6.0 FI block Prep
6.0 FI block Prep Posted in internal, but no replies there... Maybe some of you high-boost fellows who did the work yourself can help me out more anyway.
I have a slightly used 6.0 iron block that will be used in my new turbo project. She's ready to take to the machine shop. I plan on telling them that I need the following done, as far as block prep:
Deburred
Machined for O-rings
Cylinder honed (if I can get away with it), or bored if necessary (would 0.030 or 0.010 be best, and why?).
Decked.
Cleaned.
Am I missing anything? Hopefully I'll get some replies... I can't seem to get responses out of USERS, MODS, and SPONSORS these days!!
I have a slightly used 6.0 iron block that will be used in my new turbo project. She's ready to take to the machine shop. I plan on telling them that I need the following done, as far as block prep:
Deburred
Machined for O-rings
Cylinder honed (if I can get away with it), or bored if necessary (would 0.030 or 0.010 be best, and why?).
Decked.
Cleaned.
Am I missing anything? Hopefully I'll get some replies... I can't seem to get responses out of USERS, MODS, and SPONSORS these days!!
Don't know if the O-rings are necessary, but you will want to have the cylinders honed with a torque plate (which simulates the head being torqued on) and I believe most blocks can go .030 over without sweating it. From what I understand it's also in your best interest to have the mains realigned.
Originally Posted by Drake
Posted in internal, but no replies there... Maybe some of you high-boost fellows who did the work yourself can help me out more anyway.
I have a slightly used 6.0 iron block that will be used in my new turbo project. She's ready to take to the machine shop. I plan on telling them that I need the following done, as far as block prep:
Deburred
Machined for O-rings
Cylinder honed (if I can get away with it), or bored if necessary (would 0.030 or 0.010 be best, and why?).
Decked.
Cleaned.
Am I missing anything? Hopefully I'll get some replies... I can't seem to get responses out of USERS, MODS, and SPONSORS these days!!
I have a slightly used 6.0 iron block that will be used in my new turbo project. She's ready to take to the machine shop. I plan on telling them that I need the following done, as far as block prep:
Deburred
Machined for O-rings
Cylinder honed (if I can get away with it), or bored if necessary (would 0.030 or 0.010 be best, and why?).
Decked.
Cleaned.
Am I missing anything? Hopefully I'll get some replies... I can't seem to get responses out of USERS, MODS, and SPONSORS these days!!
Define slightly used?
If the bores are in decent shape, i wouldn't bother with much more than a hone (if not requiring more). Or unless you're after every last cube
If it didn't have issues with bearings in the past, leave the caps and line bore alone.
Unless you're planning to run 25+ psi i wouldn't bother with the o-rings either. Stick with an MLS gasket and you'll be more than fine to any level you can possibly use on a daily basis.
If the bores are in decent shape, i wouldn't bother with much more than a hone (if not requiring more). Or unless you're after every last cube
If it didn't have issues with bearings in the past, leave the caps and line bore alone.
Unless you're planning to run 25+ psi i wouldn't bother with the o-rings either. Stick with an MLS gasket and you'll be more than fine to any level you can possibly use on a daily basis.
Not sure of the exact miles, but the bores seem to be in very good shape. There is still plenty of cross hatching visible, no lip on top or bottom of bore, and no major wear on the bearings or cam lobes. There are some light vertical scratches on the "top" side of the bore, but you can't even feel them with your fingernails. I really think I can get by with a hone... strength > cubes. 
Thanks for the help guys, this is an ambitious project for me, but I feel good about pulling this off.
I'll have my engine build man check the caps and line bore.
Are torque plates necessary if I'm only going with a hone?
Thanks for the help guys, this is an ambitious project for me, but I feel good about pulling this off.
I'll have my engine build man check the caps and line bore.
Are torque plates necessary if I'm only going with a hone?
Originally Posted by Drake
Are torque plates necessary if I'm only going with a hone?
You know... I just thought of something else. As I see it, there aren't any downsides to O-ringing this block. Does O-ringing place any restrictions on the type of head gasket you can use, or otherwise restrict you in any way?
From what I've read, it isn't an expensive option... just sounds like good insurance. (Yeah, I know, detonation will still destroy an o-ringed head setup...)
From what I've read, it isn't an expensive option... just sounds like good insurance. (Yeah, I know, detonation will still destroy an o-ringed head setup...)
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Originally Posted by Drake
You know... I just thought of something else. As I see it, there aren't any downsides to O-ringing this block. Does O-ringing place any restrictions on the type of head gasket you can use, or otherwise restrict you in any way?
From what I've read, it isn't an expensive option... just sounds like good insurance. (Yeah, I know, detonation will still destroy an o-ringed head setup...)
From what I've read, it isn't an expensive option... just sounds like good insurance. (Yeah, I know, detonation will still destroy an o-ringed head setup...)
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I thought about that, but with what people are doing with stock sizes, I figured I'd do without the distortion that will be caused by the larger bolts.
If she won't hold together, it isn't a big deal... I'll pull it and do whatever is necessary.
If she won't hold together, it isn't a big deal... I'll pull it and do whatever is necessary.
Originally Posted by Lawnboy
GM MLS head gaskets, not need to O-ring, wast of time and $$$$$
Dont use the cometic, lot of leak problems with them.
Dont use the cometic, lot of leak problems with them.
Originally Posted by Drake
Why is that?
Cometics are hard as a rock and do not comform around irregular surfaces well like copper does. This is part of the reason many of the Darton sleeve blocks leak with the cometics if the sleaves are left sticking up at all.