DRZ-E Cams vs Hot Cams

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DRZ-E Cams vs Hot Cams

Post by 4Strokes » Fri May 20, 2016 12:20 pm

Topic: DRZ-E cams vs "Hot Cams"
Author: tomass
Posted: 03/30/2004 1:31:16 PM

One day, I hope to put in slightly more agressive cams in my 02 DRZ 400-S. There are the cams that go in the E model and the cams from "Hot Cams". (Too poor for those super expensive race cams.) The hot cams have a 9.7 lift, and 250 duration. Does anyone know the lift and duration on the E model cams? Or which cams would give my bike more power? (Matt Nelson, Please Help!!!)

I also want to put in the E model base gasket to boost compression. I've heard that if you just change the intake cam only, you greatly improve the bottom end power, but when you also put in the exhaust cam, you slightly lose some of that low end power and increase the top end power, and the way to counteract that bottom end loss, is boost the compression. Anyone ever hear of that? Any info would be appreciated.

Reply by moredesert on 04/01/2004 3:39:20 PM
The hot cams make more power but if you can find some E cams from someone that did the Hot Cam switch cheep that would be the way to go. I'm in the process of putting in a 436 kit 13:1 with a Hot intake cam. I'll let you know how much HP I get out of this. (Part of post removed for copyright issues.) -Admin

Reply by tomass on 04/02/2004 4:13:26 PM
Thanks a lot for the cam specs. And yes, please let me know what you think about the 436 kit. I would like to get one as well some day.

But how would you know what size jet to put in it? There's a bigger piston, and more radical cam. A bigger jet would definately be needed.
Do you have the same bike as mine? Also, if you could give me an idea of how much that kit would cost me, I would appreciate.

Reply by TrikDRZ on 04/07/2004 12:35:57 AM
Tom, Looks like the gains breakdown like this:
  1. E model base gasket swap - OK
  2. Suzi E model cams - Decent
  3. Hotcams - Good
  4. head work - Better
  5. Edelbrock carb - Best
  6. Suspension mods - Great
  7. Big Bore Kit - ROCKIN
After all that, the bike would be superb. Oh and an IMS plastic tank also. Bombs away on all the rest of the "trail bikes"! Once I get the bod back in MX shape and get these mods done, I'm going to race this anchor. I'll make sure to hit the horn a few ties as I pass by in a cloud of dust.

Reply by tomass on 04/07/2004 2:52:22 PM
Some day when I hit the lottery, I'll get all that done. Until then, I will just dream of it.

Reply by 97dohc on 04/07/2004 2:59:06 PM
can you swap in the E model headgasket without changing the jeting?

Reply by tomass on 04/08/2004 1:41:32 PM
I'm not sure. That's a good question. I don't know if higher compression needs extra fuel.

Reply by moredesert on 04/10/2004 11:32:17 PM
I just recieved my cylinder back and installed it today. With shipping the 436 kit was $469. I put a Hot intake cam in too. I left the stock exhaust cam in for more low end. With my lower gearing it pulls plenty hard on top anyway. Jetting can't be that much different although I will have to run race gas.

Reply by tomass on 04/13/2004 12:27:07 PM
Cool. So how much horsepower did you gain? (a guestimation)

Reply by Webmaster on 05/08/2004 12:10:26 PM
These specs are directly from Suzuki PR:

Suzuki DR-Z400E
  • Valve Lift Intake: 8.9mm
  • Valve Lift Exhaust: 9.3mm
  • Intake Open: 14 BTDC
  • Intake Close: 66 ABDC
    Exhaust Open: 65 BBDC
  • Exhaust Close: 29 ATDC
Suzuki DR-Z400S
  • Valve Lift Intake: 8.5mm
  • Valve Lift Exhaust: 8.2mm
  • Intake Open: 20 BTDC
  • Intake Close: 55 ABDC
  • Exhaust Open: 56 BBDC
  • Exhaust Close: 19 ATDC
Reply by tomass on 05/09/2004 07:38:12 AM
Thanks a lot 4Strokes. That helps a lot. Tom

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