Bottom End Work

[ralphinnj]

Anyone had the crankshaft assembly balanced? Replaced the connecting rods? put in main studs? Basically, rebuilt the bottom end? If so, what did you do and how has it run? Any issues? What would you do differently?

Ralph

[diesel71]

the 6.0 has a two piece crankcase the lower half is called the bed plate witch holds the lower main bearing. the bed plate uses 20 main bearing bolts 5 per bearing=very strong.
having the bed plate all one piece is alot more durable not sure if studs would make a differance. the crank is forged steel maybe knife edgeing or lighting it might help. evey 6.0 i seen blowed-up had bent rods or holes in the pistons and a few holes in the block but the bottom end is very tuff.

[dalpilot]

Ralph, I am in the process of doing just that. I have lightened the crank, bored the block, honed it with a torque plate, and it will be balanced as soon as my custom billet rods from Crower get here. Everything will be balanced to the flex plate. Like Diesel71 said, I really can't see studs making a difference in the bottom end. The crank is tough, and the bed plate holds everything snug. I'm planning to spin the thing up to the 6000 range, apparently the 6.0 really makes power above 5K on the tack.......really. With billet rods, custom ceramic coated pistons, and coated bearings everywhere that shouldn't be an issue. I am dropping the compression down to around 14:1 also, and cramming a shit load of air in there with a divorced twin setup. Hows it gonna run??????? I have no idea, but I'm gonna find out.

[ralphinnj]

I would agree on power...assuming your torque holds up, you can add 50% to your HP when you go from 4K to 6K RPM's. However, I don't know of any 6.0's really running 6K. But it would be a lot of power for sure, even with some torque degradation.

I am not sure about the main studs. Never know, if you really want to preserve main bearing life, probably want to keep that bedplate from moving.

Ralph

[dalpilot]

Well, I do know that All caught up spun his off the line to 6100, but that thing is highly modified. I am building the rangers with a bottom end that "should" be able to hold those rpm's.

[ralphinnj]

Be cool to see that run. Do you mean you are putting a 6L into a Ford Ranger?

[dalpilot]

Yeah, you haven't heard about it? Here:

http://www.competitiondiesel.com/forums/showthread.php?t=12837

http://www.competitiondiesel.com/forums/showthread.php?t=13067

[ralphinnj]

I had heard of one, but I apologize I didn't know it was your mastermind. So, how is it going? Any new pics? Has it run yet? 10's? Better? Or is the above discussion that you are doing on the little 6.0? That thing should be capable of 9's actually.

Ralph

[dalpilot]

Were running for 9's. The chassis is out at Gene's shop in California, were doing the work there. I am building the motor in Austin. It would be together if Crower would cut my fucking rods. I ordered them october 11th. 4-6 weeks my ass.

[ralphinnj]

All the best luck to you with that. I can't wait to see it run. The build process is time consuming and almost nothing goes as you would plan it (unless you are doing the same thing for the 7th time or something like that). I'm in the middle also, but not seeking a low ET vehicle. Mine has taken a long time because I did not have a clear punch list on day 1. It has evolved, and is still changing. I have the feeling I am not the 1st one to go down this path.

Ralph

[dalpilot]

I hear ya, its 2 steps forward and 3 back. Its also all custom stuff, so you can't just go to the store or internet and buy it. You were breaking ground a loooooong time ago. I've watched your steps. Keep up the good work. Its a pain in the ass, but its fun at the same time.

[diesel71]

Ralph, I am in the process of doing just that. I have lightened the crank, bored the block, honed it with a torque plate, and it will be balanced as soon as my custom billet rods from Crower get here. Everything will be balanced to the flex plate. Like Diesel71 said, I really can't see studs making a difference in the bottom end. The crank is tough, and the bed plate holds everything snug. I'm planning to spin the thing up to the 6000 range, apparently the 6.0 really makes power above 5K on the tack.......really. With billet rods, custom ceramic coated pistons, and coated bearings everywhere that shouldn't be an issue. I am dropping the compression down to around 14:1 also, and cramming a shit load of air in there with a divorced twin setup. Hows it gonna run??????? I have no idea, but I'm gonna find out.

sounds like you are dropping compression to compensate for big boost numbers? if i can ask what kind of boost are you shooting for? are you going to run a power adder nos/meth or propane?

[dalpilot]

Yeah, the rods and pistons will have a total Reduced Compression height of .025, but by the time its decked who knows exactly. Yeah, were gonna run a dual, (maybe more) Nitrous kit. I am shooting for 60-80 PSI but that will be dependent on where the heads flow out at on the bench. I'm not keeping any secrets on the build so its fine to ask.

[ralphinnj]

I hear ya, its 2 steps forward and 3 back. Its also all custom stuff, so you can't just go to the store or internet and buy it. You were breaking ground a loooooong time ago. I've watched your steps. Keep up the good work. Its a pain in the ass, but its fun at the same time.

Thanks. I know I have been out of the loop, but wait til you see the result. I am going more for a power and looks package, but I've decided that I don't mind the weight (so I am not stripping it down for dragging, etc.). In spite of the 7500-8000 pounds, it will be a low 12's truck, streetable, and most important to me, dependable. That is where I have put a lot of money and thought. Drivetrain got a lot of attention, as did much of the engine, as well as the little things like coolant and oil filteration systems.

I wish you luck in your 9sec quest, I am pretty sure you will make it. What is the target vehicle weight?

Ralph

[ralphinnj]

What do you mean by divorced twins? Does that mean a turbo dedicated to each bank of 4 cylinders? If so, can that lead to 60-80psi? I don't know much about the limits of single turbos. Please educate me!

Ralph

[dalpilot]

Yeah, thats exactly what it means. Still working on the details of the turbos, but its gonna be pretty wild. I am aiming for 3800#'s

[ralphinnj]

I predict 1000 crank HP. Which would lead to a low 9's at close to 150mph! It's hard to account for the torque....could be even faster in MPH. Can't wait!

Ralph

[dalpilot]

That would be great, but I am not gonna make any predictions. Personally I am building this truck to have fun, not to set the world on fire. If it comes together like I hope it does it should be a hoot at events. It started as a thank you to our members at Comp D, and will stay that way. Its gonna have 2 seats for a reason, to give rides. Thats the plan, and I hope it stays that way. I do know that a properly built 6.0 has laid down close to what you predict on Fuel alone. (sorry, I cannot give any details or names, ((I know thats gonna ge me crucified))). LOL International claims they laid down 1000 HP with one on fuel and a stock bottom end. Not sure how long it lasted, but they claim its true. I am to say the least skeptical of claimed numbers.

[TANK'S 250]

OOOOOOOH...wait till somebody see's that^^^^^ deadman^^^^^


You better edit that real quick....lol

[ralphinnj]

Must be a really big turbo.....I'd say you have to be well over 100psi to do that....but that has been done on other diesels in the past, so I wouldn't bet against it.

Ralph

[dalpilot]

OOOOOOOH...wait till somebody see's that^^^^^ deadman^^^^^


You better edit that real quick....lol

Yeah, I know. Its not me claiming that, but it is a fact. Its a pulling truck, and thats all I can say about that.:eek:

[_CH_]

That would be great, but I am not gonna make any predictions. Personally I am building this truck to have fun, not to set the world on fire. If it comes together like I hope it does it should be a hoot at events. It started as a thank you to our members at Comp D, and will stay that way. Its gonna have 2 seats for a reason, to give rides. Thats the plan, and I hope it stays that way. I do know that a properly built 6.0 has laid down close to what you predict on Fuel alone. (sorry, I cannot give any details or names, ((I know thats gonna ge me crucified))). LOL International claims they laid down 1000 HP with one on fuel and a stock bottom end. Not sure how long it lasted, but they claim its true. I am to say the least skeptical of claimed numbers.


Tim, buddy.....:gr_cheers:
:D

[dalpilot]

Just show up, and the seats there.

[banksforddiesel99]

shoot brad, for all i know, your a ghost, i ain't never seen a pic of you, and just barely of your truck.... LOL

[heinzboy]

shoot brad, for all i know, your a ghost, i ain't never seen a pic of you, and just barely of your truck.... LOL



I don't think Brad will fit in a ranger, he is like 6ft4 280.......J/k

[dalpilot]

WD-40 and a log spliter will help out.

[LvTitan]

Anyone had the crankshaft assembly balanced? Replaced the connecting rods? put in main studs? Basically, rebuilt the bottom end? If so, what did you do and how has it run? Any issues? What would you do differently?

Ralph

i've had my bottom end rebuilt. used factory bearings, but they were sent out and coated w/some sort of dry film lubricant or something. matt had it done for me, supposed to lengthen the lifespan of the bearing and prevent low oil wear.
kept the stock rods/pistons, but put in ARP studs while it was apart, and larger injectors. basically rebuilt the bottom end from the ground up, but all the same stuff went back in except for new bearings. the pistons looked great, the cylinder walls still had factory cross hatch looked good.
have had no issues, and i wouldn't do anything different.

[LvTitan]

here's some goodies going into it the next time i tear it apart:
ceramic coated pistons
http://i261.photobucket.com/albums/ii47/LvTitan/truck%20stuff/rebuild021.jpg
hypermax connecting rods
http://i261.photobucket.com/albums/ii47/LvTitan/truck%20stuff/rebuild001.jpg

billet flexplate
http://i261.photobucket.com/albums/ii47/LvTitan/truck%20stuff/rebuild002.jpg

[LvTitan]

Ralph, I am in the process of doing just that. I have lightened the crank, bored the block, honed it with a torque plate, and it will be balanced as soon as my custom billet rods from Crower get here. Everything will be balanced to the flex plate. Like Diesel71 said, I really can't see studs making a difference in the bottom end. The crank is tough, and the bed plate holds everything snug. I'm planning to spin the thing up to the 6000 range, apparently the 6.0 really makes power above 5K on the tack.......really. With billet rods, custom ceramic coated pistons, and coated bearings everywhere that shouldn't be an issue. I am dropping the compression down to around 14:1 also, and cramming a shit load of air in there with a divorced twin setup. Hows it gonna run??????? I have no idea, but I'm gonna find out.

i would be concerned for your LPOP at those RPM's, even with a fluidampr.
you may want to consider bypassing (the front cover we've designed is very expensive though) and going drysump, but that's quite involved.
at best i would consider "shaving" the gears down for more clearance in the LPOP and making sure your crank is PERFECTLY straight and balanced, because once you pass the 4000rpm mark, the LPOP tends to bind and snap, and there goes all your oil pressure and your freshly built motor.. just something to think about, i've seen it happen a few times and it's not pretty.

[LvTitan]

What do you mean by divorced twins? Does that mean a turbo dedicated to each bank of 4 cylinders? If so, can that lead to 60-80psi? I don't know much about the limits of single turbos. Please educate me!

Ralph

yeah, this is what is technically called twin turbo..
most of the "twin turbo" setups you see on diesels in the magazines are actually "compound" turbos...
there are also "sequential" but that's another story altogether..

it is possible to see 60-80psi w/a single turbo (divorced twin) setup, but nothing comes free, the low end spooling must be sacrificed (read: lots of lag) to get such a setup, i'm assuming that's also one of the reasons for his NOS setup, nos is great for spooling large turbos ! ! !

we run a 91mm on a 3L 6cylinder and the spray turns that thing on like a switch ! !

[LvTitan]

That would be great, but I am not gonna make any predictions. Personally I am building this truck to have fun, not to set the world on fire. If it comes together like I hope it does it should be a hoot at events. It started as a thank you to our members at Comp D, and will stay that way. Its gonna have 2 seats for a reason, to give rides. Thats the plan, and I hope it stays that way. I do know that a properly built 6.0 has laid down close to what you predict on Fuel alone. (sorry, I cannot give any details or names, ((I know thats gonna ge me crucified))). LOL International claims they laid down 1000 HP with one on fuel and a stock bottom end. Not sure how long it lasted, but they claim its true. I am to say the least skeptical of claimed numbers.

by stock bottom end do you mean stock rods/pistons ??
i dont see that holding up very long IF it turned out to be true, but at least the block and bearing saddle is up to the task as far as bottom end is concerned, the girdle setup seemed bullet proof when was looking at mine.

[dalpilot]

Reply, yeah stock internals.