Compression ratio and Cam 400ex
#1
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So, I plan on getting a cam for my big bore 400ex soon. I ride a trails and do a lot of dirt hill climbing similar to dunes. I've narrowed it down to Hotcam stage 1 or 2. I have read a lot of mixed ideas on these cams. I've read ppl say stage 1 is bottom mid power, stage 2 is mid top but everywhere i look to buy the description says stage 1 boost all around stage 2 recommended for big bore with more boost on top.
I'm looking for max mid range. I feel i have plenty of bottom. Now I know that i need higher compression for the stage 2 to keep from losing 2 much bottom. But I didn't build this 440.
1.)Is there anyway to find my compression ratio?
2.)Anyone out there with the experience of stage1 vs stage 2 HotCam?
I'm looking for max mid range. I feel i have plenty of bottom. Now I know that i need higher compression for the stage 2 to keep from losing 2 much bottom. But I didn't build this 440.
1.)Is there anyway to find my compression ratio?
2.)Anyone out there with the experience of stage1 vs stage 2 HotCam?
#2
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Site went down again last night. Guys probably still working bugs out.
Dennis Kirk had yet another description for the stage 2 HotCam it said Engineered for MX and Desert racing needs. Well, I'm not going to be doing that. But its reccommended for bores over 426 but, i still need to know if my compression is ok to keep from losing power down low right? Do i need 11.5 : 1 or would 10:1 be sufficent. I'm sure I'm running at least 10:1 being big bore.
Dennis Kirk had yet another description for the stage 2 HotCam it said Engineered for MX and Desert racing needs. Well, I'm not going to be doing that. But its reccommended for bores over 426 but, i still need to know if my compression is ok to keep from losing power down low right? Do i need 11.5 : 1 or would 10:1 be sufficent. I'm sure I'm running at least 10:1 being big bore.
#3
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Whatever compression ratio you have with your big bore kit will be sufficient with either cam. If you get the stage 2 cam you will need to also buy yourself a rev box/higher revving ignition to take full advantage of that cam. If you don't like revving the motor beyond what honda intended, then stick with a stage 1. It still gives you much more in the midrange and power up top than the stock cam, and works nicely with the stock ignition.
#6
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