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PostPosted: Thu Aug 06, 2009 1:42 pm 
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In that car, the econo cam.

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PostPosted: Fri Aug 07, 2009 9:24 am 
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suprf1y wrote:
In that car, the econo cam.


I was thinking it was probably that one, but I wasn't sure if another grind made better torque in that range or not.

Thanks!

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PostPosted: Mon Oct 05, 2009 7:25 pm 
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What I want is an aggressive cam that i can drive on the street(with a nice loping idle). Fuel economy is not at all a concern of mine.

I was reading that if i get a steeper lobed cam that the torque level will go down which i do not want since these cars do not have much torque from the beginning. As long as the torque is at the stock level i will be happy. I want this thing to scream mid through top rpm range. I wont be going past 7 grand.

210/340 gives power from 4500-8500 rpms. Will i still have the same power from 800-4400 rpms as stock? Any cam that would start the power a little earlier?

I will be getting the +10 gear along with the cam to increase the bottom end.

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1994 Geo metro hatchback 1.0 M5. 214,000 miles. 3 Tech 365/222 cam, +10 cam gear, air intake piping to fender delete, tbi bridge delete, exhaust sidepiped before right rear tire, timing at 17 degrees, lowered 1 1/2 coils all around.


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PostPosted: Tue Oct 06, 2009 2:46 pm 
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if you want it to scream and you say you arent worried about fuel consumption, the bigger the better. 226/375

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PostPosted: Tue Oct 06, 2009 3:10 pm 
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Will it still be drivable though? starting off at lights no problem? no idle adjustment needed? I want a rough idle but want it to idle slow

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Marshall
1994 Geo metro hatchback 1.0 M5. 214,000 miles. 3 Tech 365/222 cam, +10 cam gear, air intake piping to fender delete, tbi bridge delete, exhaust sidepiped before right rear tire, timing at 17 degrees, lowered 1 1/2 coils all around.


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PostPosted: Tue Oct 06, 2009 3:18 pm 
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Quote:
210/340 gives power from 4500-8500 rpms


In the 16V motors. In the G10 it is a very mild cam.

You probably want the 222/365 with +10 sprocket.

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PostPosted: Sun Nov 22, 2009 9:56 am 
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Location: missouri
I want economy with power to haul 400lb total load up the hills without loosing to much power. Cam for a 1.3 16v SOHC 2000 metro hatch 5spd. I will be driving 90 miles a day 75 mph highway with the air on in summer. There are several long slow and fast inclines.
Head milled .010 inch,Bore 74.50 mm,internals ballanced. I have 40 and 45mm TB`s. I have blended the seat to the heel of the throat in the intake pocket and cleaned the castings in all the head ports in/ex. I also cleaned the welds in the intake. I plan on purchasing the underdrive pully,header and adj. timing gear. I also plan on installing tall narrow tires. I have a new stock cam and a good used cam to grind. What are your thoughts.


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PostPosted: Mon Nov 23, 2009 9:21 am 
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My thoughts?

It's a 1.3. You already have economy.
You are looking for power.
The parts that you have, or are going to order, are all geared toward that.
There is no 'economy' cam for the 1.3, as the stocker is so mild.
I would recommend my mild performance cam. It will give you more power, stronger pull to redline, and not affect the drivability (other then to make it better), or the MPG significantly.

The cam found in this thread is the way to go

viewtopic.php?f=30&t=25113&start=25
Quote:
These motors, being small displacemt, and 16V are very duration sensitive, and the stock cam is very mild.
Stock duration is 184 degrees at .050"
This is actually milder than both my econo cam, and the xfi cam.
Stock lift is IIRC, .300" intake, and .280 exh.

The new cam has .340" lift, 192int/198exh duration
Thats a 8 degree gain on the intake and a 14 degree gain on the exh.
The exh. duration, and extra .060"(!!) lift gain will help offset the stock manifold.

It sounds like its working OK with your OBD2, and that was my goal.

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PostPosted: Mon Dec 21, 2009 3:07 pm 
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I have a G16A 8v that I am about to tweak in a Sidekick/Tracker. It will see daily driving use and some offroad use. It is not intended to go over 6000rpm and will generally spend its time between 2000 & 5000rpm. It will be mated to an auto. The intake will be improved, the head will only be cleaned up at the most with maybe a small bump in compression but not over 9.5:1 and the exhaust will get a Tri-Y header into 2.25" . It will also run an underdrive pulley, thermo fan and an adjustable cam gear.

From what I have found searching I think the stock cam is around .356" lift and 202 duration (.050"?). I have seen suggestions to go to 210 to 225 duration and .380 to .395 lift (maybe a touch more on the exhaust compared to the intake). What can you suggest?


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PostPosted: Mon Dec 21, 2009 3:31 pm 
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Looking at my profiles, I would suggest either the 216/375, or 226/395.
Get in as much lift as possible, to around .400" and go as high as mid 220's duration, but not less than 210 at .050"

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PostPosted: Mon Dec 21, 2009 3:35 pm 
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Would the idle still be fine at 226/395?


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PostPosted: Mon Dec 21, 2009 3:36 pm 
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Also, am I correct in thinking that increasing the lift might also bump the comp ratio a little?


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PostPosted: Mon Dec 21, 2009 6:39 pm 
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It would be a little rough, but quite good.
No, you are not. Lift has nothing to do with compression.

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PostPosted: Mon Dec 21, 2009 10:22 pm 
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Thanks. I had just come across something where someone was talking about how keeping the duration short but increasing the lift would help fill the chamber a bit more thus bumping the comp. I always thought that it was just a calculation based on volumes but thought I would ask for clarification.


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PostPosted: Mon Dec 21, 2009 10:31 pm 
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It's the duration.
The longer the valve is open, the less time you have to build compression.

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PostPosted: Thu Dec 31, 2009 10:58 am 
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i am looking for the eco head package , need advice on what to get for best FE

its for a 1989 geo metro lsi btw :) thanks


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PostPosted: Thu Dec 31, 2009 11:45 am 
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Click on the link in my sig, and send me an email.

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PostPosted: Tue Jan 05, 2010 3:31 pm 
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Location: Bangalore (the city of India's fastest cars)
suprf1y wrote:
I have developed a new cam for the G13/G16 16V SOHC.

206 degrees duration at .050" on the intake, with .370" lift
210 degrees duration at ,050" on the exhaust with .370" lift.

This is a very aggressive cam for the G13, and slightly less so for the G16.
Probably will not work without setting a code on the OBD II cars, but would pull strongly past the fuel cut anyway.
Should work OK with the OBD I, and G16 without problems.

Is the reground camshaft for the G13B (distributor type) and G16B (distributorless type) the same one?


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PostPosted: Fri Jan 15, 2010 2:31 pm 
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Okay SuprF1y.
A not-yet-built G16B with a 6000RPM red line, 12.5:1 SCR, full time 85% Ethanol fuel(105-109 octane on par with C16 due to much cooler intake charge.) in a RWD 2400lb 6spd hatchback. I'm running double overdrive so I'm looking at <2000RPM at 55mph and <2500rpm at 70mph. I want zero overlap, I'm going with custom intake/exhaust so restriction isn't an issue. I need to keep a respectable amount of torque between 1500RPM-2500RPM. So I'm thinking a little bit more duration than the stock Tracker motor offers with plenty of lift to compensate for the higher compression ratio.

What do you recommend?


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PostPosted: Fri Jan 15, 2010 5:34 pm 
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You want more duration, but zero overlap?
Overlap is not an issue, so don't worry about it.
Stock duration, maybe a little less, and more lift. Something similar to the G13 cam discussed above (.340" lift, 192int/198exh duration)

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PostPosted: Sat Jan 16, 2010 2:26 pm 
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The reason I was concerned about overlap is the exhaust flow varies more with alcohol. With leaner A/F under cruise 14-16:1(like 22-24:1) and 7-8:1 under WOT I was thinking I'd get a bi-polar exhaust problem. Too little velocity under cruise or too much exhaust pressure under power.

It's not going to be a race cam so I won't worry about it. Thanks SuperF1y. I'll try not to take too long to get it done =).


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PostPosted: Thu Jan 21, 2010 10:51 am 
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Location: San Diego , CA (alpine)
got anything(cam) for g13 dohc?

and ifso what do you suggest for more speed without killing to much mpgs?


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PostPosted: Mon Jan 25, 2010 9:07 am 
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From the first page


The 89-up 3cyl and GT have the same valvetrain design, so these are listed together.
Lift/Dur
305/184
335/200
340/210
340/215*
350/218
350/225*
365/222*
375/226*

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PostPosted: Sat Feb 06, 2010 3:26 am 
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Hey suprf1y, I have read all of you cam threads an have a question. I have a 1.6l 8v in a tracker/sidekick for off-road and daily driver purposes. I see here you recommend:
"as much lift as possible, to around .400" and go as high as mid 220's duration, but not less than 210 at .050". "
I have a cam that I picked up a while back, Its specs are as follows:
I: 193deg. @.050" .396" lift
E: 204deg. @.050" .396" lift
My question to you is, would you say that I should run it, or try and sell it to get one of your cams with slightly more lift and duration?
I am looking for some more low end(2000-5000rpm) and have hopes of a turbo in the future(also for low end power).
Thanks, Stu


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PostPosted: Sat Feb 06, 2010 6:36 am 
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That's awfully short duration, but since you have it, try it, and see how you like it.
My guess is that it'll run out of steam around 4000 RPM, but will make strong power below that.

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