squaring jets - Page 3

RayRayJones · 10-12-2009, 08:02 PM

lol

**FLAGMANBILL** · 10-22-2009, 12:21 PM

also if you do a search on yellowbullet.com for a 82 square jet tune up there's pages of people who've done it and can recommend timing/ psi ect. if all else fails ask in the nitrous forum. there's no better amount of knowledge then the bullet. all your tech questions can be answeared there.

**igotaneed4speed** · 10-22-2009, 12:45 PM

In a pinch when you dont have a flow meter I've shut to bottle off and made sure it was off.. fired the car up held it at 2500-3k then sprayed it thru the jet and plate into the motor and adjusted fuel pressure that way. It works but make sure you get it good and warm and clean the fucker out after cuz it'll get all loaded up.

**cjmatt** · 10-22-2009, 01:49 PM

Quote:

Originally Posted by igotaneed4speed

In a pinch when you dont have a flow meter I've shut to bottle off and made sure it was off.. fired the car up held it at 2500-3k then sprayed it thru the jet and plate into the motor and adjusted fuel pressure that way. It works but make sure you get it good and warm and clean the fucker out after cuz it'll get all loaded up.

why not just spray it removed from the plate at the ground or something and adjust it that way

**allthrottle** · 10-22-2009, 03:06 PM

When you order a N20 kit, the intructions for jetting are just "recommendations".... Start safe and read the plugs from there. If you have to big of a fuel jet you're letting unburnt"raw" fuel sit on top of the piston and you'll pop a head gasket or worse everytime. Like JQUICK said, read it by the plug and make sure you use 2 regs. I have my N20 set at 5.5 psi and my engine set at 6.5 psi.... 1/4 will make a huge difference on the N20 side of things! Being to rich can be just as dangerous as being to lean!!! Start with putting a MLS or cometic head gaskit on the engine!! Second, pray for forgiveness on wrongful decisions!!!!! LMAO

**igotaneed4speed** · 10-23-2009, 01:56 PM

Quote:

Originally Posted by cjmatt

why not just spray it removed from the plate at the ground or something and adjust it that way

What are you gunna use for a jet holder then? Reason I would do it that way is then your fuel pressure will be exactly the same when the kits flowing as to when your setting it. If you have a jet holder to build a flow gauge then obviously you would do that instead.

**Pure84GTT** · 10-29-2009, 12:31 AM

some good info in this thread

Billydroveit · 11-05-2009, 02:01 PM

Quote:

Originally Posted by johnquick302

the instuctions in the nos kit make it like a 8-10 jet spread or so on the plate wtih a bigger fuel jet than nitrous jet. when you square them you are running a 93/93 jets. instead of a 82/91 or so like they recommend. its usually too fat if you dont square them. but every combo is diff, what works for some dont work for others.

Very true. I did nothing but an intake change on mine, went from a squared jetting to now having the fuel jet up 5. When i was tuning with the old intake i baught an assortment of jets and a couple sets of plugs. I would run it, check hte plug and step down 2 or 3 jet sizes untill i hit square, and then adjusted the fuel pressure. The price of a few jets is much cheaper than head gaskets and pistons.

I never thought a simple intake change would make such a huge difference. I got lucky and didn't hurt anything running lean, but it was a lesson learned...anytime you change ANYTHING start from scratch.