scia220

Ok I have a b20b longblock I just got from tigerjapanese. Im tryna decide whether or not I want all motor vtec nitrous or just non vtec turbo. I know both ways I can get 300 whp, but im trying to find the true differences between the two tq curves and where it starts making its power, peak tq, and how fast it climbs. Guessing dyno chart?? I want to be fast and still have some topend .. im truly tryna see if its possible na .. I want to be in ls1 territory lol

EsotericImage

iTrader: (8)

youll need alot more then that for the engine to hold together for 300whp.. your looking at 345ish at the crank. then


you have alot of learning to do to get up in the LS1 range..

better get to reading and saving $$

cibao2ner

nitrous is instant rise....vs turbo which is gradualy....go look for nitrous vs turbo dyno charts

scia220

Why not 300whp?? People have been running 300whp on ls and b20 reliable and im pretty knowledgeable about hondas .. and also to add to that, which would actually be faster?? Would it be turbo instead of nitrous since turbo tq number are higher??

nealnanoHX

Just do a B20 Vtec turbo. You will get 300whp on less boost with the Vtec head, get some CTR or ITR cams if you can. A standard T3T4 50-57 trim Garrett turbo, proper fuel and tuning will get you to 300whp no problem and tq should be around 260-280.

scia220

Yea that would make it easier.. but I dnt want to do b20vtec turbo, I don't want to spend the extra money for that wen I can get the same hp without vtec . But I guess my real question is, would b20 vtec be as fast as b20 turbo with the same hp

nealnanoHX

With same hp and same wight car yes but Vtec will move peak power and tq and have more rpms to play with.

00Red_SiR

The real question you need to ask yourself is do you want a potential 300whp there under your right foot all the time or only when you want it? Even if both cars make the same hp on boost and nitrous, they would be very different when nitrous isn't running.

scia220

Yea it'll be going in my del sol in the pic.. cuz I've never had dual cam vtec and I kinda want to try it if its as fast as b20 turbo

scia220

Only wen I want it.. I want na but only if its still as fast as turbo..

scia220

So would going na have good acceleration but less top end, I like top end speed of turbo and that's I want, but still have the responsiveness of na.. so if top end is not minimal vs turbo, im going na.. like a 60 roll same car same weight na vs turbo same hp, all motor will be keeping up with turbo

crvtectim

Do you know how much money it would cost to properly build an all motor B-Series that made 300whp?

TheShodan

iTrader: (14)

all depends upon the turbo used. To say you want "responsiveness" of NA and still be as powerful as a turbo car goes more in line with a car that's going to be on the circuit more, not some straight line power test. For brute force, the turbo will repeatedly do 300whp almost close to NA if you pick the correct turbo for the engine. When that pressure bottle runs low time after time after time, the turbo will just keep going..

Bottom line, is that you want all in one and you can't have it without making some serious choices.

LS AzZkIkr

I would say so with a non-vtec turbo set up over a crvtec on gas. Just be sure to get a turbo/set up well suited for what you want to do.

When it comes to nitrous, man is it fun with a big shot! But the one and only problem I have with it is how often the bottle runs out and how expensive it is now.

Given both set ups make the same HP, the non-vtec turbo car should make more low/mid range power and TQ than the crvtec on n2o. It seems that the non-vtec design keeps the HP and TQ closer to one another than vtec set ups due to the lower revving nature.

scia220

Not more turbo. B16 head, type r cams, hondata tuned 200whp nitrous 100 shot tuned

scia220

Think that helped me make a decision.. sounds like ill be going nonvtec turbo..

LS AzZkIkr

It is cheap at first. How cheap is it after 10-20 refills at $45-$65 a pop?

scia220

True.. that would really kill the wallet.. while all motor would be nice, I think turbo is probably be what I go with.. thanks for the reply

Turbo-LS

iTrader: (4)

all motor b20 is a turd unless you have work done to it. if you plan on running a stock engine then put as turbo on it. even with a vtec head its not going to make alot of power without the nos so really your comparing apples and oranges. The turbo will have power on demand that doesn run out and a nonvtec with properly sized turbo will make great torque numbers and still obtain 300whp. Otherwise is bottle refill nightmare. you can suck through a bottle of NOS in a couple min.

scia220

Wow a couple min?! I think turbo out beats nitrous then.. that really helped clear alot up for me.. thanks.. going turbo for sure.. hx35 on my b20 is gonna be the set up. Supporting mods as well of course. I thought nitrous b20 vtec would be cheaper. Guess nit

TheShodan

iTrader: (14)

As for the HX35, that's equivalent to a T3/T04E 50 "trim" 48lbs/min-50lbs/min. The turbo may be cheap, but integrating it with quality materials is NOT, unless you have fabrication resources available. In addition. If the turbo dies, you must find another one EXACTLY like the same model you have and retune. Its more expensive to fix it, than it is to find another Holset. So, although it is a viable option, Stick with the general Garrett-based solutions for better overall fitment (Garrett, Precision, Turbonetics, some Borg-Warner)

scia220

So just a 50 trim from general garret based turbos would still act exactly the same as an hx35? As long as its not laggy and has good spool time and power output capability, that would probably be the best decision then, but I have never experienced first hand a turbo like those. I have only used holset and ebay. Guess I have to re research which turbo would be best suitable for my expectations .. thanks for that