No cover means less noise when the converter bolts start to back out.

Also, you don't have to take the cover off to tighten them back up.

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Official Cookie and Mater Tormentor.

More pics and news on this project, please.

Doc: Just a thought for future buildups, you could use a tool like thishttp://www.patentstorm.us/patents/pdfs/ ... 76931.html to machine grooves into your cylinder wall reinforcements so as to use copper sealing rings. iirc you were against machining the block and head into corresponding profiles to achieve a similar effect as it would shift the cylinder bores.

Edit: tool available here:http://www.summitracing.com/parts/ISK-100-GRM/ Many thanks to turbo66valiant for that info.

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72 dart acquired 12/08 /6,holley2b, mopar perf intake, mopar perf header, cam, built motor,904 finally re-installed, 8.75....still needs sorting out.
99 dakota 318 5 speed reg cab picked up 9/09; Trans finally fixed! woohoo!

Hi Doug!
That is an awesome project! Can you tell me what the alloys of the block and the head are? Also, what is the material of the sleeves? I didnt read all of the thread, but what exactly is failing? There are so many new materials in the market now, I may be able to find something that will work.

Andy Z

The SL6 Aluminum block is a special hypereutectic, die-casting alloy, SAE # A310 alloy. The cylinder liners, as far as I know, are grey iron. The prototype aluminum head is 356 aluminum.

The special "copper clad" head gasket is pretty well engineered for it's day, (1960) but todays gasket technology could improve on it's sealing and flexibility. (less re-torquing)

The main issues will always be:
- Different expansion rates of the materials.
- Greater expansion rates when using an aluminum head with an aluminum block.
- Less overall assembly rigidity
- A narrow sealing surface at the top of each cast iron cylinder liner.
- Vibration / deflection of the free standing cylinder "barrels".

My press-on iron repair ring fix with this engine helps address the last 2 issues. A new technology head gasket could help with the other issues.
DD

So soon we will have an aluminum block made of T310 without the floating sleeves!

And of course the closed chambered cross flow alloy head! (Hemi?)

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

FYI....

"Beralcast® 310 is used primarily for wrought products, such as select, directional, high-strength tube, rod, and thermal control applications. It is the extruded version of Beralcast® 191 and shares the same composition.

General Beralcast® information: High damping. Lighter than aluminum and titanium. Higher ductility than pure beryllium. Several times stiffer than either aluminum, magnesium, or aluminum-based metal matrix composites. Can be cast into complex shapes. The microstructure consists of a primary beryllium phase in a continuous aluminum matrix. Beralcast finds uses in satellite components, avionics packaging, aircraft/missile systems, wrought products, computers, motion control, and golf clubs."

Information provided by Starmet Corporation.

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64 A100 PU 170 /6
Salisbury, NC

Any Updates? Anyone got any info on peak combustion pressur? Trying to do a stress analysis on the cast gray iron sleev.
Thanks

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64 A100 PU 170 /6
Salisbury, NC

no threadjacking!.... but seriously start a thread with pics/info about this "hemi" head. Also somebody already had a thread on here about a homemade modern hemi headed six. Ran well but no room for an intake. Had an orange valvecover, it's out there somewhere
-Ron

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72 dart acquired 12/08 /6,holley2b, mopar perf intake, mopar perf header, cam, built motor,904 finally re-installed, 8.75....still needs sorting out.
99 dakota 318 5 speed reg cab picked up 9/09; Trans finally fixed! woohoo!

I can't get my printer to work with my dreams and fantasies..................

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

I meant Moparedd. His topic line said a head was in developement. -Ron

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72 dart acquired 12/08 /6,holley2b, mopar perf intake, mopar perf header, cam, built motor,904 finally re-installed, 8.75....still needs sorting out.
99 dakota 318 5 speed reg cab picked up 9/09; Trans finally fixed! woohoo!

Doc,

How is the ring repair, head gasket seal holding up? Any problems so far?

I am sad to report that Buster done busted on me.

On Sunday, 9-27, on my way to the South Bay Area SL6 Club meet, Buster tossed it's #1 connecting rod right out the driver's side of the engine block.

We towed the car home and I already have a back-up engine installed into the Dacuda... a little more tuning on that engine and I should have the car back in service. ( I hate non-running cars)

I will do an autopsy on Buster later but I already know that the block is junk... yes, I could weld it back together but that block was already at the "end of the line" when I started.... it's likely not worth spending any additional time or $$ on it.

I will take some photos once I get the pan off.

the good news... looks like the head gasket held, even thru the rod failure.
DD

Sorry to hear of the rod failure. I'm sure this was a profound disappointment. It is interesting to know that there is a solid fix to the block erosion at the top of the bores.

Scott.