Which cam?
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From: nc
Which cam?
Bike is 2014 Flhtk twin cooled 103 engine with stage1AC, street port heads with 82cc chambers, .030 head gasket pistons down in bore .008, power vision tuner with target tune with wide band sensors, fuel moto head pipe no converter and super trap disc mufflers.I am trying to decide which cam to use either Andrews 54h, T-man torqster or a Cyclerama 570 as I have all three,all responses appreciated
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Bike is 2014 Flhtk twin cooled 103 engine with stage1AC, street port heads with 82cc chambers, .030 head gasket pistons down in bore .008, power vision tuner with target tune with wide band sensors, fuel moto head pipe no converter and super trap disc mufflers.I am trying to decide which cam to use either Andrews 54h, T-man torqster or a Cyclerama 570 as I have all three,all responses appreciated
Last edited by djl; Jul 25, 2023 at 02:55 PM.
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From: Dubuque, IA
I'm too lazy to do the math right now on what your compression is with 82cc chambers in a 103 but the 3 cams you listed vary greatly from 32° IVC for the 570-2 to 37° IVC for the Tman 555 to 42° IVC for the 54H.
OK. Ran the numbers. A 37° IVC would put your ccp around 201psi and a 32° IVC around 207psi and a 42° IVC around 195psi. All doable but with a good tune.
I like my Tman 590PS2. So ill throw the Tman 580PS with an IVC of 39° ..580 lift and a ccp of 200psi in as my vote.
OK. Ran the numbers. A 37° IVC would put your ccp around 201psi and a 32° IVC around 207psi and a 42° IVC around 195psi. All doable but with a good tune.
I like my Tman 590PS2. So ill throw the Tman 580PS with an IVC of 39° ..580 lift and a ccp of 200psi in as my vote.
Last edited by 60Gunner; Jul 25, 2023 at 06:17 PM.
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Bike is 2014 Flhtk twin cooled 103 engine with stage1AC, street port heads with 82cc chambers, .030 head gasket pistons down in bore .008, power vision tuner with target tune with wide band sensors, fuel moto head pipe no converter and super trap disc mufflers.I am trying to decide which cam to use either Andrews 54h, T-man torqster or a Cyclerama 570 as I have all three,all responses appreciated
All three can be tuned successfully, but the slightly lower compression will allow poorer quality fuel, and a cooler running motor. If performance is your goal, and not cruising, then use the CR 570.
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From: san antonio
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Not to start a compression debate but I run the CR595 at 10.2 corrected with no issues. I used to think that 9.6 corrected was pushing the envelope but not these days. Many are running much higher compression without issues. I am prettey sure that the CR 570, with a good tune, will out perform the Andrews 54 and the TMan "torkster" 555 but that's JMHO.
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From: Dubuque, IA
Not to start a compression debate but I run the CR595 at 10.2 corrected with no issues. I used to think that 9.6 corrected was pushing the envelope but not these days. Many are running much higher compression without issues. I am prettey sure that the CR 570, with a good tune, will out perform the Andrews 54 and the TMan "torkster" 555 but that's JMHO.
Not the same head work but there was some. Its not a hp cam.
https://www.roadglide.org/threads/20...040-hg.374341/
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From: san antonio
Can't compare the sheet you posted with the OPs configuration; much less compression. I did not claim that the 570II was a HP cam. You know that I am a torque guy and, as evidenced by the sheet you posted, the 570II will make tractor torque, especially with the higher compression and, IMHO, be much more fun to ride which is why I would run that cam over the others and why I said it would out perform the others. I don't need no stinking HP when I have 100+TQ on tap wherever the throttle is..
Last edited by djl; Jul 26, 2023 at 09:39 AM.
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If only there was a way to express both torque and rpm with one single number.. hmm
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From: nc
Im the OP. the cam is a 570cycle rama and not the 570-2. I had a T man 555 in the bike and decided to try the 570 It does come on quick with a lot of torque on botttom end but it ran out faster than the 555. The reason Im pulling the 570 is because of cam noise from the quick ramps and short duration. another guy had the same problem with his 570. I have but have never run a 54h cam so Im thinking about trying it. Andrews cam recommended it for my engine , tell me what you think.