203 cams
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Outstanding HDF Member
Joined: May 2005
Posts: 2,525
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From: Montreal, Canada
203 cams
Hey guys!
I purchased a set of SE 203 cams from my buddy for 100.00 cdn
with les than 500km on them. There like new. At the moment I'm getting 73hp with 82tq with a Big Sucker, HSR 42 and SEII slip-ons. What should I expect in gains on the dyno if any at all?
I purchased a set of SE 203 cams from my buddy for 100.00 cdn
with les than 500km on them. There like new. At the moment I'm getting 73hp with 82tq with a Big Sucker, HSR 42 and SEII slip-ons. What should I expect in gains on the dyno if any at all?
Stellar HDF Member
Joined: Mar 2006
Posts: 2,395
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From: Utah
RE: 203 cams
I haven't seen dyno results just on the cams, but I >think< the 203's are primarily intended to provide more low end torque than stock. You need a balanced approach to make cams really work for you... larger throttle body, better flowing heads, and better flowing exhaust and intake. I think you should get a matched package instead of doing it piecemeal if you are looking for h.p. and top end.
C#
C#
Thread Starter
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Outstanding HDF Member
Joined: May 2005
Posts: 2,525
Likes: 4
From: Montreal, Canada
RE: 203 cams
I'm not sure if you read my post so I'll say it again. Big sucker,
Mikuni HSR42 and SEII slip-ons. Next I'm planning on boring
the cylinders and putting bigger pistons.
Thanks Jimb for the educated answer that I was looking for.
Mikuni HSR42 and SEII slip-ons. Next I'm planning on boring
the cylinders and putting bigger pistons.
Thanks Jimb for the educated answer that I was looking for.
ORIGINAL: cwsharp
I haven't seen dyno results just on the cams, but I >think< the 203's are primarily intended to provide more low end torque than stock. You need a balanced approach to make cams really work for you... larger throttle body, better flowing heads, and better flowing exhaust and intake. I think you should get a matched package instead of doing it piecemeal if you are looking for h.p. and top end.
C#
I haven't seen dyno results just on the cams, but I >think< the 203's are primarily intended to provide more low end torque than stock. You need a balanced approach to make cams really work for you... larger throttle body, better flowing heads, and better flowing exhaust and intake. I think you should get a matched package instead of doing it piecemeal if you are looking for h.p. and top end.
C#
Novice
Joined: Jul 2006
Posts: 20
Likes: 0
From: Meadville, Pa
RE: 203 cams
On my 2002 Heritage Classic, I have the SE 203 cams, Big Bore, SE Race Ignition, SE Intake, TC8 Carb. and SE 2 Exhaust. When the "Stealer" Dino tuned the upgrades, he statedmy bike put out more low and mid range torque than the new 96 engines. I believe you will see a significant hole shot improvement. When I let mine go at the red light/green light, LOL, it feels like it wants to pull your arms off......
Outstanding HDF Member
Joined: Oct 2005
Posts: 2,035
Likes: 5
From: near Buffalo, NY
RE: 203 cams
I wouldn't waste your time with the 203 cams. If you are going to go through the labor, you might as well get something that will perform strong with your light bike.
The 203's are for lead sleds.
Go with the 204 grind instead.
The 203's are for lead sleds.
Go with the 204 grind instead.
Thread Starter
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Outstanding HDF Member
Joined: May 2005
Posts: 2,525
Likes: 4
From: Montreal, Canada
RE: 203 cams
I hear you George. But my bike being a little lighter. Won't the 203's make it pull like an SOB.
ORIGINAL: George C
I wouldn't waste your time with the 203 cams. If you are going to go through the labor, you might as well get something that will perform strong with your light bike.
The 203's are for lead sleds.
Go with the 204 grind instead.
I wouldn't waste your time with the 203 cams. If you are going to go through the labor, you might as well get something that will perform strong with your light bike.
The 203's are for lead sleds.
Go with the 204 grind instead.
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Outstanding HDF Member
Joined: Oct 2005
Posts: 2,035
Likes: 5
From: near Buffalo, NY
RE: 203 cams
You will run out of cam around 3200 RPM, and believe it or not, the 204 will pull stronger down low than the 203, and will keep pulling right up to redline..
I can't for the life of me understand why they still offer the 203.
It's gotta be emissions related, so they can sell a Big Bore that's street legal.
I can't for the life of me understand why they still offer the 203.
It's gotta be emissions related, so they can sell a Big Bore that's street legal.
Road Master
Joined: May 2006
Posts: 764
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RE: 203 cams
oh also, if you wait to do the cams the same time you do the boring,you can get away with the stock pushrods instead of cutting the old ones out and using adjustables,they can be a bear to deal with if you've never done it before.I know other guys are going to diss the 203's but in reality you're not going to get much more torque than them with your setup.Some of the other cams kick in at different rpms.If you're more of a light to light guy I'd use them.A lot of people are hung up on dyno numbers.The reality is if you get on a bike that's got 90hp and 100tq and then ride one that's got 95hp and 103 tq the chances of you being able to tell the difference is almost 0%.However, if bike 1's cam kicks in at 2500 and bike 2's cam kicks in at 4000 you will tell the difference.Looking at your bike I'm guessing you're not touring but dragging instead.If that's the case stay with a cam that kicks in early.A lot of people who brag about their dyno numbers never reach the rpm's the need to "peak" anyway.