Building An Rb26 For Response....

[methz]

e85 ftw

[Piggaz]

Got advised there won't be much difference if i swapped out the -5's for -7 or -9, will just waste my money since i already have the -5's in, so adding tomei cam gears, tomei poncams, arp head studs, and valve springs, hopefully after a tune it will sharpen response abit more than it is now

250 or 260 poncams?

[Wongy]

Bobby had a talk to me and advised me to get certain parts. 270 poncams 9.15 lift.

[Wongy]

Bobby had a talk to me and said in terms of the lag between -5,-7 or -9 is around about the same, not with swapping it out of I already have -5s in,he advised me to get certain parts to improve response. 270 poncams 9.15 lift piggaz

[XKLABA]

He is wrong, 270 x 9.15 will make it worse, they also don't make 270 poncams, 250 or 260 or type As whatever they are

250s might help but nothing bigger in duration

[Wongy]

Tomei Poncam ex270 9.15 Type A

[GTRNUR]

http://www.tomei-p.co.jp/_2003web-catalogue/e070_cam_RB26.html

The 270 duration cams only exist in the 10.25 and bigger procams.

[Wongy]

So this is wrong?

http://www.ebay.com.au/itm/Tomei-poncam-Nissan-skyline-rb26-r34-gtr-in-270-ex-270-9-15-lift-/180970848112

I didn't get it from this seller, just a quick google and link thats all, but did get it from a different seller on ebay.

I'm not trying to be cocky or anything, just another noob trying to learn more xD, but i'm just working off what list was given to me and what i paid for.

Thanks for the info guys, keep it coming please

[Anfanee]

-7's are quite a bit more responsive than the -5's. Though if it is worth doing a turbo swap for that difference? Probably not. I would Just throw some Tomei type A (Maybe B) into it. Give it a good tune and get used to it. The money probably isn't worth the gain for you.

[J'z-R33]

Part numbers they have listed in Ebay are for tybe B cams. which are 260 degree 9.15 lift.

http://www.tomei-p.co.jp/_2003web-catalogue/e070_cam_RB26.html

[XKLABA]

http://www.tomei-p.co.jp/_2003web-catalogue/efr-set_camshaft_rset.html

This is the tomei website, I can not find them there but do you care to have a look, I would be very suspecious of what it is you got, maybe post the part number when you receive them

[Anfanee]

OP here you go:

http://www.nengun.com/tomei/pon-camshafts-pulley-set

get them from a legit site.

[Wongy]

Just messaged bobby to double check which ones i got and will definately post up the results. but in terms of the turbo, that what i was advised that it wouldnt be worth that extra money swapping out the turbos for that little bit of response, could spend that money on something else, might end up stroking in the long run, but for now, trying to improve response bit by bit without going to the extreme for now.

Thanks for all the responses guys, alot of help and much appreciated

[XKLABA]

Yeah not worth the money it costs to change

[Wongy]

For the long run, roughly how much would it be to convert to single turbo + labour if i wanted to further down the track, considering the parts be good enough for street use, and would i have to change the parts i'm putting in now to suit the single turbo?

Thanks

[Anfanee]

Why would you want to go a single? Keep twins.

Edited February 17, 2014 by Anfanee

[Wongy]

So there's not much more i can do other than stroking to further improve my response im guessing?

[Anfanee]

Twins are more responsive than singles. Most of the time.

And no there isn't really. not without spending what you just did on the car to the motor.

[Piggaz]

How big is your exhaust?

[JimmyRickard]

I recently got my car tuned with 'response' in mind.

I have -7's, ID2000's on pump 98 and stock internals, and this was the result:

Does this graph represent a "responsive" engine? Certainly feels responsive, as in there is very little lag when going full tilt.

Obviously it has a long way to go as far as HP is concerned, but would that response be sacrificed if boost pressure was increased?