Supakat's Thread
- s14fiend
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Re: Supakat's Thread
At one part it looked like the guy could have been spraying yes you should brake boost.... @1:23 I was saying to myself you better win! lol
You have a hatch for crying out loud s13 is the lightest of the 240sx cars and with your almost ~500whp? Are you sure your maxing out in this race at your max boost pressure?
You have a hatch for crying out loud s13 is the lightest of the 240sx cars and with your almost ~500whp? Are you sure your maxing out in this race at your max boost pressure?
Re: Supakat's Thread
I know what you mean. I thought about it but then I just disregarded it. 3.9 is my fave.street_240sx wrote:supakat wrote:Yes, you can disable soft rev limit. As for power, who knows. Since I am on 3.9 gears compared to 4.10, this is the only thing on my side that is hindering me but I do not want high ratio for the street.
Yea I wouldn't want to go anything taller than 3.9 on stock trans for the streets. I run a 3.69 and its not horrible but I can cruise in 3rd everywhere
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Re: Supakat's Thread
All these runs are at 20psi. I still have another 10lbs to go. I need to hit a dyno but I really don't care for power as of right now. I am not a dyno queen or want to brag I make 500whp. If you make the power and cannot drive or use the power, then there is no point. Another issue was my rev limiter settings. I am not making any excuses. It is just a learning curve for me as of right now to find the best way to go about things.s14fiend wrote:At one part it looked like the guy could have been spraying yes you should brake boost.... @1:23 I was saying to myself you better win! lol
You have a hatch for crying out loud s13 is the lightest of the 240sx cars and with your almost ~500whp? Are you sure your maxing out in this race at your max boost pressure?
I haven't been able to play with the car until last night. Started brake boosting and flat shift rolling start. I am going to e-brake boost. Too scared of the flat shift because I don't want to break something.
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Re: Supakat's Thread
Vids look good !
1991 sil-eighty se sold
1995 bmw 540i written off
1995 pathfinder se, sold
1995 Altima gxe, sold
1995 bmw 540i written off
1995 pathfinder se, sold
1995 Altima gxe, sold
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Re: Supakat's Thread
Hey supa please tell me how your cx racing radiator has treated you i like the price tag
1991 sil-eighty se sold
1995 bmw 540i written off
1995 pathfinder se, sold
1995 Altima gxe, sold
1995 bmw 540i written off
1995 pathfinder se, sold
1995 Altima gxe, sold
Re: Supakat's Thread
Does the job. No complaints.
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- sdaigle240
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Re: Supakat's Thread
spool diff between hx35 and he351!?!?!?!??!?!?!?!??!?!?!??! thanks.
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Re: Supakat's Thread
I am spooling faster with he351 but I also switched to an equal length mani vs log.
Side note: I was helping a friend work on another ka-t with AEM EMS. I basically just needed to do some minor wiring and install the series 1 ems. After getting the car started, the motor breathes good. You can feel the car come alive. The same applies for my friend who I was helping and his s14 ka. Difference between their setups and my setup is q45 throttle body. Same cams, im, and other mods. I am going to order a flange, cut the intake manifold, and weld on flange. This is the next upgrade for the car. Can't wait to see the results.
Side note: I was helping a friend work on another ka-t with AEM EMS. I basically just needed to do some minor wiring and install the series 1 ems. After getting the car started, the motor breathes good. You can feel the car come alive. The same applies for my friend who I was helping and his s14 ka. Difference between their setups and my setup is q45 throttle body. Same cams, im, and other mods. I am going to order a flange, cut the intake manifold, and weld on flange. This is the next upgrade for the car. Can't wait to see the results.
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- aaronlee97
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Re: Supakat's Thread
Not horrible? I'm running the 3.54 on mine with stock trans and I love it! Right now I'm running a SOHC transmission so I'm not getting the full effect since the gears are slightly taller than the DOHC trans, but I do have a DOHC one coming soon. Cruising around in 3rd gear is pretty nice to me... Love the extra load to spool the turbo also. Even with my current gearing I don't hit boost until 4000rpm. Curious to see how much quicker it will spool with the DOHC trans.street_240sx wrote:Yea I wouldn't want to go anything taller than 3.9 on stock trans for the streets. I run a 3.69 and its not horrible but I can cruise in 3rd everywheresupakat wrote:Yes, you can disable soft rev limit. As for power, who knows. Since I am on 3.9 gears compared to 4.10, this is the only thing on my side that is hindering me but I do not want high ratio for the street.
Re: Supakat's Thread
Near future upgrade. I installed an AEM EMS Series 1 on another ka-t last week. Has similar setup to mine and as soon as your blip the throttle, it revs up. Same applies for my boys s14 ka-t. Only difference is q45 tb. Hopefully can be installed soon.
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Re: Supakat's Thread
Better pic for you guys...
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Re: Supakat's Thread
I have a godspeed intake I was thinking about cutting the flange for a q45 tb to match the 3" piping I'm making better.looking forward to seeing your results on it.
New turbo setup build in progress-11mm headstuds/cometic head gasket/jwt cam gears added,prec. 6266,gato mani,prec.46mm wg,bigger fmic,mspnp2,z32 trans,spec twin,q45 rear,full energy bushings. Still need injectors,and a few other small things
Old setup-ka24de-wiseco 9:1 pistons,eagle rods,arp studs,jwt s1 cams,brian crower springs and retainers,jgs log mani,t3 57trim .63 a/r,tomei 740cc,38mm turbonetics evolution wastegate,synapse bov,ebay fmic,nistune,j30 lsd.5 speed swap,z32 brakes F&R.
Old setup-ka24de-wiseco 9:1 pistons,eagle rods,arp studs,jwt s1 cams,brian crower springs and retainers,jgs log mani,t3 57trim .63 a/r,tomei 740cc,38mm turbonetics evolution wastegate,synapse bov,ebay fmic,nistune,j30 lsd.5 speed swap,z32 brakes F&R.
- shift_down
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Re: Supakat's Thread
That comparison pic really brought things into perspective. I didn't realize the size difference. Can't wait to see this in action.
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Re: Supakat's Thread
Here is how my bro in law cut it for me. I was busy rubbing down a ski.arob987 wrote:I have a godspeed intake I was thinking about cutting the flange for a q45 tb to match the 3" piping I'm making better.looking forward to seeing your results on it.
My work, then my boy painted it.
Had this blue but ran out of paint.
Base coat.
Clear
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Re: Supakat's Thread
Me too. I just want to be able to get more area under the curve downlow. My tq really died when I swapped intake mani's but works well on top. (shorter runner length)shift_down wrote:That comparison pic really brought things into perspective. I didn't realize the size difference. Can't wait to see this in action.
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Re: Supakat's Thread
Got my manifold back. Just waiting on coupler to arrive.
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Re: Supakat's Thread
I'm curious to see the difference it makes on your car. My car made right at about 700hp with a stock Intake and stock throttle body on 30 psi. I just installed an xcessive intake and a rx8 drive by wire throttle body, it's 75mm. I didn't want to go to big. I'm not convinced that our motors need that big of a throttle body to make power. But that's why I can't wait to see your results. I'm about to dyno mine soon with the new setup so we'll see . I have my old graph and I'll compare it to the new one. I love reading about the progress on your car,good job.
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Arias 8:8:1 .20 over
K1 rods
Arp head,main,rod studs
Kelford 272's,dual valve springs
Precision 6262sp .82a/r, peakboost manifold
Cxracing fmic
Fuel injector development 2000cc
Proefi pro128, e85 flex fuel
Rb25 flywheel, dxd 350z clutch
Re: Supakat's Thread
Thank you sir. Your setup makes nasty power. Keep it up.
I am curious as well. I opted for the tb not for high horsepower but for quicker response/spool. I feel that the car chokes until boost kicks in/force fed. With smaller turbo's, it is not that prevalent since boost is around 3k on t25. Like I stated on two other ka's with q45 tb and similar specs, their motor's woke up as soon as you blipped the throttle.
I am curious as well. I opted for the tb not for high horsepower but for quicker response/spool. I feel that the car chokes until boost kicks in/force fed. With smaller turbo's, it is not that prevalent since boost is around 3k on t25. Like I stated on two other ka's with q45 tb and similar specs, their motor's woke up as soon as you blipped the throttle.
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Re: Supakat's Thread
that fast response from blipping the throttle on those other KAs, sounds more to do with tuning and injector size maybe, I know the TB will help your setup, but larger throttle bodies tend to respond to higher RPMs, that's where their difference is made.
Daily Driver: 2010 Toyota Tundra CrewMax 5.7 TRD
Project and DD: 1995 Nissan 240sx Frankenstein
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Project and DD: 1995 Nissan 240sx Frankenstein
I live and breathe physics, mechanics, motorsports!!
My build thread viewtopic.php?f=40&t=60602
Re: Supakat's Thread
The last ka-t I messed with just had a base tune loaded with aem series 1. It was running rich as hell and still ran up to 3k with a blip of the throttle. I have quoted this before and will always do. Vinny Ten said "You must $--h!--!!t out what you eat..." Meaning if you have a 3 inch intake, make sure you have a 3 inch exhaust or else choking the motor. Now vice versa, it may not seem that prevalent but what drives turbo's? Airflow. So if you have a bottle neck, it will not let air flow like it should. I have cams, port and polish, etc. and I know how my engine feels. I am doing this for throttle response and spool. You can force air into any motor to make power, but optimizing air flow/fluid dynamics is another thing.
Once you have good air flow and fuel, the motor will become a beast. I lost tq when I switched intake manifolds due to the runner length. So why is this. Is this due to volume or velocity? I think it is both but more less volume. Longer runners hold more volume naturally than shorty runners. Now, with the same manifold and bigger tb, the volume will be the same but the bigger tb will allow more new volume to enter the manifold in order to keep up with the draw of the cams in non boost scenarios. Of course it will help in boost situations but I am not concerned about this right now cause it is a beast on top. I know from 40 mph in second, I have a 2 second lag until boost comes on. If I brake boost, no issues and it gets squirrelly.
As you can see, this upgrade is for response and to get more area under the curve although I never dyno tested it. When I do a virtual dyno log and it shows more area under the curve as well as butt dyno, I will be happy. Today, I should get my coupler and get to bolt everything on. Hopefully, I can go for a cruise to do some light tuning and get the vac/cruise map squared away.
Once you have good air flow and fuel, the motor will become a beast. I lost tq when I switched intake manifolds due to the runner length. So why is this. Is this due to volume or velocity? I think it is both but more less volume. Longer runners hold more volume naturally than shorty runners. Now, with the same manifold and bigger tb, the volume will be the same but the bigger tb will allow more new volume to enter the manifold in order to keep up with the draw of the cams in non boost scenarios. Of course it will help in boost situations but I am not concerned about this right now cause it is a beast on top. I know from 40 mph in second, I have a 2 second lag until boost comes on. If I brake boost, no issues and it gets squirrelly.
As you can see, this upgrade is for response and to get more area under the curve although I never dyno tested it. When I do a virtual dyno log and it shows more area under the curve as well as butt dyno, I will be happy. Today, I should get my coupler and get to bolt everything on. Hopefully, I can go for a cruise to do some light tuning and get the vac/cruise map squared away.
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Re: Supakat's Thread
Got everything installed last night except for a clamp. Will go to home depot racing store to get that later today. But the line up and hood clearance is great. I was gonna turn her on last night but the battery was dead. I charged it while the wife and I went to the gym but by the time we got back, it was too late to start. Did not want the neighbors to get mad. I also turned the TB to have the linkage on the inside of the im. I just used an l bracket to make it. I will clean it up and bedline once I make it pretty.
Here is how she sits right now.
Here is how she sits right now.
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Re: Supakat's Thread
I like the look of that intake manifold!
I noticed you have a catch can.. Where did you get yours and how is yours routed? Valve cover and pcv to those top ports then clean air before turbo or just vented? I've researched it quite a bit but I'm not sure where to get one and what is the best way to route these things, since it seems like everyone has different opinions on that.
I noticed you have a catch can.. Where did you get yours and how is yours routed? Valve cover and pcv to those top ports then clean air before turbo or just vented? I've researched it quite a bit but I'm not sure where to get one and what is the best way to route these things, since it seems like everyone has different opinions on that.
Re: Supakat's Thread
Ebay catch can and I use to have it routed like this:
From crank/breather separator to can. From can to pre turbo intake. Valve cover open. When boost would kick it, it would pull air from can and can would pull air from crank. Fresh air would be coming in from vc.
I noticed I was losing butt dyno power with intake tube connected to turbo so I scratched that setup. I have it vented now. I would like to do this.
https://www.youtube.com/watch?v=wGrx2rvIxJ0
From crank/breather separator to can. From can to pre turbo intake. Valve cover open. When boost would kick it, it would pull air from can and can would pull air from crank. Fresh air would be coming in from vc.
I noticed I was losing butt dyno power with intake tube connected to turbo so I scratched that setup. I have it vented now. I would like to do this.
https://www.youtube.com/watch?v=wGrx2rvIxJ0
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13.1 @ 114 - 2.3 60ft - 8/2012
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Re: Supakat's Thread
Results: Hear turbo spooling sooner; as soon as throttle opened, turbo starts to suck drastically; low speed drivability is better, much more response; like a beast on top. Great upgrade for a junkyard part.
Did a little tuning today with good results.
https://www.youtube.com/watch?v=ln8feE7Se9U
https://scontent-a-mia.xx.fbcdn.net/hph ... 4878_n.jpg
Did a little tuning today with good results.
https://www.youtube.com/watch?v=ln8feE7Se9U
https://scontent-a-mia.xx.fbcdn.net/hph ... 4878_n.jpg
12.96 @ 116.36 - 2.1 60ft - 11/2011
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Re: Supakat's Thread
12.96 @ 116.36 - 2.1 60ft - 11/2011
13.1 @ 114 - 2.3 60ft - 8/2012
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Re: Supakat's Thread
Was messing around the other night. I kept blowing couplers off and did not know why. Until Friday morning when I could investigate, I was hitting 33 psi which is my boost cut which then pointed me towards my wastegate. My wastegate line touched the downpipe and melted hence not opening under boost. Fixed that Friday afternoon.
https://www.youtube.com/watch?v=Jr-jnt0 ... EnZcrlmaMA
https://www.youtube.com/watch?v=Jr-jnt0 ... EnZcrlmaMA
12.96 @ 116.36 - 2.1 60ft - 11/2011
13.1 @ 114 - 2.3 60ft - 8/2012
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Re: Supakat's Thread
Hmm. You're making me consider working some sort of hard lines for my wastegate/boost lines...
Car sounds great
Car sounds great
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Re: Supakat's Thread
If your gate has 10mm x1.0 machine threads you can get an 10mmx1.0 to -4 an adapter....
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Re: Supakat's Thread
I am considering the same thing!airman wrote:Hmm. You're making me consider working some sort of hard lines for my wastegate/boost lines...
Car sounds great
Daily Driver: 2010 Toyota Tundra CrewMax 5.7 TRD
Project and DD: 1995 Nissan 240sx Frankenstein
I live and breathe physics, mechanics, motorsports!!
My build thread viewtopic.php?f=40&t=60602
Project and DD: 1995 Nissan 240sx Frankenstein
I live and breathe physics, mechanics, motorsports!!
My build thread viewtopic.php?f=40&t=60602
Re: Supakat's Thread
why not use silicone vacuum hoses instead of the regular vacuum hose that will melt. i get my silicone hoses frm this guys. 4mm is the common size for wastegates. http://www.boostcontroller.com/index.php?category=8