newtron63h

well torque is what gets the car moving.

so lets say you have an engine that has hp but little torque. that means to get any kind of decent launch you have to launch from high revs.....which is gonna do one of 2 things(as long as things dont break). spin the tires or eat up your clutch.

so lets say you have hp and torque. you can now launch from lower rpms without spinning while still getting a good launch........AND you arent doing anywhere near the damage to your clutch.

if you just put your foot on the floor then yeah itll spin the tires. but a good driver adjusts the way he drives to make the best use of what hes driving.

now i think drag racing is kinda a waste of tires and gas(although not nearly as much as drifting which is the anti-christ btw). so alot of my thinking goes towards road racing and auto-x because they require ALOT more skills to be good and adds the element of using them at the same time.

also think about this hp=(torque x rpm)/5252 so you HAVE to have torque to have HP.

imbest123

wouldnt this essentially be the same as a type-r? i know its called the "poor mans" type r but if its the same whats wrong with it? wouldnt the same apply when building a k20a3 block mated with a k20a2/z1/z3/k24a2 head?

redrocket_ej1

who bumps a 5 year old post to continue the b16 vs b18 argument?

Group Tenacity

^ LOL

got00rice

nothing wrongs with it, just posting this up so the guy who was asking would know. its the cheap version of the type r motor since not alot of people would be willing to spend money buying the original type r.

newtron63h

i say stroke a b16, gives you the better flowing head(so the rumor says) adds stroke for more torque, but its less stroke than a b18b or b18c......so your bottom end rev limits are higher. use 11:1 or so, upgrade the top end some(springs and retainers mostly.....maybe cams). turn it 9k all day. use a good quality forged stroker kit, and you should have a near bullet-proof bottom end(as long as its balanced and assembled right) and id say you are looking at probably 180-190hp at the crank combined with I/H/E. add some cam gears and a more agressive cam package and id say 200hp at the crank is definitely within view. and you now have a somewhat torquey but high revving engine thats not upgraded to within an inch of its life so it would probably make a pretty good daily driver.

imbest123

that doesnt make sense to me. wouldnt you want to destroke a bigger motor to rev higher? this is why people destroke k24s to 2.2L and rev 11,000 rpm

newtron63h

well for the most part the valvetrain is the limiting factor in how high you can rev........rev too high and you float valves. but the bottom end limits you too, especially when its an unbalanced kit. but if its balanced properly and you dont have too much stroke............the bottom end should handle quite a bit of rpms. for instance, the s2k has an 86mm stroke. which works out to a piston speed of 5077 feet per minute @ 9k. i know of a stroker kit for the b16 which increases the stroke from 3.047"(77.4mm) to 3.334"(84.68mm), and with a stroke of 3.334" you get a piston speed @9k of 5001 feet per minute. now thats an all forged, kit which then needs to be balanced. so if the balance is done properly it should have absolutely no problems running at 9k. the b16 has a short stroke to begin with(thus the pathetic 116ft/lbs of torque). so by adding some stroke, you can increase torque. by running it another 700rpms higher (anyone correct me but i think b16as redline at 8300) you have the potential of getting more hp because hp=(torque x rpm)/5252. so to have hp you need torque and rpm..............which a stroker kit should help increase both.

my guess is that the K series has a somewhat long stroke.......therefore THAT limits their rev limits before things break. by shortening their stroke, they push that limit higher in the rpm range.

imbest123

sweet i didnt know that. thanks!