|10-19-2012 09:50 PM|
|vinniekq2||sorry about the typo,its obviously a "671" roots blower,not 672.|
|10-19-2012 09:48 PM|
bigdog,we have a fella here Harvey,He has a 390 inch stroker with a blower,fuel injection,similar cam as to what I use.He makes 980 rwhp.Its a daily driver. These cars are not that bad on the street.The only problem is fuel consumption. horse power burns fuel.
On the other side of the coin,a neighbour has a super charged 350 in a rat rod.dual carter AFBs,672,headers with cutouts,super fat rear tires,looks like it could fly if it had wings,,,
runs 12.0s on a good day. kinda sad,but looks/sounds mean,just doesnt have the big cam and other items to make it a rocket.
|10-19-2012 09:31 PM|
|bigdog7373||He said it was driver way before he mentioned racing. To me that means racing comes second. If he dropped the compression on his current plan here and put a blower on he will make more power than his current plan. And that extra power will be more than enough to make up for the weight of the blower and then some. And since it's better mannered he will enjoy it more when driving on a day to day basis. If he said hey this is a track-only car then i could understand the high compression and giant cam But on a car that will be mostly street driven it will benefit more from a modest engine with a blower than a crazy lumpy race motor.|
|10-19-2012 09:19 PM|
I was trying to help you bigdog.Im not arguing.What you said does not apply in this situation.I just wanted to help you understand what rice is talking about and why your alternative ideas did not apply here.Rice is racing at a much higher than usual level and because of that its harder to follow.Its like,why do some people race a 4 cylinder import when they can have an american v-8? There are as many answers as there are different cars.No one is really wrong or right if they like what they have. The Honda guys love taking their 280 h.p. hondas and beating 400 h.p. v-8s.
Think about how you would feel if your 3700 pound super charged 500 plus h.p. chevelle got beaten by a 320 h.p. 1.3 liter RX-7 rotary
|10-19-2012 09:03 PM|
|bigdog7373||I'm done. There's no winning an argument I didn't start or even intend on starting. I simply said that he should highly consider a blower setup to make it more street friendly. I gave up on the OP a while ago since i can't understand anything he's saying.|
|10-19-2012 08:55 PM|
|vinniekq2||Please,show me the math as to how you arrived at 100 octane fuel for that mans engine?What is the mathematical formula that you are using?,,,look at his cam specs|
|10-19-2012 08:25 PM|
|bigdog7373||The new computer controlled engines can run a lot more compression. My audi was 10:1 with 8lbs of boost. Your 10.75:1 is high but not unreasonable. 11.5 is almost a whole point higher and on a carbed motor will require at least 100 octane. That gets expensive very quickly on a daily driven car that sees 50 miles a day.|
|10-19-2012 08:16 PM|
|vinniekq2||bigdog,my car is 10.75:1,and it is tuned for 92 octane pump gas.I can get 92 anywhere and 94 at our chevron stations.look at the Mazda economy car,its 14:1 cr and runs on pump gas.new ford car is 12:1 same with BMWs and other cars. 8:1 is good for a blown car,not N.A.|
|10-19-2012 04:22 PM|
|bigdog7373||If we were talking about race motors or cars that aren't driven daily, then i can understand where you are coming from. But for a daily driver 11.5:1 compression on race fuel is not nearly as convenient as 8:0 compression with a blower running on pump gas.|
|10-19-2012 03:31 PM|
Ill try again bigdog,,,If we (people like myself and probably rice)built an engine with a blower on it,then it would still have a big cam and big heads,just lower compression and making 1,000 horse power.
Believe it or not,my car is decent to drive on the streets.I have 1 electric fan that comes on at 185 degrees,no water pump fan.Its a standard so stop and go is a pain because of clutch pressure,but it is fine at 35 mph in 3rd gear and lopes along at 65 mph in fifth gear around 2200 rpm.It accelerates smoothly and quickly from that rpm. You save zero money using a blower because ,,,If you blue print an engine and use good parts,the cost of a 400 hp engine and 500 engine are about the same.10k will build a solid roller engine with great parts.If you put a blower on a 4,000 dollar engine and raise the boost past 5 or 10 pounds you will have some broken parts.If you build a decent $4,000 engine add 3k in new blower and related parts you will have a 500 - 600 horse power engine that will look faster than mine,but wont be.Yes,you saved 3k and look cool
|10-19-2012 01:58 PM|
|bigdog7373||I don't think you got what i was saying. If you want the engine in a daily driver, a supercharger will allow you to have the same power but better street manners. I really don't care what anyone's car looks like under the hood. Hell my looks terrible under the hood. It's not cheating or being lazy or anything like that to have forced induction either. But when you are trying to make as much power as you are, and you will be street driving it, then running low compression and a blower is a lot more street friendly than sky high compression and a giant cam. Plus the extra cost of the blower will be paid off extremely quickly since you can run it on pump gas instead of race fuel.|
|10-19-2012 01:25 PM|
|idontdrivericeieatit||And I also am like vinniek2q I like for people look under hood and not worry till its to late and all they see is tail lights gettin smaller cant tell u how many suoercharged and turbo ive taken there money cause people think just because u have turbo or supercharger u the fastest thing on the road in most chases thats not true most of them im out couple cars before it starts to really spool up and make real power running eight mile by then its to late and like I said I really dont like that sound I would much rather hear my motor and not a whine got enough whining from old lady and kids just like get in and let the rumble of the motor make my day better|
|10-19-2012 01:06 PM|
|idontdrivericeieatit||Easy horsepower is like a easy woman fun for a little while but nothing u bring home to mom years ago before I knew what I was doing I had twin turbo 383 cause everybody else had some form of forced induction some turbo some supercharger most love them I dont like the wine of the turbo that noise just bugged me most get off on it I dont. My happiest day was when I built another motor and sold that one Never had one since it might cost a little more build real horse power but thats how I like it and I run a spool because got tired of breaking limted slip units and got tired of replacing parts in them I have yet to break a spool and no matter what its going hook both tires ever time I like knowing what its going do mine does have small amount of hop to it if u in a parking lot turning sharp but other than that I never know its there|
|10-19-2012 01:04 PM|
bigdog,I think I can answer that question.
Look under the hood of our cars and you see a small block,with aluminum intake and heads,same as everyone else.You expect the guy with 2x4 blown bb to destroy the guy with stockish looking car.My car appears stock except it has a 4 inch cowl hood.
Two possibilities,I drive away from him because he has a show but no go car or he broils his tires and I drive away from him. Worst case scenario,its a draw because we both have more power than traction,which is still a win for me in reality,because his car looks faster.
The only real way to decide whos faster is the race track.On my race track he has zero chance,on his drag strip Im only at a slight disadvantage.
|10-19-2012 12:28 PM|
Just cause you've never used forced induction before, or you think you don't like it, doesn't mean you just eliminate it as an option. I'm telling you to seriously look into it because it will really help your build out and get you to reach your power goals a lot easier while still improving drivability. There is no down side to it. It's not forcing your engine to do anything lol, and no damaging it either.
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