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| is a turbo worth it? https://www.slantsix.org/forum/viewtopic.php?t=42903 |
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| Author: | deathly_hallows [ Wed Dec 15, 2010 8:35 pm ] |
| Post subject: | is a turbo worth it? |
i have a 73 duster with a slant six i have a new head that needs machine work but its mostly stock. how expensive would it be to put a turbo on it? what would be the best as far as power and price for a street rod. what other work is required to do this? thanx |
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| Author: | Sam Powell [ Fri Dec 17, 2010 5:40 am ] |
| Post subject: | |
How fast do you want your car to be? Turbos are a lot of work. And, there are many engineering issues to work out. It does make them considerably more powerful without sacrificing drivability. There are guys racing turbo powered slants that turn in the 12's or lower, but they are the exception rather than the rule. I think most turbo slants end up in the 14-16 sec range without serious race mods, but just the turbo boost in the 8 lb range. My car turned 16's last summer with serious tire spin on one rear tire,(no sure grip). You can build a slant to go almost as fast as the faster turbo cars with a big cam, exhaust work, head work, and a big carb much more simply. Do a search on the forum for engine builds and for turbo stuff under the engine section. This turbo section is a relatively new division of the forum and much discussion predated it elsewhere on the forum. If you want to build a seriously fast car, you will likely want to do some internal upgrades to help keep it together. Sam |
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| Author: | turbo66valiant [ Fri Dec 17, 2010 11:20 am ] |
| Post subject: | |
Quote:
You can build a slant to go almost as fast as the faster turbo cars with a big cam, exhaust work, head work, and a big carb much more simply.
Hmmmm... Not for sure if it will happen with a 74 Duster. Not the lightest car out there and you have to remember that all the things you mentioned = big money to do it properly NA and still alot of fiddling. All the really fast NA cars are 2300lbs and lighter. Cheapest route would be a power adder of some sort or lose the weight. If you want to build a seriously fast car, you will likely want to do some internal upgrades to help keep it together. Sam Say, can't wait till you get a rearend under that thing Sam. Should be a quick 12 second car. Later Ryan |
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| Author: | deathly_hallows [ Fri Dec 17, 2010 2:12 pm ] |
| Post subject: | |
sorry that was a mis type its a 73 and i do have 2 heads the stock one has a blown valve and the other is getting machined to increase the the compresion from 7 1/2 to around 8-9 to eliminate the miss |
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| Author: | deathly_hallows [ Fri Dec 17, 2010 2:14 pm ] |
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i would like to get the car close to 300 hp as it will be mostly street car as there arent any tracks close by me that i know of so i dont know what i would like as far as track numbers. |
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| Author: | Sam Powell [ Fri Dec 17, 2010 7:31 pm ] |
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How does Nitrous compare cost wise to the turbo stuff? I have never looked into it. I kind of always assumed the engine itself needed to be beefed up to take the stress. Thanks for the encouragement, but she is a long way from 12 seconds. I would be happy with low 14's. The 14 second cars I have owned were a blast to drive on the street. And, I don't know if this trannny could handle the power needed to get it down the track in 12 seconds. Sam |
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| Author: | Charrlie_S [ Sat Dec 18, 2010 4:29 am ] |
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Quote: How does Nitrous compare cost wise to the turbo stuff? I have never looked into it. I kind of always assumed the engine itself needed to be beefed up to take the stress.
Nitrous is easier and less expensive "up front", then a turbo. But there is no "free lunch". It is "pay me now or pay me later", as the N2O bottle needs to be refilled, at $3-$4 per lb. Depending on how much additional power is added, it may or may not require beefing the engine, with either method.
Sam |
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| Author: | Sam Powell [ Sat Dec 18, 2010 5:05 am ] |
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Charlie, What have your most recent time slips looked like? Have you had all three cars to the track? Sam |
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| Author: | Charrlie_S [ Sat Dec 18, 2010 7:15 am ] |
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Quote: Charlie, What have your most recent time slips looked like? Have you had all three cars to the track?
Yes all three cars have been to the track.Sam 66 Cuda at Hagerstown in May 13.5's at about 97 mph. 170 cubes & 3250lbs. Street/strip car. 66 Valiant Oct 25th Reynolds, Ga. 13.75 at only 78.30 mph. let off way early due to a bad vibration in the front end. 1/8 mile on the same run was 8.29 at 78.88 mph. 225 cid and 2680 lbs. Drag only car. The 65 Valiant has not been to the track since 1985. it would turn 13.4's at about 104 mph. 170 cid, weight estimate 2700-2800lbs. street/strip car. Hope to have it back out in 2011. I trailer any of my cars to the track. Anything can happen, so it does make it easier to get home. |
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| Author: | Rick Covalt [ Sat Dec 18, 2010 12:45 pm ] |
| Post subject: | Charlie |
Charlie didn't mention it, but when he came up to Hagerstown he ran his first run without nitrous and ran something like a 17.X. Then he turned on the bottle and knocked off almost 4 seconds! I was impressed. Rick |
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| Author: | 1974duster kev [ Sat Dec 18, 2010 11:54 pm ] |
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My current motor was built NA a bit shy of 10.1 compression with a good size cam and the good bits then tossed on a 100shot stock internals runs fine even after an empty bottle, the costly part for me was feeling the nitrous made me feel inclined to build a turbo motor to be much faster without a button  Kev |
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| Author: | 1972Scamp [ Tue Dec 21, 2010 1:07 pm ] |
| Post subject: | turbos for me |
I say yes it is worth it.... they produce good power and with the right equipment are adjustable with seconds, need more boost just turn it up and dail back the timing a touch. I am having a little trouble getting mine dailed in but it is a blast. My set up is a blow through that was build from ebay and Advance Auto. |
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| Author: | deathly_hallows [ Wed Dec 22, 2010 12:54 am ] |
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so whats the best turbo for a slant? i like to stick with brands but i see alot of talk about gm turbos why not stick with a newer chrysler turbo? |
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| Author: | Sam Powell [ Wed Dec 22, 2010 5:47 am ] |
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That is a complicated subject. I say that because I don't really understand it.  But, the GM 3.8 V-6 is so similar in size that it is a natural, proven choice. It is not the only one, but can be used with no complex math. You just say I want the stock turbo for an 87 Buick Grand National. If you want to upgrade from there, then the GN forums are full of information on that. And, I hung there for awhile. But, after you get that sorted out, you will be back here.Sam |
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| Author: | 1974duster kev [ Wed Jan 05, 2011 3:19 pm ] |
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I bought the precision dual ball bearing pte6262, i talked with turbonetics and they said for moderate boost the 60-1 turbo would work but for higher boost the 62-1 would fit the bill. The general consensus seems to be GN turbo will work great since it's a 3.8liter. Kev |
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