|
03-18-2016, 12:33 AM | #1 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
so DIY Magnafluxing confirms no cracks in the Driver Side Vortec J 16 9 cylinder head
honestly I am still trying to get used to using this product, I've gotten better, in terms of creating less of a red mess, but I can still do a better job of wiping off the red dye before shooting the white developer |
03-18-2016, 12:35 AM | #2 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
DIY Magnafluxing also confirms no cracks in the Passanger Side Vortec J 16 9 cylinder head
there, did a better job of using this product, finally, hope its the last head I have to use it on, ha ha did I mention, I am in love with these heads! |
03-18-2016, 12:37 AM | #3 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
someone asked me how do you clean the Magnaflux stuff off, well after it turns white, it becomes a sort of powder and I just use a brush to brush it off, comes off like chalk dust, then you could just go back to the SPOTCHECK cleaner and whipe them off, I assume this stuff is harmless and won't harm the metal, not sure what it do if/when it was to mix with engine oil
|
03-18-2016, 12:39 AM | #4 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
alright on to Phase 3 of Head Inspection
What on Earth is this guy up to now? so we glue the 1000 fine grit paper to a nice flat solid (no flex) board of some sorts Last edited by Gregski; 03-18-2016 at 01:02 AM. |
03-18-2016, 01:10 AM | #5 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
we will be testing the heads to see if they are warped or if the surface is true in three different ways
1. use a metal straight edge and once again our trusty handy dandy flashlight, turn off some lights in your state of the art facility and see if the light of the flashlight will shine through underneath the strait edge while holding it flat on the cylinder head (this is not a perfect science) also not ideal in all areas of the surface only the ones solid underneath |
03-18-2016, 01:12 AM | #6 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
2. use a metal straight edge and a feeler gauge and see what's the largest gauge you can slide under there, in the pic I was trying a .010 (10 thousandths of an inch) and no dice, actually I couldn't even slide in the thinnest one in the bunch - and that is good, move the straight edge around the head and try it in many different places
|
03-18-2016, 01:15 AM | #7 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
3. I make sure the head is level and using fine sand paper afixed to a flat board gently, under its own weight glide the sand paper board over the cylinderhead surface, remove board and see where contact has been made, the shinny spots are the high points,
|
03-18-2016, 01:19 AM | #8 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
you should get an even shine, my driver side head looks good as the same machining marks are highlighted through out all four chambers
|
03-18-2016, 07:36 AM | #9 |
Registered User
Join Date: Jan 2009
Location: Calgary, AB
Posts: 1,181
|
Re: Restoring Rusty
you don't want your surface of the heads to smooth but you also don't want them to rough either.
|
03-18-2016, 11:54 AM | #10 | |
Registered User
Join Date: Oct 2008
Location: Livermore ca
Posts: 699
|
Re: Restoring Rusty
Quote:
One other thing you need to think of. While you can't fit a feeler gauge under any part of the head you still have the highs and lows of that finish that a feeler gauge is not getting to. The minimum warp we tolerate is .003, but we have seen where we can measure .003 it would take almost double that just to get it to clean up. Ok back to the story, this is entertaining. Congrats on a good set. Oh one other thing. The process you are using is called DYE-CHECKING. Magnufluxing would actually have a magnet used to detect a crack. Dye-check is used more for aluminum, But it has fallen by the waste side as it has not been a reliable source for shops to depend on. A wet mag is used to check cranks, rods, and there parts were the powder mag would not pic up or be reliable enough to get into the areas of stress. A dry mag is what we see on blocks and cylinder heads that are iron. The most for sure way to make sure there are no cracks to a water jacket is to pressure check. |
|
03-18-2016, 12:00 PM | #11 |
Registered User
Join Date: Oct 2008
Location: Livermore ca
Posts: 699
|
Re: Restoring Rusty
I keep looking at one of the heads and see that a spot in the water jacket that looks like it is eroded out or ground out. Its on the spark plug side of the head, a middle cylinder. compare all the water jackets and you will see it. Its a round area. My concern is that area is getting very close to the fire ring of the gasket. Trust me on this when I say that is not good. shoot a picture if you can. maybe its just an illusion to me but all the pics look the same. I just can't see the impression of the fire ring.
|
03-19-2016, 12:47 AM | #12 | |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
Quote:
seriously looks like maybe a casting imperfection that survived 134,000 miles, there is plenty of meat behind it, but its just black and not shinny, I took a flat file to it to grind down the sharp edges a bit, I think it will be ok |
|
03-19-2016, 11:02 PM | #13 | |
Registered User
Join Date: Oct 2008
Location: Livermore ca
Posts: 699
|
Re: Restoring Rusty
Quote:
|
|
03-18-2016, 01:32 PM | #14 |
Registered User
Join Date: Sep 2015
Location: Sioux Falls, South Dakota
Posts: 702
|
Re: Restoring Rusty
I've been on the hunt for that style air filter maybe we could work out a deal greg
__________________
"Orange Crush" |
03-18-2016, 02:08 PM | #15 |
I know the pieces fit
Join Date: Nov 2007
Location: MONTGOMERY, AL
Posts: 5,523
|
Re: Restoring Rusty
I didn't see that one coming. I figured you'd regroup and buy a new set. Congrats on getting some good ones. Can you return the cracked heads? Something you said earlier made me think you were stuck with them but not sure.
|
03-18-2016, 03:00 PM | #16 | ||
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
Quote:
Quote:
Then I bought the single head which is good, but I no longer need it, so I may take it back or sell it on Craigslist, not sure yet. |
||
03-18-2016, 06:05 PM | #17 |
Registered User
Join Date: Mar 2016
Location: Brookings
Posts: 42
|
Re: Restoring Rusty
I just wanted to check back on this thread and say I read it from start to finish, and it encouraged me to join the forum. (that and my own project)
It was this thread that I learned of POR 15, and I recently used it on my truck with great results, although its been two weeks and its still hasn't come off my arm yet... Greg takes a lot of great pictures and his commentary is generally witty and hilarious. If you want a great thread, be like Greg. Also, nice truck. |
03-18-2016, 08:02 PM | #18 | ||
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
Quote:
Quote:
TWO WORDS: Denatured Alcohol get it at Home Depot for $5.00 bucks use it to wash your hands, it works! |
||
03-19-2016, 12:49 AM | #19 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
another $20 in the trash
but oh well she's cleaned two heads (ok 5) lol |
03-19-2016, 12:53 AM | #20 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
got to cleaning the valves out of the new heads (C 16 9) today, don't worry I'll spare you the mug shots, but I am beginning to think that the exhaust valves just corode and pit much more than the intake cause they run hotter, duh
seems like it don't matter if they came out of an engine with 234,000 miles on it or 134,000 they look the same to me Would you agree? Concur? Object? Last edited by Gregski; 03-19-2016 at 02:21 AM. |
03-19-2016, 12:56 AM | #21 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
what in the world has happened to my face shield, you can almost see through it, looks like an Alpaca spat on my face
honey?! who let the Alpaca out again? |
03-19-2016, 12:59 AM | #22 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
now what was I talking about, ah yes, valves, lets take a look at one sample intake valve out of the new (C 16 9) heads
just look at that stunning beauty, that's hot (get it) explosive even! |
03-19-2016, 01:03 AM | #23 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
alright Greg, so there's no cracks, the heads are true, and the valves are cleaned what are we gonna do next?
I donno, wanna lap dance? |
03-19-2016, 01:11 AM | #24 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
well folks when the dinosaurs roamed the earth the Flintsones would have used one of em them plunger looking tools to lap the valves, the process would look like the caveman trying to start a fire by rubbing a stick between the palms of his hands atop of a piece of bark or something, the stuff we put on valves was called lapping compound
but then drills were invented and YouTube came along, and that changed everything, even the stuff is now called "grinding" compound [excuse me] lol |
03-19-2016, 01:16 AM | #25 |
Post Whore
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 10,840
|
Re: Restoring Rusty
honestly this is the first time in my life that six inches proved to be too long, (I am talking about the rubber hose people) so I cut it down to 3 or so, but even then I had to switch from clear to a 1/4" 50 PSI black hose (one I wanted to use all along but couldn't find it) someone put it where I keep all my hoses and it was hidden in plain site, had to use my beer goggles to find it
notice I also switched to my trusty De Walt cordless drill cause it has veriable speeds, the slower the better, slow and low baby slow and low, that is the ... tempo Side Note: played around with masking the heads for paint, god I wish to do anything but head work right now, how I would love to paint me something |
Bookmarks |
|
|