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Herald estate Mazda project Print
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Mike Evans
April 28, 2016, 9:13pm Report to Moderator

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Finally got round to building this long time in the planning project so I thought I'd share the progress with everyone

The car is a 1970 1360 estate, the rear tub, bulkhead and chassis were beyond saving but the doors bonnet and tailgate are good to go again

As this car was going to be a mishmash of bits I didn't mind having a bit of fun with it

A couple of years ago the car was stripped down and all usable parts put into storage

Last year a Mazda mx5 became available for a good price and a plan was hatched

Another chassis was required but I didn't want to cut up a decent one as they are in short supply

A post on here led me to buy a chassis off a member, the rear diff area had been welded but not well, ideal for my needs

From here I have some pics of the work that has gone into her so far


Mazda rear subframe was 4" too wide so out came the cutter, I had a plan


No going back for this chassis now


Needed to attach a new bit but didn't fancy just a but join so this was made up ready to slip inside


Frame mocked up, spent a lot of time with the tape here to get it square



Rear end all sorted apart from shock mounts but not sure on unloaded ride height yet need to measure an mx5


Starting the front suspension this week so more pics to follow, am thinking I may convert the estate to a van now not sure if there will be room for rear seats
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sx2visuvesi
April 28, 2016, 9:31pm Report to Moderator


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Interesting.... got me thinking now

I'm in the process of fitting an RX8 Engine into a Spitfire, plan was to use the 8 rear subframe but the plan stalled when it came to narrowing of the rear subframe.
It looks like the MX5 subframe has a much closer rear track than the 8

I'll be watching this one How would you feel about making up a 2nd chassis if this one works out for you?


Gary S

----------------------------------------------------------------------------

Financier & Technical Director to sons '78 Spitfire resto-mod project

Project Rotisserie coming soon

Proud member of the Essex Wankelist Massive
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JohnD
April 29, 2016, 6:35am Report to Moderator


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You must have been inspired by Project Binkie!
Or was it the other way around?

Well done!  Keep reporting g please. (When you have finished your biscuit)

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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Jonny-Jimbo
April 29, 2016, 8:17am Report to Moderator

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Some nice work there.

One thing though - if you narrow the subframe, how does the differential still fit?

Keep up the good work, and keep the updates going.


62 Vitesse 1600 - Slammed & modified
67 2000 - Fitted with 2.5 o/d - 2012 RBRR, 2015 Essex Rally, 2016 HCR, 2016 RBRR
67 2000 Estate - Dormant
70 Herald 13/60 - First car, many bits
77 CZ 125 Sport - 70 miles on the clock
77 Kawasaki KM90 - Shop hack
81 Yamaha DT125 - Many bits
88 Ginetta G4/4 - Dead
88 BMW E30 320i - For Sale
89 Citroen AX GT - Rally car!
90 BMW E30 318iS - Building to FIA spec
90 Mazda Eunos 1.6 - 'Popeye'
93 BMW 530i - Donor
95 BMW E34 540i - 4L V8
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Mike Evans
April 29, 2016, 8:05pm Report to Moderator

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The rear diff on the mx5 has 2 cast alloy arms that support it. There is enough room to shorten these and make it all fit in, both shafts look like they will need to be remade shorter but there is a local firm that can do this

Thanks for the comments I'll keep you updated
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Jonny-Jimbo
May 3, 2016, 7:42am Report to Moderator

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Yup, We got an MX5 diff to trip over in the garage... Not sure what else it's doing there other than being a trip hazard... anyway.

I wasn't sure how close to the subframe the diff body sat, so I wondered if the new narrowed subframe would clash.


62 Vitesse 1600 - Slammed & modified
67 2000 - Fitted with 2.5 o/d - 2012 RBRR, 2015 Essex Rally, 2016 HCR, 2016 RBRR
67 2000 Estate - Dormant
70 Herald 13/60 - First car, many bits
77 CZ 125 Sport - 70 miles on the clock
77 Kawasaki KM90 - Shop hack
81 Yamaha DT125 - Many bits
88 Ginetta G4/4 - Dead
88 BMW E30 320i - For Sale
89 Citroen AX GT - Rally car!
90 BMW E30 318iS - Building to FIA spec
90 Mazda Eunos 1.6 - 'Popeye'
93 BMW 530i - Donor
95 BMW E34 540i - 4L V8
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Mike Evans
May 3, 2016, 9:18pm Report to Moderator

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Didn't have any other time on her over the weekend, permission wasn't given, managed to get an hour tonight so I started to clean up the main rail where I'm looking to mount the front wishbone

Found a bit of rot behind the front out rigger so this was patched




Old strut tower mount was removed and all the weld dressed ready for tomorrow's fabrication



Excuse the mess you wouldn't think I'd swept the table before I started tonight
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Mike Evans
May 9, 2016, 8:27pm Report to Moderator

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It's taken a bit of thinking time to get to where I'm at now,
I wanted to use the Mazda front suspension and mount it to the main chassis rails

Only problem is that the wishbones are 15mm longer than I was hoping making the track too wide

So after a good think I've decided to put a c notch in the main rail to carry the wishbones mounts

The side of the chassis rail was cut away to reveal this



So a bit if strengthening was required at the same time as a notch

After a while this was created




This is a L shape so the base of the main rail will be strengthened also

Mounting lugs will be welded onto tomorrow is all goes to plan
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ferny
May 9, 2016, 8:33pm Report to Moderator

Mr Hoppy!
Club Officer
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Acclaim - fully working and on the road
13/60 Herald - mx5 powered and other such fun things, legal enough...
Mk1 2000 - it's still alive, just sleeping
Expert 815d - the slug

If in doubt, do up until you hear the crack and then go another 1/4 turn to ensure tightness.
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JohnD
May 10, 2016, 8:34am Report to Moderator


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Md,
What are your plans to restore the strength of the rail?  Taking out one side of the box section will have reduced its torsional stiffness by a factor of 10 to 100!
John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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Jonny-Jimbo
May 10, 2016, 10:21am Report to Moderator

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I assume you're intending to put the bolts in from the inside of the wishbones? Just thinking it would be hard to get the arms off otherwise!!

Nice fabrication work etc though, looks tidy.

This is a chassis I made a few years back for a Ginetta G15, I'm sure people will recognise what the front suspension mounts are based on!

I'll be very interested to see how your chassis turns out and the resulting car of course! Good work!



62 Vitesse 1600 - Slammed & modified
67 2000 - Fitted with 2.5 o/d - 2012 RBRR, 2015 Essex Rally, 2016 HCR, 2016 RBRR
67 2000 Estate - Dormant
70 Herald 13/60 - First car, many bits
77 CZ 125 Sport - 70 miles on the clock
77 Kawasaki KM90 - Shop hack
81 Yamaha DT125 - Many bits
88 Ginetta G4/4 - Dead
88 BMW E30 320i - For Sale
89 Citroen AX GT - Rally car!
90 BMW E30 318iS - Building to FIA spec
90 Mazda Eunos 1.6 - 'Popeye'
93 BMW 530i - Donor
95 BMW E34 540i - 4L V8
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Mike Evans
May 10, 2016, 8:28pm Report to Moderator

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I'm not leaving the side out of the chassis I've made this up to notch the rail in



The ends will be caped and the whole thing will be seam welded in with adoptions plug welds to secure the lower side of the rail to the new panel,

Once the wishbone mounts are welded in I would say that this area will be stronger than factory especially at the age this chassis is,

Only managed to mock the mount up tonight, I'm fitting the adjustable camber bolts that's why the mounting hole is an oval



Yeah the bolts are going to be installed from the centre of the wishbone out over, the first concept was 2 small notches for the wishbone but there was no way to bolt it in
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Mike Evans
May 15, 2016, 5:51pm Report to Moderator

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Have hit a bit of a stumbling block at the min, I need these brackets cutting from 2mm plate but can't find anyone who is willing to take on a small order, does anyone know where I could get these laser/water cut??

Thanks in advance

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sx2visuvesi
May 15, 2016, 6:19pm Report to Moderator


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How many do you need? just the one or 2?

2mm Mild steel yes?


Gary S

----------------------------------------------------------------------------

Financier & Technical Director to sons '78 Spitfire resto-mod project

Project Rotisserie coming soon

Proud member of the Essex Wankelist Massive
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JohnD
May 15, 2016, 6:22pm Report to Moderator


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Some Colleges  that have engineering Departments have water cutters.
And half - no, 90% of the work will be punching the data into CADCAM.  Can you transfer your nice (but not to any BS/ISO standard) drawing into a CADCAM file, TurboCAD maybe?  Again a local College might use it as an class exercise.
Your suppliers might accept it then.

But me, I'd cut those out by hand!  Two only?    Take half a day, max!
John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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