lets talk tomi cams

Post by **BQ.05.TD** » Fri Jul 03, 2009 9:18 pm

so i am in the market for a set of cams. and i'm in 2 minds as to what ones i should get. i don't want to go solid buckets so i have to stay under 8.8mm lift. but my question is what deg ones should i get. 256,260 or 270. and if its worth getting 8.8mm lift ones if the 8.5 will do almost the same job

my motor i get full boost just on 4k and positive pressure at 2100rpm. the main thing i want if for it to make power all the way to 7500-8000k

so if any one has tried these cams please let me know

and if any one has hook ups for them in australia

much thanks

Post by **boost_boy** » Sat Jul 04, 2009 2:32 am

BQ.05.TD wrote:so i am in the market for a set of cams. and i'm in 2 minds as to what ones i should get. i don't want to go solid buckets so i have to stay under 8.8mm lift. but my question is what deg ones should i get. 256,260 or 270. and if its worth getting 8.8mm lift ones if the 8.5 will do almost the same job

my motor i get full boost just on 4k and positive pressure at 2100rpm. the main thing i want if for it to make power all the way to 7500-8000k

so if any one has tried these cams please let me know

and if any one has hook ups for them in australia

much thanks

The 260s with an 8.5 or an 8.8mm will get the job done. The 270s will get it done as well. If your head is ported, then i'd personally say go with the 270s with an 8.8mm lift so that you'd have some headroom. If you're a drift monkey, consider the lower duration cams with a nice ballbearing turbocharger as the 256s will give you what you want much earlier in your power band. That's my $.02 on your dilemma. Good luck with whatever you choose.

Dee

Post by **D_Stirls** » Sat Jul 04, 2009 1:35 pm

What Turbo are you running?

Post by **float_6969** » Sat Jul 04, 2009 1:58 pm

The Tomei 256 PonCams are pre-indexed. This means that they already have the advance/retard needed for best power built into them, eliminating the need for adjustable cam gears. AFAIK, you'll need cam gears with any of the other cams to get the full benefit out of them.

Post by **BQ.05.TD** » Sat Jul 04, 2009 3:07 pm

boost_boy wrote: The 260s with an 8.5 or an 8.8mm will get the job done. The 270s will get it done as well. If your head is ported, then i'd personally say go with the 270s with an 8.8mm lift so that you'd have some headroom. If you're a drift monkey, consider the lower duration cams with a nice ballbearing turbocharger as the 256s will give you what you want much earlier in your power band. That's my $.02 on your dilemma. Good luck with whatever you choose.

Dee

its a front wheel drive pulsar so no drifting will be had lolits mostley used for drag and mountin work

the turbo is a gt2876r with .64 rear i would like the cams to cick in around the 3500-4000rpm range or in that to late for them. i have never had a set of after market cams.

i have a set of growley cam wheels so that is fineone more thing. how will the idol be say between the 256 and the 270s? much of a muchnes or would the idol have to be raised a few 100 rpm?

cheers guys keep them comingjustin

Post by **NUT-CSE** » Sat Jul 04, 2009 3:46 pm

Considering you have a gt2876r and adjustable cam gears i would go with the 260'/8.8 tomei cams for the mid-range they will provide.

Post by **BQ.05.TD** » Sat Jul 04, 2009 3:58 pm

i was thinking that. go for the ones in the middle. i just dont want to be dissapointed with them as there not a cheap mistake.

does any one know were i can get them from for a good price because there are a set on ebay for $820ish but with the yen the way it is i can get a set for $600 on greenline but i dont know how shipping will be

cheers

Post by **Cams** » Sat Jul 04, 2009 7:32 pm

Just wondering if this is what you need? EDIT: Doh, just noted you are also in AU. Frsport ships to Europe. They might ship to AU if you contact them.

http://enjukuracing.com/tomei-...h=203

http://www.frsport.com/Tomei-1....htmlh ... -1....html

Post by **D_Stirls** » Sat Jul 04, 2009 8:07 pm

Since you have a turbo that even garrett say is a bad combination of compressor and turbine then you need to try and increase the turbine flow. The 76mm compressor wheel in the GT2876R is too big for the small T28 rear Garrett iludes to this on their site when they say;* Best suited for unique applications such as asymmetric turbo installations* Not recommended for general performance applications

When you look at what flow the same compressor can make then look at what can be achieved with the GT3076R. The same compressor in this turbo flows 525 HP where as you would be very lucky to flow 400 HP through a T28 turbine.As of cam i would say that you should stagger you cams because of your turbo and go 260 intake and 270 on the exhaust. This isn't going to help with the choking turbine problem your going to have but it'll put more pressure on the turbine and try to increase it's flow. If you keep the turbo (and i suggest that you sell it and get either a GT2871R or a GT3071R) i would get the wastegate enlarged and get the GT3040 wastegate flap fitted which is the largest Garrett offer on a T2 turbo.

Post by **BQ.05.TD** » Sat Jul 04, 2009 9:47 pm

im not gonna be changing the turbo.i would love a 3071r or 3076 but this turbo will do wat i need it to do easy imo and every thing is made for this one. it seems to work very well on my car i like it. im only gunning for 300hp on whet ever boost setting.

i have a external gate now alsoi never hears of staggering the cams. does it work as well as u say it does?would it be worth trying the exhaust cam on the intake side like you did or just go all tomi set

Post by **meminto** » Sat Jul 04, 2009 11:00 pm

Why do they need to tomei cams specifically? Sometimes off the shelf is not necessarily the best option...

You can have a set of cams made to suit your specific application, for a similar outlay of cost. As a suggestion, have a chat to an engineer about some options available...

Post by **dash** » Sun Jul 05, 2009 2:05 am

will u even "need" cams ? 12.2 @124mph, gt28 @14psi. Seriously quick alreadyhttp://forums.nicoclub.com/zerothread/395270

Post by **dash** » Sun Jul 05, 2009 2:42 am

meminto wrote:Why do they need to tomei cams specifically? Sometimes off the shelf is not necessarily the best option...You can have a set of cams made to suit your specific application, for a similar outlay of cost. As a suggestion, have a chat to an engineer about some options available...

Why Tomei? tried and proven, can't miss. What's to question ?Regrinds are anybodys' guess. Many are not worth a 5hit. I personally wouldn't go near any regrind unless that exact item tested by an individual source.Less of a problem with oz/nz cam grinder/suppliers vs u.s.a, from my observations tho.

Lots of early dyno threads on sxoc of intake performance cam only, which is exactly what I plan. Seen a miata 1.8L pick up 40hp with hella strong torque, intake cam only.Look at all the hot performing CA18s with CA16 cam mod, some S13s in the 11s.... and thats with any old $500 turbo.I would keep duration 265Âº or lower.My build philosophy is maximizing torque from the "li'l" guy tho, not sure if a fwd would like/can use that.

Do you really 'wanna' scream the motor to 8k ?

Post by **meminto** » Sun Jul 05, 2009 5:12 pm

My point was that, although yes tomei is a tried an proven camshaft in plenty of different combinations, it is not the be all and end all...

I also wasn't talking about regrinds, sorry I should have been more specific.. I was talking about properly fabricating a cam from a piece of billet steel or similar...

Rather than have people take a stab in the dark at what cams the bloke should use, based on only really knowing two variables..

1) The detail of the turbo

2) how many revs the motor uses to boost up...

My response was more of a "think outside the square" and look at the entire picture...

Post by **BQ.05.TD** » Mon Jul 06, 2009 1:00 am

cheers for the reply guys. i want to make power all the way to red line and not die off and i want 300hp not 255. yer i knwo the turbo wont like to make power high in the revs but i know this.@meminto. i didnt even think about a custom cam untill i was talking to dale and he suggested it. im keen on the staggered cams as well but i need to send some emails of to find out who will do it etc. crower, wade etc

Post by **float_6969** » Mon Jul 06, 2009 5:56 pm

There is a company in Canada that does really good cam grinding. Colt cams is the name IIRC. You might check them out too.

Post by **sjbsuperman1425** » Mon Jul 06, 2009 7:48 pm

there was a thread awhile back talking about camshafts and such. i think it was called "is there a cam guide" or something like that.

Post by **sjbsuperman1425** » Tue Jul 07, 2009 7:00 am

zerothread?id=266149

^^heres the link

Post by **lcw1980** » Wed Jul 08, 2009 7:02 pm

anybody have the number stamped on those 256 poncams? Going to hook-up for a used set.

Post by **bentvalves** » Sat Jul 11, 2009 8:42 pm

i have a 256 poncam sitting on the bench (exhaust) I will take a look tommorow for you.

Post by **bentvalves** » Sun Jul 12, 2009 8:14 am

2585X

Post by **mbmbmb23** » Sun Jul 12, 2009 7:37 pm

http://cgi.ebay.com/ebaymotors...ories

http://cgi.ebay.com/ebaymotors...A1171
Modified by mbmbmb23 at 1:48 AM 7/13/2009

Post by **lcw1980** » Tue Jul 14, 2009 4:33 am

thanks a bunch.

ks13 wrote:i have a 256 poncam sitting on the bench (exhaust) I will take a look tommorow for you.

lets talk tomi cams

lets talk tomi cams

Re: lets talk tomi cams (BQ.05.TD)

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Re: lets talk tomi cams (BQ.05.TD)

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Re: (ks13)

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