Fiat 20v turbo engine change - Alfa Romeo Forum
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(Post Link) post #1 of 17 Old 02-10-07 Thread Starter
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Fiat 20v turbo engine change

Hello i was wondering if anybody had much knowledge of fitting a fiat 20v turbo engine into a 156 (1999 2.0). I belive it to have the same block as the 2.4 jtd fitted in later 156s so it must be possible. Does anyone know of somebody who has already done it. I would imagine the main issues to be electrical. Any help appreciated. Cheers Rich
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Re: Fiat 20v turbo engine change

I'll have a go although I haven't gone near this job.

I reckon you should take the engine and box from the Coupe together with ECU, all of the airboxes, rads, intercooler, ac pump, etc.

Keep the steering/suspension on the 156.

You will possibly need mounts or a subframe from a 156 2.4 JTD.
On the Coupe only one mount meets the subframe- the one under/behind the engine. I think I've seen one in a similar position on a Twinspark 145 Cloverleaf.

There are 2 that mate with the inner wing and a reaction strut.

Driveshafts I'm not sure about. Maybe one or other will fit or you may need to cobble something together. The Viscodrive on the Coupe may mean that you can't get something of the right length to go in a 156.

Good luck with it. I have some photos of Coupe 20v/T engine mounts if they help at all.
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Re: Fiat 20v turbo engine change

Hi tri land, I'm working on this one myself at the mo. Picked up a coop with a blown turbo for £400. Should give most of the parts needed. I have removed the engine and box along with the rad, oil cooler and intercooler. Dont forget the ECU and the 2 wiring looms.
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Re: Fiat 20v turbo engine change

Thanks for the replys let me know how you get on with your conversion. It definatly something id be interested in doing as long as it can be done with standard Alfa and fiat bits as the bespoke parts route dosent seem desirable if covering high miles. I am hoping when my TS dies (shouldnt be to long now!) i could have all the bits together.
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Re: Fiat 20v turbo engine change

PM AJCarter...he has done this to a 145. He is also a very helful chap.
 
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Re: Fiat 20v turbo engine change

AJ fitted the 16v engine to his 145 which I assume has a different block to the 20v.
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Re: Fiat 20v turbo engine change

The 16VT should be a much easier swap than the 20V IMO, as it is similar sized and engine mounts are similar.
The only problem is that decent secondhand 16VT engines are becoming very rare.
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Re: Fiat 20v turbo engine change

Thanks Roswell...I didn't read the thread title properly

Did they do a 20v turbo then? I thought that the 20v was NA and the turbo was only in 16v form. I guess I am wrong!
 
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Re: Fiat 20v turbo engine change

Quote:
Originally Posted by alfa_147_jtd_16v View Post
Did they do a 20v turbo then? I thought that the 20v was NA and the turbo was only in 16v form. I guess I am wrong!
4 cylinder 2.0 16v & 2.0 16v Turbo

were replaced by

5 cylinder 2.0 20v & 2.0 20v Turbo
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Re: Fiat 20v turbo engine change

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Originally Posted by symonh2000 View Post
The 16VT should be a much easier swap than the 20V IMO, as it is similar sized and engine mounts are similar.
The only problem is that decent secondhand 16VT engines are becoming very rare.
I think there is a fair bit of demand amongst Coupe owners for decent 20VT engines as well.

The 20v NA has a fairly ready supply of donor engines from the Fiat Bravo HGT and Marea.
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Bump. Is this transplant much harder than fitting a turbo to a Twinnie? If 20v turbo engines are hard to find could you source a std 20v and then fit a turbo? (Or is this just as much work as fitting a turbo to a TS?). Cheers!
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Quote:
Originally Posted by Shimmerydolmeo View Post
Bump. Is this transplant much harder than fitting a turbo to a Twinnie? If 20v turbo engines are hard to find could you source a std 20v and then fit a turbo? (Or is this just as much work as fitting a turbo to a TS?). Cheers!
You would need to buy a complete Fiat Coupe 20v turbo to use as a donor car. This would be the way I'd do it, rather than trying to turbo a normally aspirated engine.
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You would need to buy a complete Fiat Coupe 20v turbo to use as a donor car. This would be the way I'd do it, rather than trying to turbo a normally aspirated engine.
Sounds unreasonably expensive for a 2nd car. Project for the future I think.
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Sounds unreasonably expensive for a 2nd car. Project for the future I think.
Keep your eyes peeled for a rotten one with no MOT, that'd make the perfect donor.
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Keep your eyes peeled for a rotten one with no MOT, that'd make the perfect donor.
Cheers I will, have to pay off some credit card debt from the GT first though. I have no idea what AL would charge for a project like this!
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This is a very old thread...

Nowadays I wouldn't scrap a Fiat Coupe to fit the engine in a 156.

I would fix the Fiat up, as they are fast becoming rare and are gaining clsssic status. The 156 has some way to go yet, especially if it is anything other than a V6
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Quote:
Originally Posted by symon View Post
This is a very old thread...

Nowadays I wouldn't scrap a Fiat Coupe to fit the engine in a 156.

I would fix the Fiat up, as they are fast becoming rare and are gaining clsssic status. The 156 has some way to go yet, especially if it is anything other than a V6
Indeed. But if your 156 is truly a loved one and you want a project... plenty of fiat coupes for salvage and they're not exactly selling like hot cakes.
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