poiznus the smaller the upper pulley is the less the belt wraps around it. the tensioner will wrap the belt around the upper pulley better. most have belt slip with smaller upper pulley at upper RPMs
poiznus the smaller the upper pulley is the less the belt raps around it. the tensioner will wrap the belt around the upper pulley better. most have belt slip with smaller upper pulley at upper RPMs
ur not at 17 pounds buddy, take it from someone who has a cobra and has a 2.76, smaller then a 2.8 and i make 14.5 and i have steeda 100mm blower belt tensioner, unless you have a snake bite kit secretly on that car no way your at 17
hey i have a 2004 svt cobra and i have a upr off road x pype with borla catback, a race port blower with a 2.76 upper pullie.
and a jlt cold air intake... my car dyno at 463rwh and 464 rwtq... are those good or bad numbers for what i have.... they told me i need a 4 pound lower pullie cause the blower was ported to have a 4 pound and a 2.76 upper?
@poiznus how much did the pulley tensioner cost? cause i installed a 2.8 pulley and i just got a smaller belt and there is no slip now... wat make the tensioner better than simply buying a smaller belt ?
poiznus the smaller the upper pulley is the less the belt wraps around it. the tensioner will wrap the belt around the upper pulley better. most have belt slip with smaller upper pulley at upper RPMs
Bova03termi 1 year ago
poiznus the smaller the upper pulley is the less the belt raps around it. the tensioner will wrap the belt around the upper pulley better. most have belt slip with smaller upper pulley at upper RPMs
Bova03termi 1 year ago
how much extra boost did the port give you?
nben11 1 year ago
can u hit 500 without porting the blower ?
mnurse18 1 year ago
@mnurse18 doubt it you can get really close though
braddfordy 1 year ago
ur not at 17 pounds buddy, take it from someone who has a cobra and has a 2.76, smaller then a 2.8 and i make 14.5 and i have steeda 100mm blower belt tensioner, unless you have a snake bite kit secretly on that car no way your at 17
03SVTLUIS 1 year ago 2
o and its only pushing 12 psi
mgomez475 2 years ago
hey i have a 2004 svt cobra and i have a upr off road x pype with borla catback, a race port blower with a 2.76 upper pullie.
and a jlt cold air intake... my car dyno at 463rwh and 464 rwtq... are those good or bad numbers for what i have.... they told me i need a 4 pound lower pullie cause the blower was ported to have a 4 pound and a 2.76 upper?
mgomez475 2 years ago
bad numbers should been 490's
03SVTLUIS 1 year ago
@03SVTLUIS
well the guy told me that he ported my blower for a 2.76 upper and a 4# lower...
so i'm guessing he made the port a little big...
before he ported he explain to me what pullie combos was i going to run and i told him 4# lower and 2.76 upper..
mgomez475 1 year ago
How much more horsepower did the porting give you?
Abe4racing 2 years ago
How are you at 17 Lbs with just an upper 2.8?
tekademic 2 years ago
@tekademic Ported blower and supporting mods
DODODOK 2 years ago
Swarr Auto in Collegeville, PA
poiznus 2 years ago
UPR tension pulleys made a nice difference?
riostang 3 years ago
yes they do. without it, you loose power since the belt slips on the upper pulley....well worth the money
poiznus 3 years ago
how many pounds u running?
cobra50stroker 3 years ago
17 pounds
poiznus 3 years ago
Where is this filmed at? I have a Torch red 04 I am exited to get my pulley on and tune it. That shop looks like the one here in my town.
Themerritt69 2 years ago
@poiznus how much did the pulley tensioner cost? cause i installed a 2.8 pulley and i just got a smaller belt and there is no slip now... wat make the tensioner better than simply buying a smaller belt ?
cosmo0223 1 year ago
That car is hot as hell
mynameismike65 3 years ago