2020
Points
143
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Sheffield, South Yorkshire
Model of Z
Z4MR
Sounds like an interesting project - I always fancied getting the speedster humps for the Z3 but have never seen a set for sale or in person. I guess the targa top takes that idea to the next level :thumbsup:

Screenshot_20240125_170238_eBay.jpg
 

ZippyZed4

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Jan 24, 2024
Points
28
Sounds like an interesting project - I always fancied getting the speedster humps for the Z3 but have never seen a set for sale or in person. I guess the targa top takes that idea to the next level :thumbsup:

View attachment 289121
Hey RickyBobby, Funny you say this, yes i too was looking at creating some moulds (although a bit higher) to create that speedster look… I was watching Magnum Pi earlier and thought “maybe subconsciously i’m trying to get a 308 look” … 🤣
 
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