IMO the S4's fit the powerband and range of a t3 or gt30+ based turbocharger (as it's slightly peakier than the S3's).kentuckyslider wrote:Cody, I am still considering the JWT S4 cams, but only if I can run them with stock springs? I know you are running S3's with stock everything but what about the S4's.
The RPM pickup on the dyno wasn't really following the car itself IMO. Most cars are a little off on either end.Rb25_s13 wrote:That is a really nice power band... why the drop off at 7.5k rpm? Didn't want to push it too much on the dyno?
Cody, what turbo is the 30r you speak of. And which cam (c series) would you go with if you were doing a complete head build up.codyace wrote:The JWT C series cams require springs (C1 cams with a 2871r or a 30r would be AMAZING).
Being that you can run a proper manifold with the 3071, I like the .86 housing. That, in combination with C1 cams would be incredible, have awesome midrange, and easily make 450whp+datsun2401972 wrote:Cody, what turbo is the 30r you speak of. And which cam (c series) would you go with if you were doing a complete head build up.
Certainly do. If you look at some of the US Based time attack cars (maybe not the most wild ones), you'll most of them all have 450+ whp, all using 3071 (either variant really).datsun2401972 wrote:The reason I ask is I think I want to go with a setup just a hair more radical than yours...eventually. I'll probably start with a gt2871r and then move up to a twin scroll turbo that pushes the powerband up to 8,000rpms. Think your "30r" would be the right turbo for the job?
Don't worry, when my ECU comes back with my twin launch feature, and the water injection working (I fried the diodes, hooked it up backward), there will be some fun videos. Let me just say, 400 whp with 4.60's out back is an awesome ride to 130.datsun2401972 wrote:And seriously, you should post up a vid of your car accelerating, from inside and out, to show everyone what kinda acceleration you setup can make.
Awwww, but that means I'll have to take off the head ...owell, just an excuse to put all new valvetrain in I guess!codyace wrote:Datsun: Soak them with oil first (wipe with a rag) and then clean them the next day with carb cleaner...then check how it looks. At a minimum you could bottle brush them back to shape in a hurry.
Is the bottom end in?datsun2401972 wrote:
Awwww, but that means I'll have to take off the head ...owell, just an excuse to put all new valvetrain in I guess!
Thanks for the info. So performance wise, the way the fuel is being delivered it doesn't have gains over the other. I guess I didn't properly phrase my question. But just making a guess if they can tune any of those factors then again it doesn't matter, thats why the tune is there...? Thanks again.DrifterProdigy85 wrote:Sidefeed and Topfeed refers to how the fuel enters the injectors. Sidefeed is where the injectors fit down into the rail and fuel fills the rail supplying the injector with fuel through its sides. Topfeed is where the fuel rail is hooked to the top of the injector supplying fuel from the top.JWT can tune Z32 and Cobra MAF. They can tune Topfeed and Sidefeed injectors. Low and High Impedence if i remember. JWT can do just about anything to the Nissan ECU.