94 Build... GT35R, RE Vmount and a whole lot more............ NOW WITH PISTONS!!
10-26-13, 01:56 PM
#701
Turbo Lover
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Are you still on a 3" exhaust? If so you probably want to consider going bigger for that level of power.
Also, 750cc's of 50/50 isn't enough at that power level and because it's going through the turbo first you're minimizing the cooling effect of the water by the time it reaches the motor. I'd add a additional 400CC's of water post intercooler in order to keep things happy. People have made even more power then you on 93 octane, but they've done it with 1,200+cc's of pure water.
Congrats on the awesome number though! Glad to see you're still going at it.
Also, 750cc's of 50/50 isn't enough at that power level and because it's going through the turbo first you're minimizing the cooling effect of the water by the time it reaches the motor. I'd add a additional 400CC's of water post intercooler in order to keep things happy. People have made even more power then you on 93 octane, but they've done it with 1,200+cc's of pure water.
Congrats on the awesome number though! Glad to see you're still going at it.
10-26-13, 08:59 PM
#702
Are you still on a 3" exhaust? If so you probably want to consider going bigger for that level of power.
Also, 750cc's of 50/50 isn't enough at that power level and because it's going through the turbo first you're minimizing the cooling effect of the water by the time it reaches the motor. I'd add a additional 400CC's of water post intercooler in order to keep things happy. People have made even more power then you on 93 octane, but they've done it with 1,200+cc's of pure water.
Congrats on the awesome number though! Glad to see you're still going at it.
Also, 750cc's of 50/50 isn't enough at that power level and because it's going through the turbo first you're minimizing the cooling effect of the water by the time it reaches the motor. I'd add a additional 400CC's of water post intercooler in order to keep things happy. People have made even more power then you on 93 octane, but they've done it with 1,200+cc's of pure water.
Congrats on the awesome number though! Glad to see you're still going at it.
Full 4" exhaust.
I was starting to think it wasn't quite enough too. My plan is to turn it down to 20psi on the new setup and call it good. That should be around 500whp. I considered drilling my atomizer for more flow, but I don't want to run into premature compressor wear. As such, I will be more than happy with 500whp. My mind was fixed on continuing to run 24psi, since I did with the cast wheel, and it bit me.
As far as still going at it... yep, still here. An LS3/stroker has crossed my mind a time or two. I will continue to fight the good fight though.
10-26-13, 09:35 PM
#703
XL8R, your last post reminds me to ask: were you using the stock fuel injector atomizers? (may be a dumb question)
i say run 15psi on 93 octane and enjoy the car for years to come. i'm having a blast with mine at 12psi and 380whp... 
My plan is to turn it down to 20psi on the new setup and call it good. That should be around 500whp. I considered drilling my atomizer for more flow, but I don't want to run into premature compressor wear. As such, I will be more than happy with 500whp. My mind was fixed on continuing to run 24psi, since I did with the cast wheel, and it bit me.
As far as still going at it... yep, still here. An LS3/stroker has crossed my mind a time or two. I will continue to fight the good fight though.
As far as still going at it... yep, still here. An LS3/stroker has crossed my mind a time or two. I will continue to fight the good fight though.
10-26-13, 10:01 PM
#704
LOL.. Ugh, I know buddy! Damn power bug is infectious. I have no doubts that engine would have lasted for years at my 14psi setting (430whp). I never really planned to run around at 24psi constantly. It was really just there for the "check this out" factor. Even 400whp on the street is ridiculous. I have kind of an extreme personality. I like to push the things I enjoy to the limit.
10-27-13, 12:13 AM
#707
YES... I asked Rob at Pineapple, and they do replace the atomizers in their builds. I checked when I was putting it together and they were there. Considering they were new, I didn't worry about them too much. I guess we will see if their still their...lol.
LOL.. Ugh, I know buddy! Damn power bug is infectious. I have no doubts that engine would have lasted for years at my 14psi setting (430whp). I never really planned to run around at 24psi constantly. It was really just there for the "check this out" factor. Even 400whp on the street is ridiculous. I have kind of an extreme personality. I like to push the things I enjoy to the limit.
LOL.. Ugh, I know buddy! Damn power bug is infectious. I have no doubts that engine would have lasted for years at my 14psi setting (430whp). I never really planned to run around at 24psi constantly. It was really just there for the "check this out" factor. Even 400whp on the street is ridiculous. I have kind of an extreme personality. I like to push the things I enjoy to the limit.
you military boys, you're all the same. just keep it at 14!
10-27-13, 10:31 AM
#708
This is a graph of 14psi with the billet wheel, and 14psi with the cast wheel. No other changes... I will post a comparison of the high boost run with both wheels as well. In all the confusion, I forgot to get that one.
10-27-13, 06:15 PM
#709
I would expect to see a loss of compression of a few percent or PSI due to a later intake closing event. I know there are many factors, however, in my own experience, the cranking compression a good motor with substantial porting seems to be maybe 10-->15psi less than stock ported equivalent.
Correct. Late closing timming of the intake effects compression due to reversion back up the runners. Exhaust ports dont effect compression at all. Also don't forget about your elevation plays an even bigger roll in the numbers. Your engine will make more compression near sea level.
10-29-13, 04:38 PM
#712
Yes, 427whp actually. It is good! I was pretty impressed with the entire setup really. As I learned, the hotside makes such a huge difference.
This is a graph of 14psi with the billet wheel, and 14psi with the cast wheel. No other changes... I will post a comparison of the high boost run with both wheels as well. In all the confusion, I forgot to get that one.
This is a graph of 14psi with the billet wheel, and 14psi with the cast wheel. No other changes... I will post a comparison of the high boost run with both wheels as well. In all the confusion, I forgot to get that one.
maybe you're referring to the cold side? i wasnt aware of any billet turbine wheels.
those numbers look pretty good. makes me wonder what mine would do at 14 on a dynojet. i know the .84 turbine housing is holding me back a little.
edit: also, i see you're skating right on 12.0:1 after there... brave.
10-29-13, 04:51 PM
#713
maybe you're referring to the cold side? i wasnt aware of any billet turbine wheels.
those numbers look pretty good. makes me wonder what mine would do at 14 on a dynojet. i know the .84 turbine housing is holding me back a little.
edit: also, i see you're skating right on 12.0:1 after there... brave.
those numbers look pretty good. makes me wonder what mine would do at 14 on a dynojet. i know the .84 turbine housing is holding me back a little.
edit: also, i see you're skating right on 12.0:1 after there... brave.
Yes, the AFR's were a little brave on that run.
10-30-13, 06:15 AM
#720
It would remain NA.
As I mentioned, I haven't decided yet, but I am definitely tossing it around. I really didn't expect stabs about my setup after I mentioned going V8, but maybe you were just waiting to tell me. Many people have more experience than me, so I am definitely still learning in some areas.
As far as the V8 swap goes, we shall see. I'm not deciding anytime soon as I have to move to MS in January. Just bought a house so my wife and I have lots to deal with.
10-30-13, 08:19 AM
#721
#garageguybuild
iTrader: (32)
Sorry to hear about your engine.
If you do go V8 she will fit in perfectly down south in the land of Mustangs & Camaros.
When I was at Keesler I was about the only rotary around :/
There was like only three of us Rotards in a 60 mile radius.
G/L
.
10-30-13, 11:25 AM
#723
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I thought about going the v8 route as well, but will wait to see how my rotary turns out. My goal if I went v8 would be to put ITB's on the v8, if you go v8 might as well be somewhat unique compared to all the other v8 swaps.
10-30-13, 12:19 PM
#724
AFR's were at or under 11:7 at 24psi. I did take it to a trusted tuner who tunes to those AFR's with conservative timing (13). In retrospect, I feel they are on the risky side.
It would remain NA.
As I mentioned, I haven't decided yet, but I am definitely tossing it around. I really didn't expect stabs about my setup after I mentioned going V8, but maybe you were just waiting to tell me. Many people have more experience than me, so I am definitely still learning in some areas.
It would remain NA.
As I mentioned, I haven't decided yet, but I am definitely tossing it around. I really didn't expect stabs about my setup after I mentioned going V8, but maybe you were just waiting to tell me. Many people have more experience than me, so I am definitely still learning in some areas.
i wasn't waiting to take a stab at your setup, as it looks solid and very well done. stabbing was not my intent. it is very impressive and i'd actually love to have it! my post was a little sarcastic though, because honestly, when people say "well, the rotary blew, so i'm considering going LS1" it's usually because of a desire for reliability, simplicity, and power. a slightly "lower risk" version of your setup would have all three of those things, and make more power than a lot of LS1s --and definitely be way cooler.
if it were me, i'd run 13-14 psi on 93 octane, sell the AI setup, and tune for low 11's AFRs. 400whp and relatively simple; no boring LS1 setup (the rotary FDs are becoming more rare than the v8 swapped ones!) and turn the boost down a little for track days.
also, you have a rotor tattoo'd on your arm, right?
only go to GM for their EMS sensors and their ignition coils
10-30-13, 04:05 PM
#725
Pistons are for pussy's
I really love your build man, if you decide to go V8 please just get a Corvette. Let the RX remain with what the name and car was designed in mind
93 octane and W/I is fine for 18-20 psi, i woudlnt push past that. I would stay at 18psi and call it a day or keep the AI and just mix 3 or 4 gallons of race fuel and you can shoot for 25psi.
93 octane and W/I is fine for 18-20 psi, i woudlnt push past that. I would stay at 18psi and call it a day or keep the AI and just mix 3 or 4 gallons of race fuel and you can shoot for 25psi.
Last edited by unwritten-dinasty; 10-30-13 at 04:12 PM.