Anyone know anything about them ? Any hp gains for just tuning camgears alone ?

 

There are several threads on these. I'd do a search for you but I'm a bit pressed for time. Since it's of interest to you, perhaps you could do the search?

 

Dave,

S2fire PM'ed me as well. I ran a search but no luck. Can you help him by any chance ?


Thanks
Ben

 

Here's some results I got with "+toda+cams". Not sure if they answer the questions.
https://www.s2ki.com/forums/index.php?showt...30&hl=toda+cams
https://www.s2ki.com/forums/index.php?showt...76&hl=toda+cams
https://www.s2ki.com/forums/index.ph...pic=168603&hl=

You can check out the rest here:
https://www.s2ki.com/forums/index.php?act=S...=%2Btoda%2Bcams
There's 14 pages, most of which don't deal with the subject but you can sift through them to see what there is. Like I said, I don't have time to screen through all of them.

 

Thanks a lot. No one seemed to have the camgears I believe I won't get much power without properly tuned camgears along with cams.

 

As far as I know, no one is using cam gears (or at least I haven't seen any threads on them). I believe there are 2 reasons:

1) The only popular cams available for this car are the Toda cams. Most people either a) install them and don't actually know if they make power or not, so they don't bother trying to tune them or b) install them and they don't make power, so they immediately remove them and try to sell them or c) install them and they fail, so the cams (and possibly the engine) has to be replaced.

2) even with decent cams, you're only going to pick up 5-10hp. Are you going to pay another $400 for the cam gears plus another $600 in tuning time just to pick up another 2-3hp?

Now... if you're FI and you have a set of turbo cams that you need to tune, the cam gears may provide more gains... but probably not on an NA application.

 

I purchased the Toda Cam gears in June and installed them in my race car. I do not have Toda cams. I have a set of cams custom made by Cam Motion. I did see a marked improvement in my 1/4 mile Et and MPH when I changed the cam timing. The intake lobe centerline was originally on 107 degrees ATDC and the exhaust lobe centerline was originally on 115 degrees ABDC. The cranking compression was ~ 165 psi and the car ran 8.87 @ 150.72.

I changed the intake lobe CL to 101.5 and the exhaust CL to 120. The cranking compression is now ~ 195 psi and the car ran 8.76 @ 152.51. I would like to get the cranking compression to ~ 220-230 psi, in part by changing the cam timing.

I have since them made other changes (ign. timng, increased intake manifold flow, etc.) and the car now runs 8.3's @ 158 (I'm sure by now you have figured out that this is NOT in an S2000 body, it's in a 960 lb. rear engine dragster).

I do not have any dyno results, but I plan to dyno this winter and try "moving" the cam around some more. Unfortunately, due to tight valve to valve clearance, I can't get the lobe separation any tighter than ~ 110 degrees. I estimate that the engine is making ~ 315-320 rwhp.

 

Where does this estimate come from? If your estimate is correct and you motor is NA, then it would be the most powerfull NA F20C known (on S2KI) by a wide margin.

 

There are several software packages (i.e. Quarter Jr., Performace Trends, etc.) and many common formulas used by drag racers (i.e. 200 x Wt. / RWHP = ET^3) that give good estimates of HP.

I have individual throttle bodies, ported heads, 13:1 CR, etc. and many many many other modifications to the engine along w/ a clutchless 5 spd. transmission.

The engine is NA and is still currently 2.0 liters (121.9 cid) although I will increase the cid this winter to ~ 125 cid.

 

Sounds interesting, but I really can't figure out how you have more than 1 head on there ...