K20 DC2 Type R Video page5


eg6-R said:
Thanks to aonghus now i have to buy a better clutch and diff and r 888s oem units dont like the torque.
Never drove a honda with torque steer til now
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Your welcome:p Hopefully the 888's will help get the power down! RS2's don't seem to be doing the job! wheel spin from a roll in 3rd:shocked:
 
where is this power comming from? :) I didnt see any info about changing cams, compression or displacement. Maybe I missed it?
 
Arv said:
where is this power comming from? :) I didnt see any info about changing cams, compression or displacement. Maybe I missed it?
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Stock internal k20a2, just bolt on parts. Really healthy engine iirc it has only 30k miles on it.
 
Will the dip in power matter in your opinion. As i dont think he will be able to launch in vtec so might hamper him some what. But im in circut racing it wont matter as he drop a gear and be higher up in the band
 
Bommel said:
Will the dip in power matter in your opinion. As i dont think he will be able to launch in vtec so might hamper him some what. But im in circut racing it wont matter as he drop a gear and be higher up in the band
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Which dip? If your referring to the slight dip before vtec we choose to put it that way in order to gain power when switching to high cam(vtec) and I say slight as while it may be evident on this dyno with it been so sensitive you cannot feel it out on the road, having it like this gives the feeling of B series transistion to high cam which IMO is nice to have in a road car, most of my customers don't like a flat change over to high cam:p We will be adjusting the map slightly when car goes drag racing to give a linear power curve something like how we mapped the car first time round when it had the 2.25 exhaust on, this should help reduce wheel spin.
The spike in power you see at 5000 rpm and then sudden drop is just due to the high power when vtec kicks in that the car climbs the front roller of dyno again this is not evident out on the road.
 
Vtec6000 said:
Which dip? If your referring to the slight dip before vtec we choose to put it that way in order to gain power when switching to high cam(vtec) and I say slight as while it may be evident on this dyno with it been so sensitive you cannot feel it out on the road, having it like this gives the feeling of B series transistion to high cam which IMO is nice to have in a road car, most of my customers don't like a flat change over to high cam:p We will be adjusting the map slightly when car goes drag racing to give a linear power curve something like how we mapped the car first time round when it had the 2.25 exhaust on, this should help reduce wheel spin.
The spike in power you see at 5000 rpm and then sudden drop is just due to the high power when vtec kicks in that the car climbs the front roller of dyno again this is not evident out on the road.
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:shocked:
Thank you for sharing. :bow:
 
Would i be right in saying on a standard map there is a dip in power before vtec anyway.
I'm sure i can feel it in my last B16A2's i remember putting it in 3rd gear at about 20mph and just before vtec you can feel a drop in power....

I'm guessing you can't feel on this engine as it is ALOT more powerful so will just pull through it.... i'm sure i remember seeing somewhere that stock map shows a drop off before vtec, something to do with safety aswell.
coulde talking complete bull but i know i can feel it. and this is 3 b16a2's i ahve had now so they can't all have been broken lol.
 
Topher-EK4 said:
Would i be right in saying on a standard map there is a dip in power before vtec anyway.
I'm sure i can feel it in my last B16A2's i remember putting it in 3rd gear at about 20mph and just before vtec you can feel a drop in power....

I'm guessing you can't feel on this engine as it is ALOT more powerful so will just pull through it.... i'm sure i remember seeing somewhere that stock map shows a drop off before vtec, something to do with safety aswell.
coulde talking complete bull but i know i can feel it. and this is 3 b16a2's i ahve had now so they can't all have been broken lol.
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With the K series yes it seems to be the case just due to the ivtec design but again it can be tuned out so the power is more linear(not to everyones liking when vtec cross over is flat)

As for your B series if the car was bog standard you probably wouldn't notice any dip prior to vtec its when you add breathing mods and the velocity of air entering and leaving your engine increases that the engine will want to switch to high cam earlier in order to take advantage of this increased air flow, where as if you were to continue a couple of hundred more rpm the profile of your low cam(out of vtec) could begin to restrict the engine resulting in torque output flatening out or dropping off hence its often the case when tuning these that we can lower the vtec point from its set point of stock ecu to take advantage of the increased air velocity and pick up some midrange power however different cams, exhausts, intakes etc all effect how your engine breaths so we can't assume the optimum vtec cross over point will always be lower in some cases it ends up been higher than the factory set point.
 
really enjoyed reading this, top work mate

when my b18 eventually pops think ill have to go K20

its such a damn good engine!

any videos?
 
no videos ,but im heading to a drag racing event in northern ireland 10th of april ,will posts up some videos after this event
 
Bit off the record... What are the dim. of the tires on those TE37? I hvae a set of TEs to sell but now... Tnx.
 
Nice build man...I use to say: If it´s not a K it has to be gay...:))
 
PowerPig said:
Bit off the record... What are the dim. of the tires on those TE37? I hvae a set of TEs to sell but now... Tnx.
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There 195 50 15. Hankook rs2s. There wil be toyo 888s ond of week.

Thanks for all the comments. Alot of money and time has gone into this car cant wait to enjoy the drag racing season in ireland this year
 
Were you at bishopscourt? Whats the next event you hope to put times down at?
 
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