[twooldgoats]

My front cylinders get more air from the blower, so I run bigger fuel nozzles in the front cylinders than the back ones. I fine tune by EGT (have a sensor on every cylinder). I balance the temps by cyinder and that's my final tune. My hat nozzles are all the same, but my port nozzles run bigger in the front, since the opening on the bottom of the blower is offset to the front. It's not a big difference between cylinders, though.


Jim

[GTOGEORGE]

Originally Posted by twooldgoats

My front cylinders get more air from the blower, so I run bigger fuel nozzles in the front cylinders than the back ones. I fine tune by EGT (have a sensor on every cylinder). I balance the temps by cyinder and that's my final tune. My hat nozzles are all the same, but my port nozzles run bigger in the front, since the opening on the bottom of the blower is offset to the front. It's not a big difference between cylinders, though.


Jim

Problem is I don’t have that luxury, I’ll just have to jet the snot out the carbs and hope for the best. I have 210’s in them now......I have jets up to 224’s. This will be fun! PPTTF!


GTO George

[misterp266]

Used to hang out with a Nostalgia nitro F/C when I was at the March Meet that actually ran different pistons front to back to make up for the compression difference. I think they were surprised that I noticed. Lots of tricks to getting all eight making power.
Good luck George!

[GTOGEORGE]

Originally Posted by misterp266

Used to hang out with a Nostalgia nitro F/C when I was at the March Meet that actually ran different pistons front to back to make up for the compression difference. I think they were surprised that I noticed. Lots of tricks to getting all eight making power.
Good luck George!

I love going to the nostalgia races!
All I can hope for is richer up the lean cylinders and hope the rest aren’t too fat, luckily I run low boost.

GTO George b

[johnta1]

Being rich with alcohol is no problem.
Being just a little lean can be very expensive, especially with a blower.

Better to err on it being rich.

[Jack Gifford]

Originally Posted by twooldgoats

... My front cylinders get more air from the blower, so I run bigger fuel nozzles in the front cylinders than the back ones...

My 6-71 blown M/T hemi V8 was especially bad in that respect, since the equally-spaced intake ports caused #7 & #8 to be much further back than a normal Pontiac. I improved the airflow distribution- not a lot, but significantly- by swapping the rotors side-for-side, to tend to "blow" toward the rear instead of the front.

[GTOGEORGE]

Originally Posted by Jack Gifford

My 6-71 blown M/T hemi V8 was especially bad in that respect, since the equally-spaced intake ports caused #7 & #8 to be much further back than a normal Pontiac. I improved the airflow distribution- not a lot, but significantly- by swapping the rotors side-for-side, to tend to "blow" toward the rear instead of the front.

The Blower Shop mentioned that to me.


GTO George