Thread: Great Thread For Kelford 184c Users To Talk

I see what your thinking but I'm not sure that's the case. my. Idle has got much better since adjusting the gears on the dyno. Before the dyno I really wasn't happy w the idle. The car would die now and then just from the poor idle. But now since adj gears and re setting the idle its really not that bad. Granted I have a larger motor but I don't think its that bad. Not as bad as before

Thats the problem or postitive you are having. The larger the motor the more air speed velocity in the intake which helps the idle. So a guy with a 2.4L will have a much better idle than you.

What SR20GTi-R will be doing is making a run just on the small lobes to 7000 RPMs on 20V cams and the Kelfords and see what the power bands will look like and that will answer the question. If these 2 cams make the same WHP down low then we know the idle can be straighten out. SR20GTi-R is agreement with me on this. DERM also found that the low lobes to high lobe degrees seem to be off also. The L side cams should have a smooth idle if it makes peak WHP in the 6000-7000 RPMs range just like S# cams do.

In a few days we will know after this test is done.

I guess no matter what this is true. If the cams peak in the 6-7 range the idle deff should b smooth as silk. Interested to c the test

Keen to see the outcome of the 20v vs kelford lo
What compression are the other three running?
If the cams are design for 13:1 compression for example maybe they’ve designed the lo lobes to keep the dynamic compression to an acceptable level hence ropey idle?
I’m just speculating

Gathering more info in the next day or two and will share some thoughts/charts/ideas.

Then I will get the test bitch back up with the 20Vs for more test data.

Shout outs to my boy Cory on the #'s.

I demand vids!



Thanks for the input.......

If only he knew.

^The test from the video that sr20GTi-R showed of the idle was from a 2.0L motor with a compression of around 13:1 or :5? It seems like a lot of variables to factor in to say what causes the most lopey idle. Even with a dead on point tune, do you fill that the idle would still be bad on that setup? What are your thoughts with the idle of these cams on a bone stock VE? Worse I assume? I'm sure it's not ideal to do this, but can you do a straight drop and drive with the V2 184-C cams? S/R's a must?

http://www.youtube.com/watch?v=48WSyGA380M]

^Here is the video for people that have not seen it.

I just looked at the video and Kelford site and their description could be the reason for the rough idle....

PRODUCT DESCRIPTION
Application
NEW DESIGN SR20VE Racing Camshafts,designed for top end performance, suits 13/1 or higher compression
Does not suit stock head and manifold. SR-VE engines have poor runner speed and pretty average cylinder fill and so it is easy to 'over cam' these engines
184-C is a big cam and it suits professional race engines, Individual runner, clever exhaust header designs, professionally modified cylinder heads etc.

Obviously, I am not sure exactly what intake is on the motor and I am assuming a modified stock or N1 manifold,
Andreas, you previously mentioned low runner speed; could be the main reason perhaps???

guys this info pertains to the large side of the cam. The reason for dual lobe cams is for good idle with good mid range power and great top end hp. I will bet that the 20V cams make the same L side WHP as the Kelford L side and if this is the case there is no reason for a lopy idle. Like I said if you have low side cams making peak hp in the 6000-7000 range there should be a smooth idle

I get where you are coming from Andreas, my thinking was that the runner speed at idle was still too low with the plenum on, but I take your point...at idle, it would not need that much air...so that is strange...