Which one would be the best choice for an R with Spec Bs? Looking for 200-210whp..

 

does anyone have any contact information for the hytech headers?

 

http://www.hytechexhaust.com/

 

Some pics:
Here's my HiTech header:


Here's Lip's full drag header:

 

We have done it with the TODA B with Spoon Header 200+whp.

 

I'm sure you guys at AJ used a little more than just Toda B's and Spoon header....compression? TB overbore or Spoon 70mm tapered TB? ARC intake? headwork?

 

Yea, what else was used to achieve the following if anything?

 

i believe its with toda's valve springs, aem intake, yoshio ecu, cam gears. Just the basic things you need when you change cams.
its also nice and cool in canada too.

 

I would like to see a dyno of the two on a built motor - anyone?

 

Here's a SAE corrected TODA header dyno run on a built B18C5

 

I think this is the dyno from TODA Si from ClubSi, and this is an untuned dyno graph with spec C and TODA header!!

 

We have the following setups for the B18C5:

Spoon air filter
Spoon 4-1 header
Spoon Cam gears
Spoon 2P head gasket
Toda B cams
Toda valve springs
AJR ECU ( AJR spec programmed by Yoshio)
AJR aluminum crank pulley
AJR bore throttle body
5zigen Border speed 304 exhaust

We dynoed it for 207 whp and 134 ft/lbs of torque.

I will try to post that dynoplot as soon as I get it off from my customer.

 

I'm anxious to see the plot to compare it to a similar setup, 2001 ITR without the Spoon header (JDM 4-1 instead).

He certainly is similar with the torque, gotta work on the top end horsepower.



Please post the dyno as plot soon as you get it.

Greg

 

are the spec C's alot better then the Spec B's? I heard that in order to use spec Cs you need a test pipe? What if you had all 2.5" piping? like jdm header, high flow cat and custom exhaust..

thanks

 

Power wise, I dont think so. according to the C cams' spec it will make way more mid-range power and more constant power at the top.

 

how will it make more midrange? the spec for everything on the cams are the same as spec b's, except for the vtec lobes which are larger on the spec c's.

 

say what? the only difference between the B & C is the vtec lobe. The C will make the same midrange but with more after vtec power. You're from A&J right?

 

TODA Racing Camshaft Profiles @1mm lift

Intake Cam

<U>Primary Lobe</U>


Lift Duration open BTDC close ABDC

C 11.0 210 0 30
B 11.0 210 0 30

<U>Secondary Lobe</U>

C 11.0 210 0 30
B 11.0 210 0 30

<U>VTEC Lobe</U>

C 12.5 255 22.5 52.5
B 12.0 255 25 50

Exhaust Cam

<U>Primary Lobe</U>

C 11.0 210 30 0
B 11.0 210 30 0


<U>Secondary Lobe</U>

C 11.0 210 30 0
B 11.0 210 30 0


<U>VTEC Lobe</U>

C 12.5 255 52.5 22.5
B 12.0 245 45 20

The statement that the nonVTEC primary and secondary lobes between the Spec B & C cams is correct. Moreover the VTEC crossover point for these are both very high at around 7000-7500 rpm,.... so for street rpm ranges they are identical.

I think people have to appreciate that what is meant by race only cams is the fact that the grind here has less compromise for the idle, midrange, and emissions . The Spec B and C are actually considered as "mild" race cams. The Toda Killer cams must start to sing beyond 7000 rpm and have sero compromise for any "midrange power". When I spoke to Pierre Kleinubing up at Mosport I asked what is the lowest rpm he drops down to at say the turn 5 slow Moss corner (almost a hairpin) and he said 7000 rpm...that's the lowest...it was a very enlightening statement about the operating range these engines are intented for at full out road racing competition...saying it has great midrange does not factor into this level of racing. I'm sure Toda factored this in when they ground these mild cams and the Killer cams: driveability means a broad power band but the level of this power band is 7000-12,000 (in the case of the Killer cams...perhaps 9500 rpm with the B's and C's). This is why I grin when people say...they have great midrange.

cheers





[Modified by Michael Delaney, 1:05 PM 6/29/2001]

 

I think you need to take into account that we don't drive our cars on a race track where the Realtime cars are, so for us, midrange is important. The reason everyone likes TODA's awesome midrange is because on the street where we all drive our cars, midrange counts. No grining about that.

 

I think you misunderstood my point. The midrange comment was wrt "racing cams". The racing cam label on the Spec B and Spec C delineate the cam's operating range. Few people appreciate the consequence of such a label or what it means. Racing cams do not care about idle or the range we call midrange. I have Toda B's and appreciate their "midrange" but what you and I call midrange and what the racecar drivers call mid range is 2 totally different areas.

 

so what is considered to be midrange on the street??

4,000 to 6,000 rpms? with stock cams

5,000 to 7,000 rpms? with spec b's/c's