Author Topic: Balancer spec  (Read 6229 times)

Offline ss4

  • Jr. Member
  • **
  • Posts: 98
    • View Profile
  • Your Best Time: 5.42 @ 128 - 1/8th
  • Your Track: Northern Michigan Dragway
  • Your Vehicle: Worm Inc. 180 inch Front Engine Dragster
Balancer spec
« on: February 06, 2014, 08:20:54 AM »
Looking through the NHRA spec and there is a requirement for the balancer to be SFI rated 18.1 mandatory.  So what happens If I don't have a balancer.  since my motor was in a sprint car it is setup with a KSE gear drive and the crank snout drove a water pump.  I am not running pump so I just blocked off the adapter and run it like that.  Will I have a problem with Tech on this.
if you need to Hate target Laziness

Offline ricardo1967

  • Hero Member
  • *****
  • Posts: 570
    • View Profile
  • Your Best Time: No full pass yet.
  • Your Engine: Alky SBC 400
  • Your Track: Brown County Dragway (Bean Blossom, IN)
  • Your Vehicle: 173" FED
Re: Balancer spec
« Reply #1 on: February 07, 2014, 02:59:19 AM »
Good question, I'm all ears for what the pros have to say. My understanding is that the damper spec exists to prevent damper explosion or a runaway damper (or outer ring). Many blown engines don't use damper at all.

Offline ss4

  • Jr. Member
  • **
  • Posts: 98
    • View Profile
  • Your Best Time: 5.42 @ 128 - 1/8th
  • Your Track: Northern Michigan Dragway
  • Your Vehicle: Worm Inc. 180 inch Front Engine Dragster
Re: Balancer spec
« Reply #2 on: February 07, 2014, 06:59:38 AM »
I would expect it just won't apply, but a good friend of mine had to put a battery disconnect on his fed to satisfy the tech guy "because the rules said you had to have one" even though he didn't have a battery on the car.
if you need to Hate target Laziness

dreracecar

  • Guest
Re: Balancer spec
« Reply #3 on: February 07, 2014, 07:54:56 AM »
A "HUB" is not a balencer so SFI spec is not required.  As to the battery discconnect, some of these Tech people are worse than NFL refs

Offline ss4

  • Jr. Member
  • **
  • Posts: 98
    • View Profile
  • Your Best Time: 5.42 @ 128 - 1/8th
  • Your Track: Northern Michigan Dragway
  • Your Vehicle: Worm Inc. 180 inch Front Engine Dragster
Re: Balancer spec
« Reply #4 on: February 07, 2014, 08:04:32 AM »
good point on the balancer, Bruce.  Should I have a mag shut off on the back?
if you need to Hate target Laziness

dreracecar

  • Guest
Re: Balancer spec
« Reply #5 on: February 07, 2014, 09:38:30 AM »
The only time on needs a switch at the back is when there is a battery to "RUN" the car  (starter,fuel pump, igntion) a small mc battery to run the trans break does not need one also.

  I would never put a mag only switch at the back of the car for sombody else to trip instead of the driver. Starter comes over to the driver and motions the driver to shut it down

Offline spitzerscott

  • Full Member
  • ***
  • Posts: 116
    • View Profile
    • Ogg Motorsports
  • Your Best Time: 5.73@118.80
  • Your Engine: 336 Small Block Chevy
  • Your Track: Osceola IN, Top Eliminator runs 1/8 mile
  • Your Vehicle: Spitzer225 RED, Alcohol SBC
  • General Location: Northern Indiana
Re: Balancer spec
« Reply #6 on: February 08, 2014, 02:07:54 PM »
T have a hub on my car. Rule says SFI balancer or solid steel hub.