how is it overcamming its a stock bottome end but thats about it... shaved head for higher compression...
term "overcamming" depicts a scenario where the combination of cam duration and overlap is too big for an engine and WILL lose power over a significant range versus a marginal gain maybe up top, in the case of Toda Cs having power up high and on a 10:4:1 static CR motor, for all you know the dynamic CR is probably 7 or 8:1.
its because when the duration is too big, the inlet valves are open at the same time as the exhaust (overlap) on the intake and combustion stroke, therefore instead of the combustion chamber being able to compress a sufficient amount of air/fuel mixture, it's actually already coming out your exhaust un-ignited (loss of cylinder pressure). thats why higher duration moves the power band to the top end its because everything is opening and closing faster.. but i bet your engine is idle-ing real rough right now too...
Theres a reason Toda Cs are marketed as a full build race cam only.. i have no idea who suggested for you to get them on a stock block/head as bigger is not better when it comes to NA modifications.
personally if i had the money for a full build i'd probably do Toda Cs too and make the most of the top end.. kinda no point scavenging for bottom end on a motor with a bore vs stroke ratio not designed for it. but because i'm on a budget and i am opening the engine up anyway, the performance cams of choice are a 'may as well' thing
Last edited by dsp26; 08-07-2008 at 05:46 PM.
Originally Posted by Slow96GSR
If 1 person has had bad luck with a product don’t condemn it until you yourself have tested it. Now if 10 pros have tried it and it sucked then I would trust their opinion.
heres where your wrong.... toda spec c's versus stock cams on my motor... the toda spec c's gained power everywhere.... wasnt worse at any bit of the rpm range.... 25kw peak power gain might i add
my engine idle? idles perfect mate very steady nicely tuned idles at 900rpms smoothly
toda spec c's arent a race only cam... the toda spec d's are... toda spec c's are unbelieveably streetable... if you drive my car you will know it has more torque then a b18c. i chose not to port my head so the car is still very streetable and it didnt loose any low down power... so in this case i think it was the right thing to do
i think adrian from toda is more educated on this stuff then you are youve never had spec c's in your car so you dnt know how they behave so what makes you think it was a stupid decision?
Yeh me and my mate was watching that night when you ran 15's all day long... Your burn-outs on the rev limiter was good.. dont see how you were gettin 2.8 60fters
I also heard that the car was cammed up with some headwork... my first impression was its a poor effort with that much work done to it.. stock EK4's are doing flat 15's
i ran toda c2 on my stock itr bottomend and tuned all i can say it, that it ran worse and less power then a stock itr cam...dont know how u made the power with the 10 cr....the response was shit
JDMYard Eg civic lsvtec 1.04:1 WAKEFIELD PARK
Bel Garage Dc2r/Neptune ecu
SUPERLAP 2010 clubsprint FF na winner
1.54.81 street tyre
i agree with the above 2. i do have experience with big duration cams on toyotas and nissans and know the effects, however thats irrelevant as simple physics contradict what you say and we all already know what effects big duration has on an engine despite the advantage of vtec.
sooo... my question is since this is already off topic... despite your many mentions of Adrian/Toda.. he had nothing to do with your car did he? coz i do agree that mr Toda would know about these a lot more than us therefore i'd actually like full details of your car from him if he did...
oh.. and who was your tuner?
Originally Posted by Slow96GSR
If 1 person has had bad luck with a product don’t condemn it until you yourself have tested it. Now if 10 pros have tried it and it sucked then I would trust their opinion.
Yeh me and my mate was watching that night when you ran 15's all day long... Your burn-outs on the rev limiter was good.. dont see how you were gettin 2.8 60fters
I also heard that the car was cammed up with some headwork... my first impression was its a poor effort with that much work done to it.. stock EK4's are doing flat 15's
yep 15.0 , 15.1 and 15.2 all with 2.7 and 2.8 sixxty feet
i agree with the above 2. i do have experience with big duration cams on toyotas and nissans and know the effects, however thats irrelevant as simple physics contradict what you say and we all already know what effects big duration has on an engine despite the advantage of vtec.
sooo... my question is since this is already off topic... despite your many mentions of Adrian/Toda.. he had nothing to do with your car did he? coz i do agree that mr Toda would know about these a lot more than us therefore i'd actually like full details of your car from him if he did...
oh.. and who was your tuner?
built and tuned by adrian from toda....
ive already said this car did not run worse... gains all round with a 25kw peak power gain... i dnt know what else i have to say... you can put what ever cams you want in your car... end of the day its your choice....
some of you still insist that my car ran worse and does not run how it should... please swing by my house so i can take you for a drive n well see what you think...
some of you still insist that my car ran worse and does not run how it should... please swing by my house so i can take you for a drive n well see what you think...
can i seriously volunteer?
Originally Posted by Slow96GSR
If 1 person has had bad luck with a product don’t condemn it until you yourself have tested it. Now if 10 pros have tried it and it sucked then I would trust their opinion.
ive already said this car did not run worse... gains all round with a 25kw peak power gain... i dnt know what else i have to say... you can put what ever cams you want in your car... end of the day its your choice....
So your saying your making around 115kw? that taking into consideration a b16a will make 90kw atw + 25kw as you said.
WOW big gain from JUST cams. Back it up with dyno graph. If shown ill buy myself a set of toda c's and place it in a stock b16a motor.
$1000 for 25kw is a absolute bargain. who needs turbo
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Originally Posted by delsol9000rpms
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