mysterious groove in manifold boosts performance?
Posted January 14, 2002 - 08:29 PM
They researched and spoke with dirt track and stock car guys for tips on restrictor plates and found that the airflow and turbulence factor is critical . They were told that cutting a small groove on intake mainfold side of restrictor can produce a tiny vortex effect to breathe better. The trick is to make the groove the right width and depth. Then they added a custom W Bros. exhaust. The CRF put out 51 HP... 3 more than the unrestricted CRF.
The bike was said to "hang with a KTM520 in every way." It placed #5 in its debut race.
Anyone with dirttrack experience want to comment? Anyone want to try it out, and report back?
Hey... I'll pitch in 5 bucks. If it dont work, fill the groove back in with JB Weld.
Posted January 14, 2002 - 09:05 PM
Rumors are like *******s, everyone has one. May be true, but I really believe that the articles are there to sell articles.
Buyer be ware. If it seems to good to be true, it probably is.
If it works, I'll do it in a heart beat.
Not dogging you, I'm just thinking...
Posted January 14, 2002 - 09:20 PM