cam advice please.
#21
If you are going to the trouble of tearing the heads off and adding a .03 gasket you may as well spend the extra $75 to get your heads decked and increase compression a bit. The gasket alone will not do anything for you. Decked heads and gasket you will notice.
#22
Never ran the T-Man so no opinion.
DD7 is at a standstill waiting for the hyd clutch hose to be delivered, and was waiting to hear from SOHB on their "wedge" primary chain adjuster and just heard that they will not have it available for about 3 to 4 months so will now throw the primar cover back on . In no hurry, have close to 2ft of snow on the ground now and it is still snowing.
#23
Hey Dalton and everyone else, I didn't mean to step on any toes about the "Dissing" of the SE203 cams. It just seems like no one likes them for some reason or another. When mention of SE203's is made, most people shy away from them and recomend either the SE204 cams or a different manufacturer. When comparing cams, I expect cams with vary similar durations and intake closing (SE203 and SE204) should be real close to each other for performance when set up properly. While the SE203 cams wont be the ultimate drag cams, set up properly they can still run pretty good and give a person a nice little boost over stock. Later, Calvin.
#24
Hey Dalton and everyone else, I didn't mean to step on any toes about the "Dissing" of the SE203 cams. It just seems like no one likes them for some reason or another. When mention of SE203's is made, most people shy away from them and recomend either the SE204 cams or a different manufacturer. When comparing cams, I expect cams with vary similar durations and intake closing (SE203 and SE204) should be real close to each other for performance when set up properly. While the SE203 cams wont be the ultimate drag cams, set up properly they can still run pretty good and give a person a nice little boost over stock. Later, Calvin.
#25
I've either had or ridden dealer builds with both of those cams. I had a 05 FLHTCI with the 95" 203 cam build and it was ok, it was a bump up from 88". My dad had a 06 Ultra with a 95" 204 cam dealer build that was identical to the 05 FLHTCI I had from AC to slip on's. I rode my dads bike many times and can say the 204 pulled just as hard maybe a touch harder on the bottom as the 203 and hung on longer than the 203. If I had to choose between the 2 cams I would go 204 without even thinking twice.
#26
The 204 cam was designed to raise static compression from valve timing. It is essentially the the same cam as the Andrews 37B with a 4 degree advance. If you raise piston compression with a 204, you will be looking at a host of unnecessary and potentially problematic issues that the 204 timing wasn't designed to deal with..
The beauty of the 204 is that it has an advanced, early exhaust close timing sequence allows a simple 95" build make a lot of power everywhere.. By closing the exhaust valve early, you are raising the static compression into the 180-190 range, depending on your heads. If you use a higher compression piston above the standard flat top, you won't be able to hot start it, and the pre-ignition will be unstoppable. This cam gives some brutal low end power while not sacrificing the top end. It's just a "best of both worlds" cam.
If you want to raise compression and go with a cam with more overlap, you will gain more top end, but at a price (IMO) that isn't worth paying on the low end.
Last edited by George C; 01-19-2009 at 08:46 AM.
#27
Another Cam Question
Hi all,
Just reading the thread, and have a couple of questions. I'm installing a 95 BB with a 203 cam. What mods do I have to make to the heads? I have been seeing a lot of talk about the Cometic .030 gasket. How much different is that than the provided gasket in my kit? Will I need to change out my stock pushrods?
Thanks
Just reading the thread, and have a couple of questions. I'm installing a 95 BB with a 203 cam. What mods do I have to make to the heads? I have been seeing a lot of talk about the Cometic .030 gasket. How much different is that than the provided gasket in my kit? Will I need to change out my stock pushrods?
Thanks
#28
Both bikes were running canned Stage 2 maps. If you consider the bike with the 204 cams was running a canned Stage 2 map there might have been more to be had if it was running a closer map. The 203 is a decent cam, just when you consider that both cost the same I think the 204 is just a better choice unless someone is giving the 203 away at a fire sale price.
#29
Dalton has given some incorrect information here that needs to be straightened out.
The 204 cam was designed to raise static compression from valve timing. It is essentially the the same cam as the Andrews 37B with a 4 degree advance. If you raise piston compression with a 204, you will be looking at a host of unnecessary and potentially problematic issues that the 204 timing wasn't designed to deal with..
The beauty of the 204 is that it has an advanced, early exhaust close timing sequence allows a simple 95" build make a lot of power everywhere.. By closing the exhaust valve early, you are raising the static compression into the 180-190 range, depending on your heads. If you use a higher compression piston above the standard flat top, you won't be able to hot start it, and the pre-ignition will be unstoppable. This cam gives some brutal low end power while not sacrificing the top end. It's just a "best of both worlds" cam.
If you want to raise compression and go with a cam with more overlap, you will gain more top end, but at a price (IMO) that isn't worth paying on the low end.
The 204 cam was designed to raise static compression from valve timing. It is essentially the the same cam as the Andrews 37B with a 4 degree advance. If you raise piston compression with a 204, you will be looking at a host of unnecessary and potentially problematic issues that the 204 timing wasn't designed to deal with..
The beauty of the 204 is that it has an advanced, early exhaust close timing sequence allows a simple 95" build make a lot of power everywhere.. By closing the exhaust valve early, you are raising the static compression into the 180-190 range, depending on your heads. If you use a higher compression piston above the standard flat top, you won't be able to hot start it, and the pre-ignition will be unstoppable. This cam gives some brutal low end power while not sacrificing the top end. It's just a "best of both worlds" cam.
If you want to raise compression and go with a cam with more overlap, you will gain more top end, but at a price (IMO) that isn't worth paying on the low end.
#30
If both bikes were running "canned" maps, I would say that a more fair test would be take the bike that has the SE203 cams in it and put it on a dyno with no adjustments or tuning; get the base line run. Take the same bike, swap the cams from the SE203's to SE204's. Do no other changes and make a base run. I'll bet they are closer than one might expect. You could also do the same test on the bike that has the SE204's in it. Later, Calvin. PS: you can also run more compression with the SE203 cams. Another thing, the stock '06 heads flow better than the stock '05 heads.
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