Help figuring out nitrous

I just traded for a 97 cobra with 521 crate motor with 10-1 compression thru a c4. It has a nitrous set up and according to previously owner never used. Can I please get help making sure all is safe and well before spraying? I can take pics or answer any questions. I'm pretty new to nitrous but willing to learn. It seems to all be there. Car has 1050 Dom carb.

You will need to give a lot more information before anyone can help you. The make and type of system, jet sizes, fuel system and line sizes, type of fuel (octane rating) total timing of engine should get you started.

I didn't get any information on nitrous. I can give part nos on selenoids? It's a plate under carb with nozzles front and back, has msd start and step box , as far as I know stock timing from ford as it was a crate motor

Has purge that works well

Not knowing much about the combo most will take a 150 hit so keep it around there and it will be ok... now if you had more info about the combo we could better help in a amount usable but a stock motor will take 150 so just base it from that....good luck and have fun

6jeff6 wrote:I didn't get any information on nitrous. I can give part nos on selenoids? It's a plate under carb with nozzles front and back, has msd start and step box , as far as I know stock timing from ford as it was a crate motor

I would get someone local who knows about nitrous to help guide you, before you make an expensive mistake.

where are you located?

^^^^^^^ I agree with the advice above, but if you are set on doing it on your own, get up on the tune of your engine, learn what it likes, and what it doesn't. Find your best performing baseline and have something to go back to that is consistent. N20 is not a magic wand for more power and faster ET's, it is a way to introduce more O2 into a well tuned engine, with tuning modifications to make it perform properly. Those who do this regularly like the above ^^^^ can help you understand, and tune both, but as a caution for going on your own...an ill tuned engine should take 150 but a properly tuned engine doesn't take it ...it gives. JMO

He is also on the edge of what pump gas may be capable of at 10/1 compression.

Pump gas and nitrous never belong in the same sentence.

I'm from ladysmith wi. Spoke with shop who built most of car and the nitrous kit was what he called not the best he's seen or done and recommended better selenoids and it's own fuel system to do it right. I did put on about 90 miles tonight lots of thumbs up and my kids absolutely enjoy the smokey burnouts and blasts from the big block. Maybe I should just run all motor and set a baseline this year and save up money to spray next year and do it right? I'm open to any ideas and appreciate any help. Car did run a little hot on way back but we did leave some tire in a few spots lol

I can give total breakdown of what info I have if you guys want. But motor is a roush/Yates 521 with scj heads and not street friendly cam(says on paperwork lol).

Sure why not.

whatbumper wrote:Pump gas and nitrous never belong in the same sentence.

Hey that ain't fair.... I pump mine right out of the 55gal drum I call it pump gas


Yes please do give what info you have the more the better

And I run a 150 shot n 8/1 with 93 octane.

more than one way to get there.

He's got a $6-$8K engine might as well do it right and play it safe, not that you should'nt on any engine.

No this motor is done right and ready for big spray.

How do you share a picture here? I took a picture of general breakdown of motor . She's all forged though

Best I can come up with this early

://forums.corral.net/forums/attachment.php?attachmentid=553482&d=1441363775&stc=1&thumb=1

6jeff6 wrote:No this motor is done right and ready for big spray.

I was not talking about the engine not being built right for Nitrous, more about the supporting fuel system, fuel, and timing. Do you know what your piston ring gaps are set at? Big Spray to me is 250HP and up, it may mean different things to other people though. You will have to set up a Photo Bucket account, and link to it to do much with pictures.

250 is just getting started IMO.... big hit is 500+ not only is ring gap part of it but ring land depth smooth chambers all edges rounded alot goes into it for alot of nitrous. I have sprayed 275 on stock bbf and 300 on stock sbf you better know the game when your playing like that. A bad tune will kill the best motor with the best parts.

That's why I'm here asking the right people. I will have to call roush Yates and get more specifics on the build. Just let me know what you guys want.
Thanks

Well nitrous on hold c4 is leaking bad middle front and I'm assuming it's the pump seal I keep reading about. With kooks headers I'm sure this won't be fun