you obviously can't read.

 

I agree totally a thinner head gasket would probably not increase compression all too much however the first post talked about raising it to around 12:1... That would for sure invovle an entire rebuild of the engine... Your stock valves would look like tulips

 

We do it to bikes all the time.

 

shaving the head is the only way ull get that high of compression unless u do pistons. a gasket will only net u like .2:1 if that

 

Yeah I can, I read about your upgraded internals. Either way 100shot of spray on a 4cyl is not a piece of cake, no matter what the internals. And if you think that it's such a piece of cake you're likely to have an engine in pieces.

 

rofl ur an idiot. i know at least 2 ppl runnin 125 shots on there four cylinders with just forged internals.

 

I don't see how you figure that, I've seen numerous cars on forged internals run 100-125 shot on forged internals. Hell alot of em are Saturns (http://www.turbosaturns.net)

I find it very difficult to believe that an engine that can take a 75shot all day on stock internals would have a hard time with a 100shot on forged internals.

 

I'm not saying it can't take it - it can take it, provided the tuning is right and you use a window switch, WOT switch, etc. I was just trying to say that its very easy to blow stuff up with Nitrous for a number of reasons, and treating nitrous like "a piece of cake" will get your stuff blown up. Its not always easy to get the tuning right. Understand what I mean now? I never said the parts couldn't handle it but I don't care if your internals are forged or whatever, if the fuel solenoid gets clogged/wire falls off/doesn't open for whatever reason, the internals aren't going to help the holes that melt into the tops of the pistons.

Not trying to bash you here but I've seen a bunch of destruction of nitrous motors in my day and that stuff shouldn't be taken lightly no matter what you put it on (especially when you're trying to shoot almost 60 percent of the factory rated HP of the engine).

 

u dont tune wet kits rofl

 

lot of stand alone FMU's allow you to control ("tune") nos or meth devices, and some wet kits do have controllers that allow you to change some aspets. Yes, you dont "tune" your 399.99 ebay wet nos kit. good luck with that on your 5000 dollars of internals for 11.5 compression.

anyways...

Anyone have part numbers or urls to vendors for forged 11.5 pistons and thinnner head gaskets?

oh, right, no, because they dont exist. So short of shaving your deck and adding alot of material to the combustion chambers, we'll not know how that 4% increase is power feels.

 

Shaving the heads is the only way to go?? How often do you build motors again? How about just changing the pistons instead of risking a machine shop of screwing up your whole head making you buy a whole new one? Let alone, if you just throw it on without checking, your pistons will hit your valves, and then you have a total engine rebuild on your hands.

And since you're not paying attention, I already said .2mm thinner gaskets adds .25 of a point to comp. It's a common quick mod on motorcycles! Hell, you can get on Kawasaki's website, and buy thin head gaskets straight from them, it's that common! Maybe not on a Cobalt, because trying to mod a 145hp motor this side of something drastic as a turbo is pretty much for bragging rights, not to make it "perform."

 

the only way nitrous is gonna blow something up is from improper use. every now and then there might be a freak accident where a silenoid gets stuck but the majority of nitrous problems are from user error.

I say its cake because nitrous is a safe method of power, the only reason it has a bad rep is because its improperly used. Now if you were taking the time to build your engine surely you would have all the necessary items that you need.

I've done plenty of research on nitrous and have read many many posts on nitrous, I am confident in its safe use and will soon be running a 75 shot on my own car. Its no worse than turbocharging or supercharging in my eye so if you think nitrous is risky well then I'm willing to take that risk.

But I know my engine will perform quite solid...

:edit: also I forgot to mention that if your fuel silenoid gets stuck it really doesn't matter what shot you are running

 

You're right - its usually due to improper use or a freak accident......like getting just a little too happy with the nitrous jet and running it too lean......but that stuff happens far too often, especially if proper care isn't taken. When you say "a piece of cake" it sounds like you're not putting the proper care into it. But you sound like you've done your homework, so good luck with it.

However, I do believe that a 75 HP shot of nitrous is worse for a motor then a super or turbocharger that adds 75 hp. When the nitrous kicks in that is a +75hp strain on the bottom end, whereas a turbo or supercharger doesn't have that instant shock to the components. Also, turbo motors don't seem to break rods as much.

 

You don't?? They don't have nozzles? I think you're mistaken there buddy "rofl" as you would say. I've been around enough nitrous cars (albeit, most of the stuff I've worked with are fast drag race cars, not 4 cyls adding a 75 shot) to know that there are always tuning issues.

 

puttin in the proper size jets is way differnt then buyin hp tuners and a wide band o2

 

Agreed,t and I'm sure you've done your homework Ion, but just because I give my motor enough fuel to compensate for a 400shot on a stock motor doesn't mean it's going to work. And yer right, improper use of NOS gives it a bad name.