AFC kit, light spring or heavy?

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Well, after much procrastion I ordered the #5 TST plate ($50. after returning the old #8) and AFC spring kit. Installed the plate today and decided to try the stronger of the two springs in an effort to control smoke.

After a test drive a moment ago I now know that I made a mistake, while the truck pulles stronger once boost is up, it takes what seems like forever to start building boost and making power. But on the plus side there is very little smoke and a noticable increase in power according to the old Seatometer.

Guess I'll try the light spring tonight.

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"95" 3500, 4WHD, Ext cab. SLT, 5 spd, 4. 10 LSD, Rancho 9000's PacBrake, running boards, Mopar mud flaps, Isspro EGT, 50lb. boost, TST #8, 215HP injectors,no cat, muff or turbo ring.

 

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Try the light spring with 10-20 clicks to start with, for some smoke control.

 

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Joe I didn't even know you new how to spell smoke control. he he

 

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I wasn't able to get ANY smoke control using the light spring. I have the med. spring which gives a real good compromise on my engine. Best control for smoke is stack exhaust. Blow it up high and it will not be as offensive. Look at the big rigs, some of them are blowing a lot of smoke.

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1996 3500 Clubcab SLT, auto, 4. 10 limited-slip, TST #5, 370s, AFC spring kit, Psychotty, Dunrite converter, Trans-Go, DiPricol EGT, boost & trans temp. gauges, 9 ft. aluminum flatbed and tool boxes with Venco dump. Custom front bumper, Hadley air horn, PowerVision mirrors & 4" Stack Exhaust.

 

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I am also running the medium spring and can adjust it to the no smoke but generally run it 10 clicks richer which give me a puff just before boost come in.

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EAT'M UP
97 2500 Club 4X4 3. 54, Forrest Green/Driftwood, LSD 5 speed, & Psychotty Air System, TST #11, 370 HP injectors, timing at 16 deg. , 16CM2 housing, AFC spring kit, Geno's Exhaust Blanket, TST EGT gauge & 0-60 boost gauge in A Pillar, Cat-be-gone, 4" Dynomax Bullet muffler, Crome 4" turn down, Rad fan removed, AmsOil Through out, Geno's trans filter kit, AmsOil Bypass system, Lund Winter front, Leer Cab Level Shell Driftwood , 255/85R16, Dyno'd 342 HP pre injectors & turbo housing *NRA/USPSA member and proud of it*

 

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OK, OK, bombaholics, quit confusing the fledgling bomber #ad

With injectors up to 215s and the 160, 175, or 180 hp pump, the light spring is usually best.
With 370 injectors the medium spring is usually best.
With 215 hp pumps, the medium spring is usually best.

 

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FLEDGLING BOMBER!!!! I'LL HAVE YOU YOUNG WHIPPERSNAPPERS KNOW I WAS THRASHING 427 VETTES AND POWER IMPAIRED STANGS WHEN YOU WERE POOPING GREEN. AND ANOTHER THING... #ad


Joe is correct, just as the instructions with the AFC kit suggests, the light spring is better for the 175hp engines, at least in my case with 215 injectors.

After changing the spring out and adding about 20 clicks of preload, fuel/boost comes up much quicker. Smoke is about the same as with the old #8 plate and stock spring.

Thanks, Ronnie




[This message has been edited by moparguy (edited 02-01-2001). ]