Looking to upgrade my stock twins. Haven't found many resources on the best turbo upgrades and I was wondering if any of you could advise.
I'm looking to have good response for road racing, about 450 whp (more if I want to put racing gas in and turn up the boost).
Best Twin Turbo Upgrade for RB26DETT
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mattblancarte
- Posts: 1978
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mattblancarte
- Posts: 1978
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- Car: 2005 BMW M3 Comp. Coupe
Re: Best Twin Turbo Upgrade for RB26DETT (mattblancarte)
it would probably be smart to list the mods...
R32 RB26DETT Engine, R33 crank, HKS Forged pistons, R34 turbos, HKS wastegate actuators, HKS Racing Type2 BOV, Tomei Power expreme Manifolds, HKS dump pipes, Mckinney/Togue downpipe, JIC lightweight catback system, New OEM water and oil pumps, Greddy aluminum pulleys, twin Apex'i intakes, Apex'i Power FC ECU, Power Enterprises belts, NGK iridium-ix spark plugs, Nismo thermostat, Nismo fuel pressure regulator, Spearco Front mount intercooler (650hp rating),Okada projects coilpacks, Griffin aluminum radiator (dual pass), Twin 11" SPAL Push fans, HKS EVC VI Boost controller, Mckinney RB26DETT motor mounts, RB25DET tranny, Exedy twin disc clutch, custom driveshaft, Quaife helical LSD, AEM Wideband o2 sensor.
R32 RB26DETT Engine, R33 crank, HKS Forged pistons, R34 turbos, HKS wastegate actuators, HKS Racing Type2 BOV, Tomei Power expreme Manifolds, HKS dump pipes, Mckinney/Togue downpipe, JIC lightweight catback system, New OEM water and oil pumps, Greddy aluminum pulleys, twin Apex'i intakes, Apex'i Power FC ECU, Power Enterprises belts, NGK iridium-ix spark plugs, Nismo thermostat, Nismo fuel pressure regulator, Spearco Front mount intercooler (650hp rating),Okada projects coilpacks, Griffin aluminum radiator (dual pass), Twin 11" SPAL Push fans, HKS EVC VI Boost controller, Mckinney RB26DETT motor mounts, RB25DET tranny, Exedy twin disc clutch, custom driveshaft, Quaife helical LSD, AEM Wideband o2 sensor.
Re: Best Twin Turbo Upgrade for RB26DETT (mattblancarte)
http://phase2motorsports.store....html
or some GT2530's
Either way, hit up the track first. The car has plenty of power already. Anymore at this point and your not even got be able to drive it. Also your gonna want to get better tires asap.
Also don't run high boost on the turbos for too long. Their have the ceramic wheels and you'll risk destroying the turbos and possibly the motor
-Bluefire
or some GT2530's
Either way, hit up the track first. The car has plenty of power already. Anymore at this point and your not even got be able to drive it. Also your gonna want to get better tires asap.
Also don't run high boost on the turbos for too long. Their have the ceramic wheels and you'll risk destroying the turbos and possibly the motor
-Bluefire
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l0nestar
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Re: Best Twin Turbo Upgrade for RB26DETT (mattblancarte)
Wow. That is a nice laundry list of parts you have..
What group / sanctioning body are your racing with?
What group / sanctioning body are your racing with?
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mattblancarte
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Re: Best Twin Turbo Upgrade for RB26DETT (Bluefire)
Not planning on upgrading it within the next 12 months. I'm just trying to get some opinions because I plan on upgrading down the road and it's never too early to research or obsess.
I'm busy getting the car up to track spec. I'm not a professional nor do I race in leagues. Just a weekend warrior.
When I purchased the car, it was tuned to 17 psi. From what I've read this is just asking for trouble. I'm turning the boost down to 15 psi and setting the fuel cutoff at 7500rpm, then the car goes onto the dyno for a retune next friday. I'm turning the fuel cutoff down to that rpm because it has the oem oil pump. Currently having installed: tomei oil baffle, oil catch pan for the breather system, new steering rack, defi amber oil temp gauge, aem wideband sensor and gauge, and seibon carbon fiber hood.
Hoping to get somewhere in the ballpark of 350-375 whp. It'd be sweet if it goes above 400whp. The map that was just pulled off the power fc was pretty much base. Was said to have 408 WHP at 17psi... so maybe if the tune was weak I will have even more with a re-tune.
The GT looks very nice, indeed. Next year I'll begin the parts hunt for 550 whp.
I'm busy getting the car up to track spec. I'm not a professional nor do I race in leagues. Just a weekend warrior.
When I purchased the car, it was tuned to 17 psi. From what I've read this is just asking for trouble. I'm turning the boost down to 15 psi and setting the fuel cutoff at 7500rpm, then the car goes onto the dyno for a retune next friday. I'm turning the fuel cutoff down to that rpm because it has the oem oil pump. Currently having installed: tomei oil baffle, oil catch pan for the breather system, new steering rack, defi amber oil temp gauge, aem wideband sensor and gauge, and seibon carbon fiber hood.
Hoping to get somewhere in the ballpark of 350-375 whp. It'd be sweet if it goes above 400whp. The map that was just pulled off the power fc was pretty much base. Was said to have 408 WHP at 17psi... so maybe if the tune was weak I will have even more with a re-tune.
The GT looks very nice, indeed. Next year I'll begin the parts hunt for 550 whp.
Re: Best Twin Turbo Upgrade for RB26DETT (mattblancarte)
GT2860R -5 is a great bet for 550 whp and is as close to an HKS 2530 as you can get. The 2860R also comes in a -7 trim for lower spool rpm, but lower top end. 400 whp is starting to push it.
Not all R34 turbos are ceramic wheeled. I don't know offhand how to tell, but if you've got the steel wheels and ball bearings you're good to go for quite a bit of power!
Nice list of parts! I'll bet it pulls well.
Dan
Not all R34 turbos are ceramic wheeled. I don't know offhand how to tell, but if you've got the steel wheels and ball bearings you're good to go for quite a bit of power!
Nice list of parts! I'll bet it pulls well.
Dan
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rbs14kouki
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mattblancarte
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Re: (rbs14kouki)
So if I run 15 psi I should have a good number if the N1 makes 488@17. Shweet.
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l0nestar
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Re: (mattblancarte)
Just wondering, why you went with OEM water and oil pumps over N1 when you are building the car for tracking? I would have at least expected an N1 oil pump.
Also, when I asked about sanctioning bodies, like SCCA / NASA for what group you were in. I highly enjoy HPDE and road racing, but since I have a swap done, I would be put into an 'unlimited' class, that is why I was inquiring with you.
Or maybe in AZ you don't have to be a member of a club to drive on a track? Not trying to be an ***. Just wondering.
Also, when I asked about sanctioning bodies, like SCCA / NASA for what group you were in. I highly enjoy HPDE and road racing, but since I have a swap done, I would be put into an 'unlimited' class, that is why I was inquiring with you.
Or maybe in AZ you don't have to be a member of a club to drive on a track? Not trying to be an ***. Just wondering.
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mattblancarte
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Re: (l0nestar)
the swap was in when I bought the car. only has 8k miles on it and was just completed in late february 2008. I am scratching my head at a few of the decisions they made when building the motor. g-dimension in cali was the shop behind the build. I definitely plan on upgrading the oil pump down the road, but it's a brand new oem so it should last this season if I drive the car properly. I don't think I'm going to go with an N1, I plan on getting the tomei pump and custom fabricating a pan. should be a solid 3k for that lol.
i'm having to upgrade the oil system so I won't starve it on the track. it already has upgraded inserts for the oil galleries so I don't flood the head over time and with the tomei baffle and hks oil cooler I should be ok. from what i've read, the oem pump does just fine as long as you keep at or under 7500rpm, and you don't bounce the limiter like the drifting folks. i may get into that scene, but I've never tried it before so we'll see. hehe
no worries, i didn't take offense or see your question as rude at all. I'm not sure exactly what class I'll be in over time, but I know that i'll be starting in the beginner class for the first day at least because I haven't driven with NASA before. I used to drive in the B Class with the alfa club because I had been with them for a few years. I was in my old gutted 1990 integra with a solid 146whp. I will probably run in the unlimited with this car, you're right. I'm going to sign up this week and I'll tell you where they plan on putting me.
i'm having to upgrade the oil system so I won't starve it on the track. it already has upgraded inserts for the oil galleries so I don't flood the head over time and with the tomei baffle and hks oil cooler I should be ok. from what i've read, the oem pump does just fine as long as you keep at or under 7500rpm, and you don't bounce the limiter like the drifting folks. i may get into that scene, but I've never tried it before so we'll see. hehe
no worries, i didn't take offense or see your question as rude at all. I'm not sure exactly what class I'll be in over time, but I know that i'll be starting in the beginner class for the first day at least because I haven't driven with NASA before. I used to drive in the B Class with the alfa club because I had been with them for a few years. I was in my old gutted 1990 integra with a solid 146whp. I will probably run in the unlimited with this car, you're right. I'm going to sign up this week and I'll tell you where they plan on putting me.
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HxC_Nismo
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Re: (WhatsADSM)
im putting down 368rwhp @15psi on my stock twins and i just bought my hks gt2530 turbos for my rb26 so i can get closer to 500whp and then i will be good cause anymore then that my car would be strictly a drift car lmao.
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rbs14kouki
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Tofubadguy
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Re: (mattblancarte)
So what class did they put you in if ya don't mind an update to this topic? I have been thinking about this coming spring/summer and participating is some type of autocross or time attack type of thing... either with my 89' 240 with the soon to be installed RB26 w/ AWD working, or my newly acquired R32 GTR.mattblancarte wrote:the swap was in when I bought the car. only has 8k miles on it and was just completed in late february 2008. <IMG NAME="icon" SRC="http://images.nicoclub.com/forums/image ... /smile.gif" BORDER="0"> I am scratching my head at a few of the decisions they made when building the motor. g-dimension in cali was the shop behind the build. I definitely plan on upgrading the oil pump down the road, but it's a brand new oem so it should last this season if I drive the car properly. <IMG NAME="icon" SRC="http://images.nicoclub.com/forums/image ... /smile.gif" BORDER="0"> I don't think I'm going to go with an N1, I plan on getting the tomei pump and custom fabricating a pan. should be a solid 3k for that lol. <IMG NAME="icon" SRC="http://images.nicoclub.com/forums/image ... es/cry.gif" BORDER="0">
i'm having to upgrade the oil system so I won't starve it on the track. it already has upgraded inserts for the oil galleries so I don't flood the head over time and with the tomei baffle and hks oil cooler I should be ok. from what i've read, the oem pump does just fine as long as you keep at or under 7500rpm, and you don't bounce the limiter like the drifting folks. i may get into that scene, but I've never tried it before so we'll see. hehe
no worries, i didn't take offense or see your question as rude at all. I'm not sure exactly what class I'll be in over time, but I know that i'll be starting in the beginner class for the first day at least because I haven't driven with NASA before. I used to drive in the B Class with the alfa club because I had been with them for a few years. I was in my old gutted 1990 integra with a solid 146whp. I will probably run in the unlimited with this car, you're right. <IMG NAME="icon" SRC="http://images.nicoclub.com/forums/image ... /smile.gif" BORDER="0"> I'm going to sign up this week and I'll tell you where they plan on putting me.
<IMG NAME="icon" SRC="http://images.nicoclub.com/forums/image ... icon16.gif" BORDER="0">
It'd be great to know where I'd fit. The SCCA site as well as the South West/South Pacific site was imediately vague about my questions. I printed off the rules and do still need to read them when I get the time, but does anyone know off hand what I maybe getting into?Thanks
Russell
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HxC_Nismo
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Re: (StricNyne)
id say the hks gt2530's or the hks gt2540's, i had the gt2530's on my rb26 with alot of similar parts you have and i had quicker spool then my stock twins, and pulled really nice low to mid power and they still pulled nice up top. i made 515rwhp at 24psi on my rb26, and i just sold em last week lol my car was an easy low 11's possibly high 10's with a good 60' time and trap 120+mph in the 1/4 mile.
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