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bandit01
Dodge Dakota
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12/07/2005
03:18:33
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 Subject: Superchargers
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I was curious if anybody could recommend a good supercharger from owner experience. I am looking to upgrade to a higher output gear driven supercharger. Please help give me some ideas.
Thanks
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crow318
Dodge Dakota
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12/07/2005
08:19:00
| RE: Superchargers
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What do you have now?
Do you mean internal gears?
I have a procharger on an otherwise stock 318 and am running 280 rwhp and 350 rwtq. Thats around 55% gain from stock.
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bndit01
Dodge Dakota
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12/08/2005
03:29:00
| RE: Superchargers
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I right now have a powerdyne. It is an ok blower, but it has quite a few limitations. You can not run an intercooler, and unless you have the blower specially built with heavy-duty bearings. You can not run over 9psi. I had my blower worked on, by a turbo shop and It can run 13psi with no problems, but the internal belt may get worn out quicker. I have done some research and come to find out that if you run a 3 or 4 core intercooler which will give you the coolest air on the hottest day. You will loose up to 3 or 4 psi at the intake. So an example, if I am running 8 psi on the supercharger and have a 3 or 4 core intercooler which is what I want. I will only see 4 min. and 5 to 6 psi max at the intake intercooled. So I can not run more than 13 psi before I have major belt problems, right now. If I intercool that with a 3 or 4 core i will on see 9 or 10 psi intercooled at the intake. So to get 13 psi intercooled at the intake I will need a more powerful blower. I am looking for an internal gear driven centrif. If any one has a good supercharger in mind, that they have had experience with, please let me know. I can read about all the different specs all day, but i want to know from what people have experienced. Thanks
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crow318
Dodge Dakota
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12/08/2005
08:42:16
| RE: Superchargers
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Message:
Well, the procharger comes with an intercooler. The kit I have is what they call an 8/9psi kit. I had my truck on a dyno and got 7psi at the manifold at 4700 rpm's.
Based on the curves, I would need a 5300 shift point to get 9psi in the manifold. I am sure that’s why they say 8/9psi. Based on my research, I should be able to pick up about 1/2psi by changing the throttle body. It is currently a huge restriction.
The charger is P-1SC which their charts show good for 30psi and 1200 CFM and can support engines to 825 hp. I would imagine that’s all you need. If you get their kit, you can upgrade to the D-1SC which is 32 psi and 1400 CFM supporting 925 hp.
Anyways, a properly designed intercooler should have a loss of about 1 psi. The flow area is the most important factor in intercooler design. If you have an intercooler that is 3" thick (most common size) 8” tall and 24” long you have a flow area of 24 sq.in. (8x3) and can flow about 200 CFM with a 1psi drop.
If its 24” tall and 8” long, you have a 72 sq.in flow area and can flow 725 CFM with that same 1psi drop. That is an extreme case, but it gets the point across. You always see the huge front-mounts for turbo cars that are relatively short and very long with a horizontal flow. That’s not the best setup, but it looks cool and is functional. The better setup would be to have the core flow vertical with the tanks top and bottom. But then it would be too tall for the low cars. If you look at a large turbo diesel, they usually have the vertical flow type because they have lots of height to work with.
I have been in contact with an intercooler manufacturer and they say at 8psi, I should look for a 500 CFM core. You can do your own research here http://www.bellintercoolers.com/pages/AAMain.html
I hope this helps you out.
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SinCity R/T
Dodge Dakota
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12/08/2005
10:49:29
| RE: Superchargers
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http://www.dakota-durango.com/parts.php?page=superchargers
There are 5 major brands available for the 5.2/5.9L blocks, and 3 brands for the 4.7L V8.
The vast majority of the fastest R/T owners are using the Paxton Novi-2000, although the Vortech blower is also a pretty good unit. The ATI setup includes an intercooler but its mounting location and FMU tuning leave something to be desired. Kenne Bell's unit is bulky and is reported to have tuning issues, and the Powerdyne is regarded as the 'bang for the buck' blower but not something you want to keep long-term if you want maximum power.
SinCity R/T
http://www.dakota-durango.com
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crow318
Dodge Dakota
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12/08/2005
12:06:52
| RE: Superchargers
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I have to agree that the intercooler is in a bad spot.
However, the digital FMU that came with the kit is an excelent unit. It has a wide band gain for tuning the entire range, and sliders that very the fuel level at each respective boost range. I tuned it on a dyno and it worked great.
It has no provisions for tuning the timing.
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toolfan
GenIII
12/08/2005
13:08:44
| RE: Superchargers
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crow318 how is that blower on the 318? you have a awesome power gain. my friend has the powerdyne on his R/T and that thing has been nothing but a headache!! the s/c was in again to be aligned and it still squeals the belt under full throttle. he snap one belt and it mess up a bunch of stuff under the hood.
do you just have a blower on your truck crow318? did you or do you have to chip your truck to keep it from running into the governor? do you have any 1/4 times cause my buddies R/T smacks the rev limiter with every shift. he ran a best of 15.6 down the 1/4 and his truck is running 9psi and has a full exhaust with no cats.
[ and some mods to blow it up]
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crow318
Dodge Dakota
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12/08/2005
14:12:16
| RE: Superchargers
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I have no type of engine management and it shifts at 4750 every time. The engine never cuts, so I don't know where the limiter is. I had a hypertech but that advanced the timing too much. It also couldn't control shifts.
I have stock y-pipes, an aftermarket highflow cat and a catback. Other than that, its all stock.
I have never run it down the dragstrip. All I have is a few dyno runs. Based on weight and HP, I should be in the high 14's if you can beleive the theoretical #'s
The next invesment I'm going to make is a knock sensor. No point in spending lost of money to make extra power if its gonna wreck the motor.
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janesy
Dodge Dakota
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12/08/2005
15:09:08
| RE: Superchargers
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You guys should look into the J&S Safeguard.
http://www.jandssafeguard.com/
Can get them from Hughes, great piece of hradware. set it and forget it.
TOOLFAN, there must be something wrong with your Buddies R/T. I thought that they could run that stock. I would have thought it should have dropped him into the high13 low 14's. Although what was the altitude?
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toolfan
GenIII
12/08/2005
15:53:58
| RE: Superchargers
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the elevation is 2800ft and the temp was 68 or so.
he was wasting 1/2 sec at every shift from hitting the rev limiter. the R/T stock runs in the low 15s. his truck either ran a 15.6 or a 15.9 but that sucks considering my truck runs in the 15s with the 318 and like $200 in mods.
[ and some mods to blow it up]
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RJ
Dodge Dakota
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12/09/2005
15:00:22
| RE: Superchargers
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I have a powerdyn , Kammer cam 209-219@50 510-510 on a 114 centerline,1.7 rockers takes lift to about 540, M-1 singal plane,jba headers,hogged out T/B,B@G flash on my pcm, 10" 3000 stall,Cal-tracs. My best time so far is 12.01 @ 113. I have had a lot of problems with the charger. I am sending it to 928 performance for a race rebuild. My nexst mod is an sts turbo system To get away from chargers and there need to take hp to make hp. Hopefuly the powerdyne will do until then.
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Fed
GenII
12/11/2005
00:17:32
| RE: Superchargers
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RJ has MONAYYYY
'93 Dakota CC 3.9 auto
(4.10, limited slip, exhaust, intake, lowered)
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crow318
Dodge Dakota
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12/12/2005
08:56:30
| RE: Superchargers
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Message:
That sounds like a good strip setup RJ. Do you ever drive it on the street? I can't imagine with the high stall, M1 intake and larger throttle body that you have any bottom end.
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Fed
GenII
12/12/2005
12:07:38
| RE: Superchargers
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Message:
show us a picture that thing is probably unbelieveable!
what year etc. is your truck? engine?
thanks
'93 Dakota CC 3.9 auto
(4.10, limited slip, exhaust, intake, lowered)
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RJ
Dodge Dakota
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12/12/2005
21:53:50
| RE: Superchargers
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With the 3000 stall I go right into my power band. With a street tune I run about a 12.50. When I go to track I pull timing out and run race gas. It runs real good on the street.
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crow318
Dodge Dakota
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12/13/2005
10:22:17
| RE: Superchargers
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I know its kinda hopeless to expect good mileage on a high performance application, but what do you figure you get in town and on the highway?
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RJ
Dodge Dakota
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12/13/2005
15:09:13
| RE: Superchargers
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Around town about 13 on the highway about 17, as long as I keep my foot out of it.
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