Obviously YOU didn't read the original post because NOBODY said anything about a RAW, UNMACHINED engine. The question was do you need to hone the cylinders before a basic re-ring job. Since the cylinders were machined by the factory when new, and the engine isnt be re-bored then yes a hone would be necessary in order to get the crosshatch pattern back in the cylinders to seat the cast iron rings correctly.

READ BEFOR YOU FLAME....

_________________
"That thing gotta HEMI in it??"

This discussion takes me back to the late 80's early in my career when I was working an engineering/production project for replacing the chrome lined locomotive cylinders (GM and GE engines) with cast surfaces. The concern was about durability and the million mile requirement before rebuild. These cylinders were about 8.5" dia.



The rail wheel gives a bit of scale to the pic (and no, that's not me with the yellow hat!)

The worn cylinders would be honed out with these massive custom built (my design) 4 stoned heads of progressively finer grit. We'd X-section areas, take all sorts of roughness measurements, map the 'valleys' to 'plateaus' to determine the 'lube to support area' ratios and measure cross hatch angles.

_________________
Cheers!
Al T

I shudder at the thought of footing the bill for three hours of setup time to simply dress the cylinders with a jig-boring machine. LOL. Maybe these guys at the car shows offering bore jobs under the table could justify firing up the jig bore machine on a saturday for about $600 after theyve opened the shop and disarmed the security alarm... For an engine you can get rebuilt to marine spec with a new rotating assembly for $1600 CDN. Of course that's if we aren't dealing with that brand new slant 6 block I found in the ditch yesterday.


Hey Al, that looks like wet liners for a Detroit Diesel 149 series engine. Am I right? I scored a FSM for that series engine and read it cover to cover. It was fascinating. I have a bus with a 6V71 Inclined engine and have been a 2stroke Detroit fan ever since. I'm actually trying to get into the marine industry to get a crack at the 900RPM monster motors in the commercial liners. We have a MAN/B&W Diesel office just next door in Oakville. Neat stuff!

_________________
I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

Let's keep it civil. Points can be made without personal attacks.

_________________
It's a Slant thing. Even I don't understand.

1974 Duster, EFI /6 soon to be turbo...

Get that Monkay! Get that nasty thing!!

Ok, if you insist. I took the naughty bits out.

_________________
I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

Finally! Someone who brings sanity to the topic.

_________________
"That thing gotta HEMI in it??"

heh... you shouldve seen the unedited version

_________________
I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

I'll take your word for it..

_________________
"That thing gotta HEMI in it??"

your statement: my reply: your reply: WOW nice one friend!!!!! do you see yet? LOL!!!

look, i realize a lot of people have no lives. being old, divorced, depressed whatever, and find happiness in coming to forums to raise their post count to look cool, and to put others down

i read these forums a lot, and i dont respond much, because there is a lot i dont understand about slants. this guy was asking to hone or not to hone, so i simply input a response with good advice. then a two bit jiffy lube mechanic comes up saying "i beg to differ" when you have clearly proven through your posts, that you dont have any idea of what your talking about. and i caught you on it.

i mean hey, if it brings you happiness trying to put others down to feel big, because your life sucks, thats fine, you just picked the wrong person to do it to.

its like i saw on TV on the news the other day ironically, this guy dessed up like a police officer, got a police car, and went around pulling people over, giving them tickets and everything. then know how he got cought? he pulled over an off duty police officer.
you just pulled over the police officer pal

_________________
e-mail me if you need a custom part for your car or engine made! machined or fabricated!
inthemorrow@hotmail.com

Pot calling the kettle black.

Morrow, you've got that right.
I respond because I do understand a lot about slants and other types of automotive issues too. Just trying to do something with the formal education I'm still paying for by helping others.

Again, know what you are speaking of before you flame someones info/opinion/whatever. I have worked long and hard in this industry and have gathered lots of experience over the years and am just willing to share it with my fellow enthusiasts. If you can't see or understand that then maybe you shouldn't respond to someones post....
I've got 16 years experience in the automotive field, both as an ASE mastercertified tech, and as a DC master certified parts tech. In case you cared (which by the sounds of it you don't) I am a parts manager at a deaalership now due to a career ending injury as a tech. So I think I'd say I know what I'm speaking of on the subject...
The feeling is mutual.



As to the rest of the slant enthusiasts out there that have the unfortunateness to have to read my responses to Morrow the allknowing, I am sorry, but I feel my responses are justified as I was clearly verbally attacked and singled out for no reason. Again, I'm just trying to share my knowledge with the public, so take it as you will.

Also, this is my last response to Morrow on this subject, as it has nothing to do with the original post, which I believe several others as well as myself have already answered the question several times over, with a similar answer. So as far as I'm concerned the flaming posts stop here with me. I hope that Morrow can be big about it and decide to do the same. If not, more power to you brother, and I hope whatever is wrong in your life to make it so miserable for you straightens itself out so that you can enjoy a happy holiday season.

_________________
"That thing gotta HEMI in it??"

Morrow, I promise you, none of us will EVER try to hone a raw, unmachined slant 6 block.



None have been cast for oh, about fifteen years or so! Let me explain something to you. It should be obvious that we're discussing overhaul procedures on old engines, not new engine assembly practice. I think those of us who don't own our own engine assembly plants will leave that job to the manufacturers. But for some reason that amuses us all but escapes logic, this premise is NOT obvious to you. So if you want to continue to argue this point, I for one welcome it. I can use a good laugh.

_________________
I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

dude, you dont need to stand up for your friend, it does nothing.
i nailed him on everything he said, and read his post, all he can do is come back with smart remarks and some crap to look like hes important. the fact of the matter is i nailed him, and he cant nail me back other than childishly, because i am right on this issue, he is not.
if you want to stick up for him thats fine, but im not here to attack people because i dont like them, im here to nail this newbie on stuff hes wrong on in this post.
and if you didnt get it yet, by raw block, i meant a block thats being rebuilt, because it has a lot of miles on it, raw...
and obviously he still believes, you can hone without boring, LOL!

_________________
e-mail me if you need a custom part for your car or engine made! machined or fabricated!
inthemorrow@hotmail.com

I stand alone on everything I say and do. I have no interest in 'cliques' and belonging to groups. I am here for my purposes alone. That being said:

"honing" as related to industrial machining is not one and the same with honing as related to engine rebuilding. Your terminology as well as your perception of the process is incorrect. It is NOT feasible to use a jig boring machine to hone an engine block for a piston ring replacement. Moreover, it is not necessary to bore cylinders in any but the most extreme of cases, unless you are deliberately modifying the engine. NO ONE suggesting honing and then boring a cylinder other than you. If the top of a cylinder is indeed belled out and has a ridge, using a ridge reamer to remove it is ALL that is required. It's a slant 6, NOT a lamborghini boxer.

You may continue to take this correct vs. incorrect struggle and turn it into a personal flame war for our viewing pleasure if you wish, it will NOT bother me. But do so at your peril and aware that you are treading on thin ice and are well on your way to being removed. I have read the archives and have detected not a hint of flaming to this degree prior to your flaming on this board, and I doubt its going to remain long. But you can take that up with the mods.

Like it or not, your lexicon of b/s is not going to win this one. Go phone around to the engine shops and see if you find any agreement among them. Or go ask your dad. And try listening. You might learn something.

And for crying out loud, stop saying 'dude'.

_________________
I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

Gunpilot, I'm trying real hard to be good. I swear.

_________________
I've been calling it as i see it for my entire life and that's not about to change. Take it or leave it.

Let's stay on topic and be nice guys.
Everyone, please read the original post before adding to this thread.
If we want to talk "opinions & politics", start a new thread on the Social Forum.
For me, I would like to hear more about the problems with chrome finished bores and what was done to solve the problem.
DD