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T5 engine conversion 2.5 to 1.9

Printed From: The Brick-yard
Category: T5 Section
Forum Name: T5 Chat
Forum Description: Forum for T5 specific chat
URL: http://www.brick-yard.co.uk/forum/forum_posts.asp?TID=94695
Printed Date: 28 Mar 24 at 14:48
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com


Topic: T5 engine conversion 2.5 to 1.9
Posted By: rob1927
Subject: T5 engine conversion 2.5 to 1.9
Date Posted: 06 Oct 21 at 20:27
Hello everyone. 

My 54 plate T5 looks like it’s engine needs replacing, it currently has a 2.5 axd engine that is goosed. The gearbox is 6 speed automatic. 

I’m looking to replace the 2.5 engine with a 1.9 


Will a 1.9 engine work with the existing 6 speed automatic gearbox?

Is it a straight swap?

Are any conversion parts needed?

Many thanks,


Rob. 



Replies:
Posted By: Idris
Date Posted: 13 Oct 21 at 11:44
From what I know (I own a 1.9 and I've worked of friends 2.5's).

Not a straight swap. Different for most things.

Hopefully somone else will be along on the bellhousing - AFAIK the 2.5s are different to the 1.9's but the 2.0 (T5.1 etc.) is the same as the 1.9.

Engine mounts are different. 

You will need the ECU and engine harness from the 1.9 at the very least.

Unless the 1.9 is remapped it will be slow compared to the 2.5 by quite some margin.




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