All of this turbo talk? whats the highest HP NA Rensis?
08-08-2008, 05:16 PM
#1
Registered User
Thread Starter
Join Date: Jul 2008
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
All of this turbo talk? whats the highest HP NA Rensis?
Just curious, a good reason of why I wanted a RX8 was because it WAS naturally aspirated. I own a Mr2 Turbo, and to tell you the truth. They are a pain in the ***. To deal with, to worry about, and etc. I liked the rotary because (i'm pretty mechanically inclined) they are generally very simple.
The Mr2 however, is emo as hell.
How much is to be expected from a generally bolt on RX8 make roughly? I've done a search and couldn't find anything relevant to my question. just TURBO TURBO SUPERCHARGE SUPER CHARGE on this forum.
: ) thanks
The Mr2 however, is emo as hell.
How much is to be expected from a generally bolt on RX8 make roughly? I've done a search and couldn't find anything relevant to my question. just TURBO TURBO SUPERCHARGE SUPER CHARGE on this forum.
: ) thanks
08-08-2008, 05:25 PM
#4
All Show All Go
Join Date: Dec 2007
Location: City of Angels
Posts: 217
Likes: 0
Received 0 Likes
on
0 Posts
i believe TEAMRX8 has the highest NA hp which is around 220
but i think most of his modification is custom
but i think most of his modification is custom
Last edited by Rotary__Rocket; 08-08-2008 at 05:28 PM.
08-08-2008, 05:40 PM
#5
The Local Idiot
Join Date: May 2008
Location: Big D, Texas
Posts: 406
Likes: 0
Received 0 Likes
on
0 Posts
I believe some people have gotten close to 230 (with pretty much open exhaust). Many people get to around 210-220 with a cat delete and tuning... I would say 200 is the genuinely street legal cap.
08-08-2008, 05:45 PM
#6
Registered User
Thread Starter
Join Date: Jul 2008
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
That seems about right. Thanks a bunch. The 8 still has awhile left on its warrenty, i didn't really want to bastardize it any by adding mods to it quite yet when I have a Mr2 sitting around.
Thanks for the input!
Thanks for the input!
08-10-2008, 03:40 PM
#13
Lasse wankel
Join Date: Aug 2006
Location: Stockholm,Sweden
Posts: 164
Likes: 0
Received 0 Likes
on
0 Posts
The Evolve engine was rated at 280 hp back in 1997. I think with a stand alone engine management system 6 throttle body butterflies and some streetporting at last a really innovate header would yield 300+ hp!
/Lasse
/Lasse
08-10-2008, 04:15 PM
#15
Assume a VE of 100%; then figure it out.
VE of 1; RPM at 9000; displacement at 80 cubic inches; BSFC at .60
you can play with the BSFC if you want; but since we are all guessing anyway the point is how much air can this motor move in a perfect world at redline?
08-10-2008, 07:26 PM
#18
Sounds like they had the dyno operator calibrate the machine to be overly optimistic. If you want to fudge a dyno result, you may as well just photoshop it instead of playing stupid games.
08-11-2008, 12:16 AM
#24
I think with some porting, tuning, and aggressive mods one could reach 230-rwhp but it wouldn't be too streetable.
Most people opt to go turbo/nitrous/super because it's cheaper per horsepower than going NA
Originally Posted by Kane
Sounds about right; I think that was my math on someone's tuning thread....
Assume a VE of 100%; then figure it out.
VE of 1; RPM at 9000; displacement at 80 cubic inches; BSFC at .60
you can play with the BSFC if you want; but since we are all guessing anyway the point is how much air can this motor move in a perfect world at redline?
Assume a VE of 100%; then figure it out.
VE of 1; RPM at 9000; displacement at 80 cubic inches; BSFC at .60
you can play with the BSFC if you want; but since we are all guessing anyway the point is how much air can this motor move in a perfect world at redline?
I kept the Brake Specific Fuel Consumption at .60
I increased redline to 9400rpms
Gave the motor a VE of 98%
Operating at sea level (14.7) and 85 degrees
Mass Flow Rate (MFR) is 31.09 LBS/Minuet of airflow
ROUGH estimate of crank horsepower would be around 310.9 (MFR X 10)
More likely would be around 281-bhp
I would post the math but I'm tried as it is
Also, I guess I should have prefaced this with that horsepower numbers are all relative, anyways, especially wheel-horsepower due to so many variables. I would be more interested in track times, personally.
Last edited by chickenwafer; 08-11-2008 at 12:51 AM.
08-11-2008, 01:37 AM
#25
3-wheeler
Join Date: Dec 2005
Location: Phoenix
Posts: 2,734
Likes: 0
Received 0 Likes
on
0 Posts
At least with regards to the accessport, there hasn't been any attempts to mess with timing. I'm looking to get some dyno time as soon as the weather here in Phoenix cools down.
I would really like to see 220whp N/A with intake, full exhaust, and ignition coil upgrades. I have smaller stuff like the agency power pulley and lightweight
alternator and water pump pulleys as well.Anyway, it's all talk at this point but once I have some hard numbers I'll be eager to share them.