BMW Related News - E90 320Si

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E90 320Si

Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: General Forums
Forum Name: BMW Related News
Forum Discription: News About The BMW Group
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=24837
Printed Date: 29-April-2024 at 13:54

Topic: E90 320Si

Posted By: T.J.
Subject: E90 320Si
Date Posted: 05-December-2005 at 07:57

BMW has announced a limited edition homologation version of the 3-series powered by a hand-built, high-revving four-cylinder engine.

The �25,000 320Si has been manufactured to meet FIA homologation regulations for the 2006 BMW World Touring Car. Just 2600 will be built for sale worldwide and 500 of those will be offered in the UK.

The engine delivers 175bhp and 148lb ft of torque � 25bhp and 1lb ft more than a 320i - and redlines at 7300rpm. The 0-62mph time is a modest 8.1sec (1.2sec faster) and it reaches a 10mph faster maximum of 140mph.

BMW says the 2.0-litre engine will be hand-built at its Hams Hall engine plant near Coventry. Significantly modified, it uses bigger inlet and outlet valves, a higher compression ratio (10.5:1 to 11.0:1) and the pistons now run in aluminium-alloy liners.

The cylinder bore has been increased by 1mm to 85mm and the stroke reduced by 2mm to 88mm. The engine also uses a conventional throttle system in place of BMW�s valvetronic induction set-up. The cylinder head is cast at its Landshut foundry alongside F1 cylinder blocks. The carbon fibre engine cover is said to save 10kgs of weight in the nose.

Based on an M-Sport 3-series four-door saloon, the 320Si is expected to start reaching its first owners next Ap

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Mazda 6 MPS
S1 Elise 135 Sport
Alfa Romeo 159 Sportwagon
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Formerly E39 TDS, E36 M3, E36 328i, E34 525i, E34 518i

Replies:

Posted By: mikerd4
Date Posted: 05-December-2005 at 08:34

10kgs saved from the engine cover?!

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Posted By: Dergside
Date Posted: 05-December-2005 at 08:38

8.1 to 62 is hardly in the pocket rocket category. The torque improvement is hardly worth the effort in hand building the engine??!

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Now: BMW 523i SE '00, 318i SE - e91 '07, 325i Coupe '93.

Prev:
e46 328i SE Touring, 330Ci, 318Ci.
e39 523i SE.
e36 325i Coupe *2, 323i SE, 316iSE.
e30 325iSE 2dr, 320i Conv, 320i 2dr, 316i.

Posted By: T.J.
Date Posted: 05-December-2005 at 10:38

I hear ye! Tis a queer yoke... maybe the homologation bits are only of any use for Touring car tuning. The real indication is the torque output I think : Only 1lb/ft. Gaining bhp is 'easy' (as long as the engine can deal with it) cos tis a product of torque & revs, and the rev limit is raised by 700rpm.

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Mazda 6 MPS
S1 Elise 135 Sport
Alfa Romeo 159 Sportwagon
http://www.bmwcarclubireland.com/gallery/displayimage.php?pos=-3254">

Formerly E39 TDS, E36 M3, E36 328i, E34 525i, E34 518i

Posted By: sleeper
Date Posted: 07-December-2005 at 06:36

tut tut, that is what was in my link!