I have a 8.5:1 forged 346 setup for a turbo but I am thinking about making a switch to a big direct port nitrous setup. My question is can I spray a big shot on it? like 200-250? I can change the 72cc heads pretty easily and raise the compression some but obviously its not going to be a high compression motor that you normally would see with nitrous.

So what will be the drawbacks? I am ok with it being sort of a dog off the nitrous, I just want something good for the track. My main question is what does the low compression do to it


its diamond dish pistons, callies rods, arp main and head studs, stock crank

 

nobody?

 

id like to know as well???

about in the same boat haha

 

Basically power consist of 3 variables; timing, compression, and boost. You lower compression for a boosted car to maximize efficiency, due to the increased inlet pressure (thus you can run higher boost). For nitrous, this is justified with timing ( keep in mind you can only adjust timing so much). Since nitrous does not need all that pressure to shove oxygen into your intake/cylinder....people usually run higher compression motors. For example, look at a NHRA Nitrous car. They run roughly 17:1 compression with a 1000hp shot of nitrous. Go with boost!

 

so basically the forged parts will still hold up to the big shot it just won't make as much power as a regular nitrous setup but would still be pretty good? i know its not ideal i just can't build a whole other motor right now

 

Just remember never to run lean.......When you think your fuel pump will suffice, buy another! I'm really not sure about your budjet, but I think that forced induction is the way to go in your case (then again, I work at a turbo manufacturer)

 

There's no reason you cant do this. You obviously understand that you would make more power with higher compression. But it would be fine to spray it with at least a 250 shot.

We do custom direct ports if you are interested