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Old 04-17-2013, 08:34 PM   #1
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Need cam help I'm going crazy!

First off I got a set of XE270AH stage 2 cams installed them in my stock engine and had clearance problems. I bent all my valves and dented all 8 pistons. Next I ordered a 5.1 stroker from CHP and a set of 185cc Trick Flow heads with a 44cc combustion chamber to make sure my cams would fit. Tonight we installed 1 cam and decided to see if I had any clearance problems and somehow we did. I told CHP when I ordered my short block what I had for cams and what heads I was going to get and they said it would work fine. I was wondering if I would need to have both cams installed and timed for the valves not to hit the pistons? I'm hoping because we had the piston all the way up and valve all the way open that's why they hit any thoughts?
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Old 04-17-2013, 09:31 PM   #2
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Normally what i would do is mount the cams in the car line up all the timing marks and turn the crank to ensure no piston is hitting a valve. I would turn the motor by hand and obviously if you cant turn it cause it got hard as all hell that means piston valve contact since doin it by hand you go slow and can feel it out more unlike doing it by motor cranking for u. However if you are doing stage 2 cams wouldnt you degree the cams as well to adjust for that? Do you have adjustable gears or just stock gears?
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1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 04-17-2013, 09:42 PM   #3
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They are adjustable gears but I didn't even have the timing chain on I was just turning it over by hand with the cam holding the valve open. But yes the cams are degreed. I was just wondering if the valves hit because I only had 1 cam installed with no chain. Maybe doing this by hand I was causing timing issues that wont be there when both are installed?
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Old 04-17-2013, 09:51 PM   #4
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It is quite possible i mean you are having the piston up and valve open so they probably are hitting because its not being tested in their normal operation. Imo install both have ams degree them as necessary install chains and turn motor by the crank. See if in normal operation sorta if they tap while doing it by hand as well as check to make sure timing is on point considering possible play in chain due to the tensioner and such.
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1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 04-17-2013, 11:23 PM   #5
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Quote:
Originally Posted by 67mustang97 View Post
They are adjustable gears but I didn't even have the timing chain on I was just turning it over by hand with the cam holding the valve open. But yes the cams are degreed. I was just wondering if the valves hit because I only had 1 cam installed with no chain. Maybe doing this by hand I was causing timing issues that wont be there when both are installed?
You are going to have ptv issues if you don't have the chain on and timing marks lined up before turning the crank. Even the stock set up will have ptv issues then
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Old 04-19-2013, 08:34 AM   #6
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Both cams installed and timed. I think it's going to be OK I turned the engine over and didn't hear or feel anything hitting.
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Old 04-19-2013, 09:05 AM   #7
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good to hear that. Cant wait to see a video of the cams
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Old 04-19-2013, 05:57 PM   #8
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That is awesome news good to gear everything is on the right track and i agree as well cant wait to see a vid with it cammin
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o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 04-20-2013, 08:43 PM   #9
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1 More snag power steering line got damaged installing the engine. 1 More day before I can fire it up.
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