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Old 01-03-2021   #16
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Quote Originally Posted by AndyRKett View Post
There is a big difference in what power an engine block can take and what power the standard internal components can take. What i would say is you donít just take a non turbo car and bolt a turbo on. Nor would you take a turbo car and tweak the boost up to 500hp

Youíre never going to achieve anything like 500hp at the wheels with a standard engine, youíll be needing to strip that down to the block and start from the bottom up with many highly engineered components. You may even need to modify the engine block with structural reinforcement, Iím sure that fiat never designed that engine to take anything like that sort of power.

To put that in perspective the Bugatti EB110 with 3.5L V12 and 4 turbo chargers, only just saw that sort of power, with the same sort of technology of that era.

Also anything with 500hp FWD is basically going to be undrivable.

Youíd be better off setting your sights a lot lower and working up from there, maybe starting with getting a car to begin with.
Well ive seen quite a few people say that the standard block is pretty sturdy and can handle a fair bit of boost (the turbo model anyway) with just under 90% stock internals (as said here in car throttle on their video review of the coupe turbo https://youtu.be/PD4p4VmKIGM), the money part wont be an issue once i get this apprenticeship neither will getting the car, and as for the "undrivable" part, i didnt wanna go into this without thinking of upgrading the diff
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Old 01-03-2021   #17
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Re: Turbo a NA model

Quote Originally Posted by Tim4tom1c View Post
Well ive seen quite a few people say that the standard block is pretty sturdy and can handle a fair bit of boost (the turbo model anyway) with just under 90% stock internals (as said here in car throttle on their video review of the coupe turbo https://youtu.be/PD4p4VmKIGM), the money part wont be an issue once i get this apprenticeship neither will getting the car, and as for the "undrivable" part, i didnt wanna go into this without thinking of upgrading the diff

Uhh Huh

Isn't an apprenticeship minimum wage? I dunno how old you are but I believe its less than £7 and hour if you're under 20 and even less if you're under 18?


Quote Originally Posted by AndyRKett View Post
maybe starting with getting a car to begin with.
Maybe start by getting the apprenticeship, once you have some money coming in it might adjust your sights.
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Old 01-03-2021   #18
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Re: Turbo a NA model

Quote Originally Posted by Tim4tom1c View Post
Well ive seen quite a few people say that the standard block is pretty sturdy and can handle a fair bit of boost (the turbo model anyway) with just under 90% stock internals (as said here in car throttle on their video review of the coupe turbo https://youtu.be/PD4p4VmKIGM), the money part wont be an issue once i get this apprenticeship neither will getting the car, and as for the "undrivable" part, i didnt wanna go into this without thinking of upgrading the diff
A Coupe with stock internals will be past their best by now, we are talking 20 year old plus metal. Trust me, the Coupe fraternity that I communicate with will have a different story than what you think, not knocking you down, Iím just being realistic. We have a mechanic who has dealt with Coupes since they appeared. Going 500BHP needs a bit more thought is all Iím saying. Good luck though. Please keep in touch and come back with your results.
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Old 01-03-2021   #19
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Quote Originally Posted by AndyRKett View Post
Uhh Huh

Isn't an apprenticeship minimum wage? I dunno how old you are but I believe its less than £7 and hour if you're under 20 and even less if you're under 18?




Maybe start by getting the apprenticeship, once you have some money coming in it might adjust your sights.
Well im 17 and this apprenticeship will bw coming in very soon, idk houely wage but ik ill be making £145 (minimum) a week... looking at it now 7k a year will definitely not be enough to build it anytime soon, but luckily this is meant to be a very long term project so itll after 3/4 years it could get somewhere good if i do extra jobs n **** too lol
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Old 01-03-2021   #20
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Quote Originally Posted by jimboy View Post
A Coupe with stock internals will be past their best by now, we are talking 20 year old plus metal. Trust me, the Coupe fraternity that I communicate with will have a different story than what you think, not knocking you down, Iím just being realistic. We have a mechanic who has dealt with Coupes since they appeared. Going 500BHP needs a bit more thought is all Iím saying. Good luck though. Please keep in touch and come back with your results.
Im willing to try! All i wanna know is: does the NA motor have same block and internals as the turbo one and are the gearboxes the same?
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Old 02-03-2021   #21
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Re: Turbo a NA model

Quote Originally Posted by Tim4tom1c View Post
Well im 17 and this apprenticeship will bw coming in very soon, idk houely wage but ik ill be making £145 (minimum) a week... looking at it now 7k a year will definitely not be enough to build it anytime soon, but luckily this is meant to be a very long term project so itll after 3/4 years it could get somewhere good if i do extra jobs n **** too lol

17!! My coupe is 22 years old All I can say is you have a very long way to go, it will indeed be a learning curve, but I do wish you the best and good luck on your project. Iíve known well up to date Coupe owners having a project on the go for several years. Not an easy car to work on, even changing the engine oil and filter is a lengthy affair.
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Old 02-03-2021   #22
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Quote Originally Posted by jimboy View Post
17!! My coupe is 22 years old All I can say is you have a very long way to go, it will indeed be a learning curve, but I do wish you the best and good luck on your project. Iíve known well up to date Coupe owners having a project on the go for several years. Not an easy car to work on, even changing the engine oil and filter is a lengthy affair.
Thank you ill keep the project up to date on here
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Old 04-03-2021   #23
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Re: Turbo a NA model

So an alternative view.

I bought new a 20V NA Coupe after having driven both NA and Turbo versions.

I my opinion the NA is the more refined, smoother and better low end pickup (no turbo lag).

Now the Turbo Coupe was well credited with probably the best low down performance turbo of its day however still not as good as the NA.

The turning circle of the turbo model is also rubbish. We go to the Italian Dolomites every summer (bar eye surgery year and covid) and those tight hairpin ends, poor turning circle, no low pickup later followed by "boost" into the opposing wall does not make for pleasant driving.

As the OP can not afford a turbo model outright and is looking for a project then I suggest fitting an electric blower to the NA model. I started a project like this on my Uno SX but gave up when I stopped motorsport (sprinting and track days).

The maths for the project is fairly straight forward (5 pots, 7K rpm, etc) and a modest 0.5 to 1 bar is possible and certainly won't cause engine issue.
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Old 04-03-2021   #24
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Re: Turbo a NA model

Quote Originally Posted by s130 View Post
So an alternative view.

I bought new a 20V NA Coupe after having driven both NA and Turbo versions.

I my opinion the NA is the more refined, smoother and better low end pickup (no turbo lag).

Now the Turbo Coupe was well credited with probably the best low down performance turbo of its day however still not as good as the NA.

The turning circle of the turbo model is also rubbish. We go to the Italian Dolomites every summer (bar eye surgery year and covid) and those tight hairpin ends, poor turning circle, no low pickup later followed by "boost" into the opposing wall does not make for pleasant driving.

As the OP can not afford a turbo model outright and is looking for a project then I suggest fitting an electric blower to the NA model. I started a project like this on my Uno SX but gave up when I stopped motorsport (sprinting and track days).

The maths for the project is fairly straight forward (5 pots, 7K rpm, etc) and a modest 0.5 to 1 bar is possible and certainly won't cause engine issue.
All Us Coupe owners are well aware of the pitfalls on owning one, or should be . but when you get behind the wheel you just forget and land with a big smile, however thatís by the by. The OP is just 17 and if he really does come out the other side with what he wants, getting insurance will be very difficult to say the least for starters The goal here is 500 BHP, highly modified to achieve this would be a fair comment.

As I said earlier, there are some well knowledgeable Coupe owners that have had similar projects and eventually get there, but usually years later with empty pockets. Another saved Coupe is always a good thing in my book. Time will tell.
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Old 04-03-2021   #25
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Re: Turbo a NA model

Quote Originally Posted by jimboy View Post
All Us Coupe owners are well aware of the pitfalls on owning one, or should be . but when you get behind the wheel you just forget and land with a big smile, however that’s by the by.
Same for the 130TC

Quote Originally Posted by jimboy View Post
Coupe owners that have had similar projects and eventually get there, but usually years later with empty pockets. Another saved Coupe is always a good thing in my book. Time will tell.
Agreed. I'm very much into keeping cars I love "standard" because I keep them for a long time and going non standard with porting, custom/different valves, valves seat profiles, skim cam carriers to use different cam shafts, etc. in a NA engine is not only expensive but difficult if not almost impossible to put it all back as it was.

The beauty of an electric blower, or even a ram air is that everything except the intake can be kept standard. For a young guy this would make a nice project that can be designed and documented for any future employer. As for electric/computer controls then these days we have Arduino and R-Pi kits with all the functions one would need make a good system.

If the Digiplex unit in our 130TC ever goes bang (the 130TC digiplex is unique and not common with other more widely used ones in other Fiat models) then I'll look at repairing it. If that is not possible then I would source a bog standard one just to keep the car running while I work on an Arduino replacement.

I love these older cars as DIY electric projects and repairs are so much easier than these modern 10, 15, 20+ computers to drive everything right down to the back scratcher which is something you don't need in a 130TC as the car does it all
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Last edited by s130; 04-03-2021 at 11:42.
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Old 04-03-2021   #26
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Re: Turbo a NA model

To the OP.

Whichever Coupe you buy, properly look over it. There is a lot of duds out there pretending to good Coupes. Take in what Jimboy has said as I would of said the same. Also to plug another forum, your knowledge base will be far improved by visiting https://www.fiatcoupeclub.org/forum where I and Jim linger from time to time.
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