2912 posts
1991 240SX Coupe 1992 240SX SE Coupe 2003 SE-R Spec V
Jacksonville FL
11-18-2005
DIY Individual Throttle Body for VQ?
5:49 PM 6/8/2008
I was just thinking about making a DIY individual throttle body set up for the VQ with 1995-1999 Manima manifold.
I figured that I could use the same set up as butterfly valves inside KA24DE thottle body and use it at the entrance of each runner. All necessary vaccume plugs would be split to each runner. For IACV each runner would be connected to a small box with the IAVC attached.
What do you think?
1991 - S13 Coupe KYB AGX + Eibach ProLine $475, Strut Mount $160, ClutchKit $150, ExhaustSet $300, WaterPump $50, Radiator $99, FanCluth $45, Clutch Master $30, Brake Kit $310, Chassis $150, Anti-Theft $XXX, Audio $250, Celica Seats $200, Alternator $115, Starter $130, NISMO Wheels, Stillen Strut Bar, RedCoupe Shell $1,500 NEXT>>Bushing, LSDStatus - Running Strong. 2003 SE-R Spec-V Brakes =$150. Running Strong. 1992 S13 SE Coupe Being taken apart for VQ Swap VQ30DE $320, ECU $50, Harness $100, MAFS $50, Intake Manifold $99, Z33 6-Spd $380, Poly Mounts $125, Z33 Oil Pan $121 For Sale : FL, S13 Radiator, KA24DE, Automatic, ECU, Starter, EGR, FAN, Alternator, etc NEW LOW PRICES
637 posts
VQ35DER Powered S14.3
San Diego CA
1-5-2004
« Re: DIY Individual Throttle Body for VQ? (Soravia)
5:47 AM 6/12/2008
when some one made itbs using the butterflies in the intake, it did not turn out so well as people thought it would. It was not nearly big enough to support the displacement. it would not be that hard to make an itb setup if you had the skill. But YOU are better off buying a pre-made setup.
The new IS F gets an extensively modified version of the 5.0-liter V8 also found under the hood of the LS 600h sedan. With the help of a dual air intake system, direct sequential fuel injection, high-flow cylinder heads, titanium intake valves and fully variable valve timing (VVT-iE), the engine can churn out 416 horsepower at 6600 rpm and 371 lb-ft of torque at 5200 rpm. Secondary-intake plenum chamber flaps open at 3600 rpm, producing a loud, deep, baritone growl during full acceleration. You quickly find yourself reveling and indulging with your right foot.
1 tb for 6 cyl or 1 tb per bank of cyl, which you do think will get more air?
the NA VQ35DE rev up puts out like... 250ish to the wheels, while a VQ35HR puts out 285ish to the wheels.
yeah... I don't see that much of a difference either.. nope... no difference at all.. stop being all custom and tricked out. just use a 350z intake manifold and be happy. You do not have super computers the size of a small apartment complex figuring out what would be the best for all situations.
****, just try to get your hands on a VQ35HR upper/mid/lower intake manifold.
Isn't it the VQ37HR that puts 280+HP to the wheels?
Yes. The VQ37VHR makes ~330 hp. The new twin intake VQ35HR only makes about 15 more peak hp than the later VQ35DE. The VQ35HR's improvements were mostly in the areas of responsiveness and high-end power, not significant peak power increase. The twin intakes are partly responsible for the HR's better high-end performance, though.
Quote, originally posted by irax »
****, just try to get your hands on a VQ35HR upper/mid/lower intake manifold.
I doubt it's that simple, unfortunately. Both VQ35DE and -HR use electronic "drive-by-wire" throttles. The TPS is integrated into the throttlebody. I think you'd have a hard time getting the VQ35DE's ECM to cooperate with the VQ35HR TBs.
NEXT>>Bushing, LSDStatus - Running Strong. 
