Slant Six Forum :: Buster - Long Rod, Light Pistons, Light Crank Alm. Block SL6

Some argue that leaving the cover off helps converter cooling but have have no info to back-up that claim.
DD

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
DD

Quote:

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
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?)

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

Author:	slantzilla [ Sun Sep 06, 2009 5:20 pm ]
Post subject:
Quote: Some argue that leaving the cover off helps converter cooling but have have no info to back-up that claim. DD 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.

Author:	gmader [ Mon Sep 07, 2009 8:55 am ]
Post subject:
More pics and news on this project, please.

Author:	adiffrentcity [ Mon Sep 07, 2009 10:57 am ]
Post subject:
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.

Author:	AndyZ [ Mon Sep 07, 2009 1:23 pm ]
Post subject:	Gasket material
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

Author:	Doc [ Wed Sep 09, 2009 11:20 am ]
Post subject:
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

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Buster - Long Rod, Light Pistons, Light Crank Alm. Block SL6 https://slantsix.org/forum/viewtopic.php?t=29183	Page 9 of 13

Author:	Rug_Trucker [ Wed Sep 09, 2009 4:20 pm ]
Post subject:
Quote: 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 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?)

Author:	bigviking0001 [ Thu Sep 10, 2009 4:55 am ]
Post subject:
FYI.... "BeralcastÂ® 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 BeralcastÂ® 191 and shares the same composition. General BeralcastÂ® 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.

Author:	bigviking0001 [ Tue Sep 15, 2009 1:06 pm ]
Post subject:
Any Updates? Anyone got any info on peak combustion pressur? Trying to do a stress analysis on the cast gray iron sleev. Thanks

Author:	Moparedd [ Wed Sep 16, 2009 9:29 pm ]
Post subject:	a hemi slant six head is being developed on the west coast -
Quote: Quote: 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 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?)

Author:	adiffrentcity [ Thu Sep 17, 2009 11:17 am ]
Post subject:
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

Author:	Rug_Trucker [ Fri Sep 18, 2009 6:26 pm ]
Post subject:
Quote: 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 I can't get my printer to work with my dreams and fantasies..................

Author:	adiffrentcity [ Sun Sep 20, 2009 5:56 pm ]
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I meant Moparedd. His topic line said a head was in developement. -Ron

Author:	cavisco [ Wed Oct 07, 2009 1:38 pm ]
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Doc, How is the ring repair, head gasket seal holding up? Any problems so far?

Author:	Doc [ Thu Oct 08, 2009 6:17 pm ]
Post subject:
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

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Author:	cavisco [ Thu Oct 08, 2009 6:24 pm ]
Post subject:
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.