XER lobes
Thread Starter
Racer
Joined: Feb 2005
Posts: 436
Likes: 1
From: Gatineau Quebec
XER lobes
What are the advantages of these lobs an a cam....being agressive do they ad the equivalent of more lift & duration... the negative side they are apperently hard on springs, why ?
Thread Starter
Racer
Joined: Feb 2005
Posts: 436
Likes: 1
From: Gatineau Quebec
I did a few more search this what I found for those interested.
They are hard on springs but they will last for more then 30k miles , " depending on use " should install PAC springs whom are apperently superior quality.
The more agressive lobe design the quicker the valves opens the more air/fuel the engine can take in and the more power it will make
Lobe design... from mild to most agressive... XE, XE R, XFI , LSK.
They are hard on springs but they will last for more then 30k miles , " depending on use " should install PAC springs whom are apperently superior quality.
The more agressive lobe design the quicker the valves opens the more air/fuel the engine can take in and the more power it will make
Lobe design... from mild to most agressive... XE, XE R, XFI , LSK.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Best way to see what it does is compare the numbers at 0.050" lift and 0.006" lift (valve close/open duration). You will see with slow ramps that even though the 0.050" numbers between two cams may be the same a slower ramp will close the intake later due to slower ramps and you bleed off cylinder pressure as a result.
Le Mans Master
Joined: Oct 2005
Posts: 7,083
Likes: 1,829
From: Metro Detroit Michigan
Maybe, but it won't keep it from hitting the piston at above mid-range rpm, maybe breaking the head off, with the usual carnage.
