Slant Six Forum
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measurement question
https://slantsix.org/forum/viewtopic.php?t=34895		 Page 1 of 2
Author:  Draginslant [ Thu Apr 16, 2009 5:27 pm ]
Post subject:  measurement question
Im working on a computer drafting and design degree and I'd like to be able to design a slant6 on autocad, mainly to hone my skills, but Im comtemplating using something like this design for my final project.. Im working on buyin some precision measurement tools, but cant afford them right now. Is there a website somewhere on the web? Ive been searchn for months and havnt been able to find what Im looking for.
Author:  Dart270 [ Fri Apr 17, 2009 4:46 am ]
Post subject: 
Welcome to the site, Draginslant, and I hope your degree program is going well.

If I might give a suggestion: What about drawing up the Slant Six cylinder head in detail in CAD?

There have been efforts to build an aluminum Slant Six head, and this could help the project along. Personally, I think this would be much more valuable to this whole community than anything to do with the lower end of the motor. Mods/improvements to the head design could be easily made starting with your CAD file.

All the best and thanks for listening,

Lou
Author:  Ed Mullen [ Fri Apr 17, 2009 5:16 am ]
Post subject: 
Quote:
Is there a website somewhere on the web?
I'm not sure I know what your question is.

Are you looking for a online retailer of measuring instruments?--I'm not sure how precise you need things to be given the variation in machined dimensions easily vary by thousanths (if not hundreths) of inches from casting to casting.

...or are you looking for published specifications/dimensions?

...or pre-existing cad data?

(If I was unclear on what it was you were asking for, there's a good chance that somebody who otherwise has an answer for you didn't get it either.)
Author:  Draginslant [ Fri Apr 17, 2009 4:22 pm ]
Post subject: 
The head is actually where I had started. I was compiling info from the original slant head, and looking at the way a hemi head is setup/works. Im trying to design something thats somewhat light, flows better than the original...

I am looking for published specifications/dimensions, I just mentioned the precision tools cause I dont want any one reading to think Im tryin to sit back and find the info Im looking for. Ive been looking and haven't been able to find what Im looking for.
Author:  Mister_Perkins [ Fri Apr 17, 2009 4:30 pm ]
Post subject: 
sounds pretty neat. I've done a lot of CAD programming in college. Its a lot of work. I also have some experience in 3d studio max and Zbrush, so if you need any help just pm me. thanks!
Author:  runvs_826 [ Fri Apr 17, 2009 4:44 pm ]
Post subject: 
Are you using autocad or solidworks? I wouldn't be to worried about changing the design to a hemi-head. You can if you want, that would leave a lot more room for you to design things. My suggestion would be to simply enlarge the head and keep the wedge design. This could involve closing the chamber up more, and less steep angles for flow. The hemi-head has to have canted valves which means rocker-arm setup is a pain and your intake would reside almost in your passenger fender. The other thought would be to get a roller rocker from a common v8 and move the shaft to fit them while still keeping the right geometry. Just this will keep you plenty busy!
Author:  Mister_Perkins [ Fri Apr 17, 2009 6:17 pm ]
Post subject: 
I use autocad 2000. Old skool :)
Author:  Ed Mullen [ Fri Apr 17, 2009 6:29 pm ]
Post subject: 
Quote:
I use autocad 2000. Old skool
As do I, but I most often design the interiors of Manhatten apartments, not cylinder heads.

I don't think of it as "old" since it's the most recent version that I have a copy of. (and the version number has the same first two digits of the present year--New years eve 2099 I'll be looking for an upgrade.)
Author:  MichaelS [ Sat Apr 18, 2009 6:31 am ]
Post subject: 
I use pencil and paper, real old school!
Author:  Draginslant [ Sun Apr 19, 2009 5:14 pm ]
Post subject: 
I've been reading a book from a motor shop class I had a few years ago and mainly focusing on the cylinder head section, which I believe Im half way through. My original ideas, were just thoughts off the top of my head. After talking with a buddy thats into mopars, i might just go with the original design, but make changes in the areas where the head is lacking. I figured make it where if actually designed right and built could interchange parts with old castings, but also be able to run roller rockers, as was previously stated.
I think that I may sacrifice an old head I have around to get all the measurements needed to design right now. We'll see.

Oh yeah, The school i goto lets me use AutoCad 08/09... there integrating the 09 into the curriculum, and Autodesk Inventor. I don't get to use solidworks, but have heard great things and when I get a sec will see if I can get my hands on a copy
Author:  '74 Sport [ Mon Apr 20, 2009 12:40 pm ]
Post subject: 
I wasn't sure about the question, either. Are you looking for the tools do do the measuring, like calipers and angle gauges? Or, are you looking for published dimensioned drawings so you can input the data into AutoCAD?

Maybe you just need to go this route: 3D Digitizing
That way, you can use your existing engine block or head as a model.

Very ambitious and commendable. I taught AutoCAD and solid modeling for a few years at our local junior college. It's not for everyone.

Good luck,
Jerry
Author:  Draginslant [ Tue Apr 21, 2009 1:37 pm ]
Post subject: 
I am looking for published dimensions for the whole engine.

I started tryn to pull thed head off a spare slant Ive got in the garage, couldnt get the head with an impact, so im soaking the bolts with lube to hopefully breakem loose tonight, cant find my breaker bar so its my only option.
That 3d program that was posted looked vary interesting, but probably way outta my price range. As for CAD, Im not perfect at it, but Ive picked it up rather easily, and am doing well in my classes.

I would rather do something automotive for my final project than go with an architectural project which seems to be what most do.

any who, thanks for the help guys
Author:  Draginslant [ Fri Feb 26, 2010 2:53 am ]
Post subject: 
Ok, so its obviously been a while since I posted on this, at first the group i'm in vetoed my slant idea, and when couldnt come up with better, resided on my idea. That being a slant6 block and rotating assembly. Was a major pain in the but gettin measurements, but got the majority. Should have a AVI video of it soon. Basically, took the 225 block measurements, that are a slight bit off in some areas like where the trans bolts and bolt placement for oil pan, but everything else should be very, within a couple .001 of being exact. Its stated as being made of 357-T6 aluminum, but i'm no engineer, with an 1/8 inch wall sleeve, and 1/4 inch space between cylinder walls for cooling. I think the design is awesome, kinda wish I had the means to get on made for myself, but prolly ain't happenin anytime soon. Other parts are as follows, 7.005 length X-beam rods, cant remember off top of my head the compression height of the piston, but it left for a .140 quench. Knife edged crank, that needs alot of work to resemble a crank anyone would run in a vehicle, but it works for the class. And finally 4 bolt splayed main cap. I had tons of fun workin on the project, and am wanting to start on a design for an aluminum hemi head... I know australians got them, so i'm sure it could be done, maybe add a few extras... who knows. If someone knows how we could get some GOOD castings based off a CAD design let me know, i'm all for puttin in a lil elbow grease for a project like that.
Author:  Doctor Dodge [ Fri Feb 26, 2010 3:40 pm ]
Post subject: 
I would love to get a copy of your block & parts data files.
Are the files in AutoCad?
I have the head blueprints and measurements if you need those.
DD

Image
Author:  SlantSixDan [ Fri Feb 26, 2010 7:57 pm ]
Post subject: 
Cool project you've got going on! Please keep us updated!
Quote:
wanting to start on a design for an aluminum hemi head... I know australians got them
No, they did not. They got a "Hemi-6" engine starting in '70 that was all iron, never aluminum. There is now an aftermarket company producing an aluminum Hemi-6 head -- very costly. There is no interchangeability between the slant-6 and Hemi-6 head or other components.
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