What will new cams do?
- Thread starter jesh
- Start date
eting_pro5
Member
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- '03 Pro5
This question would be perfect for the CAR KNOWLEDGE section......TOO BAD WE DON'T HAVE ONE!!!!!!
The only problem is that he had headwork and other mods done too. Cams without any other mods will kill your low end torque, shift the torque curve to the right (higher revs), but you won't see much if any hp gains.
When you get a better exhaust, maybe an intake, and quite possibly some fuel control, you'll see a much better top end, and honestly, you probably won't lose much low end due to the other mods.
Get custom cams ground. Tell a cam manufacturer what you want your car to do. I don't think it's worth the money to get the corksport cams. They're pretty close to stock in terms of lift, and only have a bit more duration (please correct me if i'm wrong).
When you get a better exhaust, maybe an intake, and quite possibly some fuel control, you'll see a much better top end, and honestly, you probably won't lose much low end due to the other mods.
Get custom cams ground. Tell a cam manufacturer what you want your car to do. I don't think it's worth the money to get the corksport cams. They're pretty close to stock in terms of lift, and only have a bit more duration (please correct me if i'm wrong).
Iluvmacs is right. I got the jdm intake cam..it had decent gains, nothing phenomenal, 7-8whp maybe .. and now i kinda wish i had one custom ground. But my exhaust cam is on its way back from crower. I would recommend them. They can do blanks and regrinds. I got a reground stock exhaust cam. I will post the specs at some point. They werent able to go as big as i originally wanted... cause of the cams limits, but they got close. It will be a modeate grind and should complement the jdm intake cam. In reality i expect nice gains once the exhaust is larger due to its influence on how much of a charge can be pulled into the engine, right now my exhaust cam is stock.
but here are some specs for whats currently available and what is stock
jdm intake cam adds 12 deg duration same lift as stock 210duration .344lift
the "mazdaspeed" exhaust cam is really just a repinned(do a search) stock intake cam so it is 198deg duration and .344"lift
the stock exhaust cam is 200deg duration .323"lift
perfworks has come out with cams that are more aggressive than any of these... and they are complementary... probably 215-220 duration .350-.355" lift is my educated guess
but here are some specs for whats currently available and what is stock
jdm intake cam adds 12 deg duration same lift as stock 210duration .344lift
the "mazdaspeed" exhaust cam is really just a repinned(do a search) stock intake cam so it is 198deg duration and .344"lift
the stock exhaust cam is 200deg duration .323"lift
perfworks has come out with cams that are more aggressive than any of these... and they are complementary... probably 215-220 duration .350-.355" lift is my educated guess
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akhilleus how much is the custom cam going to run you? and how big can we go in both the intake and exhaust cam?
BTW.. I'am waiting on the wanger cams I hear those will be sweet just not sure when they will be produce them and if they will do cam-gears as well.
BTW.. I'am waiting on the wanger cams I hear those will be sweet just not sure when they will be produce them and if they will do cam-gears as well.
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- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
cams without cam gears aren't going to net you much of real anything at any RPM. for the money, get the cam gears along with the cams.
twilightprotege
Member
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- 2001 323 Astina SP20 (P5)
moeed - i was off getting married 
most things have been covered in this thread, but all i need to add is...make sure the exhaust cam is BIGGER than the intake cam (i farked up on this originally, but that'll be fixed soon enough). atleast (if the lift is the same) 15-20degrees more duration
sub - the limit on our cams is about 280 degrees duration AT VALVE SEAT any more than that you're asking for power losses. i have 280deg duration at valve seat with my cams. they are about 220 deg duration @ 0.050" which is the numbers akhilleus was talking about.
most things have been covered in this thread, but all i need to add is...make sure the exhaust cam is BIGGER than the intake cam (i farked up on this originally, but that'll be fixed soon enough). atleast (if the lift is the same) 15-20degrees more duration
sub - the limit on our cams is about 280 degrees duration AT VALVE SEAT any more than that you're asking for power losses. i have 280deg duration at valve seat with my cams. they are about 220 deg duration @ 0.050" which is the numbers akhilleus was talking about.
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The J-spec cams are not that aggressive people. They are factory parts! You will not lose a "ton of low end power."
You will gain some top end torque, which some feel is a needed benefit. If you get the cams, get the intake manifold as well. They work well together!
You will gain some top end torque, which some feel is a needed benefit. If you get the cams, get the intake manifold as well. They work well together!
midnightracr
Member
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- Mazda,MP3
Yeah, OR you could wait until Perfworks & Andy come out wih there cams. They will have Stage1 & Stage2 cams. The Stage2 cams will be much more aggressive & will need valve springs if I'm not misstaken. They are solid billet so you know they will last. Also you won't have to worry about what the best degrees would be as in the intake and exhaust side if you were to get a custom job done. Nick & Andy have spent a lot of hours on dyno & reasearching which would be the best. Stay tuned beause I think they will be comming out with N/A cams here vey shortly & FI a little later. Those little dinky cams you speak of are comming off the Protege's from Japan. Th one's Nick (Perforks) & Andy are making are more peformane cams which is what you are looking for. Save your money for when these come out. I promise you if you buy the Corksport cams you will be highly dissappointed because they yeild very little if any in performance. Well maybe 5hp but that's o worth it if you ask me
Ok, so we have a seat to seat duration limit of 280 deg. Is that because of overlap (etc.) or because it shifts the power band way out of range?
Is there a max amount of lift we can get on a cam? After that the only thing left to change is lift angle (making the cam lobe flat to increase time at full lift).
When my warrantee runs out I'll have crower grind me some cams. Thanks for the info though, I'll need it when the time comes.
Is there a max amount of lift we can get on a cam? After that the only thing left to change is lift angle (making the cam lobe flat to increase time at full lift).
When my warrantee runs out I'll have crower grind me some cams. Thanks for the info though, I'll need it when the time comes.
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- 2011 MS3
The WAGNER CAMS WILL BE DONE SOON.Subghetto said:
