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1  Camaro Research Group Discussion / General Discussion / Re: Need help with 1967 RS headlights on: April 22, 2014, 04:17:07 PM
Yes the purple and black pigtail.  If you can not get it to power up by either way then the motor is bad.
2  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 22, 2014, 09:20:33 AM
Yeah knowing how I am; Ill be pulling the motor and doing a complete teardown, inspection & rebuild.  Sucks but I will feel better about it knowing I built the engine...

Also, when I was using the Snap-on bore scope I noticed metallic on the tops of pistons (which is expected) along with scoring on the cylinder wall on at least one cylinder.  Needless to say I could chew nails at this point.  But I am already running combos through my head on how I want to build it.
3  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 08:56:02 PM
Reason I say I am speechless is that this was over looked (piston to valve clearance) in the build process..
4  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 08:17:34 PM
Whelp after looking into it 5 of the exhaust pushrods were bent & one intake.  That's checking them on the work bench. I'll know 100% tomorrow when I get to work & roll them on the granite slab.  Further investigation has concluded that the exhaust valves are hitting the pistons.  Later in the week I'll do a leak down & go from there.  I'm speechless at this point.
5  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 05:11:38 PM
Lol
6  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 04:42:12 PM
It was technically on the road..  lol  although it was only for a few minutes..   Roll Eyes Sad
7  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 04:32:52 PM
Again Idk if the pistons were made for open chamber or not.  I didnt build it.  Ill snap a few pics later on when I get off work.  I really havent had any time to look over anything at this point.  Just took a few minutes yesterday morning to pull all the pushrods out.  If I have time this week I should be able to get a better idea of the problem.

As for the ratio its stock 1.72
8  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 04:11:01 PM
They are 11 to 1 TRW pistons and its oval port open chamber heads.  As for actual compression I am guessing 10 or 10.5 to 1 with the heads.  I dont think valves have hit the pistons (might be wrong).  Ill be doing a leak down test later in the week along with a compression test just to be on the safe side.  Most RPM this motor has seen is 5K.  At least with me.
9  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 01:57:17 PM
Ever wipe a cam out ? same symptoms---strange only 4 of ehaust push rods. Checking your timing gear set.


400 68 GTO I had---nylon timing gear set ,severe carb back fire ,guess what??

 one of my SBC's severe carb back fire---cam wiped out ,a few bent push rods.

Both spit up raw fuel through the carb. Both I shut down ASAP with minimal damage. On the chevy, dropped the pan checking for shrapnal, minimal ,most caught by the filter ,changed the cam push rods etc ,ran it hard after that for about 10 years. Blocks now at home in the Anglia ,rotating assembly boxed up.

Really what else could it be but bad cam timing ? Only the upward force of the piston would be strong enough to bind those pushrods and big blocks are ,er ,BIG. Let us know--steve.

Already checked timing.  Cam lobe was the first thought until I saw the pushrods.  After finding 4 I doubt its the cam.  One I would have thought that but not 4..  But I have been wrong before..
10  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 01:54:27 PM
I had a feeling it was a BB being they have two different size push-rods. You may also want to check for any bent rocker studs.
I recommend to drop the pan to check for metal chips in case some are small enough to get pulled past the oil pump intake screen.

Mike

Ill see how it goes.  No plan of dropping anything at this point.  If I do drop the pan the engine will come out first.  


I had a feeling you were just venting as I think you are about as savvy a Chev guy as they come. I also know you already had thought of all I suggested too. Some of those P-Rods have one end hardened for the guide plates. May have been installed wrong? I had a P-Rod shatter on the lifter end once. Usually, gasoline or geometry causes bent P-rods. I have also seen some Sm. Blocks P-rods go through the rocker. Are the P-Rods 5/16, 3/8 or 7/16 in.?


3/8" and case hardened..
11  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 01:18:52 PM
Already thought of all that as well.  Just irritated and wanting to vent.  lol  I will figure it out just not what I wanted to do on a fresh (8 year old built) engine.. Roll Eyes

Engine was broken in back then and had sat unstarted since 2006.  I would turn it over from time to time by hand.  Engine sounded fine when I fired it for the first time since and just a few weeks ago I noticed rocker noise and adjusted them then.  Now I know why there was noise the first time.  Its just odd it was only the exhaust and no intakes...

FYI the pushrods that were pulled out are 1010 mild steel.  Comp Magnum roller tip rocker.  Cam I am guessing by ear is either a .520 or .570ish lift cam (I am leaning to the more .570ish lift due to the radical sound).  Hyd flat tappet (that I do know).

Odd thing is the lifter side of the pushrod is fine.  Just the rocker side is damaged.  Almost like it was starving for oil.  Right now I want to make sure the geometry is correct and look for coil bind (which I do not think it has).

As far as runtime...  Other than break-in it has run maybe an hour if that.


No smoke and plugs look good except for the ones that had the issue which were a little fat but nothing major.
12  Camaro Research Group Discussion / General Discussion / Re: Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 12:30:31 PM
396 & the guy who had the car previously
13  Camaro Research Group Discussion / General Discussion / Bad Luck is Better Than No Luck; Right? on: April 21, 2014, 12:14:34 PM
Last Friday I had the exhaust installed on the car which took all day but thats wasnt a big deal. Car sounded great (sorry no video yet) so I pulled it off the trailer and into the garage. Saturday morning I started having issues with idle and backfiring through the carb and dying. Figured it was just where it had been sitting for so long so I took it for a short ride around the neighborhood. As I am pulling back into the drive it acts like it is flooding and dies. Get it started back and pull into the garage, get out and pop the hood to rocker arm noise. I pull the valve cover and this is what I find. 4 of the 8 exhaust pushrods are destroyed on the rocker arm side. 3 on pass bank and 1 on drivers. I did not build this engine and what little I know about it doesnt give the enough info to determine the cause. So first things first is to check pushrod length and go from there. I really dont want to pull the engine out before I have a chance to drive it at least 100 miles.. Awesome luck dont you think...

14  Camaro Research Group Discussion / Restoration / Re: has anyone run Sealed Power/Fed. Mogul/Speed Pro camshafts? on: April 17, 2014, 02:03:44 PM
Haven't seen you post for a while Darrell ,always welcome your " 2 cents "  Smiley

Remember Turbo Blue ?  20 years ago a station used to carry it in town...and 2 on the way to the track.
It will be happy days for him when he's down to reading plugs for heat range selection.Pretty sure somewhere
buried in the posts are factory recomendations for a base line.Colder plugs for towing.(racing) Don't know what year they stopped , but it was listed in the owners's manual. 64 I know for certain.



Thanks.  Ive been a little busy with work and trying to finish up the 67.  The most fun you can have is reading plugs and deciding what timing to run and adjusting jetting the carb.  Good times (racing).  Turbo Blue..  Havent heard that in a while.  I run Renegade Pro-110
15  Camaro Research Group Discussion / Restoration / Re: has anyone run Sealed Power/Fed. Mogul/Speed Pro camshafts? on: April 17, 2014, 11:09:55 AM
Are heads set up for unleaded? If you mean with hardened seats, Yes.
Cropper sells racing fuel by the drum
I will experiment with fuel mixtures, but have no intention of de-tuneing Wink
Here is a link to Cropper's : https://www.facebook.com/pages/Cropper-Racing-Engines/178083025573562
Replies on FB site reference to a guy named Weasel. I worked with him-Weasel Rhoades

Just remember when running higher octane like 108, 110 or 112 or higher you will need to add a few degrees of timing to allow for a better burn of the fuel along with running a hotter plug.  Example:  If the cam calls out for 6 degrees and your total is 34; go up to 36 or so and see how the plug looks.  Im sure you already know this but just felt like chiming in.   Tongue

I usually run 110 and 92 or 3 ethanol free 50-50 and run a few degrees more timing.  But I run a slightly colder plug too. Still experimenting due to very little run time which might change over the weekend..
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