<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridvteceg &raquo;</TD></TR><TR><TD CLASS="quote">
i wish girls would ask me to go on dates with them just to discuss all-motor theory </TD></TR></TABLE> lol if a girl as me out and disguss about car i would be all over her

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hbgsr &raquo;</TD></TR><TR><TD CLASS="quote">Run a wet kit. Get some Rods and flat top pistons (nitrous does not like dome's) if you want to raise the comp. shave the head. I would never do that to my car but I know it works, just risky. Personally if you want more power just get a bigger jet. The header and exaust play a huge role but if all your running is a 50 shot there really is no need for any of that.</TD></TR></TABLE>

Why would nitrous not like domed pistons, but like a shaved head? Assuming the compression was the same between the two, there would be no difference to nitrous. In fact the domed pistons are the better way to raise compression. With a milled head you are changing the distance between the crank pully and cam pulley and changing your timing. Plus domed pistons are designed with bigger valve reliefs than most flat top pistons. Therefore when you mill the head to raise compression you are closing up your piston to valve clearance and not compensating with bigger valve reliefs.

 

Well put, I was just wondering why he said that myself. Like i said, i need to talk to you.

 

The only problem with a domed piston is the extra turbulence it creates in the combustion chamber, which can make it more prone to detonation. It also sends most of the force of compression to the sides of your pistons and really hits your rings and ringlins hard. This isn't really a big deal on a NA car but a "nitrous" car is going to most likely see alot higher cylinder pressures. You could always get a piston made with thicker rings and move the ring pack a little to combat this. But I wouldn't worry to much about a domed piston unless your talking about a pretty big shot.

Jeffrey

 

Well the shot shouldnt go any higher than 100. My stock compression is 9:9.1 and I was thinking about stepping it up to 10:1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b18b1ls1 &raquo;</TD></TR><TR><TD CLASS="quote"> It also sends most of the force of compression to the sides of your pistons and really hits your rings and ringlins hard. This isn't really a big deal on a NA car but a "nitrous" car is going to most likely see alot higher cylinder pressures. </TD></TR></TABLE>

That's why you use bigger ring gaps for a nitrous application.

 

Would a blockguard help out as well in this situation...

 

A blockguard won't help your pistons and rings, it will help support the sleeves.

 

Yeah, i know that but someone was saying that it would put pressure on the cylinders which led me to think that maybe a blockguard would help.

 

Alright....I am posing another problem with my setup. If you dont already know, the 7th gen civic has a D17a2. Now, the intake manifold is plastic. I have searched left and right on the 7th gen civic website to see if anyone has sprayed over a 75shot and I came across one or two people who have done so with a 100 shot. One of the guys manifold cracked on one time of spray. And I have only heard that the other guy did the same but am not sure. I am clueless on what I should do now if this is whats going to happen. I do have an auto which I dont have to worry about miss shifting and creating back pressure. I dont know...someone have any input?

 

they make a replacement manifold that is not plastic. i believe there are a few guys on the 7th gen civic site that have it- been a long time since i've visited though. i ran a NX 75 shot for well over a year in my 01 civic. not once did i ever experience any problems. all i had were bolt-ons too. ****, we jetted it at 100 shot a few times too. i just think the guy who blew his IM was a tool. i think he sprayed it off the line.

 

Well...I have an auto and I wont spray until the top of 1st or maybe even until 2nd so I dont know. As for as backpressure, I dont know how it would affect me because its an auto and I will use the proper fuel/nitrous ratio and tune to 12:1 with a wideband.