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Author: Subject: Steve's MNR build
sdh2903

posted on 2/10/15 at 03:21 PM Reply With Quote
Steve's MNR build

Well I'm a bit slow on the uptake as this process started a while back when i ventured down to MNR and came out a few grand lighter after ordering a Vortx mazda starter kit, race cage and a few other bits and bobs. This is my second build so hope to learn from some of the mistakes I made the last time around.

Then the quest for a donor began. There weren't that many around the glasgow area crop up within budget and when they did appear they sold sharpish. I ended up finding this beauty up in Inverness for the princely sum of £375. 1995 1.8 UK car, 85k and 10 whole days MOT remaining. The owner had taken a novel approach to sorting the arch rust.

mx5
mx5


The drive back down to glasgow was terrible, a loud booming stainless exhaust, a window that wouldnt close and peeing down rain! The car was incredibly skittish and wouldn't hold a straight line. On stripping the car this was down to the fact that both front springs were in 3 pieces. The rot underneath was catastrophic, but the engine and box were sweet which was my main concern. A couple of weeks stripping and it ended up like this

Cutmx5
Cutmx5


Now with regards the engine i had originally set on turboing, then back to NA then keep it standard and back to turbo. Ive now settled on getting the power package from blink motorsport which includes headwork, cams and a megasquirt PNP. Funds will dictate whether this happens pre or post Iva.

The engine was sweet but did have a few weeps, so its had a bit of a refresh with new crank and camshaft oil seals. the sump resealed, new water pump, timing belt and tensioners and new plugs leads etc. Also had a clean and paint up and had the rocker cover powdercoated.

mnr4
mnr4


I was hoping to drop lucky and unearth a torsen diff, no dice, standard open diff. So a brand new ATB has been swapped in and the exterior cleaned up and painted. The ATB worked out roughly the same as a second hand torsen and came from Ashcroft transmissions. The guys over at Alpine transmissions in Hamilton did the honours and swapped it over and replaced a couple of bearings while it was open.

Description
Description


So fast forward to wednesday and im now the proud owner of this (spot the bodywork)







Yep staying well out of the way up in the roof!




Now the objective is to get to IVA without buying too many more trinkets, however ive already splashed out on a racetechnology dash2, some front wilwoods and a set of Oz ultraleggeras, but they don't count in my mind

Now my updates maybe a little slow to start as i'm on holiday next week then on a 5 week training course but hope to get cracking in December and have the Majority completed by March as its the quiet period at work and should be able to dedicate a fair chunk of time to the build.

Thanks for reading

Steve

[Edited on 2/10/15 by sdh2903]

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l5tuy

posted on 2/10/15 at 08:40 PM Reply With Quote
Looking good mate, what you doing with the Khan style wheels the car came with?

I've spent hours trying to clean up my aluminium, but after seeing yours I want to paint it. Looking really good.

Stuart

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sdh2903

posted on 3/10/15 at 03:55 PM Reply With Quote
No matter how well i cleaned it up it still looked grubby so gave up and painted it all!

Wheels were sold once i'd bought the ultraleggeras, they look better on the photos than in real life, bit like the whole car really.

Bulkhead panels on and started on brake lines in the couple of hours I had free this morning.

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micksalt

posted on 5/10/15 at 07:35 AM Reply With Quote
quote:
Originally posted by sdh2903
however ive already splashed out on a racetechnology dash2, some front wilwoods and a set of Oz ultraleggeras, but they don't count in my mind



Yep, treated myself to a Canems ECU, SPA steering wheel and Works-Bell quick-release boss under the "don't count" part of the budget

Don't forget to change your avatar to say that you're no longer waiting for your Vortx.

[Edited on 5/10/2015 by micksalt]

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jim87

posted on 8/10/15 at 07:38 PM Reply With Quote
As you asked, here's a couple of pics of the pipes down my tunnel

Nearly all of the clips are through the ally floor, and on the right I used the same rivet for two clips - one for brake line, one for fuel.
Right where the fuel pipes leave the back of the tunnel, there's a couple of clips into the chassis to hold them firmly in place
Description
Description



From the engine end. I did clip the top fuel pipe to the chassis, but rear brakes, and other fuel pipe are through the floor
Description
Description



If you do the fuel pipes like this into the engine bay:
Description
Description


You might end up with this problem:
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Description


Clutch fork very close to fuel pipes - a bit of engine movement and there could be fuel everywhere

If I think of any other stupid things like that that I've done, I'll mention it !

Jim

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jim87

posted on 8/10/15 at 07:40 PM Reply With Quote
Oh ... almost forgot to mention ...... IVA passed today ......... YEAH BABY !!!!!
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sdh2903

posted on 8/10/15 at 07:56 PM Reply With Quote
Jim you're a gent.

And Congratulations!!

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jim87

posted on 9/10/15 at 01:11 PM Reply With Quote
Cheers

See this clip here in red :
Description
Description


If you can, don't put it there. In fact if you can move the whole fuel pipe a bit closer to the lower fuel pipe at this point then do.
On mine this clip pokes out underneath the centre console, and you can see it. At some point I think I might just drill it out, and put the clip on the other way around, but I think I'd need to remove the gearbox first, so that 'aint gonna happen for a while.

Oh, by the way, I found those cleco's really useful throughout the whole build. If you haven't got any, I'd recommend them.

Jim

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sdh2903

posted on 9/10/15 at 04:22 PM Reply With Quote
Cheers Jim. Great tips. I was contemplating sitting the gearbox in place to make sure nothing fouls. I take it the rubber block with two threads is the gearbox mount.

I'm an aircraft engineer by trade so have bag fulls of clecos kicking about. In fact the price of them I think I could retire early

I'm away now for 6 weeks or so with a holiday and work so no progress. But I still have Internet so can still accumulate parts

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jim87

posted on 9/10/15 at 04:30 PM Reply With Quote
quote:
Originally posted by sdh2903
Cheers Jim. Great tips. I was contemplating sitting the gearbox in place to make sure nothing fouls. I take it the rubber block with two threads is the gearbox mount.

I'm an aircraft engineer by trade so have bag fulls of clecos kicking about. In fact the price of them I think I could retire early

I'm away now for 6 weeks or so with a holiday and work so no progress. But I still have Internet so can still accumulate parts


Yep, that's the gearbox mount.
Probably not a bad idea to at least put the gearbox in so you get an idea of where it sits.
From memory I think the bottom of the box bell mouth sits about an inch-ish above the chassis rail when the engine is holding it in place.

The gearbox is pretty big in the tunnel, which is why I pushed everything as far over to that side as possible

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thepest

posted on 9/10/15 at 05:32 PM Reply With Quote
Am doing one, just fitted the engine. Before the gearbox I'd pass the hydraulic lines, fuel lines and the wiring.
Then fit the gearbox.

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micksalt

posted on 14/1/16 at 08:59 AM Reply With Quote
Since the Uno master cylinder didn't turn out to be retained, which way are you thinking of heading? I presume you have the same problem as me, the brake pedal now sits directly above the chassis tube diagonal.

I would at least like to see what MNR propose, however, I suspect I'll just pick up a Westfield tandem cylinder, drill the holes top and bottom, plug the original holes, install the Westy cylinder and be done with it.

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sdh2903

posted on 14/1/16 at 09:36 AM Reply With Quote
I'm no longer building the mnr. Due to several issues the whole kit has been returned to Mnr.

I would have used the uno cylinder and just made a retaining plate to keep the rod in. It's for sale if you want it btw

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micksalt

posted on 14/1/16 at 10:17 AM Reply With Quote
quote:
Originally posted by sdh2903
I'm no longer building the mnr. Due to several issues the whole kit has been returned to Mnr.



That's a real shame. I assume you've had further issues beyond the non-offet transmission tunnel, this brake pedal issue and the non-delivered prop-shaft issue. What are you considering instead?

As for the brake cylinder, I'm going to either go Mazda or Westfield on this solution. For the Mazda solution, I've got some tamed lathe operators I can wave beer tokens at. I cannot help but feel that an internally retained pushrod is the way to go through.

[Edited on 14/1/2016 by micksalt]

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sdh2903

posted on 14/1/16 at 10:26 AM Reply With Quote
Yes several more quality issues. The pedal and prop weren't really issues at all to be honest. The prop turned up a week later.

I'm getting my garage built first as I was sharing an industrial unit with a mate during this build. Great for the space but I'd prefer to build at home.

Car wise I'm not sure. I'm still heavily invested in the mx5 donor kit with digi dash, atb diff, wilwood brakes, wheels etc along with all the general bearings belts clutch etc so ill prob look at building a westfield later in the year.

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l5tuy

posted on 14/1/16 at 10:46 AM Reply With Quote
Pretty poo to here about the quality issues, hopefuly its now fully resolved in your favour.

Concerned about the mention of prop shaft delivery, I still don;t have mine and can;t get the engine in untill it arrives. Been chasing a fair bit but if everyones waiting I can;t see it arriving in a hurry.

In reply to brake pedal, i've just used and modified the MX5 one.

Stu

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micksalt

posted on 14/1/16 at 11:21 AM Reply With Quote
Stu,

Have you got a build log going on? It'd be interesting to see your master cylinder modification.

Cheers,

Mick

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l5tuy

posted on 14/1/16 at 11:50 AM Reply With Quote
I've set up my go pro to take videos and been taking pictures periodically. Just have a look back but couldn;t se any image showing the part directly. I'll take some pics of it and forward. You got an e-mail address?

Basically, where the push rod met the old servo there was a bigger diameter piston type prt (this threaded onto the push rod), I cut the larger section off and welded the remaining female threaded part onto the MX5 crevis (this allowing the push rod to be threaded onto the crevis). There is a black tube the pretrudes out from the MX5 cylinder, this actually prevents the peddle falling and pulling the pushrod away from the cylinder, however i had to cut a section away from the bottom to allow full pedal movement.

As a secondary precuation, i've shaped a bracket to match the angle of the resting peddle and secured this to the floor (where the peddle box is mounted) to prevent it falling and pulling push road out of pocket (an alternative to the nut and bolt assembly thatís been used in previous builds).

Finally, There is a wee bit of play between the the pedal resting on the bracket and the push rod hard against piston, to remove this Iím toying with the idea of mounting a spring from rear of peddle to back of bulkhead plate (maybe using the bolts holding on the brake bias valve), thus keeping the peddle/crevis/push rod/cylinder in compression (keeping previously mentioned bracket redundant, secondary).

Iíll get pics, make this a bit clearer.

Stu

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jim87

posted on 14/1/16 at 01:00 PM Reply With Quote
quote:
Originally posted by l5tuy
Pretty poo to here about the quality issues, hopefuly its now fully resolved in your favour.

Concerned about the mention of prop shaft delivery, I still don;t have mine and can;t get the engine in untill it arrives. Been chasing a fair bit but if everyones waiting I can;t see it arriving in a hurry.

In reply to brake pedal, i've just used and modified the MX5 one.

Stu



My prop wouldn't actually fit in from the engine end. Had to go in from the diff end, so you'd fine if you wanted to install the engine without having the prop yet.

I'd be interested to see what you've done with the brake pedal too!

Jim

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l5tuy

posted on 14/1/16 at 01:11 PM Reply With Quote
quote:
Originally posted by jim87
quote:
Originally posted by l5tuy
Pretty poo to here about the quality issues, hopefuly its now fully resolved in your favour.

Concerned about the mention of prop shaft delivery, I still don;t have mine and can;t get the engine in untill it arrives. Been chasing a fair bit but if everyones waiting I can;t see it arriving in a hurry.

In reply to brake pedal, i've just used and modified the MX5 one.

Stu



My prop wouldn't actually fit in from the engine end. Had to go in from the diff end, so you'd fine if you wanted to install the engine without having the prop yet.

I'd be interested to see what you've done with the brake pedal too!

Jim


Jim, it was more to determine the position of the engine/gearbox mounts as these aren't pre-determined. Although that's a pain if the diff has to come out again, kind of hoped it was all set as i've secured brake and fuel pipes back there, dont want to risk denting them.

Stu

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micksalt

posted on 14/1/16 at 01:21 PM Reply With Quote
Ah yes, I wondered about engine mount installation. Granted, there is a bit of play in the engine mounts to take up small offsets, but since the diff is very rigidly held, I figured the best bet would be to install diff, propshaft, gearbox and engine before drilling the chassis for the mounts to ensure the engine-to-diff distance is correct.
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jim87

posted on 14/1/16 at 01:26 PM Reply With Quote
Ah, I see. My engine/gearbox mounts were already drilled. Perhaps due to MNR supplying the engine/gearbox/diff for me.
But yeah, I think you may have to take the diff out again - could be different now, but the flange on the prop wouldn't pass past the tunnel about where the gearbox mount is.

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micksalt

posted on 14/1/16 at 02:35 PM Reply With Quote
This is why I bought my engine hoist rather than borrowing or hiring. I can play the engine hokey-cokey game to me heart's content
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sdh2903

posted on 14/1/16 at 03:14 PM Reply With Quote
You can (just) feed the prop in from the rear with the diff installed, its tight but it does pass providing you dont have the tank installed.
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l5tuy

posted on 14/1/16 at 03:37 PM Reply With Quote
Hopefully i'll have an answer for you next week, just heard back from MNR, my prop should be arriving with them Monday. Need to get my build moving, want it track ready by April and i forcecast a delay trimming/installing loom.

Stu

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