Nitrous input

[1320rBUST]

Hey guys, I'm looking to spray my Mach by spring, I just ordered some Boss 302 rods, and going to pair them with Termi pistons, and an NX plate..I plan on going no more than 125 shot this season, would I need to change any timing or do any 'MAJOR' tuning for this? Next season if all goes well, I'd like to bump it up to 300, but for now I'd just be sticking with 125. I appreciate yalls help!

[TKat13]

I would assume you would need to tune it since you are also dropping your compression level, I cannot imagine everything running properly without a tune. However, I could be wrong...

I personally would never recommend adding Nitrous without a tune. To much can go wrong. When/if you tune it, I would suggest having the Nitrous tune bump the fuel pressure up to around 60psi to compensate for the fuel pressure drop when the nitrous initially kicks on. I am also assuming you will be running an SCT switch with chip allowing on the fly selection of the Nitrous tune. Also assuming everything else is stock and the Nitrous is a wet kit.

So much I do not know about your setup...

Tune it...

[Explosive]

+1 to the tune, too many things that could bite you in the *** just pony up and get the tune man. Had I said eff it just a 100 shot without a doubt my motor would have been toast after putting it on the dyno

[Mach828]

I wouldn't run termi pistons. Car is going to be a dog off the juice. Will probably feel like a 2v.

I wouldn't even build the motor for a 125 hit. Just spray and pray, but of course get it tuned.

[Explosive]

Once I get the nozzle off mine and the plate on I'm not paying any attention to shot size, I'm going to start low and work my way up to the power level I want, whithin reason of course.

[1320rBUST]

Originally Posted by Mach828

I wouldn't run termi pistons. Car is going to be a dog off the juice. Will probably feel like a 2v.

I wouldn't even build the motor for a 125 hit. Just spray and pray, but of course get it tuned.

Sorry, I'm not too familiar with power adders, why should I not run the Termi pistons? and why would it feel like a 2v? (just asking to learn)

right now, I have an X3 which I un married from my old GT, and wondering if I should pair it to the Mach, I think SCT switch would be the better bet..

[01yellerCobra]

Originally Posted by 1320rBUST

Sorry, I'm not too familiar with power adders, why should I not run the Termi pistons? and why would it feel like a 2v? (just asking to learn)

right now, I have an X3 which I un married from my old GT, and wondering if I should pair it to the Mach, I think SCT switch would be the better bet..

They'll drop the compression too much. About 2 points IIRC what the stock Mach compression is. It's fine with a twin screw which makes up the power. But N/A it'll be a dog.

[1320rBUST]

Originally Posted by 01yellerCobra

They'll drop the compression too much. About 2 points IIRC what the stock Mach compression is. It's fine with a twin screw which makes up the power. But N/A it'll be a dog.

right on, so if termi pistons are no good, what would be good for a once or twice a month track day? its a DD but want to go play every now and again

[DSG2003Mach1]

Originally Posted by 01yellerCobra

They'll drop the compression too much. About 2 points IIRC what the stock Mach compression is. It's fine with a twin screw which makes up the power. But N/A it'll be a dog.

this, its somewhere in the low to mid 8s with those cars.

I really dont know anything about specing pistons and rings for nitrous but I would keep the compression close to stock

[01yellerCobra]

I would imagine any off the shelf piston will be fine. Manley, Diamond, JE, etc. Pick your poison. Like DSG said, I'd keep the compression around stock.

[1320rBUST]

10/4 thanks for he advice yall

[DSG2003Mach1]

I do believe there are recommended Ring materials/combinations and Ring Gap specs for nitrous motors, might be worth looking into depending on how long you plan to go that route

[littlemags]

if anything I would bump compression WAYYY before dropping it.

[Roy]

Originally Posted by littlemags

if anything I would bump compression WAYYY before dropping it.

I would go around 11:1.

[1320rBUST]

so bumping compression wont harm the motor when not spraying (DD'ing)?

[royce04]

As long as you as you don't go crazy high with the comp and have the fuel to support it and good tune, you should be fine. Plus the higher comp will give you more snap when not on the spray.

[Mach828]

Originally Posted by 1320rBUST

so bumping compression wont harm the motor when not spraying (DD'ing)?

The only harm it will do is increase your power and efficiency therefore providing better fuel mileage and a bigger smile when you floor it.

[Lonestar77777]

You know you have the gas set right when the rods fly through the block. LOL

LS