General Supercharger Thread

I'd donate them but getting them off/to you might exceed the value.

 

Yes sir, chains, cams, I think the rockers, essentially everything besides the valves

 

Yea if it's like $200 to ship them I'll take them, if it's worth more time and money than that not really worth it imo. They're just gonna sit on my shelf anyway

 

Yea

 

I have kids coming & Wife having another surgery tomorrow, so just don't have the bandwidth to deal with it, if someone local wants to do it I can tell the shop they are coming, it's in Glendale

Maybe send the block? The crank & 7 pistons/rods might be ok?

 

@reywcms engine update:

Cylinder 7:


















Current theory we have:

Ringland broke (not sure why yet). Engine was "fine" and ran for awhile. Rey had ALL of his plugs go bad at the same time at the beginning of the year, probably from so much blowby and the catch can unable to keep up. He replaced plugs, ran fine. Drove it from Oregon to Las Vegas. Blowby at the fractured ring land was slowly carving material out and leaking more and more, but still somewhat functional and able to run. Eventually the compression and blowby were able to wear through the piston skirt. "Coincidentally" this was exactly where the oil squirter was. The piston constantly had oil being sprayed right into the burned through hole, and this was especially bad at bottom dead center where there was 30-60psi of oil coming out a straw half an inch from the hole. This happened once Rey was near Las Vegas and the engine started running terribly----it had been limping by with #7 mostly working, but now #7 turned into an oil chamber and stopped working completely and was pumping oil through the exhaust. The piston wearing down was blowing particulate through the engine and onto the #7 components---the cylinder wall isn't worn down so much as seems to have buildup of the remains of the piston. The rod is discolored from piston residue blasting onto it.

I think this explains the chain of events that lead to the engine ultimately running bad and why it looks so catastrophic. What we aren't entirely convinced by is what actually initiated this failure. Is it coincidence the oil squirter is exactly where the blow through happened? Maybe. Or did the piston or rings get hot and the oil squirter shocked them and caused a crack? Did it coincidentally fail right there from knock? The top of the piston and the other pistons don't show any signs of knock, but that doesn't mean much. But in all of the ringland failures I've had with other engines, two parts of the ringland crack and the whole chunk breaks free, usually large chunks. But the section of ring land missing is pretty small, so while not impossible is just a much different/smaller ringland failure than I've seen across two other types of engines. Maybe the ringland didn't fail at all? But it certainly looks like something caused all the blowby to happen in this region, which would most likely be a crack in the ringland that was just left unchecked for a long time.

I've had two engines that cracked ringlands on me, a LS and a 2JZ. Both had the ringland crack in a 90deg+ span, and both kept running totally fine with the only real tell tale being extra blowby that was only visible because the catch can wasn't hooked up yet. It seems likely that was the issue and Rey never noticed since #7 was mostly fine until the hole formed. I just think it's really odd it's right where the oil squirter is, of all places, it's directly above it.

Nonetheless, very cool failure, rest of the engine and all the bearings look beautiful. I will talk to the machine shop tomorrow about cleaning it up, porting the heads, and some other tweaks and we'll go from there!

 

OH HO HO HO!!!!!

 

10mins with a welder and some channel locks and it’ll be good as new.

It looks almost like a torch was slowly working away at it. Piston got a hot spot, oil hit it and cracked it, ignition and heat slowly melted it.

 

I took my first road trip with the newly Supercharged Tundra up to Maine about 170 miles each way for 10 days of vacation. It was hot and I hit some stop and go traffic and I was loaded down heavy. The truck did not skip a beat and effortlessly cruised at ahem highway speeds even fully loaded up! I would say it's the best mod you can do with the truck and I am so happy with it! Even turning 37's is effortless now! If you're thinking about it don't hesitate!

 

Not that I know of, but am interested in being educated.

 

Hohleey smokez..

I have a theory..

 

BTW, FedEx has my blower in transit. It was in NorCal this morning with about 800 miles to go. Supposed to show up Friday by end of day. Who thinks it will actually show up tomorrow?

 

Picked up my Whipple today(finally)as the second box(blower box) arrived at the shop I ordered from. So, I think it will as the delivery time was accurate. Shipped yesterday and arrived today. I'll plan on the thermal blanket application this weekend.

 

That is kinda odd. Usually ring butt ends overheat and touch blowing out the ring land. Gasses trapped and blew? That's one I really wouldn't expect. Pretty wild.

 

@Silver17 mentioned bridge jack for the 4 post but limits amount of work that can be done.

 

Another update, inspected the other pistons and ring lands cracked on 1,3,5,6,8



Interestingly, every ringland is cracked in the exact same spot, right next to the skirt on the inboard part of the piston





This is the same spot #7 melted through. I think that confirms that that location (inboard above the oil squirter) is the weak link for whatever reason. It's not a coincidence it broke there, and who knows the reason, but at least there is a pattern so it's not a fluke why #7 was jamming oil through the exhaust.

With that said, compression on all these cylinders were the lowest out of the whole engine, but not by a lot. Cylinder 3 was only 2psi short of #4 (4 and 2 were the only intact pistons), so the compression test having some variance does match up with the cracked ring lands, however if you asked me which ones were cracked I wouldn't have guessed them all since some cracked ones still had very high compression.

This leads @reywcms and I to think the pinging rey thought he heard on his trip south was real and resulted in all of these ringlands failing. Additionally, and something I hadn't taken notice of, the gas that came out of the tank is black.

Here's normal Jerry can



Here's one with rey gas



The three tanks on the right have gas from the tundra



Initially I chocked it up to oil getting in the gas, but that doesn't make sense since the return line can't pick up stuff from the engine. This gas somehow turned this way or was filled like this. Additionally, since this gas was able to be pumped out of the truck, logically it should've been pumped into the engine so the black shit should not have been getting collected in the tank. Either something was disintegrating or the truck got some weird nasty gas somewhere.

We think the truck got bad gas, which matches reys timeline driving through Reno and thinking he heard pinging, that resulted in 5/8 of the pistons knocking and blowing the ring lands. But it kept running and had minor side effects.

#7 though we still think was already compromised long before that, and ultimately #7 is what finished reys trip. We think #7 had been bad for a long time and slowly wearing through the piston where its ring land had failed. It was a one off failure, and eventually pumped oil through everything else and totally failed. Coincidentally the other 5 cylinders also failed around the same time #7 totally failed. #7 would've ended his trip regardless of the other 5, the other 5 just happened to occur and potentially were not at all related to #7.

It's also possible #7 pumping oil through the intake caused knock to happen and fail the other 5, but that still doesnt explain the black gas.

 

Wow, that's nasty! Did you take out the fuel basket and inspect for deteriorated hoses? Maybe a non-submersible hose was used to install the upgraded fuel pump? @reywcms , where'd you get your gas?

 

That's some quality carnage right there.

 

This was my thought on the fuel hose line used could be possible. I can't recall exactly but it was in Reno and I never go to unknown pumps so definitely a major stop but that doesn't mean shit lol

 

I haven't seen the submersible gas hoses deteriorate to that extent. Maybe in diesel or jp5 jet fuel but not likely. Unless he got a counterfeit hose. Might be cost prohibited but possibly have gas analyzed for rubber/oil? Geez... even on stock pistons have the rings opened up?

 

Rey is a serious overachiever!!

 

You had your rings opened up on the rebuild if I remember?

 

Oh shit, I hope so

 

I was just curious if they did in fact open up the gap a little. Did the shop give you any measurements? If it was how is it running? Initially you said it's good to go.
With @reywcms piston land issue would suggest severe pinging/heating to butt the ring gaps causing the cracking of the lands.
Hope your wife's surgery went well! Know she's been through a lot.

 

For whatever it is worth, Manley, for 15-30psi, recommends .026 gap.

 

I’m curious if that gap is different for each ring etc

 

The Total Seal piston rings in the Mustang are gapped at .028 Top and Second, with aluminum rods.

 

Yea that’s what we ran also back in the day.

 

Old school used to be different for each ring nowadays its consistent for each ring gap.

 

I suspect there are calculators the hat suggest that. I just have we to trust XAT and Manley on these specific rods and the Manley rings being used.

Edit: to support @Mdl there used to be a recommendation for middle to be less gap, and now, due to pressure trap, they say the same. So, same/same.

Edit: Receipts:

ring gap for up to 0-15PSI calculates out to a .020 top and mid ring (3.7145 bore x .0055 = .0204)
Ring gap for up to 15-30 PSI calculates out to a .026 top and mid ring(3.7145 x .0070 = .02600)