Tomei cams

[kouki-gymkhana]

Well, after almost a month of waiting around for the machine shop to source a replacement camshaft to compensate me for BREAKING my intake cam clean in two when they planed my head, I've decided to say f-it and just pick up some aftermarket cams. I want to go with the Tomei Poncams but searching the forum didn't reveal that much about which ones would be best suited to my needs. I'm looking for a total drop in replacement that won't require any headwork or new valve springs. From reading through the tomei specs, it looks like the 256 degree 8.5mm lift cams will fit with NO additional mods. Can anyone confirm this? Anyone using these cams on a SII RB25 (97+)? Is there a better application for my needs? What's the most aggressive poncam I can use without any additional mods?

I know it's quite a few questions but before I drop this much cash I'd like to get some opinions/input from you guys.

Thanks!

[takaramotors]

the 256 allows you to keep the stock springs and retainers which we carry all the tomei products. Cheers, Sean

[kouki-gymkhana]

Can you e-mail me a price quote shipped to 33156 as well as an estimated arrival time for a set of 256 I & E poncams? E-mail is jaydstewart *AT* hotmail.com. Your website appears to be down.

Thanks!

[Yellow4g63]

256 why so small? why not atleast go with the procam 260 lash? You don't need valve springs for those. The price will prob be about the same. I went 270's on my Rb20.

[Darius]

Sucks that the shop is d!ck you around. I'm sure they figure if they ignore you, you'll go away. Why don't you just ask them to pay you a certain amount based on replacement cams (~$100) and put that towards your new Tomei cams? Threatening with small claims court might also work because it's simple for you to fill out a claim and a PITA for them to show up and defend themselves when they know they broke it.

A little off-topic, but oh well...I have to pull my cams to bleed my lifters anyways, so I was thinking of swapping some Tomei procam 260's like yellow suggested. I just had a couple questions:

1) Is tuning required when swapping these cams into a stock motor or will it run fine until tuning is more critical after further modification? I'm looking for a drop-in replacement that isn't too aggressive and have been looking at Tomei for a while now. 450 hp is my future goal btw.

2) Are different springs/retainers required with the cams?
Modified by Darius at 8:26 AM 6/12/2006

[Kansei240sx]

Tomei intake like snapping clean in half.

\

This is after finger tightening the caps ontop of the intake cam in proper order.

[Carl H]

tomei cams are teh pwnz, i loved mine...fwiw tomei uses new nissan billets, so if there was a fault in the billet it was nissans fault.you have to be careful about putting cams in, it has to be just right else it will bind and snap.

[Kansei240sx]

True that bro. We got another one from the place we got it from, luckily the cam has a 1 year warranty.

[Darius]

Was that the shop's warranty or Tomei's warranty on the cam?

[kouki-gymkhana]

That's exactly what my intake cam looks like! So I could go with 260s then without any additional mods? From reading through skylinesdownunder.com, it's the lift that makes the most difference in power with these motors. Feel free to correct me.

Darius, our power goals are the same but my I'm not going to go with a big turbo and standalone for awhile. It would be nice to just get the cams out of the way now since I have this opportunity. Yes, I know you don't NEED cams for that power level but my power goals may change as my project budget increases in the next year or two.

[kouki-gymkhana]

Yellow4G63, what mods to the head did you have to make to fit those cams? I don't want to have to change the springs or retainers or have to machine the head or change the pistons to clear the valves by going with high lift cams. What's the maximum lift one can use on the stock head? 8.5mm? 9.15mm? 9.5mm? Anyone else have any thoughts or experience?

[Carl H]

8.9 is the highest lift tomei makes in lash style cams so technicaly a 9mm lift cam will work but that sob will be nearly scraping the head, i know my 8.9's barely clear.i would reccomend uprated springs for anyone venturing higher than stock redline, especialy on a rb25.the rb20 can hold its own with a raised redline due to the 7.8k redline from factory but 8.5 is pushing it then...

[Rbpowerd240]

Tomei intake like snapping clean in half.

\

This is after finger tightening the caps ontop of the intake cam in proper order.

those are my broken cams, and that is the exhaust cams. Not intake.. Now my car shall be the lag master 5000 champion's edition

[sil820]

OMFG!! same thing happened 2 me! how did you get a new cam.. ive been trying to find one locally.. who did the warranty for you? do you go through tomei direct? crap...im soo depressed after my cam snapped i just want to put the stocks back in and sell the car...ehhh

[kjlindgr]

Here are some of Tomei's crazier cams I have on my engine. They are 280 degree, 11.5mm lift. You need custom lifters and have to machine the head for the lobe travel. I can't wait to hear that these will sound like:

[Kansei240sx]

jesus christ.

That looks like blood, lol. Your head is bleeding!

[takaramotors]

the stock cams are good

[Carl H]

the stock cams are good

rb25 eh tru to an extent, cam gear on the exh makes powah.rb20 well it needs all the help it can get, and the car wakes up with cams...

[kjlindgr]

jesus christ.

That looks like blood, lol. Your head is bleeding!

It's just your typical Clevite assembly lube.

[takaramotors]

we have a set of stock cams and they are good

[Yellow4g63]

those are my broken cams, and that is the exhaust cams. Not intake.. Now my car shall be the lag master 5000 champion's edition

If you have a stock RB20 cams you can send them to web cam and have them make a custom grind on it for you. There doing one for me on my SR20VE motor right now

[USsil80]

sr20ve..... lucky... RWD mybe???

[Kansei240sx]

sr20ve..... lucky... RWD mybe???

nope, FWD

[Yellow4g63]

yup fwd to get me from A to B and hit Mad VtEk Yo lol.

[sil_eightyRPS13]

i go

Here are some of Tomei's crazier cams I have on my engine. They are 280 degree, 11.5mm lift. You need custom lifters and have to machine the head for the lobe travel. I can't wait to hear that these will sound like:

i have those... they sound rediculous!!!!haha sounds like a stock car at idle....i love it!!!!

[v kush]

ok to answer ur question anyhting above a 8.5 valve lash ur ganna have to upgrade the valves it doesnt matter what degree they are that has nuthing to do with the lift and clearance its just how long the valves are open for u can run a 280-8.5mm on a stock head but u cant run a 260-9.25mm 270-10.25mm
i run tomei's 270-8.5mm poncams on a stock rb20 head and it can hold 8k rev down the freeway all day long

[Darius]

Correction: You don't need to change the valves to run higher lift cams. Nor is the highest lift you can run 8.5mm on stock valves. Many have taken the time to machine out reliefs in the head for taller cam lobes to pass through and have not replaced their valves in the process.

And why are you replying to a 4.5 year old post?

[RustspecS13]

It was funny Darius reading an old post of yours :P

~Alex

[v kush]

Correction: You don't need to change the valves to run higher lift cams. Nor is the highest lift you can run 8.5mm on stock valves. Many have taken the time to machine out reliefs in the head for taller cam lobes to pass through and have not replaced their valves in the process.

And why are you replying to a 4.5 year old post?

hahah my bad didnt realize it when i was on it and yea but then ur still doing work on the head witch is what people try and avoid thats why i said 8.5mm cuz they drop right in

[Darius]

It was funny Darius reading an old post of yours :P

~Alex

LMAO, what a newb! So embarassing, but hey we all have to start somewhere.