Ok im buying a gt28rs
#82
10-23-2007, 11:29 PM
RE: Ok im buying a gt28rs
ORIGINAL: sean1.8t
for the 500hp melting a piston, yes, i have not seen it on a healthy engine(seen plenty burn up running lean, but at all power levels). im just going off of what is recomended by previous BIG hp 1.8t makers. and the manufactures
How can you say the pistons are at fault when the tune is lean? Thats not a power problem, thats a heat problem. You might aswell just shoot the EGT'S skyrocketing and blame thepistons also.
andtorque breaks driveline parts (axles/transmissions/shifterlinkage/etc..) Right, but thats not the dicussion.
high hp + high reving + heat = broken rod Again, TQ, low end in fact, BREAKS RODS!! Thats why people with a gt2871r .64 are FAR more at risk to snap a rod than those running a .86. Low tq and a smooth transition to TQ makes it easier on the rods, no matter the HP. Thats what makes a gt2871r .86 and a t3t4 50trim .63 such great turbos for stock rods. You can make 350whp+ and still be on stock rods. There is a person with a 2000 TT making just under 400whp on stock 20mm wrist pin rods on a gt2871r .86
there is more stress on a rod with a motor spinning at 7000rpms making 200whp than there is on a rod when the motor is spinning at 4000rpms making 500wtq..
You are high, arent you? You are more likely to spin a rod bearing at 7k, but not break a rod
i forget the math, but every x amount of rpms you rise, the stress on the rods increses 10 fold. i'll see if i can look it up Do what you like, your still wrong
for the 500hp melting a piston, yes, i have not seen it on a healthy engine(seen plenty burn up running lean, but at all power levels). im just going off of what is recomended by previous BIG hp 1.8t makers. and the manufactures
How can you say the pistons are at fault when the tune is lean? Thats not a power problem, thats a heat problem. You might aswell just shoot the EGT'S skyrocketing and blame thepistons also.
andtorque breaks driveline parts (axles/transmissions/shifterlinkage/etc..) Right, but thats not the dicussion.
high hp + high reving + heat = broken rod Again, TQ, low end in fact, BREAKS RODS!! Thats why people with a gt2871r .64 are FAR more at risk to snap a rod than those running a .86. Low tq and a smooth transition to TQ makes it easier on the rods, no matter the HP. Thats what makes a gt2871r .86 and a t3t4 50trim .63 such great turbos for stock rods. You can make 350whp+ and still be on stock rods. There is a person with a 2000 TT making just under 400whp on stock 20mm wrist pin rods on a gt2871r .86
there is more stress on a rod with a motor spinning at 7000rpms making 200whp than there is on a rod when the motor is spinning at 4000rpms making 500wtq..
You are high, arent you? You are more likely to spin a rod bearing at 7k, but not break a rod
i forget the math, but every x amount of rpms you rise, the stress on the rods increses 10 fold. i'll see if i can look it up Do what you like, your still wrong
#84
10-23-2007, 11:44 PM
#88
10-24-2007, 01:21 AM
RE: Ok im buying a gt28rs
[quote]ORIGINAL: cincyTT
umm...there are definitely forged rods
ORIGINAL: sean1.8t
^actually no, the AEB's internals are not forged. that was speculation for a long time.
No rods are forged, just pistons.
^actually no, the AEB's internals are not forged. that was speculation for a long time.
No rods are forged, just pistons.
#89
10-24-2007, 02:02 AM
RE: Ok im buying a gt28rs
cincyTT, shut up. you always seem to think you know everything.
the torsional load from the back and forth motion of a engine spinning at 7000rpm is tons(weight) in difference than a similar engine at 4000rpm.
RPM kills motors most of the time, not power. you blow a motor at low rpm due to bad tuning.
spinning a bearing or throwing a rod is fault of inconsistant oiling to the bearing. OR an obsurd amount of knock in which the force of the knock caused the bearing to have metal to metal contact.
or...a spun bearing can happen from over rev in which any number of things could have been the cause.
the torsional load from the back and forth motion of a engine spinning at 7000rpm is tons(weight) in difference than a similar engine at 4000rpm.
RPM kills motors most of the time, not power. you blow a motor at low rpm due to bad tuning.
spinning a bearing or throwing a rod is fault of inconsistant oiling to the bearing. OR an obsurd amount of knock in which the force of the knock caused the bearing to have metal to metal contact.
or...a spun bearing can happen from over rev in which any number of things could have been the cause.