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| new slant six blocks https://slantsix.org/forum/viewtopic.php?t=46951 |
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| Author: | Evilsizer [ Fri Nov 11, 2011 6:39 pm ] |
| Post subject: | new slant six blocks |
ok, so i recall reading that DD might do some blocks in that article posted. question is would they be cast or cnc milled? what metal would be used or would it be an alloy. out of the two methods if someone was to make block, which out be best. it does seem that if you have the cast for the block that could be the cheapest and easiest way to go. needless to say i have being thinking more and more about someone doing this. mainly since the last time i read that article was a bit before i owned my 540. in during that time i havent been here and reading about bmw blocks. it seems that bmw has a good core for us to use it seems to me, anyway. if one goes looking for any kind of M54B25 or M54B30. one then could clean it, melt it down and do either a solid block for cnc or just case the sl6 block. reason why im thinking those two blocks, is for the alu alloy mix they are using. i havent been able to figure out exactly what the mix is, "It is an all-alloy engine with Al-Sil block." is the only thing i got to go on. needless to say, i think it would work best since bmw had a problem with the gen before those. as with higher sulfur in lower quality fuels in some parts of the US and other countries. ok now even though the blocks listed from bmw have much shorter strokes. would the alloy really matter on how long the stroke is? i figured the alloy should be a good choice given the high compression ratio they run. maybe this is just a hair brained idea but it would be interesting to see someone do this. i know i would be interested in getting one of those blocks... |
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| Author: | SlantSixDan [ Fri Nov 11, 2011 8:04 pm ] |
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I don't understand the point of melting or otherwise reusing BMW blocks. |
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| Author: | exoJjL [ Sat Nov 12, 2011 1:36 am ] |
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Melting BMW blocks could be fun since it's not a Chrysler!   I think the idea about melting down those blocks are the alloy and the block size; BMW block size is similar. You find some rich dumb *** (you know what I mean) crashed it, you swoop the block up cheap(er). |
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| Author: | Evilsizer [ Sat Nov 12, 2011 6:56 am ] |
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yea i guess the round about way, reuse the bmw block to melt down. find a cast of the sl6 block and use the alloy to make a alloy sl6 block. im sure i could find a few in the local yards. i think it is worth looking into, not just to find a cast. then a way to clean and melt down the block... hell why not do that same for the head? |
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| Author: | ceej [ Sat Nov 12, 2011 8:24 am ] |
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I've got a small forge, and am building a larger one that might handle 1/8th the material needed to pour an engine block. The crucible will still be too large to lift and pour. There are some fundamentals that need to be considered here. It's not simple to maintain an alloy, effectively degass the amount of melt we're talking about, and to pour the part. Even a head will require more material than the average home forge can handle. Shrinkage requires that the pour be 25% larger than the part at minimum. When the material is melted down, components of the alloy are lost, and properties of the original material are compromised. Melt heat is critical. Too cool, too hot. Things like that. Some of the compounds that need to be added back to the melt are deadly if you suck them into your lungs. You may start with a desireable alloy, but the end result may not be acceptable for a variety of reasons. The equipment to make a pour of this size will be expensive, large, and extremely dangerous to be around. The sort of thing to give a fire marshal fits, and get your home owner's policy cancelled. When working with a forge, it isn't that you might get burned, it's a question of when. Everybody I know that works around forge equipment, even the size of my gear, has taken on a nice flesh roasting at one time or another. Prior to learning better, I was handling my equipment with welding gloves. At the temperature of an aluminum melt, I burned through them in 1/2 the time it takes to read this sentence. That was just skimming a 2# melt. It's possible, but it's a whole 'nother hobby. 2¢ CJ |
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| Author: | Evilsizer [ Sat Nov 12, 2011 12:00 pm ] |
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sounds like get a block of the alloy and having it machined would be the best way to go then. hmmm.... |
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| Author: | Charrlie_S [ Sat Nov 12, 2011 2:30 pm ] |
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Quote: sounds like get a block of the alloy and having it machined would be the best way to go then. hmmm....
We can't even get the finances to do an aluminum head, and we're talking about getting a block done? 
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| Author: | slantzilla [ Sat Nov 12, 2011 2:32 pm ] |
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Quote: Quote: sounds like get a block of the alloy and having it machined would be the best way to go then. hmmm....
We can't even get the finances to do an aluminum head, and we're talking about getting a block done? 
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| Author: | madmax/6 [ Sat Nov 12, 2011 6:18 pm ] |
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Sorry to bee offensive,but this is in the top 5 dumbest ideas I have read on this forum,MY opinion.Guzzi Mark |
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| Author: | sandy in BC [ Sat Nov 12, 2011 6:50 pm ] |
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I heard a Supra head bolts right on....why not melt down one of those instead? |
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| Author: | Brussell [ Sat Nov 12, 2011 7:06 pm ] |
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So you want to melt down some BMW blocks because they are of a good alloy? But you want to do it in a home environment to save costs? (And because well face it, it would be cool if that were possible and safe and cost effective). Wouldn't it be nearly as expensive (And safer) to just pay someone for this to get done? Is it possible for a home forge to even to do as much as a head? Sorry to be a damper. |
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| Author: | Evilsizer [ Sat Nov 12, 2011 9:10 pm ] |
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ok then slantzilla, what would be a good way then? it was just and idea, on top of that i never said in a home environment either for this im not that dumb. might be a dumb idea but i dont see anyone else with any ideas at all. it might be costly to do but you never know if/when someones luck will change with money. maybe they will want to try to do it, why not at least have some ideas out there about it. why not bring it up, who best to ask about this then the people that race them, build them up. if it wasn't for hair brained ideas in this world we wouldn't have half or all the stuff we do now. who would have thought to try to make a sugar substitute from corn? for that matter making corn plastics, E85, for starters. why all the in the box thinking? |
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| Author: | Brussell [ Sat Nov 12, 2011 9:45 pm ] |
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Good point. Sucrose comes from corn? Well I'll be dammed. |
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| Author: | Evilsizer [ Sat Nov 12, 2011 10:46 pm ] |
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no not sucrose but known as High-fructose corn syrup, it is in more things then people realize. http://en.wikipedia.org/wiki/High-fructose_corn_syrup there are other sweeteners from different plants beets to name one. http://en.wikipedia.org/wiki/Sucrose#Production anyway that is a bit off topic, i still would like to hear ideas. |
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| Author: | slantzilla [ Sun Nov 13, 2011 5:41 am ] |
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Quote: ok then slantzilla, what would be a good way then?
First off you could do a little research and find out how much work it is to actually cast a block. Second, you could do a search on here and find out how many times this and casting an aluminum head come up. We hear this crap about 14 times a year, and it is usually from someone who has no clue what it actually takes to do anything, or mainly no money and wants someone else to do all the work for them. Finally, there are many people on this board who make incredible amounts of horsepower with the iron parts we have. The problem we face right now is bore spacing being the limiting factor, and to fix that you need a completely new engine design. Look at big block Chevies and Mopars. When you get to the really good stuff that makes the big power, it kinda looks like factory motor on the outside (kinda) but nothing from a stock motor will work. Aluminum copies of stock heads and blocks are just band aids on bullet wounds to our combination.  You asked.
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