Bill
Good job. When you get it going good let me know and Ill come over for a test spin
Frank
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| FINALLY made some boost/horsepower... https://www.slantsix.org/forum/viewtopic.php?t=51063 |
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| Author: | 66aCUDA [ Wed Feb 13, 2013 8:07 am ] |
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Bill Good job. When you get it going good let me know and Ill come over for a test spin Frank |
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| Author: | billdedman [ Wed Feb 13, 2013 11:04 am ] |
| Post subject: | Barbeque pork, hickory smoked, Arkansas-style... |
Frank, Thanks for all your help!!! When we gonna have lunch at the Dixie Pig??? My treat... Bill |
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| Author: | Volare4life [ Mon Feb 18, 2013 9:38 pm ] |
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Good to hear of your killer success Bill, but the Supra head would have to be mutilated to work, its too short and the head bolt spacing is way off at least the 7MGTE head gasket i tried on my blown(up) block, but size and spacing wise the toyota 1jz/2jz are close to the 7M dimensions  also tried a nissan RB25, also a no go, dodge 2.7 (v6) is about as close as your gonna come, but still will have to weld 2 heads together, have billet cams made, you know no biggy lol but it is possible  -Mikie |
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| Author: | billdedman [ Mon Feb 18, 2013 11:26 pm ] |
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Quote: Good to hear of your killer success Bill, but the Supra head would have to be mutilated to work, its too short and the head bolt spacing is way off at least the 7MGTE head gasket i tried on my blown(up) block, but size and spacing wise the toyota 1jz/2jz are close to the 7M dimensions
Thanks for all that good info, Mike! Saved me a lot of time, down the road... also tried a nissan RB25, also a no go, dodge 2.7 (v6) is about as close as your gonna come, but still will have to weld 2 heads together, have billet cams made, you know no biggy lol but it is possible -Mikie I started this project wondering how much boost the /6 block infrastructure ccould handle withut blowing up. I guess that is my best bet (as opposed to a "hybrid"/adapted head.). If you can utilize enough boost, I think it doesn't really matter how many valves you have... LOL! Maybe Aaron or Will will answer that question for us; they are both running alcohol where detonation shouldn't be a limiting factor. 45 pounds anyone??? Maybe a 750 hp /6.... Stranger things have happened. Thanks again!!! Bill |
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| Author: | Volare4life [ Tue Feb 19, 2013 11:25 am ] |
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No worries bill its what I am here for lol -Mike |
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| Author: | RyGuyTooDry [ Sun Mar 24, 2013 7:40 pm ] |
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I'm sure one day someone will be making 750 horse on a slant haha, but until that day comes, everyone can dream I guess! |
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| Author: | billdedman [ Sun Mar 24, 2013 9:17 pm ] |
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When it happens, it might well be Aaron or Will; they both are planning on runing turbo/alcohol motors with hi boost. That is a formula for lots of HP, I think. Gasoline is a second-class fuel for making egregious amounts of HP because of detonation worries about cylinder pressure when you get really serious about increasing the boost AND enough spark advance to make some REAL power. I think when the 750 HP mark is reached (and, I really believe it will,) it will be an alcohol-fueled motor to do it. If you can run enough boost, you don't reallly need 4 valves-per-cylinder, I think. I'm thinking numbers like over 40 pounds and up. Keeping the crankshaft from exiting the bottom of the block and taking the main bearings with it might be a problem, but I have seen pictures of some pretty strong-looking home-made main supports. Maybe a girdle would be in order. When it happens, it might likely come from Australia. Just thinkin' out loud... Bill |
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| Author: | RyGuyTooDry [ Mon Mar 25, 2013 7:13 am ] |
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Im sure with enough head work it can be done with gasoline too. If the engine is bored enough over with some big pistons it will allow bigger valves if the head is re worked. With a big intercooler more boost can be achieved with less chance of detonation. With turbo cars everything is in the tune. My friends and I built a 550 whp Civic (1.6L forged everything with A LOT of boost.... 30#) that was still streetable. Anything is possible. But O think instead of worrying about making tons of power its time for someone out there to find a way for cars like ours to not lose so much horsepower in between the crank and wheels so there is no need for all the power to go fast. - Ryan |
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| Author: | sandy in BC [ Mon Mar 25, 2013 9:56 am ] |
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Cameron Tilley.......his street car. |
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| Author: | billdedman [ Mon Mar 25, 2013 11:31 am ] |
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Quote: But I think instead of worrying about making tons of power its time for someone out there to find a way for cars like ours to not lose so much horsepower in between the crank and wheels so there is no need for all the power to go fast.
Well, I hadn't thought about that, but if your car has a 3"-diameter steel driveshaft, a 904 with a cast iron clutch drum, and an 8.75" rear end, I suppose some gains could be made by using ighter components all around if it were financially feasible; a 904 with an aluminum clutch drum for less rotating inertia, a carbon-fiber lightweight driveshaft, and an 8.25" final drive instead of the heavier 8.75" (and, with an aluminum spool if one is available.) There are ways to lighten axles by gun-drilling them and scalloping the flanges. Lightweight wheels coukd aso be used to advantage.- Ryan Overall, it might save enough weight to make a difference. A Powerglide MIGHT work well, since turbo slant sixes seem to like being "held back" and the 2-gear system should do that, for sure... and, they arguably have less parasitic drag than a 904, but, maube not... Is this the kind of thing you were referring to? I don't see this turbo-motor liking a manual transmission. But, I think Cameron Tilley has run one; I see it in his videos. Wonder how that turned out? I just think there's an advantage to keeping a drag on the motor for the whole trip (as opposed to the period of time when the clutch is "in," regardless of how short a time that is.) Keep it spooled... Thanks for bringing that up; it's an interesting field of thought, I think, and has me wanting to pull the 8.75" out of our car and replacing it with a lighter, more-efficient 8.25". Bill |
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| Author: | RyGuyTooDry [ Mon Mar 25, 2013 1:18 pm ] |
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Yeah, that's what I was referring to! I'm building my car to be as light as possible and am down to 2900 from 3600, I need the slant to be relable but I also have the need to go fast, sideways, with the tires blowing smoke haha. I'm aiming to get down to 2800 lbs, but them the next move after the engine build is to lose weight in the drivetrain. |
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| Author: | RyGuyTooDry [ Mon Mar 25, 2013 1:22 pm ] |
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And youre right about turbo cars liking auto trannys better than sticks, load is always there. |
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| Author: | Dart270 [ Mon Mar 25, 2013 1:41 pm ] |
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Tilley's turbo car is 904 auto. Road racing NA cars are stick. 630 HP and 700 ft-lbs is old news with no crank girdle, on 20psi and gas. Lou |
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| Author: | billdedman [ Mon Mar 25, 2013 3:09 pm ] |
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Quote: Yeah, that's what I was referring to! I'm building my car to be as light as possible and am down to 2900 from 3600, I need the slant to be relable but I also have the need to go fast, sideways, with the tires blowing smoke haha. I'm aiming to get down to 2800 lbs, but them the next move after the engine build is to lose weight in the drivetrain.
Our car is a generation II A body ('64 Valiant, 4-door sedan) and we have it down to 2,680 with a roll bar, two lightweight buckets and harness, some lightweight carpet and subframe connectors. We have Cal-Tracs, a lightweight fiberglass hood and no front bumper, so we are not going to lose too much more weight without spending some serious $$$$ and, that's not going to happen.I think it's workable at this weight. Bill |
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| Author: | billdedman [ Mon Mar 25, 2013 3:13 pm ] |
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Quote: Tilley's turbo car is 904 auto. Road racing NA cars are stick. 630 HP and 700 ft-lbs is old news with no crank girdle, on 20psi and gas.
Wow; that is impressive!!!Lou Ryan's '66 Valiant goes 127 mph with a 727; probably could go 130 with a 904. I always figured 500 HP for that motor, but it may be more. Is Tilley's car that fast? I haven't seen any recent videos of it... Bill |
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