Advice needed racing on sunday!!!

[Bescurred]

Aight heres the deal guys. I got an 86 GN, Just did the spring cleaning. I got 340 fuel pump and accufab FPR on order will be here thursday. This is my mods Atr 3inch Downpipe, 3 Inch exhaust, powerplate, k&N filter, Mag 4 chip ADJ wastegate, and VDO boost guage. I'll be running slicks and some 110 octane race fuel. How much boost you guys think I can turn it up to with stock injectors? I know I really need like some blue tops, but don't have the money before sunday. Oh its got the double roller going in tomorrow. I hate that I can't get injectors yet, and I don't have a scan tool . New O2 sensor though

 

[zam70]

DON'T go racing and turn up your boost yet unless you're a gambling man...

turning up the boost with No scan tool + NO knock gauge = Blown head gasket.

You need a scan tool and knock gauge if you're gonna tune the car & want to turn up the boost.


My advice - don't go over 16lbs until you can monitor your engine.

 

[Jimn8or]

I'll support the 16lb max idea above with the stock injectors. Double the bet and set it up after you have Blue tops or 009's and a matching chip.
Report back,
Jim

 

[Randy Greenoe]

I would not even consider racing without a scan tool {scanmaster} I also would consider when the time has come to go right to the 50# injectors. I ran bluetops for quite a few years and changed up to 50s. Best move I ever made! The car starts better,idles better,and runs much better. The 50s will give you a little more room to evolve also. 50s and a Casper chip was the missing link in my receipe!

 

[TurboJunky]

Well, I wouldn't recommend this but with my 1989 Turbo T/A I had the following mods:
- 3" THDP
- Thrasher 92 chip
- No cat

It came with a factory adjustable wastegate rod and I cranked up the boost to 20lbs. according to the stock gauge. It had 12,000 miles on it at the time so the engine was still relatively new. I ran 110 exclusively and had NO problems. The car was a monster considering the few hundred bucks of mods done to it. The best it ran was a 12.93 @104mph on stock street tires and no tampering with the tire PSI. I drove it home with the A/C on that day.

In your case, I wouldn't worry if you know your car. The ultra high octane fuel is great insurance against knocking. Will it completely prevent it...no, could it....yes. Some on the TTA email list I subscribed to weren't comfortable with my not having a scan tool but other serious racers and a couple others in the petroleum industry weren't concerned with my arrangement as I wasn't.

I wouldn't sweat it.