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<div class='quotetop'>QUOTE(swampthang5.3 @ Jun 8 2007, 07:27 PM) [snapback]96124[/snapback]</div>thats what i thought too, somthing in the shrowd hitting the fan, then it just sounded like metal, i got the supercharger off heads will be off tomorrow i got my fingers crossed the low end is okQuote:
you definately know somethings wrong, it started sounding like something cought in the e-fans and got really loud from there. took about 5 seconds for it all to happen.
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I've seen 5 trucks with the .581 lift cam and a broken valve spring on all of the. Some were Manley including my own and the others were comp 918's. A friend of mine in the navy called me a couple of weeks ago and said he was having engine problems in his WS6 and it wouldn't idle. I told him to feel the intake manifold to see if one of the runners were hot and sure enough one was. He pulled the head the other day and it had a broken 918 spring and the valve beat into the piston 1/16" deep. We ordered a set of Patrioot heads with dual gold springs to help take care of his problem. I'd put a set of Golds in your truck if you can and get away from the 918's and the Manley's. My golds are a little noisier but I'm hoping to get 30,000 miles out of them at a minimum. JMO
HPE is building a forged 347 for it so hopefully it want happen again. should i get away from the comps or will they hold up.
Whats the lift on your cam and how old are the springs?
<div class='quotetop'>QUOTE(NITROUS @ Jun 9 2007, 11:05 PM) [snapback]96217[/snapback]</div>Wow guys, I feel like I am walking on broken glass now...I have a Comp 220/220 .581/.581 114 +4 LSA cam with 918's...And all of this good news is starting to freak me out... When have the broken springs happened? After a certain mileage? After dogging the crap out of it? Just wondering cause whenever I do drive my truck, my foot is ALWAYS stuck in it... :smile:Quote:
I've seen 5 trucks with the .581 lift cam and a broken valve spring on all of the. Some were Manley including my own and the others were comp 918's... [/b]
the cam is 232/234 112 lsa .595/.598 and the springs were 3 days old. its a big cam for the truck, but they told me it was streetable, so i went with it.
Nice cam! It's kind of like playing Russian Roulette with the springs. I've heard so many horror stories I'll never buy a single spring again. I know what Comp and Manley say but there's too much proof out there on what's happening. If you don't take the time to let your engine warm up before a high rev, spend the money on a good set of springs. Actually it's a cheap investment.............................
<div class='quotetop'>QUOTE(NITROUS @ Jun 11 2007, 02:49 PM) [snapback]96389[/snapback]</div>what other springs are out there to choose from, as far as being better. when it happened, the truck had been running for about an hour so it was warmed up. and i was cruisin, not even on it. HPE is building the motor now so i can switch em' out for nothing.and does anyone know anything about the 347, as far as performance.Quote:
Nice cam! It's kind of like playing Russian Roulette with the springs. I've heard so many horror stories I'll never buy a single spring again. I know what Comp and Manley say but there's too much proof out there on what's happening. If you don't take the time to let your engine warm up before a high rev, spend the money on a good set of springs. Actually it's a cheap investment.............................
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Patriot Performance gets some of the best springs. Billy at TRTTurbo can get you some for a great price. The PP springs shed the least amount of brittle materials compared to most other company's springs.
I got my head off, the head looks fine the valve is very bent, and good size nic in the piston, im gona clean it up with a cookie and make sure its not cracked but it should be runable, does anybody know if i can run bigger valves in the stock lq9 heads? i figured if there off i sould do new valves and guides, and lifters