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Registered
Join Date: Feb 2004
Location: Summerland B.C Canada
Posts: 648
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Is my timing belt idler pulley too small??
the engine is out of an '84 944, the idler pulley doesn't even touch the timing belt. will this be an issue? the water pump has been updated.
Thanks Kevin 
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'73 914 2.0L |
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06-28-2008, 07:24 PM
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Join Date: Apr 2006
Location: Montgomery
Posts: 101
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It looks like it is to me. Unfortunately, I don't have a picture of mine straight on like your picture, but it looks to be way too small. Where did you get the pulley at, or did it come that way?
Here's a link to a thread that has a picture of mine in it: Timing Belt Tensioning Scroll down about halfway to see the pictures with the idle pulley in it. |
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06-28-2008, 07:48 PM
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Join Date: Aug 2007
Location: Sweden
Posts: 215
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Hi! I see that you have got the new type of WP. That one needs a pulley of a 46 mm in diameter. The present one in picture is 32 mm. Strange that you or PO did not see this when changing WP and/or cam shaft belt. It is an easy change how-ever. Buy that new pulley and you will be fine
 --------------------------------------------------- Lapponia 1984 944/na |
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06-29-2008, 01:44 AM
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Posts: 474
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This is a great reference for timing/balance shaft belt specifications
http://arnnworx.com/tensioningbelts.htm
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 1990-Porsche 944 S2 Project Hair Loss 2001-Saab 9-5 BSR Best car I have owned 2008-BMW 328i (Just another beamer) |
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06-29-2008, 03:19 AM
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Join Date: Aug 2007
Location: Sweden
Posts: 215
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Oh sorry! I mean that idler roller to the right of WP pulley should be 46 mm instead if 32 mm as it is now in picture
 ------------------------------------ Lapponia |
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06-29-2008, 03:59 AM
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Join Date: Mar 2002
Location: London, UK
Posts: 415
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On later model there are 2 idle pulleys. The one you probably have is the one that is fitted near the tensioner (944 105 241 03) yellow arrow. You probably need (944 105 241 02) which I think is common to all, red arrow.
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06-29-2008, 04:13 AM
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Just thinking out loud
Join Date: Nov 2001
Location: Close by
Posts: 6,884
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Mine looks the same as yours. After all these years and no problems, I intend to leave it that way. It doesn't serve much of a purpose unless your belt is crazy loose, and at that point, you have a larger issue than the roller.
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83 944 91 FJ80 84 Ram Charger (now gone) |
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06-29-2008, 05:22 AM
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