LB7: Motor Build thread
- Thread starter TrentNell
- Start date
not to answer for trent but i would say 900 or so. building the motor is not going to make any moe power, hes just getting it to hold the power he already has.
i have no proof just an opinion.... but here goes....
camo with your pistons and spray think about an oxy acetylene torch... when you squeeze the handle and increase the o2 you get a much more intense heat and 'cutting power' thats my opinion on why your pistons where so eroded and trents were not.
and i agree on the twins torque on the bent rods. twins torque is insane with how quick it comes on.
camo with your pistons and spray think about an oxy acetylene torch... when you squeeze the handle and increase the o2 you get a much more intense heat and 'cutting power' thats my opinion on why your pistons where so eroded and trents were not.
and i agree on the twins torque on the bent rods. twins torque is insane with how quick it comes on.
Like we talked about on the phone yesterday, don't skip some of the basic cheap mods. Un-bolt the reluctor wheel on crank, loc-tite the bolts and re-torque them. Get the crank keyed and replace the main bearings. If you aren't doing main studs then an align hone isn't typically necessary.
wow, that's an impressively low number. Are you doing any headwork? what did you decide for sealing the heads to the block?
It was good talking with you yesterday Dustin , and thanks for the advice
800 hp with spikes in the 900 range when i run it all out for a few big events a year .
you can clean up all the surfaces yourself , I am saving a good bit of money on parts , discounts from freinds , parts from the different sites for sale area's and all the machine work is being done by us ( cutting pistons and keyways ) .If i was biuilding a motor that would be driven on the street and have a fair amount of miles put on it i would do alot of things different but this motor will get 500 miles put on it (maybe) in a season and only has 69k on it to begin with , and have some bigger plans motor wise for next winter so no since going full tilt this time . I am cleaning up the heads and installing all the valvesprings and hardware myself and i am staying with ARP studs for now .
No , re-using the piston rings , and marked carefully so rings and pistons will go back into the hole they came out of .
kinda but it was ran with head studs before the motor was ever torn down and seen no ill affect ? And I am running head studs on my other truck with a stock assembled short block and so are alot of others .
Edit : To add further , part of my goal here is to run the truck this year on a minimal build $$ wise, to see what REALLY needs to be adressed in the motor when i do my full tilt build next winter . There are alot of things done IMOP that are smart but not absolutly nec for the type of use my motor will see , and how often ( mileage wise ) it will be torn down . Maybe i am way off in left feild but thats my opinion and if i am wrong i will find out soon enough :rofl:
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I agree trent. There are SOOO many dmax armchair builders/engineers on the internet, and just on/give advice based on hearsay and what "sounds like a good idea" and "its an extra procedure that requires extra effort and a special tool, so it probably means it will make the motor better". Im NOT saying this as a shot at anyone in this thread, I want to make that clear, this is just a general observation that I see ALL around the internet on EVERY diesel forum...seems like to me many of the people giving advice on motor builds and stuff like this have never even built one themselves.
I didnt torque plate whatever my built motor. I didnt even "cycle" the head studs and re-do their torque every 78.356 miles, and in the 15,000 miles of hard abuse/racing/towing, do you think my headgaskets (or anything else, right up until the piece of crap rods broke) ever had a problem??? no...
ben
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In my eyes its one of those things that shouldn't be overlooked completely but if its good without doing it its good and not needed.
Engines
Do most know why certain name engine shops(Gas or Diesel) make more power than others? It's all in the small details. That's not a slam against anyone on this forum also. Jeff
Do most know why certain name engine shops(Gas or Diesel) make more power than others? It's all in the small details. That's not a slam against anyone on this forum also. Jeff
Don't have the answer to that one Ben but all the small things are what make the differences. I know one racer, and he is big time, that doesn't believe in the small things when assembling. Needless to say they break a lot and didn't make it to the finals and they have been champions for mulitiple years. I guess his philosophy is that they will pull it apart enough in between that the small things don't matter. Good luck with the build Trent. Hopefully it will prove useful to a lot of us in the future.