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#61 | |||
Starter Motor
Join Date: Jul 2024
Posts: 28
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Quote:
![]() Re Cam bolt, i've been watching Allan Howatt videos a lot. He reuses the cam bolt. This is where i am at now. -Flywheel locked in position. -8 New rockers placed -the area cleaned from rocker metal fragments. Next Stage -Fit the 2 cams with chain in correct position as per the diagram in my previous post (mark on intake cam pointing 12 oclock - mark on exhaust cam pointing 11 oclock) -Place the cam belt sprocket in correct position making sure the hole in the sprocket lines up with hole on the engine. -Place the timing belt and tensioner back on. -Then remove the pins and by hand spin the crank 2 rotations and check if both flywheel and cam pully both line up again and able to pin them again. All this before putting the rocker cover on making sure the marks on the cam sprockets also still line up at 12 oclock and 11 oclock. At the same time making sure nothing is hitting the rockers or valves while spinning. Any resistance or knocking sound while hand spinning would be a warning sign i don't have things right. Make or break time..... Literally |
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#62 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,824
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I’m relieved it’s coming together. Be sure to hit that torque - with thread locker - before your test turnings-over.
We did some bolts yesterday on a truck head that were 59Nm plus 90° plus 180°. It’s disconcerting to both consider how far you’re twisting it and how tight it’s getting - but evidently parts are designed to take the stresses. You should “overpull” slightly on the 60° as the bolt will naturally spring back. |
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#64 | ||
Starter Motor
Join Date: Jul 2024
Posts: 28
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No thats it. I quit. 4 weeks of killing my self pulling things apart and lots of money spent, i quit.
I put it all together, try spinning it 2 revolutions but turns only 1/4 and locks up. The cam spins independantly as many times you like, so does the crank. but put them on the belt 1/4 turn. These have been up there with the worst period of my life. Thank you citroenbender and the rest of you for giving me your precious time. i can never repay yous for what youre worth. |
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#65 | ||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 22,912
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Sounds like you have the timing wrong and a piston is hitting a valve or two. Did you rotate the engine at all when when the belt and or chain was off? Have you check the piston position at number 1 cylinder at TDC?
What city and state are you in? Somebody on the forum more knowledgeable may be prepared to visit and have a look over the engine for you.
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regards Blue Last edited by aussiblue; Today at 05:48 PM. |
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#66 | ||
Diesel Sniffer
Join Date: Jun 2015
Location: Sydney
Posts: 1,308
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I'm thinking 1 of 3 things, either u have a bent valve,but after breaking 8 rockers I'm doubting that's the issue.(Do the valves all look to be moving when u are turning the cams & when u come to the back of the cam lobes do u have correct clearance s for each valve-tight valve lash is very bad as it will make the valve hang, better off lose than tight) 2/ possible that there is a machining difference from old rockers to new & valve lash is to tight making a valve hang & catch a piston....I'm also doubting this 3/ the timing is still out....& This is what I'm putting my money on, I believe that u have pinned the flywheel on No4 tdc & cams are@ No1 tdc.....keep going u are soooo close & we are all happy to help u get there.
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#67 | ||
FG XR6 Ute & Sedan
![]() Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 22,912
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Another of the many possibilities perhaps: broken or incorrectly adjusted timing chain tensioner preventing the chain freely turning? Like the one here https://www.youtube.com/watch?v=-jLzRoDQdyo&t=186s
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regards Blue |
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