Recommendation for AFCO 3840f/BNC front shocks

slick5861 · 07-29-2020, 12:50 PM

Call Eric Folger at Afco. I have the same shocks. My car kept bouncing after a wheel stand. Revalving on his recommendation fixed everything. Very knowledgeable. Reasonable pricing on the adjustment.

Hacksaw · 07-29-2020, 04:32 PM

Tighten the compression, stop the bounce.

cad · 07-29-2020, 04:41 PM

Here is a video for reference:
https://drive.google.com/file/d/1wav...ew?usp=sharing

Mike Pearson · 07-29-2020, 06:26 PM

Quote:

Originally Posted by cad

Here is a video for reference:
https://drive.google.com/file/d/1wav...ew?usp=sharing

Watched your video. It’s not the front. The truck spun the tires before the fronts touched. Work on getting the truck to hook and stay hooked. Check your back shocks. Do they have enough extension. I would loosen the front shocks on extension and tighten them on compression. Remove any travel limiters if you have any. What kind of tire and how much air pressure?

cad · 08-06-2020, 10:47 AM

Quote:

Originally Posted by Mike Pearson

Watched your video. It’s not the front. The truck spun the tires before the fronts touched. Work on getting the truck to hook and stay hooked. Check your back shocks. Do they have enough extension. I would loosen the front shocks on extension and tighten them on compression. Remove any travel limiters if you have any. What kind of tire and how much air pressure?

Hi Mike,
The driveshaft graph does show a little hump at about .5. The rear shocks are custom valved by Envy Suspension. They have 5.5" travel and set with 2 inches showing. I tightened up the compression on the front to Zero this past weekend....happened to pit next to Gary Stinnett at our bracket race last weekend, and he said the truck just looked stiff. In addition, we just moved the instant center to 46" out, 7.5" up and bottom bar down 1.9 degrees, and will TNT this weekend. Tires are MT 3074S with 9.5 psi and about 40 runs on them now. Gary said he thinks the tire is bouncing up and maybe even go up to 10.5 psi.

Thanks,
Clark

James Perrone · 08-06-2020, 12:27 PM

Santhuff

Hacksaw · 08-06-2020, 12:56 PM

Don't buy anything, yet. With 1.40 60's I can't see you having HP/spin issues. Think you need to spend more time on the back end. Also don't care for the stiff sidewall slick.

07-29-2020, 12:50 PM	#1
slick5861 Junior Member Join Date: Sep 2008 Location: East St Paul,Manitoba Canada Posts: 23 Likes: 14 Liked 2 Times in 2 Posts	Re: Recommendation for AFCO 3840f/BNC front shocks Call Eric Folger at Afco. I have the same shocks. My car kept bouncing after a wheel stand. Revalving on his recommendation fixed everything. Very knowledgeable. Reasonable pricing on the adjustment.

07-29-2020, 04:32 PM	#2
Hacksaw Senior Member Join Date: Sep 2016 Posts: 882 Likes: 206 Liked 310 Times in 174 Posts	Re: Recommendation for AFCO 3840f/BNC front shocks Tighten the compression, stop the bounce.

07-29-2020, 04:41 PM	#3
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 702 Likes: 202 Liked 91 Times in 51 Posts	Re: Recommendation for AFCO 3840f/BNC front shocks Here is a video for reference: https://drive.google.com/file/d/1wav...ew?usp=sharing

08-06-2020, 12:27 PM	#6
James Perrone VIP Member Join Date: Feb 2004 Location: LONG ISLAND N.Y. Posts: 1,676 Likes: 3,380 Liked 1,820 Times in 425 Posts	Re: Recommendation for AFCO 3840f/BNC front shocks Santhuff __________________ james perrone 1290 STK

08-06-2020, 12:56 PM	#7
Hacksaw Senior Member Join Date: Sep 2016 Posts: 882 Likes: 206 Liked 310 Times in 174 Posts	Re: Recommendation for AFCO 3840f/BNC front shocks Don't buy anything, yet. With 1.40 60's I can't see you having HP/spin issues. Think you need to spend more time on the back end. Also don't care for the stiff sidewall slick.