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[Z06] head/cam install HELP !

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Old 05-07-2016, 03:54 PM
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appliance guy
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Default head/cam install HELP !

Following the "how to" for c5 head/cam install from ls1.com....

Got to the section after head install "optional safety check" (installing 2 push rods/rockers, rotating by hand.

I cannot budge the crank by hand, time was ligned up, not in gear, help !!!
Old 05-07-2016, 04:13 PM
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grantv
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Spark plugs out?
Old 05-07-2016, 04:17 PM
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No, they're in
Old 05-07-2016, 08:32 PM
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Originally Posted by appliance guy
No, they're in
So you're essentially hand turning over 400HP... not gonna happen. To manually turn the motor you'll need to remove them so there's no compression.
Old 05-08-2016, 10:10 PM
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Gotcha, thanks, figured that out....instructions not as good as I thought.

New problem.

Build complete, car turns over but won't start. Checked all the electrical connects that I can find that would make it not fire...coil packs, plug wires, connection for fuel rail, connect behind passenger cylinder head, ground on rear of drivers side head, maf, tb, both fans.

Per header instruction I added the jumpers to the front 02 sensors and moved the rears to the front and capped the rear bungs

At a lose, have and appointment with a tuner 2 hours away tomorrow, really trying to get this figured out tonight
Old 05-09-2016, 12:22 AM
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Cheesecake 07
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Originally Posted by appliance guy
Gotcha, thanks, figured that out....instructions not as good as I thought.

New problem.

Build complete, car turns over but won't start. Checked all the electrical connects that I can find that would make it not fire...coil packs, plug wires, connection for fuel rail, connect behind passenger cylinder head, ground on rear of drivers side head, maf, tb, both fans.

Per header instruction I added the jumpers to the front 02 sensors and moved the rears to the front and capped the rear bungs

At a lose, have and appointment with a tuner 2 hours away tomorrow, really trying to get this figured out tonight
You have fuel?
Old 05-09-2016, 12:51 AM
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Originally Posted by Cheesecake 07
You have fuel?
Update

Yes, I have fuel and spark. Going to do a compression test tomorrow
Old 05-09-2016, 02:42 AM
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Originally Posted by appliance guy
Update

Yes, I have fuel and spark. Going to do a compression test tomorrow
Did the replacement cam have the correct reluctor?

Larry
Old 05-09-2016, 07:49 AM
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Not sure what that is, but its a BTR 3 cam, popular on the c5's
Old 05-09-2016, 12:03 PM
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Pretty sure timing is off, going to tear it back down ugghh
Old 05-10-2016, 08:44 AM
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Timing was off, reset and will put back together this weekend.
Old 05-10-2016, 02:23 PM
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Originally Posted by appliance guy
Timing was off, reset and will put back together this weekend.
At least your getting good at yanking the steering rack

Had a balancer issue 3 damn times on my last build...I feel the pain. Good luck on getting it dialed in!
Old 05-10-2016, 06:14 PM
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Originally Posted by Cheesecake 07
At least your getting good at yanking the steering rack

Had a balancer issue 3 damn times on my last build...I feel the pain. Good luck on getting it dialed in!
Yeah, getting good...I believe I could install a cam from start to finish in less than 5 hours. ...but, hope I don't have to again lol.

Fingers crossed I didn't F the motor up.
Old 05-15-2016, 07:56 AM
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Build update..

Moral to the story, MAKE SURE you set timing right the FIRST time!

Broke and bent several pushrods, bent the valves. ..

Off with the heads again, for the 3rd time ugggghhhh !
Old 05-15-2016, 11:40 AM
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Originally Posted by appliance guy
Build update..

Moral to the story, MAKE SURE you set timing right the FIRST time!

Broke and bent several pushrods, bent the valves. ..

Off with the heads again, for the 3rd time ugggghhhh !
This is why Hawks thirdgen is doing my cam swap. I don't have the time or patience for a cam swap
Old 05-15-2016, 04:43 PM
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That sucks dude... I'm sorry for your pain.

But glad you're getting it sorted out.

Good luck!!
Old 05-15-2016, 05:33 PM
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All exhaust valves bent




12 out of 16 bent or broken

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Old 05-17-2016, 10:01 PM
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chassed
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Sorry to hear about this...


Did you not use the dot to dot method?
Old 05-17-2016, 10:42 PM
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Originally Posted by chassed
Sorry to hear about this...


Did you not use the dot to dot method?
Believe it or not, I took the "dot" for granted...
Viewing the photo of the "gears aligned" from my smart phone, I couldn't see the "dot" on the crank gear....what I did see was a casting mark and assumed that was the "dot".

It wasn't until the car wouldn't crank that I blew the picture up and could then see the actual "dot"...stupid mistake on my part.

I just can't believe the amount of damage done and I heard no abnormal sound..no audible indication that timing was off when I turned the car over...weird.

Lesson learned...will hopefully wrap it up this weekend.
Old 05-17-2016, 11:52 PM
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Originally Posted by appliance guy
Believe it or not, I took the "dot" for granted...
Viewing the photo of the "gears aligned" from my smart phone, I couldn't see the "dot" on the crank gear....what I did see was a casting mark and assumed that was the "dot".

It wasn't until the car wouldn't crank that I blew the picture up and could then see the actual "dot"...stupid mistake on my part.

I just can't believe the amount of damage done and I heard no abnormal sound..no audible indication that timing was off when I turned the car over...weird.

Lesson learned...will hopefully wrap it up this weekend.
Sorry about your trouble.
Always, after completing an engine, turn it over by hand a few rev and look/listen/feel for anything not right.

Larry


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