S&S 510c or 509c
Tourer
Joined: Mar 2010
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From: Mid-Mo.
Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
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From: Orange County
So, I'm guessing, for a 98CI Touring bike it would be best to go with a 509 or 551 cam. Am I correct?
509: Designed as a bolt-in, high torque cam for 1999-'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. Bolt-in torque.
** Since this is for 88CI, will it be OK for 98CI?
551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression. This is a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle-4000rpm.
***************** On another note...
Where do these cams come into play? When I would use either of these?
509: Designed as a bolt-in, high torque cam for 1999-'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. Bolt-in torque.
** Since this is for 88CI, will it be OK for 98CI?
551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression. This is a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle-4000rpm.
***************** On another note...
Where do these cams come into play? When I would use either of these?
HP103: For the rider who really wants the most top end horsepower. Easily make 100 horses from a stock engine with S&S intake and exhaust. Ideal for lighter bikes and racing applications where getting the most horsepower from a stock engine is imperative.
MR103: These bolt in-cams are for the rider who wants more of everything without giving up low end torque for high rpm horsepower, or vice versa. More power all across the wide power band, from idle to red line.
Tourer
Joined: Oct 2012
Posts: 284
Likes: 0
From: Northeast
This topic struck an interest to me. Like others here I am no cam/motor expert. I was looking for a cam upgrade for my 2007 96 cui Wideglide. I like the SE204 and the S&S 510 seems to be similar. Yes/No?
Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
So, I'm guessing, for a 98CI Touring bike it would be best to go with a 509 or 551 cam. Am I correct?
509: Designed as a bolt-in, high torque cam for 1999-'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. Bolt-in torque.
** Since this is for 88CI, will it be OK for 98CI?
551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression. This is a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle-4000rpm.
***************** On another note...
Where do these cams come into play? When I would use either of these?
509: Designed as a bolt-in, high torque cam for 1999-'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. Bolt-in torque.
** Since this is for 88CI, will it be OK for 98CI?
551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression. This is a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle-4000rpm.
***************** On another note...
Where do these cams come into play? When I would use either of these?
HP103: For the rider who really wants the most top end horsepower. Easily make 100 horses from a stock engine with S&S intake and exhaust. Ideal for lighter bikes and racing applications where getting the most horsepower from a stock engine is imperative.
MR103: These bolt in-cams are for the rider who wants more of everything without giving up low end torque for high rpm horsepower, or vice versa. More power all across the wide power band, from idle to red line.
I'm still wondering about this ^^^
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Scott
Seasoned HDF Member
Joined: Dec 2012
Posts: 6,673
Likes: 502
From: Orange County
Originally Posted by Road Star 
So, I'm guessing, for a 98CI Touring bike it would be best to go with a 509 or 551 cam. Am I correct?
509: Designed as a bolt-in, high torque cam for 1999-'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. Bolt-in torque.
** Since this is for 88CI, will it be OK for 98CI?
551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression. This is a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle-4000rpm.
***************** On another note...
Where do these cams come into play? When I would use either of these?
So, I'm guessing, for a 98CI Touring bike it would be best to go with a 509 or 551 cam. Am I correct?
509: Designed as a bolt-in, high torque cam for 1999-'06 models. 180 psi cranking compression, no need for compression releases. For 88 CID engines with stock compression ratio. Idle-4500 rpm. Bolt-in torque.
** Since this is for 88CI, will it be OK for 98CI?
551: Designed for engines with 96 to 106 CID and 9:1 to 9:9 compression. This is a bolt-in cam set designed for stock or mildly modified touring bikes. 551 cams are not recommended for compression ratios of 10:1 or greater. Greatly improves low-end and midrange torque, strongest from idle-4000rpm.
***************** On another note...
Where do these cams come into play? When I would use either of these?
HP103: For the rider who really wants the most top end horsepower. Easily make 100 horses from a stock engine with S&S intake and exhaust. Ideal for lighter bikes and racing applications where getting the most horsepower from a stock engine is imperative.
MR103: These bolt in-cams are for the rider who wants more of everything without giving up low end torque for high rpm horsepower, or vice versa. More power all across the wide power band, from idle to red line.
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campdreamer47
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