Claudman Posted November 27, 2012 Author Report Share Posted November 27, 2012 Sure, these are of the inside. Not all are current since the gauges were replaced with Speedhut GPS speedo and tach and gas gauge. 2 Quote Link to comment
FricFrac Posted November 27, 2012 Report Share Posted November 27, 2012 Well, I'm looking at it like this.. the time it takes the exhaust to reach the end of the tailpipe is much longer than it would be at the end of an exhaust manifold. Also, the intake charge would take longer to travel back up, through the intercooler and into the intake, than it would if it had a shorter distance to travel. This would seem to cause much more lag than a conventional setup, since the distance was much greater. I would think it would take much longer for the turbo to spool up(in response to the demand from the accelerator pedal), and also take longer for the intake charge to get into the cylinder, know what I mean? You'd step on the loud pedal.. waiting.. waiting.. OK here we go! Air, being compressible, doesn't move instantaneously like incompressible fluids do in a hydraulic system, where if there is any change at all on one end, it doesn't matter if the distance is 5 inches or 5 miles, the other end sees the same result in the same amount of time. I'm not trying to poo-poo anybody's ideas, as this is something I would DEFINITELY like to see work in a Datsun, as the engine compartment often is lacking in room for a turbo. I'd love to try something like this out.. just trying to learn, and would like to be corrected if I'm wrong. There's no getting around the physics as you've stated. It will take longer to spool and a lot of the thermal energy (which is what spools the turbo) is also lost so you're loosing a lot of the energy you would be harnessing to power the turbo. You also have a lot more "volume" to deal with as well as other losses for the compressed air going back from the turbo to the engine which is why you don't often see this type of setup. I does, however, look pretty sweet. I really like the screamer tube setup. Nice build :) Quote Link to comment
Claudman Posted November 27, 2012 Author Report Share Posted November 27, 2012 I don't disagree in the theory of what you are saying, but you must consider the entire package and the result of that. First of all I have a VG30 with that pulls very nice as it is in a very light car. I had a Ford 2.3 liter Turbo T-bird and it was a complete slug until it came on boost, but that was a heavy car with a smaller motor. No doubt it will not build boost as fast as front mount, but the motor is strong to begin with. Second, I have a much smaller turbo than many have selected for the VG30 with a ball bearing cartridge. It will be much easier to spool a smaller turbine and build boost quickly. Third, I will be only running modest boost so it will not take long to build up to max boost. I expect 3000-3500 RPM for full boost. With my 3.9 rear end, in 5th gear at 70 I am running around 2700 RPM, so it won't be a big deal to get to boost, drop a gear and away I go. Forth, notice that the line from the compressor to the intercooler is only 2" diameter and with an air to water intercooler the internal volume is much smaller than air to air, so this should help reduce any lag in the system. And finally, I am only looking for a modest, by VG30 standards, top HP in the range of 300 or so I can get away with a smaller turbo. There are many VG30's making 400 HP plus, but this is not my goal. For every choice there is a price to pay. Going with the rear mount and smaller turbo will limit the ultimate HP, but with smart choices in the design of the system you can also limit the lag in the system. I think that 300 HP in a 510 wagon will be enough, at least for a while. 1 Quote Link to comment
Project Bandwagon Posted November 27, 2012 Report Share Posted November 27, 2012 damn! great build! good looking goon Quote Link to comment
Claudman Posted November 29, 2012 Author Report Share Posted November 29, 2012 First tune is in place and after getting the AFR's in line first power run at 3.5 lbs boost was 206 HP / 230 ft# torque. Still lots of tuning to do along with increasing the boost, but it is running. Final tune and it hit 297 HP at 10 PSIG Boost. Hit the target I was looking for. 2 Quote Link to comment
mattyhacks71 Posted November 30, 2012 Report Share Posted November 30, 2012 Christ that thing is so clean :thumbup: Quote Link to comment
fo0manchu Posted November 30, 2012 Report Share Posted November 30, 2012 videos?? That is looking pretty cool. May I ask what kind of dent that put in your wallet? And do you have an LSD to go with that power? Quote Link to comment
datsunwizard Posted November 30, 2012 Report Share Posted November 30, 2012 Very nice! What seats are those? Quote Link to comment
jrock4224 Posted November 30, 2012 Report Share Posted November 30, 2012 man that is sick .... and i agree the interior is so beautiful... u really got the full package there...... that rear trubo is sick.... probablyno ideal for us up here in washington......lol 1 Quote Link to comment
jrock4224 Posted November 30, 2012 Report Share Posted November 30, 2012 More work has been completed. The oil return pump, waste-gate and blow-off valve have been mounted. Pics as follows: sorry i must ask ... but whats that carbon fiber deck lid and wing off of that u see in this pic....i parused the other pics but never got a peek at what it is... love the blow off work too Quote Link to comment
Claudman Posted December 1, 2012 Author Report Share Posted December 1, 2012 The carbon fiber wing was on the back of a Lamborghini Gallardo. The seat are Corbeau Sport seats. 1 Quote Link to comment
Bob3 Posted December 4, 2012 Report Share Posted December 4, 2012 I LIKE IT! :w00t: Quote Link to comment
datsunwizard Posted December 4, 2012 Report Share Posted December 4, 2012 The seat are Corbeau Sport seats. Those sure look nice in there! Quote Link to comment
Claudman Posted December 18, 2013 Author Report Share Posted December 18, 2013 Just got an RX7 (84 GSL-SE) limited slip rearend to replace the open diff on the wagon. New project to get it narrowed and installed in the Wagon. Disc brakes and limited slip. 1 Quote Link to comment
Eagle_Adam Posted December 18, 2013 Report Share Posted December 18, 2013 awesome build..... im not a 510 guy, but id love to drive this goon! Quote Link to comment
datrod Posted December 19, 2013 Report Share Posted December 19, 2013 Wait just a minute while I pick my jaw up off the floor. Hott Damn. What a nice build.. 2 Quote Link to comment
Claudman Posted July 15, 2014 Author Report Share Posted July 15, 2014 Much progress has been made on the new RX7 rear and differential. I was delayed by the fact that the Mazda ratio was a 4.07 to 1, and the ratio in the stock wagon was 3.9 to 1. I was going the wrong way with the gearing and wanted something taller. After considerable searching I was able to find Mr. Ben Herne of Puddymod racing in Florida who seems to be the expert on all things to do with the Mazda differential. It turns out that the Miata MX-5 uses the same gearset as the old RX-7 and Ben had a set of 3.63 gears available. Ben sent the following pics and comments earlier tonight: The rear came out great, everything looks and feels perfect. Here are the pics of your build... This pic shows the assembly... This pic shows balancing the carrier and the ring gear, balance is about a thousands true round. This pic shows the PuddyMod solid steel sleeve being set, note the old (replaced) crush sleeve shown out front of pinion. his pic shows the backlash set at 3 to 3.5 thousands, it also shows the perfect gear to gear pattern. This pic shows the finished rear build. Note the information on the LSD. It looks great and with the mods should be good for over 350 HP. I plan to test it. At the same time John Wallum is working on narrowing the housing. It is finished and looks great as well. Can't wait to get all the parts back and assembled. Quote Link to comment
Claudman Posted September 18, 2014 Author Report Share Posted September 18, 2014 Out with the old rear axle and in with the new rear. 3 Quote Link to comment
rayven14 Posted September 18, 2014 Report Share Posted September 18, 2014 This car is so badass its stupid! 1 Quote Link to comment
Stewiefied Posted September 18, 2014 Report Share Posted September 18, 2014 wow this is awesome Quote Link to comment
mrbigtanker Posted September 18, 2014 Report Share Posted September 18, 2014 Very nice wagon.you Texas boys go all out. Quote Link to comment
510SSS Posted September 18, 2014 Report Share Posted September 18, 2014 This wagon is the sh!t, show us some video of you spoolin around town. Quote Link to comment
Claudman Posted October 9, 2015 Author Report Share Posted October 9, 2015 Been playing again on the Dyno. Boosted it to 15 PSIG and got the following results: 1 Quote Link to comment
Burabuda Posted October 10, 2015 Report Share Posted October 10, 2015 that looks laggy .... but does it feel ok when you're actually driving it cause of the vg torque? Quote Link to comment
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