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T04z No Cam Vs Cams?

yogibear

By yogibear,
in Engines & Forced Induction

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yogibear Community Regular

yogibear

Posted
Posted

i been looking around , and cant find much info . i have access to some TOMEI PROCAM 252 degrees duration, 9.15mm lift.

ok from my understanding i will get boost a lil earlier , BUT move my power band up more? how much earlier ? and how much is my power band going to move?

my 26 has got forgied pistons but std rods and crank , and no crank collar with a n1 oil pump , so i not a big fan of reving the shit out of it .

of crouse has a pfc , injectors , etc

so what i am asking is it worth putting the cams in? i usually only rev to about 7,500. the cars used for street + drag.

thanks for any info

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

If you are only revving to 7500rpm, the T04Z really isn't the best turbo choice mate. It'll be making power to 8k without a problem... Given it's a 440rwkw odd turbo.

A GT35 would be better and would move the power band to the lower RPM in much better fashion.

Also it wouldn't require as many rev's or risk the pump given the small drive.

That said and you are determined to keep that turbo for whatever reason... Was there any head work done as part of the rebuild?

Muff Rising Star

Muff

Posted
Posted

i had the same problem using a t04z with a std capacity engine. it use to spool at 4 and pull hard till the limiter at 8.

ive changed the exhaust manifold and wastegate made bout 500rpm diferance.

im changeing the cams and gears to 264 as i dont have any head work either and am expecting about about another 300rpm response. so all in all im hoping to get the spool at about 3 and pull hard till 8.

ill keep you posted,

ps there are many guys i know that have cams and a good tune and they get 20 psi at 4000 rpm.

so it is possible.

but like they said T04z LOVES THE ERBS

yogibear Community Regular

yogibear

Posted
  • Author
Posted

its a .8 housing .

and why i was asking about cams is my mate just took a set out of his gtr and don't really want too waste money on this motor as i am building another one, so this one will be taken out of car and sold soonish.

E85 will not bring it on any faster will it?

thanks

skylinekid Proficient

skylinekid

Posted
Posted

depends on the housing you have. i have a t04z and it noses over at about 7650 and by 8 its dropping off fairly quick. difference i have cams/gears head work a 2.8lt bottom end blah blah. cam gear would defo help u can set it to come on earlier. and rev it to 8 it will be fine just dont bounce of the limiter. a mate of mine here has a standard gtr engine with just a set of cams gear and 2540's and revs it to 9 all day. once again just dont bounce it off the limter.

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