Interfence Engine - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 11-20-2006, 01:53 AM
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Interfence Engine

Hi Guys,

I am new to the forum, I just joined almost a week ago & I hope we can all help eachother to know more about our Bimmers .
I want to know if any of you guys have the E30 complete service manuals as I like to do the stuff in the car myself & this will help me alot using the D.I.Y's.
Also I want to ask if someone knows if the M40 1.8L engine is an interference engine or not and whats the millage for changing the timming belt & the pulleys.

Thanks Guys & hope to hear from you soon

Beeso
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#2 (permalink) Old 11-20-2006, 04:49 AM
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It uses a timing chain, not a belt, and yes, all bmw engines currently in production and as far back as I can remember have been interference engines.

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#3 (permalink) Old 11-20-2006, 06:02 AM
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First thanks for the info about the interference engine part but I am sorry to tell that you are wrong about this but the 1.8 L engine M40 is with belt not a timing chain as i checked it by myself, anywayz thanks for the advise.

Please check the link below

http://www.motormec.co.uk/parts/belt.jpg

Timing Belts
Timing Belts,Rollers and Tensioners.
Genuine BMW or Original Contitech Belts plus Original Manufacturers Rollers and Tensioners.
Conti M40 Timing Belt 15.66 plus vat
BMW M40 Timing Belt 17.62 plus vat
Tensioners from 9.82 plus vat
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#4 (permalink) Old 11-20-2006, 02:54 PM
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Smile Welcome

Welcome aboard!

My two cents:

Yeh my old brand new crate M20B25 2.5 liter i motor has a belt with tensioner.
Not sure if I can convert to a chain? would be nice.
But anyway for an E30 get the Bently manual, there is no substitute.

or the OEM manuals on CD off ebay. havent tried this yet.
What are you working on a 318i, 318is or M3?

Cheers,
Richard Fitz
'87 325is Delphin Metalic

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#5 (permalink) Old 11-20-2006, 07:41 PM
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The M10 4 Cylinder 1.8L has a timing belt, it is an interference engine. (it's basicly the m20 with the last 2 cyl cut off.) Used in the E21.

The M40 4 Cylinder DOHC (1.8 or 1.6) has a timing chain, it is an interference engine.

Note: ALL "stock" e30 4cyl motors have a timing chain.
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#6 (permalink) Old 11-20-2006, 09:19 PM
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Cheers,
Richard Fitz
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#7 (permalink) Old 11-21-2006, 02:01 AM
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Thumbs up

Thanks Guys for your help & support.

Rfitz25, My car is currently an OEM 318i but there is a project that i might start soon if I have enough time to dedicate to it, which is installing a turbo and i am currently looking at the mods required in the exhaust manifold, oil lines, optimum Turbocharger size T28, Oil pressures for the waste gate & the BOV...........etc. and i hope i have the time to finish this study and gather all the info required to do this project to be able to do it.
If anyone of you guys have any experiance with installing a turbocharger in an OEM engine that would help me alot.

Have a nice day guys & keep the good stuff going
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