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I can make my own thread... but what is a good resource for rewiring a car? I'd like to remove as much cruft as possible from mine, but I haven't been able to find any excellent resources specifically for rewiring a Miata.
Devious looks amazing~~ |
Originally Posted by EO2K
(Post 1163560)
My Rotrex had a BOV in front of the throttle body for the same reason a turbo has a BOV in front of the throttle body. Its the back of the manifold that has me screwed up.
The Rotrex does its best work in the upper RPM range, so spinning the hell out of it is actually beneficial provided you are under the -74's 120,000 RPM redline. The problem is that you may actually be moving more air that you want/need. You don't want to compromise things with a restrictor at the compressor, so bleeding off the air (like a wastegate bleeds off exhaust) makes some sense. You still have flat boost response at WOT and you keep the blower in its efficiency range without blowing things up. So I'm guessing its some sort of epic boost control. It's been discussed in the past, but I've not seen it implemented. I bet it'd be loud as shit. I'm probably totally wrong though :giggle: Are we threadjacking? |
Originally Posted by hornetball
(Post 1163564)
So, with a Rotrex SC, the BOV is used more or less continuously at high RPM (like a wastegate) to keep a target boost? Interesting.
I'm speculating that's what they are doing with the wastegate, its the only thing my brain can come up with. I can pretty much guarantee you that's not a production thing.
Originally Posted by hornetball
(Post 1163564)
Are we threadjacking?
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Originally Posted by EO2K
(Post 1163560)
So I'm guessing its some sort of epic boost control. It's been discussed in the past, but I've not seen it implemented. I bet it'd be loud as shit.
WG controlled by the MS3Pro. Car still has the standard recirc valve that comes with the production CARB kit. WG is there to bleed off excess boost at part throttle or at WOT when running pump gas. It's geared for max boost so probably 16-19psi. Too much for pump gas so we'll bleed off to about 10psi to keep power down. On E85, the WG stays shut. Trackdayhookey runs something similar on Mega only it has a BOV instead of a recirc. He has a C38-94 on a basically stock longblock (rods/pistons/bearings) and it wants to make 450whp on race gas. Can't put that down on track so he detunes to something like 380whp IIRC. |
I can't wait to hear the sound of this thing in full tilt.
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Wooo! Does that mean I won a ride? :naughty:
Originally Posted by cjsafski
(Post 1163575)
I can't wait to hear the sound of this thing in full tilt.
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OK, with you guys now. Missed the term "wastegate." I'm so used to wastegates on exhaust manifolds/turbine housings. LOL.
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Originally Posted by EO2K
(Post 1163581)
Wooo! Does that mean I won a ride? :naughty:
Seriously. No E85 at Laguna so I can only imagine it'll be a bit... boisterous. |
I'm curious... what exactly does that wastegate sound like when opened? I can only imagine that this car sounds like Satan himself.
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I'm guessing a giant vacuum cleaner.
But I can't wait to find out this weekend :party: |
Originally Posted by emilio700
(Post 1163591)
That would be why we're bringing a 55g drum of E85, 30g caddy and about 4 full 5g jugs.
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"Mental" "Deviate"
:rofl: |
300whp, no aero. Bit of a handful!
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Great vid.
There comes a point where you need a cage. |
Originally Posted by hornetball
(Post 1169123)
Great vid.
There comes a point where you need a cage. Just the same, this power setup will be pulled from this car for another project and it'll go back to being N/A in a few months. |
Originally Posted by emilio700
(Post 1169146)
Reality is most people who want a 300whp Miata have little interest in silly things like oil coolers, big brakes and safety equipment.
Originally Posted by emilio700
(Post 1169146)
Just the same, this power setup will be pulled from this car for another project and it'll go back to being N/A in a few months.
Now for the threadjack . . . as you know I lost my intake valves at Hallett. On teardown, the valve faces were found to be worn to the point that there was no lash. This was on a valves that were reground in July, so not that much time on them. Could a mechanical overrev cause this? Or maybe overrevs got the wear started and then the lack of good contact to the head overheated the valves? |
Originally Posted by hornetball
(Post 1169562)
:rofl:
The fact that it's so easy to go back and forth is a nice testament for the kit. Now for the threadjack . . . as you know I lost my intake valves at Hallett. On teardown, the valve faces were found to be worn to the point that there was no lash. This was on a valves that were reground in July, so not that much time on them. Could a mechanical overrev cause this? Or maybe overrevs got the wear started and then the lack of good contact to the head overheated the valves? |
I got back from a month of business travel and took Honey Badger out to the track. Did 5 30-minute sessions and pretty much passed everything (https://www.miataturbo.net/build-thr...0/). What a great combination. I'm really enjoying it. Just wanted to say thanks.
That is all. |
Very cool. These builds have such good intrinsic balance. Balance between power, brakes, predictability, responsiveness, grip, reliability, comfort. Always makes me happy to see someone enjoying it all weekend long with little more than a quick fluid level check once or twice a day.
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