2.0 or 2.3 for highway runs?
Jun 4, 2006, 04:07 PM
#31
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Go ask Sean Ivey what motor he runs 
.
2.1L + 10:1 is very possible with boost. With that high of a compression you don't NEED crazy boost. For example:
1.) The 2.1L already has more displacement than a 2.0L. So boost for boost, compression ratio vs. compression ratio, the 2.1L will outflow the 2.0L given the same turbo and relatively same sized head/head ports.
2.) Now given that info, raise the compression and you dont HAVE to run high boost, you can make relatively the same kind of power on lower boost.
3.) Given the rod anglularity of a 2.1L *longer rod, "shorter piston"* you can rev it higher without problems of the piston getting stuck on the bottom "skirt" of the block -problems 2.3L have. Also if you deck the head and place the proper headgasket, your chances of the piston hitting the valves is nearly extinct.
Now take that 2.1L with 10.0:1 c/r and put a HIGH flowing head and you have practically a Honda on steroids. Tell me how 2.1L + 10.0:1 c/r isn't efficient.
Also, I understand your POV in that, that high of a compression ratio will not work well with pump gas and it'll detonate/preignite, but with the proper fueling and tuning it's very possible to run daily.
.2.1L + 10:1 is very possible with boost. With that high of a compression you don't NEED crazy boost. For example:
1.) The 2.1L already has more displacement than a 2.0L. So boost for boost, compression ratio vs. compression ratio, the 2.1L will outflow the 2.0L given the same turbo and relatively same sized head/head ports.
2.) Now given that info, raise the compression and you dont HAVE to run high boost, you can make relatively the same kind of power on lower boost.
3.) Given the rod anglularity of a 2.1L *longer rod, "shorter piston"* you can rev it higher without problems of the piston getting stuck on the bottom "skirt" of the block -problems 2.3L have. Also if you deck the head and place the proper headgasket, your chances of the piston hitting the valves is nearly extinct.
Now take that 2.1L with 10.0:1 c/r and put a HIGH flowing head and you have practically a Honda on steroids. Tell me how 2.1L + 10.0:1 c/r isn't efficient.
Also, I understand your POV in that, that high of a compression ratio will not work well with pump gas and it'll detonate/preignite, but with the proper fueling and tuning it's very possible to run daily.
Last edited by inco9nito99; Jun 4, 2006 at 04:09 PM.
Jun 4, 2006, 04:09 PM
#32
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Originally Posted by Ted B
But how is that octane rating obtained? Be careful, as I'll bet it isn't the same. 98 pump octane in Europe is less than 98 pump octane in the U.S., and it is different elsewhere as well.
The U.S. pump octane is obtained this way:
Research Octane + Motor Octane / 2.
Taiwan may very well rate it differently (e.g. Research octane only), so do not automatically assume that 98 octane in Taiwan is the same as the 98 octane in the U.S.
From Answers.com:
"In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "normal" gasoline in the US and Canada, would be 91 in Europe."
Chances are your '98 octane' in Taiwan is the equivalent of 93 octane ('pump gas') in the U.S. Be advised!
The U.S. pump octane is obtained this way:
Research Octane + Motor Octane / 2.
Taiwan may very well rate it differently (e.g. Research octane only), so do not automatically assume that 98 octane in Taiwan is the same as the 98 octane in the U.S.
From Answers.com:
"In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "normal" gasoline in the US and Canada, would be 91 in Europe."
Chances are your '98 octane' in Taiwan is the equivalent of 93 octane ('pump gas') in the U.S. Be advised!
Jun 4, 2006, 04:22 PM
#33
Originally Posted by inco9nito99
1.) The 2.1L already has more displacement than a 2.0L. So boost for boost, compression ratio vs. compression ratio, the 2.1L will outflow the 2.0L given the same turbo and relatively same sized head/head ports.
Originally Posted by inco9nito99
2.) Now given that info, raise the compression and you dont HAVE to run high boost, you can make relatively the same kind of power on lower boost.
Originally Posted by inco9nito99
3.) Given the rod anglularity of a 2.1L *longer rod, "shorter piston . . .
Jun 4, 2006, 04:34 PM
#35
Originally Posted by Rcebowl
i think of highway being apart of street... i really dont race on the street much... too many dangers.. anyways... look at Chris with his black evo .. most of his races go past 120mph and thus past'd 4th and into 5th and it does AWESOME on highways..
Originally Posted by Rcebowl
but after 600+whp longer gears are better imo...
Originally Posted by Rcebowl
imo a 2.3 is a much better street/highway and daily car... and 2.0 is a much better drag car
Originally Posted by Rcebowl
now the 2.1 i know a lot less about.. why is there a big push for 2.1 all of a sudden? the 2.1 are 4g63's with the 4g64 crank? ... how would a longer stroke be good for rev's?
Jun 4, 2006, 09:50 PM
#38
I know 98 octane here is the same as 93 octane in the US 
Besides myself there are quite a few people boosting 2 bar on pump gas. AFAIK im the only person running meth in this country....also race gas is illegal here.
The stock tranny should be fine shifting at 8k I hope since I dont plan on going higher than that anyways...
Besides myself there are quite a few people boosting 2 bar on pump gas. AFAIK im the only person running meth in this country....also race gas is illegal here. The stock tranny should be fine shifting at 8k I hope since I dont plan on going higher than that anyways...
Jun 4, 2006, 09:51 PM
#39
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I think the rod length of the 2.1L is 162mm. That is 12mm longer than the stock rod which is 150mm. Or do I have the stock rod length wrong?
link to SBR site for the 2.1L destroker kit
http://www.slowboyracing.com/shop.ph...74ed55cfff34e5
link to SBR site for the 2.1L destroker kit
http://www.slowboyracing.com/shop.ph...74ed55cfff34e5
Jun 5, 2006, 01:12 AM
#40
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Originally Posted by Derek888
I know 98 octane here is the same as 93 octane in the US Besides myself there are quite a few people boosting 2 bar on pump gas. AFAIK im the only person running meth in this country....also race gas is illegal here.
The stock tranny should be fine shifting at 8k I hope since I dont plan on going higher than that anyways...
Besides myself there are quite a few people boosting 2 bar on pump gas. AFAIK im the only person running meth in this country....also race gas is illegal here. The stock tranny should be fine shifting at 8k I hope since I dont plan on going higher than that anyways...
Jun 6, 2006, 08:03 AM
#44
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I think its a no brainer... 2.3L. We're talking about highway runs and what better example to go buy than the black AMS EVO? GT35R, 2.3, 8k redline (not too crazy) and you saw what it could do.
Take it a step further and add the ShepRacing 4.11 final drive upgrade (made specifically for strokers) and youre all set. Even if your racing from 5k, the stroker is going to spool better and pull harder most of the way. I know a 2.3L is headed my way someday...
Take it a step further and add the ShepRacing 4.11 final drive upgrade (made specifically for strokers) and youre all set. Even if your racing from 5k, the stroker is going to spool better and pull harder most of the way. I know a 2.3L is headed my way someday...
Jun 6, 2006, 08:58 AM
#45
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with 35R turbo... hows the turbo lag comparison between 2.1\2.2\2.3L ? will it be the same ?
some say with the 2.3L it reduces the lag of about 400rpm, but will this be the same as the the other stroker ?
some say with the 2.3L it reduces the lag of about 400rpm, but will this be the same as the the other stroker ?