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R5 Turbo Replica build

As far as I understood the Maxi version needed to be re-homologated to incorporate the different wheel and tyre geometry. So it makes sense that it has a larger track width. Judging from maxi pictures the front wheels fill the entire arches right to the edge, I guess that is not only from the wider tyres. I'll look into it this weekend.

A lot of maxi pictures: http://www.forum-auto.com/sport-auto/theme40/sujet378083.htm


E
 
Thanks Erik, I appreciate.

Looking at those pictures I would say that you are right. Those front wheels don't look highly dished but the outside edge of the front wheels look almost inline with a bumper that measures 1.625m edge to edge. The only way this could be is if the Maxi5 had a wider front track width. This is good news for me since it means that I will be able to order front wings to fit my car and not have to worry about making my own. I may even consider going the whole hogg and getting the boot spoiler as well, that way I'll have a Maxi5 lookalike? Bang goes the IMSA car idea.

Maximan, if you could check this out on your Maxi5 I'd be grateful as I understand that you have one of these very rare beasts?

G
 
The article in Echappement May 1985 no.199 mentiones a 7cm wider track. However, the article in Echappement November 1986 no.217 mentiones only 4 cm. Rallyes magazine December 1994 mentiones additional space of 20mm for each side, so that would be the 4cm again.

You can read it here: http://1waza2.ifrance.com/

I'll keep on searching.

By the way, all the links are from the "useful sites" in the information section.

Cheers,
Erik
 
I was under the impression that Renault wanted the front track of the Maxi to match that of the rear. Correct me if I'm wrong, but I think they realized that having a wider rear was detrimental to the handling of the car and that they could of course get more rubber under the front arches if they widened the front track accordingly. Off the top of my head I cannot think of any other performance car that has this track difference front/rear than the R5 Turbo, which must tell us something!
 
What about the Reliant Robin. Oh wait a minute that wasn't a performance car, although its performance was quite a performance. Would you believe Reliant built the Group B rally RS200 for Ford!

Thanks for all the info guys - I'm going to go ahead and order a set of front wings for the Maxi. With all the info I have received and the articles Erik pointed me to I expect the Maxi wings to be a good fit.
 
As far as I remember, Reliant did such a bad job of assembling the RS200's for homolgation that they all had to be rebuilt prior to sale!
 
Stock:
rear track: 147,4 cm
front track: 134,6 cm

This is what I found in a Mille Miles for a Maxi:
rear track: 149 cm
front track: 139 cm

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Reliant probably kept leaving one wheel off - not used to working with four :lol: But seriously, I can imagine that they had quality issues.

Finally - Some actual measurements!! Many thanks for that Erik, I really appreciate your effort :!: I scoured the Maxi "Catalogue de Piéces Compétition" but it seems to be a book of assembly drawings to aid the mechanic, rather than a catalogue of data. Useful nonetheless, and clearly illustrates that the Maxi differs in many ways from its predecessors.

One of the first jobs that I have tackled on my new panels is to replace the smallish recess for the fuel cap with a larger one to accommodate my larger/tapered fuel filler neck for quick filling. I used the base of a paint tin as a mould which I removed after the glassfibre resin had set. I realise it's a bit larger than standard, but I need this on the car. Only other choice was to go through the window like on the IMSA car.
 
How to tell a real Maxi from a copy: the Maxi's fuel cap is on the left side. 8-)

Probably not important for your car. Just to let you know.

E
 
Another dead give away - the engines in the back.

You're right, not really important to me. This project began as a useful and fun way to dispose of a two door R5TS that was rotting away in my back garden. As is my way I've become more passionate about this project than I initially expected - probably to do with the amount of money I've poured into it - but I stick by my original statement that it's not intended to be an R5turbo, it's still just a bit of fun.

Today I received my Alcon four-pot calipers and 280mm rotors for the front of the car. Yummy. Fully laden I am sitting at about 220kg per front wheel, so four-pots and 280mm rotors are more than sufficient. Besides, not enough room for anything bigger inside the 15" Gottis.
 
Engine and gearbox position is now finalised, and I have begun the manufacture of the firewall and floorpan from aluminium treadplate. Looks a bit kitch, but makes a good non-slip light weight practical surface. Should be easy wash off the blood. One question I was asked is will I do the door cards from treadplate. Hmmmm....

Two bits in this picture are actually from an R5 - the rubber boot around the gear lever and the 20mm plastic plug blocking the access hole to the gearbox.



Most of the GRP panels are now fitted. They're either bolted or rivoted in place at the moment, but I'll be using a mastic type sealant/glue in addition when I fit them permanently. I've made up my front and rear bumper brackets from aluminium, I must say that I enjoy working with this material. It'll never rust! The two doors and rear hatch will shortly be sandblasted down to bare metal. There is some minor rust in these parts, but nothing that can't be managed. I'm still considering skinning the doors in aluminium. Easy to do. Note the Sparco steering wheel and aluminium dashboard. I've bought a set of VDO instruments that I'll fit in due course.



Front wings are now on order. I'm rather pleased that the Maxi wings will fit over my larger front trackwidth. I've decided not to replicate the Maxi5 as it will serve no practical purpose on the track. I'm not even going to fit the front spot lights as they equally serve no purpose on a track car. I'll probably cut out the profile of the spots from the front bumper, similar to the IMSA R5 Le Car front bumper.
 
The three master cylinders (front brake, back brake and clutch) are now attached to the outside of the firewall. The fluid bottles are mounted remotely from the cylinders and are easily accessible. The gap between the two on the right accommodates the end of the plenum chamber.



The view under a rear wheel arch is not quite what you would expect of an R5. The damper is an adjustable Koni and usually finds application on the Opel Corsa. The rear brake discs will be upgraded in due course. After sanding down the welds the aluminium will get a coat of etch primer, followed by a thick coat of polyurethane rubber.
 
Firewall, floor and wheel-arches are more or less finished. This was a time consuming job due to the number of fiddly shapes that had to be cut and welded into place. I've built in an access hatch behind the seats to get at the fuel tank if need be. Only plate that isn't finished is directly below the passenger seat and this is due to not being able to get a second Sparco Evo I seat. Plenty of Evo II's and III's around (gives you some idea of the size of the average arse over here), but no Evo I seats, so I have one on order. Once I get the seat I'll install the seat brackets that connect to the chassis, not the floor. Given how narrow the car is, the drivers seat must be in position in order to fit the passenger seat. The handbrake is straight out of an R5. 'May seem like there are minimal Renault parts in this car but I'm actually quite nostalgic about getting as many Renault parts back into the car as possible. The gear-knob, for example, is a vintage wooden knob with the old Renault logo from the fifties that I picked up at a flea market.



To get access to the rear suspension and differential the plate in the rear compartment can also be removed. Note the four mounting points for the seat harnesses protruding through the floor. These are likewise attached to the chassis. All aluminium aft of the footwells will be primed and painted yellow to match the car. The point of the aluminium is reduced weight, not to make it look, well, like it does.



Finally the wheel-arches and underside of the floor are rubberised to avoid stone damage and to deliberately detract from the aluminium finish. The airvents on the rear panels will be used to duct air through hoses to the brakes and wheel bearings (so at least they will serve some practical purpose). The matt black rubber finish will make it less noticeable that there is not too much going on behind those grilles!
 
I can make no further progress sealing up the body and chassis until I have the second Sparco Evo seat. Since I last posted I've installed the battery box just above the differential and installed a utility box with lid in the floor just behind that - somewhere to keep a few spare bits and pieces if need be. The body is therefore almost fully prepared ready for final assembly, during which I will attach all panels for the last time, and then begin final sanding and painting. With the rains now arriving final painting will surely be delayed.

In the mean time I have begun final assembly of the 3SGTE engine. Next time the engine goes back in it will be for the last time. I've lost count of how many times I've had this engine in and out taking measurements and planning components and the body around it. The 3S cylinder block is populated with Wiseco forged pistons, Eagle forged connecting rods, ACL big-end and main bearings, ARP main and big-end bolts, custom oil pickup and a custom aluminium sump. Note the oil injectors that are tapped into the oil gallery. These squirt oil up at the underside of the piston crown and are a special feature of the 3SGTE engine. The block is of cast iron, but surprisingly small and light, getting most of its strength from its ribbed design.
 
Second Sparco Evo seat finally arrived. I welded in place the seat brackets last weekend. The passenger seat sits slightly forward of the drivers seat. This has to be the case else the shoulder supports collide. Ironically, the factor that determined the final resting place of the gearbox and engine was the position of the seats. If I had moved the gearbox any further back I would have had to push the seats apart to fit the gearbox between them, in which case the seats would have been outside the frame of the doors. And the seats were as far back as they can go with the fuel tank and differential sandwiched behind them. As you may well guess, the Prop-shaft is pretty short.

I'm still looking to name this car if anyone has any further suggestions. Thanks Erik for yours.

I discussed my "ÜbeR5" idea with a German colleague who explained the meaning of the word using the sentence "Deutschland über alles". OK, now I get it. I don't think I'll be putting that word down the side of my car! Seems someone infamous may have already popularised that word. My German colleague suggests that I don't use it. I guess we're less sensitive to European issues down here in the South.

So, for what it's worth I have managed to come up with something in French. Not the best, so I'm open to suggestions ...
 
If you don't like the colour yellow, then look away now ...



The firewall and floorpan is entirely handmade from aluminium. The battery box looks a bit odd protruding through the floor, although the battery is a lot smaller than the box, the remainder taken up by a polyurethane sponge padding. There is ample space between the top of the battery and the lid for the connectors, cables and more sponge padding, so the battery (and hence its mass) is not raised as high as initially appears. I shall now begin the installation of the fuel and brake lines.
 
One of the local events in which I was interested in entering this car is the "King of the Mountain" hill climb, at the Gydo Pass in the incredibly beautiful Ceres area of the Western Cape. Unfortunately I am so far behind with this project that it was just not possible this year. Good thing too, as it appears to have turned into something of a disaster reminiscent of Group-B. Full story here:

http://www.wheels24.co.za/Content/N...-0001 12-01/Crash chaos at mountain race#form
 
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