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General Big Fiat

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General Big Fiat

Got loads done the last week or so. The gearbox is back from A1 Transmissions in Bolton having been rebuilt and the new diff installed, and whole lot is now back on. The uprated driveshafts are rebuilt with Punto 75 tripods and new boots and are back in place.

The gearchange cables have been rerouted inside in preparation for the selector being moved. This will place the gear lever quite a bit higher in the cabin which creates an opportunity to shorten it to reduce the throw. Once the new knob arrives that too will be fitted.

All the old fuel lines are now off too in readiness for the new braided fuel line run in side.

gearbox.jpg


driveshafts.jpg


More pics in the build log on the website.

Cheers, John
 
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ooohhhh, looking nice and clean :eek: :D

I really like what your doing with this car....is it off road only?

The braided fuel hose, please tell me its not this crappy stuff most places sell? High pressure hose with a stainless sheath....that stuff is crap imho, a paint to cut, teminate, and looks rubbish.

Are the driveshafts just modified or bespoke? How are they uprapted? The material? diameter, or the splines?


You know how the cups are fitted? My 100hp box came without an inner cup :( Can you pull them off by hand or have I got a circlip floating around on the inside?!

Cheers,

Kristian
 
kritip said:
The braided fuel hose, please tell me its not this crappy stuff most places sell? High pressure hose with a stainless sheath....that stuff is crap imho, a paint to cut, teminate, and looks rubbish.
Click to expand...


i think it looks alright, to cut you wrap it in tape and saw it or use a sharp chisel.

But the little wires hurt like f*** when they stick in your fingers.
 
The car is a competition car, but is fully road legal.

With regard to the braided hose, use heatshrink on the cut ends of the stainless sheath. Alternatively you can spend a fortune on aeroquip fittings. For me its simply there to do a job i.e. meet MSA regs.

Drive shafts are stronger with bigger splines at the gearbox end to take the larger Punto75 tripods. The diff obviously has bigger cups to match.

John
 
Got the gear selector finished and fitted tonight. Moving the selector inside allows about 12cm to be lopped off the stick, and the result is a really snappy gear shift. Well worth it, although i'm not sure the cruisers amongst you will want the resulting 'industrial' look!

gearselector.jpg


There's more pics in the build log on the website. So just the new front brakes to fit and the fuel lines to run inside and i'm done for the winter.

Cheers, John
 
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nitrane.co.uk said:
Got the gear selector finished and fitted tonight. Moving the selector inside allows about 12cm to be lopped off the stick, and the result is a really snappy gear shift. Well worth it, although i'm not sure the cruisers amongst you will want the resulting 'industrial' look!
Click to expand...

You know, that's the cleverest thing I've seen in ages! :worship:But I'm sure the cruisers will put a polycarbonate gate on it and microswitches, so that a different colour neon comes on depending what gear you're in!:rolleyes:
 
I love it (y)

Though in a road going car I would box it in some carbon get a universal rubber boot from kit-car soulutions & then aesthetically would please the majority, but the function is what lead you there. I find the Cinq change pretty sloppy, very noticeable when going from the Ignis to the Cinq as it has a short, precise and mechanical feel to its change.

Excellent work as always John.

Aaron.
 
J333EVO said:
Though in a road going car I would box it in some carbon get a universal rubber boot from kit-car soulutions & then aesthetically would please the majority, but the function is what lead you there. I find the Cinq change pretty sloppy, very noticeable when going from the Ignis to the Cinq as it has a short, precise and mechanical feel to its change.
Click to expand...

Sounds like extra weight to me... ;) The change is much better simply for shortening the throw, but it does seem to have a clunkier reassuring feel to it as well.

John
 
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The BIG Fiat sprang back into life today. Everything's bolted back on, plumbed in and bled up. I only had chance to run it up the road, but first impressions are just how quickly it picks up, and also how noisy it now is. There's a lot of straight cut transmission whine which of course is not a problem for me, but you wouldn't want this in a pure road car.

aliveagain1.jpg


aliveagain2.jpg


Cheers, John
 
The other problem for a road car is that even with the highest final drive ratio set listed even on 195/45R15 tyres 5th gear will be about 6.5 to 7% lower than on 175/50R13 tyres. Great for low speed acceleration but for fuel economy etc not so good.
 
I think, and from bitter experience know, that the most difficult thing to contend with in a FWD car with a tight diff, is the effect on the muscles in the forearm.

For a red blooded right handed male, the comparative weakness in the left forearm can be quite a handicap.

(In other words, the steering is bloody heavy)

Cheers

D
 
Probably the only benefit of the steering rack's long gearing is that it shouldn't be too bad. Time will tell.

There doesn't appear to be a feasible lsd option for a road car - the only other manufacturer I found was Colotti, and their cost is quite a bit more. They do a ATB-type diff though which may be better for a road application.

John
 
Yeah, I looked into an LSD with road gearing and it came out silly expensive. Adding in the brakes I have I decided that sticky 205/40R16 tyres was a cheaper solution to the problem and more in keeping with what I want my Sei for.
 
StoneNewt said:
Yeah, I looked into an LSD with road gearing and it came out silly expensive. Adding in the brakes I have I decided that sticky 205/40R16 tyres was a cheaper solution to the problem and more in keeping with what I want my Sei for.
Click to expand...

For my requirements that would solve one problem (grip) but be counter-productive for the other (gearing).

John
 
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