turbo or increase in displacement&compression

[g5raprentice]

which would be the better investment-getting a turbo or increasing the displacement and running a higher compression ratio? i've been wanting a turbo for a long time but recently ive been interested in stroking my gsr to a 2.0 and running higher compression. i wouldnt mind having a turbo and stroking it with lower compression pistons, but how much would that cost? just wonderin....

[Niño]

Forged pistons usually cost $300-500 for a set on a 4-cylinder engine.

How about turbo and boring out the block and fitting it with oversize pistons?

[JohnJohn152]

Originally posted by g5raprentice
which would be the better investment-getting a turbo or increasing the displacement and running a higher compression ratio? i've been wanting a turbo for a long time but recently ive been interested in stroking my gsr to a 2.0 and running higher compression. i wouldnt mind having a turbo and stroking it with lower compression pistons, but how much would that cost? just wonderin....

I have no idea how much any of that would cost, but.. ALL MOTOR ALL THE WAY!!!

[SiN-6]

BECAREFUL on increasing compression ratio..
with 93 octane(which i assume most of ur using)..u will be risking in engine ping over 11.5:1 (and this 11.5:1 is pretty much at the limit..)

[klenboy]

Spoon Motor is the way to go =)

[g5raprentice]

im thinking bout puttin that spoon motor into my bros car when he gets his license and car(92-99 civic hatch)!! another question though....is it a rumor or fact that the b20 block that they use for more displacement is the same block in a crv? just wonderin.....

[klenboy]

Nope, the motor that Spoon uses is the B18C5 stroked to 2.0 liters and pistons with 11.5 compression. It puts out 250 hp (claimed) provided you also use the computer that Spoon has programmed for the engine. It's like $10k with the tranny.

[Mystik]

god damn thats alot of money... i wish i had $10,000 to drop into the engine and tranny in my eclipse.. can you say 9's? heh

[SiN-6]

I know someone is running 12.2:1 compression ratio..heh

yeah all motor is cool..

[klenboy]

How do they keep that motor from pinging? I mean do they use racing fuel on the street or something? 12.0 is hella high for the street isn't it?

[SiN-6]

well i have no idea how he keep away from pinging...

and yes.. after 11.5:1 its hella high for street use...

[jexser]

You can run all the compression in the world as long as you remove timing! I know alot of Mustangs with 12.5 comp ratios, but they have to run like 8 degrees of timing! LOL!

[klenboy]

Originally posted by jexser
You can run all the compression in the world as long as you remove timing! I know alot of Mustangs with 12.5 comp ratios, but they have to run like 8 degrees of timing! LOL!

I had the feeling that he had to retard his timing. 8 degrees sucks. Damn might as well go Pro Stock man: 16.0:1 =) Then again those are for 1300 hp cars that do 7 second passes.

[civicman38]

buy airplane gas.. that shit kicks ass. octane 110 +. Most small airports will sell that too you.

[jexser]

Aviation fuel is meant for use in higher altitudes, so when you use it near sealevel it makes the motor run way too lean. Anyways, you can't run any fuel that has lead! It will ruin O2 sensors in a quick hurry.

[civicman38]

depending on the car. I have seen many cars put airplane gas into their cars at the track. I am not talking about Jet fuel or anything. Just simple small airplane fuel. This is basically what racing fuel is. I would only suggest doing this if you have a very high compression engine.DOME pistons

[jexser]

DO NOT USE THIS IN YOUR ENGINE! IT IS NOT A GOOD THING FOR YOUR ENGINE! DO NOT USE THIS IN YOUR ENGINE!!!!

[civicman38]

This is the Fuel that Pro street dragsters use. I have personally used it. IF you dont know what the fuck you are talking about shut the fuck up!First of all dont fill the whole tank up with it. You put about 1.5 gallons of this and then fill it with 92 octane to water it down.(not water though)

[klenboy]

Well you can always use alcohol fuel like methanol or something but you need special fuel system for that I think. And then there's Nitro Methane =)

[civicman38]

true good call.

[jexser]

Originally posted by civicman38
This is the Fuel that Pro street dragsters use. I have personally used it. IF you dont know what the fuck you are talking about shut the fuck up!First of all dont fill the whole tank up with it. You put about 1.5 gallons of this and then fill it with 92 octane to water it down.(not water though)


Look you little fucking punk, I have been around REAL RACE CARS for a pretty long time. The DO NOT use fucking aviation fuel in ANY class of racing! You are soooo fucking stupid, I don't have the words to describe your mentality! Go to any race track and ask a few racers what the use. Pro-Street cars generally use Sonoco Pro-Stock fuel, it is around 120 octane and it's purple in color. Geez, I wonder how I know this? Oh, It must be that the crew I run with race Pro-Bracket and Real Street classes! Don't come on here and mislead others and give bull shit advice on something you know absolutley dick about, okie asshole?

[klenboy]

Jexser is right. I don't think any motorsport will use aviation fuel. It's true thatPro-Street and Pro-Stock does use 120 octane but I only knew now that they use Sonoco. Pro-Stock cars use 500 cid engines with 16.0:1 compression (give or take 1) and twin 1050 cfm carbs. 1300hp and torque up the ass (3 g's on takeoff). As for Nitro-Methane only 2 types of drag cars use them: NHRA or IHRA Funny car and Dragster. They also use 500 cid engines with I believe between 7.5:1 and 7.0:1 comression. Seems like a low compression number but 7000 hp don't give a fuck. As for IHRA Pro Mod's I'm not really sure what fuel they're using. From the smell of seeing one run (6 second passes) I think they use Methanol or Gasohol or some alcohol based fuel.

[civicman38]

obviously you dont know what you are talking about. I am from a different part of the country. At the local race way in Washinton where i am from They sell Aviation fuel. This fuel IS NOT JET FUEL. It is used in older Airplanes. When you mix this fuel with the pump gas it will make it less concintrated.This is one of the oldest strips in the country that is still used by the airport for emergencies. http://www.bremertonraceway.com/home4.html
email the webmaster at this site and ask what kind of fuel they sell at the track.(that the airport sells) I have seen it with my own eyes. I have no reason to lie about this topic. This is such a stupid topic for anyone to get all fussy about like i ruined your birthday or something. Shit do some research. Cars do run on things other than pump gas (Nitro methane, Propane,) IF the Engine is built right and the Fuel that you use is combustable it will work. Pretty simple if you actually think about it. This thread seems to be going nowhere from here so. Fuckit.

[jexser]

Dude, let it go! You are way wrong on this one!

[SE-Rage]

Originally posted by civicman38
This is the Fuel that Pro street dragsters use. I have personally used it. IF you dont know what the fuck you are talking about shut the fuck up!First of all dont fill the whole tank up with it. You put about 1.5 gallons of this and then fill it with 92 octane to water it down.(not water though)

Okay, you say that Pro Street dragsters use it, and then change it to some people at this raceway because its obvious that they use 120 octane. From my understanding, aviation fuel is highly leaded, and if you've used it personally, I would think it would do damage to your car. Maybe if you actually explained what the fuel was called instead of this general "aviation fuel" people would be able to understand what kind of fuel it is.

Also, all this is besides the point because if you're doing this to get higher octane, you're wasting your money. If you're already using the proper octane for your car, you won't gain anything by using a higher octane fuel. Unless you're running extremely high compression and/or really advanced timing, there's no point. Octane is used to prevent knock, and if you're at 87 octane and the fuel isn't preigniting in the combustion chamber, it's all okay.

[civicman38]

OK for one i did not say that all pro street drag cars use this fuel(I have seen pro street cars use this though) Most cars before 1970 used leaded gas. Maybe this would not be such a good idea on a HONDA. Chevy's or most domestics can use this if it is an old engine with High compression. This is why some people have to go down to the parts store to buy a lead substitute for their older cars. USA no longer sells leaded gas. This is why the airport was selling very high octane gas. So it is unleaded. So if you can put some into your honda buy about 1.5 gallons( not sure) to mix in with your other gas. You will also have to advance your timing to take advantage of this. Sorry for the confusion..