Technical Fiat 128 Coupe - Engine upgrade

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Technical Fiat 128 Coupe - Engine upgrade

dialup_2001

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The fiat now has 5 speed box, X1/9 engine, straight through exhaust and some nice seats and temporary alloys wheels until I find some Wolfrace Slot Mags or Cobra supaslots or equivalent.

Can you believe this car came with 5 spare engines!!!!!!!! Three spare carbs, 6 manifolds, hubs, glass, bumpers, trim etc etc etc!

I have bought a new Webber 36 down draught as a temporary carb as my 32DMTR34 is a bit worn out or just dirty.

I want to buy a twin IDF manifold and put some 40mm IDFs on it and uprate the camshaft and exhaust manifold, will this setup be good if I decide to turbo it one day??? Many thanks

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Very nice here are some of my 3p taken today will try to get some of my sl(y)
 

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Turbo with carbs is a messy solution. If you want to turbo it, use the Uno Turbo or Punto GT powerplants. You will need to convert to fuel injection, but it's not as difficult as you might think. Plenty of X1/9s have had the UT conversion done.

Cheers R

PS lovely cars everyone! My early Fiats were a 128, 128SL and 3P (converted to 1.6 TC), great fun but galloping rust! Great to see some are being preserved.
 
Nice 3P and Coupe

128cl
How do you find getting spares for these cars, I have two 3p's now. One is requiring a full restoration and the other is on the road, running like a dream
Do you have any more, would be interested in hearing from you

Regards,

Alan
 
Nice 3P and Coupe

128cl
How do you find getting spares for these cars, I have two 3p's now. One is requiring a full restoration and the other is on the road, running like a dream
Do you have any more, would be interested in hearing from you

Regards,

Alan
Getting any sort of body panels for these cars is always a struggle.
When panels come up for sale i alway buy them but mechanical are quite easy to get hold of.
I have at the moment 2x3p 2xSL 1x 128 special 1x 128 2 door
Regards Sid
 
These are getting rare cars, so nice to see it!!
Regards uprating. You really need to strengthen the shell, as it will be now very flexible due to age Try jacking the offside front up, and open the driver's door. If the door drops more then 10mm say, it wants all the spot welds second welding. The front end was always flexible, so strutbrace the turrets. Also, remember to uprate the brakes and suspension to cope.
All the power is in the head. So a good gasflowed head is a must. Many so called head tuners, mess the 128 sohc head up. Use someone like Competition Engine Service. They know this engine very well. Bottom end can by left alone, except for new uprated oil pump, new shells and a baffled sump if you intend to drive it rather quickly!! :D
The shape of the 128SL is one of my favourites. Its a pity, a fast version was never produced by Fiat.
Incidently, the 128SL had good gearing [later 128 3P was lower and slower], and would top 110mph, given a good run. This figure was virtually unheard of in 1971 for a 1300cc engine!! Only the Lancia Fulvia Coupe could keep up with it. Fords [10p in the swear box] Escort Mexico 1600, could only manage around 100mph!

Andy.:)
 
Well thanks for your advice, I went out and brought a Fiat Uno Turbo mk1 and took it and my 128 to Avanti Motorsport where they are rebuilding the engine to a high standard and the gearbox and swapping all including the brakes into the 128.
 
The same 1300 engine in a 1989 Uno 70SX ;)
Virtually the same engine. Earlier Weber 32/32 DMTR [128SL] was a better carb then the 30/32 DMTR [Uno SX]. 128SL had better inlet manifold.
128SL was 1290cc vs Uno SX 1299cc [early ones 1301]
Uno SX had much better gearing then Uno SL, and was much quicker through the gears. I had an Uno SX [F reg] back in 1996. Very quick little car, but an odd car. Clutch used was from a mk2 Uno!!!

Andy.:)
 
dialup_2001 said:
Well thanks for your advice, I went out and brought a Fiat Uno Turbo mk1 and took it and my 128 to Avanti Motorsport where they are rebuilding the engine to a high standard and the gearbox and swapping all including the brakes into the 128.
I can't let this one slide... You are putting the UT engine and brakes in a 128!:slayer: Wahoo, you can tell me what needs to happen because I am currently stripping an UT engine to stick in my sedan!
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Virtually the same engine. Earlier Weber 32/32 DMTR [128SL] was a better carb then the 30/32 DMTR [Uno SX]. 128SL had better inlet manifold.
128SL was 1290cc vs Uno SX 1299cc [early ones 1301]
Uno SX had much better gearing then Uno SL, and was much quicker through the gears. I had an Uno SX [F reg] back in 1996. Very quick little car, but an odd car. Clutch used was from a mk2 Uno!!!

Andy.:)

So if I could get hold of the 128SL carb and manifold then I should be able to get my Uno SX off the clock ;)

As far as I know, all SX Unos were 1301cc. The earlier 1.3 S and SL models had 1299, as did the earlier Turbos.

*Goes to check registration document*

Yup, my 1989 70SX has the 1301cc engine. Then again, Fiat played silly buggers with many parts over the lifespan of its earlier cars. They probably picked bits at random or whatever happend to be at hand when they were building them :p

Interestingly the earlier Uno 70 S and SL models had more power than the later 70SX, which sacrificed top end power for more torque. I think it did this by a different camshaft, though I wonder if the inlet manifold was also changed?

Lastly, yes, the 70SX Uno is a quirky little car. That's why I like it :) Five door hatchback, boxy styling, bonkers dashboard and revvy, growly little 1.3 engine. Goes well for an old hatchback and certainly surprises a lot of modern cars at the lights :devil:

By the way, what do you mean about it using a mk2 clutch? Mine has the Strada based bottom change gearbox so I would've thought the clutch was Strada/ Regatta based?
 
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