SpecBamf41 Posted February 4, 2012 Share Posted February 4, 2012 My friend and I just put his gst together and upon start notice the engine turned the opposite way we thought. Is this a big deal that the Tb is on backwards for rotation? BNR18g on 93oct Link to comment Share on other sites More sharing options...
Osei Posted February 4, 2012 Share Posted February 4, 2012 AFAIK every car in the world only turns in one direction.IE clockwise when facing it. The direction of the T belt is irrelevant, if you use the tooth count to set the belt. O. Link to comment Share on other sites More sharing options...
jamal Posted February 4, 2012 Share Posted February 4, 2012 the lettering on the TB will be the right side up when you're standing in front of the car looking at it, and the arrow will point toward the right, the way it turns. Link to comment Share on other sites More sharing options...
SpecBamf41 Posted February 5, 2012 Author Share Posted February 5, 2012 or toward the rear in a gst's case. but the question was still never answered, are the belts designed to spin a certain direction or are the arrows just there so that if you have to remove the timing belt for anyreason you can install it the same direction? if so my friend will just always install his backwards right. BNR18g on 93oct Link to comment Share on other sites More sharing options...
Osei Posted February 5, 2012 Share Posted February 5, 2012 The markings on a belt are designed so that you can line them up for timing purposes, as few if any are symmetrical. The belt itself doesn't care. Hope this answers your question. O. Link to comment Share on other sites More sharing options...
SpecBamf41 Posted February 5, 2012 Author Share Posted February 5, 2012 not all timing belts have marks. most have arrows. the arrows are what im talking about cause that if for the direction. this belt had no marks for alignment on the belt. its a Mitsubishi. BNR18g on 93oct Link to comment Share on other sites More sharing options...
johnegg Posted February 5, 2012 Share Posted February 5, 2012 if all the belts come with arrows then i would assume that direction does matter. belts with out timing marks have no reason for arrows except for direction of rotation. what engine, year, ?? you can probably swap it around in a couple of hours and then you do not have to worry about it any more. Link to comment Share on other sites More sharing options...
Osei Posted February 5, 2012 Share Posted February 5, 2012 What everybody seems to be missing is this. The markings of any type are put on after manufacture. In the case of Subu 2.2 belts, there are three. One at the crank sprocket and one each at the timing cover on driver side and the seam of the head and block on the passenger side. As such, when the arrow is facing to the right, the corresponding marks line up, since the marks are not the same distance from the center. The driver side is 40.5 teeth from the crank mark and the pass. is 44. If there were no markings, how do you put on the belt?, by counting teeth. If there was a faint arrow for rotation left on the belt,would it make a difference which way it was facing as long as the teeth count from center to the other marks were correct? I think not. O. Link to comment Share on other sites More sharing options...
SpecBamf41 Posted February 5, 2012 Author Share Posted February 5, 2012 its not a subie. it has no marks. just a arrow! idk how many time i have to say that. its a 1997 gst 2.0 turbo you know how tires are designed to rotate one direct for best traction. are belt designed to spin a certain direction to? i dont give a shit about the alignment marks or teeth count. this belt didnt even have those marks. just a arrow. BNR18g on 93oct Link to comment Share on other sites More sharing options...
Osei Posted February 5, 2012 Share Posted February 5, 2012 I realize it's not a Suby. Belts are not made unidirectional. If you want more peace of mind, call a dealer or belt mfg. customer service. O. Link to comment Share on other sites More sharing options...
I Donated broknindarkagain Posted February 6, 2012 I Donated Share Posted February 6, 2012 Or ask on a Mitsubishi forum? Most belts DO have timing marks regardless if what engine they are for. But the belt is likely fine how it is as long as the tooth count is right -broknindarkagain My Current Project - Click Here COME AND TAKE IT "The only thing necessary for the triumph of evil is for good men to do nothing." Link to comment Share on other sites More sharing options...
SpecBamf41 Posted February 6, 2012 Author Share Posted February 6, 2012 Ok perfect. and i would post on dsm talk but i like you guys. my friend is still getting used to the whole posting thing. its funny really, the difference in knowledge one has between posters and non posters. he just reads. thanks, we were thinking it was fine but i just wanted to make sure no one had any serious reason or any problems running belts backwards rotation wise. and yes timing was spot on. double check. car is running great. She spools much faster with that rebuilt 14b BNR18g on 93oct Link to comment Share on other sites More sharing options...
monkeyposeur Posted February 6, 2012 Share Posted February 6, 2012 When I replaced my timing belt I installed it with the arrows facing the 'wrong' direction. I couldn't stand it and took it off and installed it the right way. It would have driven me crazy, at least for a few thousand miles. Link to comment Share on other sites More sharing options...
Lsnaple Posted February 8, 2012 Share Posted February 8, 2012 ^Did you leave the timing covers off? Link to comment Share on other sites More sharing options...
monkeyposeur Posted February 8, 2012 Share Posted February 8, 2012 No, I installed it in the wrong direction and promptly removed it and installed it again with the arrows in the 'right' direction before I pulled the pin on the tensioner. My dad was helping me and thought that I was nuts, lol. Link to comment Share on other sites More sharing options...
jleighton88 Posted February 8, 2012 Share Posted February 8, 2012 or maybe you think there is no marks. maybe the marks ar onthe edge of the belt. you wouldnt be able to see them if the belt is backwards, just a thought. and no it doesnt matter. Link to comment Share on other sites More sharing options...
jazzymt Posted February 8, 2012 Share Posted February 8, 2012 AFAIK - there isn't a timing belt in the world that has directional teeth. I've used MANY different varieties of timing belts in other designs as an engineer - I've never seen one that was directional. Certainly at least - ours is symmetric. As far as the belt itself - tension is tension - it doesn't matter which end is action/reaction. As long as the cams are in the right place, you're good. The only reason for markings is to help align the cams (which requires a directional reference). [CENTER][URL="http://legacygt.com/forums/showthread.php?t=18504"]Subaru Plug & Play Aux-in Mod[/URL][/CENTER] [CENTER][URL="http://www.jazzyengineering.com"]www.jazzyengineering.com[/URL][/CENTER] Link to comment Share on other sites More sharing options...
SpecBamf41 Posted February 8, 2012 Author Share Posted February 8, 2012 thank you all. i fell much better. yes no mark on the belt. those 4g63's are damn easy to time anyway. marks are clearly printed on gears and blocks BNR18g on 93oct Link to comment Share on other sites More sharing options...
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