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| anybody tried welding combustion chamber-better quench? https://slantsix.org/forum/viewtopic.php?t=15333 |
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| Author: | gmader [ Fri Dec 09, 2005 5:59 pm ] |
| Post subject: | anybody tried welding combustion chamber-better quench? |
Hi all, I was just thinking about slant heads and porting, etc. It occured to me that the darn open combustion chamber was still a limiting factor. Has anybody tried welding up the chamber, machining it flat, and closing it up? This link http://moparmusclemagazine.com/techarticles/5115/ seems to suggest that people have done this with big block heads. Thoughts? |
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| Author: | james longhurst [ Sat Dec 10, 2005 6:06 am ] |
| Post subject: | |
i have heard of guys trying to make the closed chamder "915" heads out of "906" castings by welding them up since both castings are similar otherwise. i have no idea if it works or not, but anything is possible. a similar result could be had with a dished piston or what kb has been doing with their "step dish" design recently. some chevy guys i know call them"reverse dome" and have been popular with guys running in circle track classes where a certain stock cylinder head must be used. i guess the shape of the dish directs the charge to the center of the piston? i seem to recall reading about this, but not sure where. perhaps similar pistons could be made for a slant? -james |
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| Author: | Tom Drake [ Sat Dec 10, 2005 8:45 am ] |
| Post subject: | |
You could talk to Brent Laney or Mark Goodman. I believe that is one of the tricks they used on the Green lancer. Seymour did a complete article on this car in one of the newslettes. I will try and dig it up. |
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| Author: | Wild1_Robertson [ Mon Dec 12, 2005 2:32 am ] |
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I ran 906 heads and Arias reverse deflector pistons in my last big block. worked well. |
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| Author: | Tim Keith [ Mon Dec 12, 2005 8:57 pm ] |
| Post subject: | |
The new "hemi" has reverse dome pistons to improve quench. |
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| Author: | Doctor Dodge [ Thu Dec 15, 2005 5:11 am ] |
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It is hard to build quench into a 225 SL6 because of the .140 negitive deck and small chamber size. You either end-up with real high compression ratio or a "top heavy" piston with a "hump & dish" design. Bottomline, it is more troble then it is worth in added performance. DD |
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