kickerfox wrote:
Wow that's a lot.
Sorry!
I'm very serious about this build, but my automotive experience is limited. I'm trying to keep my questions limited so as not to bother, but I'm so very green to all this. I plan to run the engine stock for a time just to get the car on the ground, but I want to be sure I nab the correct platform for future modding.
kickerfox wrote:
I'll also have drive-by-wire but I'm using the RX8's throttle body. The RX8 reluctor wheel was put on the Isuzu crank pulley. The RX8 ECU is responsible for throttle, idle control, cruise, and traction control.
Oh, I seem to remember you tinkering with a 65mm Ford V8 TB -- but now I see it's b/c you read that the 8's was 75mm, then discovered it's only 70mm. Was the RX8's reluctor chosen for better compatibility with the 8's ECU? Choice of TB is a little over my head atm, but thanks for the confirmation!
kickerfox wrote:
If I were you I'd stick with the '98 cable throttle body and '98 ECU then add an AEM FIC-8 piggyback because it has frequency based MAF control and a boost controller. That's the best bang for the buck IF you need to retain OBDII.
Thanks for the advice! OBDII retention sounds like a good idea for a daily driver.
kickerfox wrote:
Any aftermarket ECU can work with the stock Isuzu crank and cam pulses.
So the ECU reads pulses from the ESS (engine speed sensor?)
and the CPS (camshaft position sensor?) to control ignition?
kickerfox wrote:
I forget which water pump I used. I think it was actually the oil pump that had a change in '04? to provide more volume to the heads. The '98 pumps will be fine.
Oil pump! That's what I meant. The '04 oil pump swap is just an experiment, then?
kickerfox wrote:
The AN oil adapter was to eliminate the oil filter neck. I want to run a remote filter, oil thermostat, and oil cooler.
Are these typically necessary for a turbo system, or more for telemetry/piece of mind?
kickerfox wrote:
Don't be so hard on the heads just yet.
Duly noted, thanks. Since I have no idea what I'm doing, I plan to tackle only that which is necessary for reliable power upfront. Ultimately I'd like to tackle more involved modding options when I have a more complete understanding of forced induction.
kickerfox wrote:
Not sure what trans you'll go with but check out this calculator.
http://www.teammfactory.com/gear-calculatorAwesome! Thanks.
kickerfox wrote:
Also, if you need the STEP files for the coolant flange, oil flange, or exhaust flange, let me know.
Those would be most appreciated!
kickerfox wrote:
If your serious about doing this build let me know. I'm about to have another pilot spacer made and I'll have a 2nd one made at the same time if your interested.
Hmm.. I feel the need to say - for the record - that I'm not looking to capitalize on all your hard work. I would never ask for the dimensions/specs of any custom-made part that you designed, much less the part itself. For this reason, a large part of me is taut to respectfully decline. That said, a separate part of me recognizes that if I'd managed to dig an otherwise-neglected engine out of its grave in spite of endless criticism & make it scream, I might feel proud to have inspired someone else to use it, and further to be of help. Thus, I would mercifully accept, with the condition that you would allow me to cover the cost of your spacer as well. I haven't quite decided on a transmission, however & I wouldn't want to hold you up.
I understand that you're using the AR-5 to accommodate your car's shifter position, but mating this to the 6VD1 seems to involve quite a bit of tinkering. As a first-timer, I'm inclined to opt for a (simpler) OEM option, however I'm not sure how much power the Isuzu MUA-5 can handle, whereas the AR-5 trans is track-proven to ~800hp. Let's see..
75mph @ 2750 (MUA-5) vs. 2400 (AR-5) w/ 3.91 (for example) FD. The MUA-5's 3rd gear seems a bit asymmetrically placed between 2nd & 4th, as well.
Also, the AR-5 weighs just 107lb, whereas the MUA-5 weighs damn near 250lb! Hmm..
Isuzu 6VD1 -> Isuzu 2.6L flywheel -> Firebird clutch -> Isuzu 2.6L pressure plate -> Isuzu 6DV1 bellhousing (shaved) -> Solstice/Colorado slave cylinder -> custom pilot spacer -> Miata pilot bearing -> AR-5 trans.
Forgive me for asking you to spell it out, but which parts of this arrangement would be necessary for a scratch-build, and which parts are unique to your project? Maybe it wouldn't be too difficult to use the Solstice transmission after all. Did you have to modify the 2.6L flywheel? What did you end up using for your starter?