Cams for rb20det

Discuss the RB20, RB25 and RB26 series engines.
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urcaptnspeaking
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I plan on doing an Rb20det swap in my car here soon. And I want to get a good cam upgrade. Ive searched not only on here but google as well and Im not turning up much info.

All I found on here was HKS cams and Tomei, but I cant find where to buy them.... And thats where Ive searched google. I searched for Rb20 cams , Rb20 Tomei , ect.

If there are any other suggestions to good cams. I want a nice lopey idle thats still streetable.

So dont flame cuz Ive been searching for almost an hour and a half now.
Modified by urcaptnspeaking at 1:19 PM 1/10/2008


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nizmo zilvia
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Ebay and RHDJapan have the cams. Our sponsors have them as well. Just try a bit harder

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urcaptnspeaking
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I tried ebay too.. I searched for rb20 cams .. and it brought up cams gears...thats all

I forgot to mention that.

Ill check the sponsors. What cams did you go with and your feedback on them??

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nizmo zilvia
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urcaptnspeaking
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Thanks man. I dont know how I didnt find it.

and what do you reccommend since you have done this?

I want a nice lopey idle. And I read that the procam you need some other modifications to use. Right??
Modified by urcaptnspeaking at 1:20 PM 1/10/2008

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nizmo zilvia
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Hahaha I don't know what made you think I have cams as Im completely stock minus custom intake mani and am performance downpipe with rb25 turbo and fidanza flywheel.

I will get cams and it shall be Tomei Procams. The links above are Poncams. I believe the only difference are the lift.

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urcaptnspeaking
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ha I meant the swap itself. So therefore you more than likely have more general info on the motor than I do.

So no modifications for the procams to work??? I dont know what it was that I read but it said something about there needing to be mods. Oh well I will go with the poncams. Unless someone has a legitimate arguement as to why i shouldnt.

Also how does your car run?? is its performance to be dealt with on the street and can show up those wannabe's? Also my buddy has a new cobalt ss (the supercharged one) and I would love to show him up ( on a drag strip of course) that his 17000 didnt buy him the performance he thought.

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nizmo zilvia
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Talk to me on AIM if you have questions. Don't want to spam the forum

ChuKi RB

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Coolwhip
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that $17k bought him a new car. Our car will never touch that.

ANYWAYS, haha.

Procams have higher lift and usually require you to mod the ribbing in the head to allow the cam to pass. As well aftermarket valve springs are in call as the stock one I believe will bind at a certain point.

Poncams are fine. However, if your just after the loopy idle a set of cam gears and set the cam timing to have a lap over than you'll have your effect.

However, why do that? Messes with your streetablility at idle when desiring that loop that the SRT's achieve when altering their cam timing.

Start contacting the sponsers as they will be able to get ahold of cams for you. Even in our Adverstiers Special forum I believe there is a deal going on them, or atleast a company that has them in stock or on order.

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urcaptnspeaking
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ha thanks guys. i checked some of the sponsors and couldnt find anything. I dont know why I couldnt. I looked under the RB sections on enjukuracing and pahse2 and frsport. Why the he** can I not find this stuff?

Chuki I added you. My SN is the same as my name on here.

and I know our cars wont be as "nice" but faster I shall be, and out handle him I will as well

I dont want the cams just for the idle I want the overall performance, just the idle would be a plus.

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Coolwhip
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zerothread/226720

I know, you owe me :P

can't wait to see some car part/gifts in the mail

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urcaptnspeaking
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Coolwhip wrote:zerothread/226720

I know, you owe me :P

can't wait to see some car part/gifts in the mail
how about a no bake cookie

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blues14
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Cobalt ss is not a "nice" car.....its a cheap POS Chevy trying to be an import. It belongs in the Hertz rental car lot right next to the Neon SRT-4. IMO

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urcaptnspeaking
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but you cant deny that out of the box those cars are pretty fast. theres an srt4 boosting 27 psi here in town and its retarded fast. I cant knock the cobalt having rode in it.. its a solid car, and the GM performance cobalt did set some sort of record on some speedchannel show(sorry for lack of info i jsut dont remember)

I dont like knocking cars in general due to its all about taste..and what meets your needs. I respect all people who want to put the effort into improving their cars. Its true I dislike cars and think some just suck but the owners I will respect(not implying anyone here isnt).

Im sure srt-4 owners and cobalt owners knock us too about our cars being slow until we sink loads of money in them. Which has been said on this site before.


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nizmo zilvia
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blues14 wrote:Cobalt ss is not a "nice" car.....its a cheap POS Chevy trying to be an import. It belongs in the Hertz rental car lot right next to the Neon SRT-4. IMO


Edit: Thanks for the new sig!!

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Coolwhip
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Stay on subject you guys...

Rhdjapan has the cams

Ravspec has the cams

Greenline

Vividracing

Enjuku

The list goes on, most places won't have them listed on their website, but you can bet that they'll source them for you and ship you them if you have the money to buy em. Pick up a phone or type an email.

Good luck

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Carl H
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a properly setup car running tomei pon or procams WILL NOT LOPE, cam lope is due to overlap which needs to be dialed out using cam gears.tomei cams are designed to drop in and be close if not spot on...my procams idle smoothly at 650rpm with just a hint that it might be cammed.

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urcaptnspeaking
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so you are basically saying lope is bad...

check this video out.. I dont know if hes a member here or not but the idle on this thing is sweet.

http://www.youtube.com/watch?v=VQW1AAPi4tc

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DriftingisLame
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That is me.

Thats what happens when you put rb26 cams into an rb20 with stock cam gears/timing. It works, but not well, I lost all idle quality, and most of my low end, with the only gain being 6500rpm+ It can be made to work with adjustable gears. Overlap is not good, it is good in NA motors when both valves are open because the intake charge pressure coming into the cylinder helps scavange exhaust gasses out at a faster rate. In a turbo car, there is too much intake charge pressure anyway, and the intake charge blows out the exhaust valve under excessive overlap.

I could talk about cams all day long, wish I had the time to explain.

Honestly I think you'd benefit greatly just from gears, and if its the ****ty idle you want, gears are a ****load cheaper than cams.

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urcaptnspeaking
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I want to cam the motor either way. But I understand what you are saying.. So I guess thats all for the lopey idle..

OK then. What should I do to the motor besides making sure its in good working order. What performance should I upgrade to get me well over 200 whp? Im new to turbo motors. I can build you a hell of a N/a motor.. But Im used to American Muscle.. Ive worked/built/helped build Trans Ams my whole life.. But when it comes to these Its all new territory I hope you understand my ignorance. I know the concept is the same.. but I want solid info to help me learn more about these motors.

Yellow4g63
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urcaptnspeaking wrote:I want to cam the motor either way. But I understand what you are saying.. So I guess thats all for the lopey idle..

OK then. What should I do to the motor besides making sure its in good working order. What performance should I upgrade to get me well over 200 whp? Im new to turbo motors. I can build you a hell of a N/a motor.. But Im used to American Muscle.. Ive worked/built/helped build Trans Ams my whole life.. But when it comes to these Its all new territory I hope you understand my ignorance. I know the concept is the same.. but I want solid info to help me learn more about these motors.
A good exhaust 3" or bigger, 3" downpipe, a Front Mount Intercooler and a tune on the ecu. I made 240hp on the Stock RB20 turbo at 13-14psi. If you want real power throw that stock turbo in the trash and get a T3/T4E or if your balling out of control GT30R and bigger injectors and your good to go.

apollas
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To OP,

I have 264 Tomei Cams if you are interested. Give me your email and ill send you some pics

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urcaptnspeaking
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i definately would be interested, but i dont have the motor yet. I have to wait til my income tax comes in. Im just getting ideas so I can get it all ready before I drop it in.

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urcaptnspeaking
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Yellow4g63 wrote:
A good exhaust 3" or bigger, 3" downpipe, a Front Mount Intercooler and a tune on the ecu. I made 240hp on the Stock RB20 turbo at 13-14psi. If you want real power throw that stock turbo in the trash and get a T3/T4E or if your balling out of control GT30R and bigger injectors and your good to go.
what kind of fuel mileage are you getting like that out of curiousity

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Carl H
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26-27highway 18-21 intown.

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urcaptnspeaking
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well that isnt bad. Where can I get an ECU tune.. Cuz I doubt I can do it and In WV where could i possibly get it...or send it for that matter

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Coolwhip
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Carl ^ can

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urcaptnspeaking
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well carl if you can/will let me know some details.

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DriftingisLame
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For power levels like that, cams are not necessary. I think you should stick with stock cams for a while for driveability, fuel economy, and low end purposes for any applications below 280-300hp.

I made 219 hp 200 tq on my rb20 with the following mods.

Spearco FMICSAFC12 psi boost with a bleeder valve boost controller (11 psi by redline)open dp (stock 2.5")

It was fast enough to get me in trouble, and kept me entertained for a year or 2.

-Max

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urcaptnspeaking
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haha. I just want it to run good. when people get in it they can respect its power. I have a supercharged bonneville thats boosting 11psi now.. and it better outrun that or i wont be happy


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