hans14914

I had planned on going down and working on the parts car, but some plans changed, and ended up having the day off.

I have been playing around with a couple concepts, and always have to trudge out to the garage to check fit and measure clearances. Figured its about time to modernize the process and start modeling core components so I can check these fits on from the comfort of my chair or at the office.

So in about 5 hours or so of time (with several distractions) I went from a block to the attached model. I hope to get a head done soon to finish the upper end of the system.

Its nice having clean engine cores on hand, lets me bring stuff into the house and work.

Back to work,
Hans

SeanR

I think I know where this is going to go, and I am envious.

Speedtoys

Cant wait.

hans14914

Did the crank pulleys this morning. Heads next.

brealytrent

What program are you using to model these on? Looks sort of like Blender.

Ducman82

WAY to much free time! :-P

depami

Way cool Hans.

Are you manually measuring and creating or do you have some sort of 3D measuring equipment imputing data for you?

What is your motivation: Entertainment/Occupy time; Education/Illustration; Reverse Engineer/Manufacture; Baseline Dimensions for Aftermarket Parts; Etc.?

hans14914

Mostly a combination of 2D CAD (Solidedge 2D and dont laugh, sometimes Via CAD as it is so stripped down and fast for rough sketching) and then SpaceClaim for making solids.

SpaceClaim is amazing software, and it has powerful 2D CAD editing and repair tools, but its clunky to draw a whole profile in. With complex flanges or the pulley profile, It is laid out in other 2D software imported as a DXF then converted to a surface and manipulated in 3D.

I have a purpose in mind for these drawings, trust me, not doing it because I am bored. People will jut have to wait and see.

Thanks
Hans

depami

Guess we'll just have to wait and see what cool stuff you're up to.

Is the XYZ for the pulleys intentionally different than the block or was that just an oversight?

hans14914

I got a decent portion of the head done last night. I just need a good representation of clearances for my particular project, so its not as detailed as the block valley or pulley drawings.

I was tempted to finish it at the office, but figured I would get strange looks hauling a head in and having it sit on the desk. So today I took a first stab at making a new male connector housing for the 6-pin Junior Timer connector used on the MAF. Apparently, there are no loose connectors available or ever made. I want a new MAF plug, so a couple hours later, we have this, which looks like it should work when inserted into a TE provided female housing. It is designed to used the JT "tabs" as trying to make a part compatible with the JPT was kind a of a hassle.

I hop to knock out the rest of the head and some other parts tonight, maybe a rough implementation of the valve cover.

Hans

michael j wright

Just thinking back to my college day's, and all the time it would have taken to draw these up on the board.

hans14914

Just finished the intake ports and coolant ports on the head side. You would be amazed at the difference in the port size of the intake versus the head. There is also quite a bit of difference in the shape of the port in the head from cylinder to cylinder - mostly around the injector area.

Also, oddly enough the coolant port in the head is somewhat shrouded by the coolant bridge, kind of odd to add a flow restriction like that.

I wonder what simple gasket matching on a 928 head and intake could do, I am willing to bet there could be some cheap gains that way.

Will post renderings later. Right now everything is still 2D.

Hans

69gaugeman

The GT engines did just that. Matched the ports to the manifold.
That and cams gave you 10 extra horsepower.

Lizard928

The "port matching" on the GT is not what I would call matching.
The S4+ intake gaskets don't really allow a true port matching experience.

Rob Edwards

Sure they do, you just have to be crazy enough to port-match the gasket too.