Will L.
Well-Known Member
May of 99 was the last of the alterations of block by GM. So supposed to be the best of the GM 6.5 blocks, some say best of all the GM, others eay the red block 6.2 was best.
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What did you do with your GMT400 today...or yesterday....
- Thread starter deejaaa
- Start date
mikev
Member
Big T
Well-Known Member
Yesterday I crated up the old 506 engine.
ak diesel driver
6.5 driver
What are you going to do with the old engine?
Big T
Well-Known Member
Give it to MrMarty. It seized at idle speed from external oil loss. Block and some of the components may still be good. I have no use for it, but I can do my break in miles meeting up with Marty.
MrMarty51
Well-Known Member
I’ll need to get My truck back together before the meet-N-greet. That might be a munth, maybe two.
Of course, if I mention road trip to the eldest boy child, he would most definetely wanna take His 19 Dodge.
Then it could happen a lot sooner.
MrMarty51
Well-Known Member
Butane torch, heat helps to loose that gasket sealer.
Right Stuff seems a lot tougher than the, I think factory, RTV sealant.
Then having a tough enough gasket scraper to drive between the upper corners of the rocker covers and the head helps a lot too.
Take note, special note, see how the wood handle is ground away from the shank ?
That prevents the pounding affects from splitting the wood handle.
I need to do some touch up to that shank so it done distort and split the handle regardless of the wood being ground away.
I do have another of these scrapers, handle busted and split away a 1/4 of a century ago.
Thats the one I use when I drill spot welds then chisel the layers of steel apart.
IDK who else sells these scrapers but I used to get them off the Snap On truck.
Maybe @Will L. can comment if they are available from the Mac dealer.
IDR what the price was way back then but I’d bet a 25 dollar bill might get one today.
Well worth an item in the tool box.
Right Stuff seems a lot tougher than the, I think factory, RTV sealant.
Then having a tough enough gasket scraper to drive between the upper corners of the rocker covers and the head helps a lot too.
Take note, special note, see how the wood handle is ground away from the shank ?
That prevents the pounding affects from splitting the wood handle.
I need to do some touch up to that shank so it done distort and split the handle regardless of the wood being ground away.
I do have another of these scrapers, handle busted and split away a 1/4 of a century ago.
Thats the one I use when I drill spot welds then chisel the layers of steel apart.
IDK who else sells these scrapers but I used to get them off the Snap On truck.
Maybe @Will L. can comment if they are available from the Mac dealer.
IDR what the price was way back then but I’d bet a 25 dollar bill might get one today.
Well worth an item in the tool box.
MrMarty51
Well-Known Member
Scribing each rocker arm so when they come sliding off the shaft, for dressing, if they are still usable, then their locations is well marked.
Big T
Well-Known Member
I won’t be back up to Montana until end of October or early November. I don’t have the time to go through old motor and figured you would have better use for it.I’ll need to get My truck back together before the meet-N-greet. That might be a munth, maybe two.
Of course, if I mention road trip to the eldest boy child, he would most definetely wanna take His 19 Dodge.
Then it could happen a lot sooner.
MrMarty51
Well-Known Member
That should work from here.
MrMarty51
Well-Known Member
And a glimpse of todays poorgress.
Lifters.
A little plasticated trash of some sort.
Caught this just in time. I think. All the rod bearings about the same. I began checking for the sizes but then the rod side had differing numbers than the cap side.
Caps seemed standard, rod side seemed to be under size, .0250
Cam bushes about done in.
Lifters.
A little plasticated trash of some sort.
Caught this just in time. I think. All the rod bearings about the same. I began checking for the sizes but then the rod side had differing numbers than the cap side.
Caps seemed standard, rod side seemed to be under size, .0250
Cam bushes about done in.
MrMarty51
Well-Known Member
All thats left is the oil galley plugs.
MrMarty51
Well-Known Member
And no visible main web cracks.
Got the crank removed and thoroughly cleaned the webs and the webs all appears to be solid.
Got the crank removed and thoroughly cleaned the webs and the webs all appears to be solid.
dbrannon79
I'm getting there!
Marty, How are the bolts and washers holding up on the rocker shafts? any noticeable wear on the washers or rockers? I forget how long ago you installed them.
MrMarty51
Well-Known Member
I will be dismantling those bolts/washers and inspecting the mating surfaces.
I will scribe a line on them washers so I know what angle they came off from so to be able to tell exactly what their positions was.
Then get them back together at that same angle.
If the rockers are still in good shape after inspecting the pushrod ball ends then the valve ends will need to be dressed back to a flush surface.
Big T
Well-Known Member
What are you doing with the pistons? The one in the lower right looks scuffed.
Will L.
Well-Known Member
Any bets if that is cylinder 7 or 8 if six others have none of that?
MrMarty51
Well-Known Member
Nummer two.
If it is the one on the far right setting crosswise to the rest of them.
MrMarty51
Well-Known Member
1-3-5-7 on the right, one farthest to the top is one.
Other side of 2, then, 4-6-8. Fartest to top is 2.
No.7 and No.8 both look to be plenty healthy. No scuffing and no scratching.
I did manage to get a couple rub marks on the No.2 piston but they are just barely marked.
I believe that these pistons could be placed back into service if I would of a mind to do so.
IDK what the bores will measure up to. Going to take the block to the blocks and heads man and have Him bore the block to the nearest size over, i’m betting on 0.030.
Then I would like to get a set of dropped compression pistons and fit them up. Dont know if that’d be a good, or bad, idea since I have the ATT turbo attached and it seems to max boost about 11 PSI, IIRC.
There is a reprogrammed ECM that will be on its way when QST gets one programmed and sent. Doing a daily driver tune.
Other side of 2, then, 4-6-8. Fartest to top is 2.
No.7 and No.8 both look to be plenty healthy. No scuffing and no scratching.
I did manage to get a couple rub marks on the No.2 piston but they are just barely marked.
I believe that these pistons could be placed back into service if I would of a mind to do so.
IDK what the bores will measure up to. Going to take the block to the blocks and heads man and have Him bore the block to the nearest size over, i’m betting on 0.030.
Then I would like to get a set of dropped compression pistons and fit them up. Dont know if that’d be a good, or bad, idea since I have the ATT turbo attached and it seems to max boost about 11 PSI, IIRC.
There is a reprogrammed ECM that will be on its way when QST gets one programmed and sent. Doing a daily driver tune.
Will L.
Well-Known Member
It will be interested to see the cylinder measurements if you don’t mind sharing