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SVTPerformance's Chain of Restaurants
Road Side Pub
What would cause breaking a timing chain or timing gear?
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<blockquote data-quote="murse" data-source="post: 16634894" data-attributes="member: 90574"><p>Sorry wasn't sure where to put this, but figured road side has a lot of traffic.</p><p></p><p>Last fall I upgraded to a Vortech V7 JT (forged motor) we were seeing valve float so I decided to do cams/springs. (Local shop has done all my work) Had comp cams/springs/retainers installed and retuned (made 607 rwhp) a week later coming home form work it started making a metal on metal sound and shut down. Towed it to the shop and found a broken secondary gear.</p><p></p><p>[ATTACH=full]1709179[/ATTACH]</p><p></p><p>Of course it bent some valves, so i had some head work done and had the spark plug threads upgraded to a 8 thread. We replaced the secondary gears with L&M billet gears and Ford performance camshaft kit ( m-6004-a464) So all new chains/tensioners/guides and the billet secondary gears.</p><p></p><p>Fast forward to last weekend, driving home from work, passed a slow car (i was in boost, but not upper rpm's) and car made a weird noise and smoked/puffed and was running rough. I pulled over, shut it off and when i climbed out of the car I saw oil trail behind the car. I lifted the hood and saw the driver side valve cover with a hole and the primary timing gear with no chain.</p><p></p><p>So how the hell do you break either a secondary gear or primary timing chain???? could it be bad springs???? Is my car cursed???</p><p>[ATTACH=full]1709184[/ATTACH] [ATTACH=full]1709185[/ATTACH]</p></blockquote><p></p>
[QUOTE="murse, post: 16634894, member: 90574"] Sorry wasn't sure where to put this, but figured road side has a lot of traffic. Last fall I upgraded to a Vortech V7 JT (forged motor) we were seeing valve float so I decided to do cams/springs. (Local shop has done all my work) Had comp cams/springs/retainers installed and retuned (made 607 rwhp) a week later coming home form work it started making a metal on metal sound and shut down. Towed it to the shop and found a broken secondary gear. [ATTACH=full]1709179[/ATTACH] Of course it bent some valves, so i had some head work done and had the spark plug threads upgraded to a 8 thread. We replaced the secondary gears with L&M billet gears and Ford performance camshaft kit ( m-6004-a464) So all new chains/tensioners/guides and the billet secondary gears. Fast forward to last weekend, driving home from work, passed a slow car (i was in boost, but not upper rpm's) and car made a weird noise and smoked/puffed and was running rough. I pulled over, shut it off and when i climbed out of the car I saw oil trail behind the car. I lifted the hood and saw the driver side valve cover with a hole and the primary timing gear with no chain. So how the hell do you break either a secondary gear or primary timing chain???? could it be bad springs???? Is my car cursed??? [ATTACH=full]1709184[/ATTACH] [ATTACH=full]1709185[/ATTACH] [/QUOTE]
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SVTPerformance's Chain of Restaurants
Road Side Pub
What would cause breaking a timing chain or timing gear?
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