Shiny
This is my thread from 2008 when i had a NA and had the same idea - I was toying with the ideia of using a Eaton M45 Mini CouperS Supercharger...

http://www.fiatcoupeclub.org/forum/ubbthreads.php?ubb=showflat&Number=707260

... may be of some help

thanks mario

So here is another question - given that the 20v has too much compression as standard to run the 20VT turbo, what about running lower boost?

Maybe in the 180bhp - 200bhp zone, i'm guessing maybe 0.5 - 0.7 bar?

Not more than 0.5 definitely.

I did a couple of Mercedes charger conversion, and after 0.5 bar it was a major temp increase.

True.

But, with a 20VT rad, and an oil cooler conversion, might be back in the sensible range.

Or, what i've always considered doing since i got my 360 bumper, some sort of fibre glass ducting from the vents to the important stuff, to keep temps down a bit.

radiator and oil cooler will not reduce charge air temps,you need an intercooler for that.

Reckon the old FMIC will be needed......

So nobody liked my supercharged and turbo'd idea then ?

Aye. forgot to put + intercooler.

Although the more i consider 'tuning' the 20v engine, its seems more hassle than its worth.

Still pondering my options, but i think possibly something as drastic as a RWD/4WD tubular chassis type thing.

V6/V8 maybe.

For example - written off TVR Griffith/Cerbera V8, priced between 3 and 8k, aslong as chassis is still straight, everything else can go in the bin bar the chassis, engine and box, brakes, electricals etc.

With ALOT of blood, sweat and tears, you could retro fit a coupe over the top of another chassis, obviously removing floor, firewall etc and replacing.

Expensive too!

We'll see.

twincharging is badass,delta s4 styleeee

There is a fella who has built a twin charged integrale, pretty cool.

heres a twincharged engine on the dyno,badass
http://www.youtube.com/watch?v=uqg4SVFYRVI&feature=related

Ressurecting this thread with some info that may be of interest to anybody considering supercharging their 20V – or 16V for that matter.

I tune other makes of car besides Fiat Coupes but I very rarely mention them on fccuk. However, I’ll make an exception with the following because it is an example of the driving characteristics of well built, well tuned positive displacement supercharger conversion.

This particular conversion is on a 1.8 litre Renault Clio 16V. In fact the only supercharged UK mk.1 in existence.

Brief spec:
Opcon twin-screw supercharger (positive-displacement, similar to a Roots-type but more efficient)
Intercooler
Low comp pistons
Custom-made inlet manifold


This particular conversion is a draw-through setup, meaning the throttle body is placed in front of the ‘charger so the ‘charger ‘draws through’ it. The diagram illustrates the setup.



You might think that having to drive a great big supercharger, not to mention having the throttle body separated from the manifold by about 5ft of tubing and an intercooler, would hurt throttle response, in fact the complete opposite is true – the throttle response is instantaneous and the engine revs up with tremendous speed. Saying it revs like a motorbike really isn’t that much of an exaggeration.

How it drives:
This 1.8 litre engine makes 193 bhp @ 10psi – a fairly modest gain of 56 bhp from the official stock figure of 137 bhp. The way it makes that 193 bhp is the most impressive thing. Instantly accessible torque at any revs, from idle to redline – in this particular car you could drive off fast from a standstill in 5th gear. The power is also totally controllable and predictable; no lag of course, and no waiting to hit the boost threshold or come “on-cam”. I’d describe the driving experience as like having the same engine but twice the size. The engine er, kinda behaves in the same way - just, well, bigger!

Below is the dyno printout for this car. Below that is a N/A Clio I'd tuned previously; This time a 2 litre Williams, essentially standard bar fast-road cams: Comparing the two you can see that the Supercharged 1.8 consistantly makes around 30 lbs-ft more than the N/A 2.0 from 3000 rpm upwards.



Previously I suggested a centrifugal charger conversion would be best. Well, now having driven both, I’ve changed my mind A positive displacement 'charger conversion might be harder to build due to the size of the unit and the shape of some of the outlets. But for sheer torque and driveability, positive displacement can’t be beaten!

What are the valves like on the 16v? when I had my 19 16v I always remember hearing people say that the engine in early development stages was partially designed with a possibility for developing forced induction, but probably myth??

must admit the renault clio/19 16v's were not the most reliable cars although they were awesome drivers cars so long as you drove them to the redline any problems with upping the bhp? I know engine placement with the exhaust manifold close to the bulk head meant that a good condition cooling system was a must, thus mine never overheated.

I've never heard of the F7 engines being developed with FI in mind, but they do have sodium-filled exhaust valves and piston oil-spray bars.

My own 16v (1.8)Turbo made just over 200bhp @ 8 psi. One of the guys I know has a 250 bhp 2.0 and does does 12 sec. quarters. There have also been a few in the past making well over 300bhp. The engines can handle pretty big power - unfortunately the gearboxes can't! Even mildly tuned Clios start popping gearboxes like sweets when given a bit of stick.

As for reliability, well it's the reason I bought a Coupe. As standard the Coupe wasn't as fast or as good handling, but I quite enjoyed the novelty of not having to replace bits that fell off/broke/mysteriously stopped working every month!

I've had a Turbo booked in for the last month, but the poor guy's car keeps breaking down! Even last week he was on his way down to me when his gearbox gave in!

thanks for that honest answer, my 19 eventually started to have issues with 2nd gear synchro. I remember room being tight and on my friends clio 16v it was even tighter.
great handling cars and loved mine to bits despite being more tempremental than my 20vt

could consider one of these

http://cgi.ebay.co.uk/FIAT-PUNTO-COUPE-E...#ht_1505wt_1139

Anyone tried one of these? What supporting mods might it need on a 20v na?

Swin was joking! Those belong back on the bilge pumps or whatever they came from.

AA membership for when the fans restrict the air getting into the engine under moderate to high rpm and throw themselves into the cylinder head.

As was I

That advert should be reported to ebay