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09-02-2013, 11:10 AM #31
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09-02-2013, 11:18 AM #32
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09-02-2013, 11:22 AM #33
mount something like this on top of the reed plate! ?
custom plate maybe
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09-02-2013, 11:39 AM #34
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09-02-2013, 02:30 PM #35
very hard without a measurement reference
but it should be do-able
anyway enough dreamingLast edited by PanRonnie; 09-02-2013 at 03:51 PM.
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09-02-2013, 05:30 PM #36
Liberator*21, on one hand I am reluctant to share too much info because I do not want to discourage you from trying something different. On the other hand, I hate to watch someone spend a pile of time & $$$ on something if my input might speed up your research or save you some dough. I'm no expert and can't explain the "why", but will share with you my experience with the MAD intake.
In a nutshell, the main issue I had with it was that the motor could not be tuned to run well. My use was for a racing application and I used the injection mounts on the intake with custom injectors, and Merc Drag electronics. Tried pretty much everything possible as far as tuning the ecu and manipulating physical aspects of the bleed system & intake and the end result is that there is a significant fuel/air delivery disparity between the port & starboard banks. In the end, I thought of a few ways to address the issue but decided to use a different intake rather than continue trying to fix the MAD. 4 ways come to mind that might make it work properly: 1. Run an ecu that allows adjustment to individual cylinders, 2. Run different size injectors in one bank, 3. run 2 fuel rails & 2 separate fuel regulators, and 4. try relocating injectors (300x pate or mount like a drag motor to front half).
The MAD might work fine for a lake motor, especially if individual cylinders can be tuned through the motorola ecu.
Good luck with it and I'll stay tuned to your thread!
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09-03-2013, 04:57 AM #37
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09-03-2013, 05:42 AM #38
The current candidate, 1993 200 XRI VST in it OEM form:
The pics below detail the mod that this VST went through, pretty much self explanatory. All 3 mounting ears were cut off. Bottom of tank had a fuel valve of some sort that I removed and drilled/tapped 1/4-18 NPT for the fuel out line to the EFI pump. Also cut off the 2 legs on the VST top that held the original pressure regulator. There was some sort of check valve inside the VST cover that was connected to the most fwd small top nipple (just below the needle seat when looking inside) this was drilled out and removed. The passages were also drilled out to max id's. this is now the the "Bleed Line Return" nipple. Most aft small top nipple will be the VST vent to atmosphere. The splash plate was removed to allow machining then reattached using 4-40 stainless screws. Only thing I've yet to do is remove the 5/16 fuel supply hose nipple and drill/tap to 1/8-27 NPT for an AN style fitting.
Mounting plate is on the mill next.......
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09-03-2013, 06:09 AM #39Member
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Interesting to see the atomisation of fuel problems with the MAD inlets. What ECU are you going to be using?
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09-03-2013, 07:03 AM #40
Currently going to start out with the OEM, making small changes one at a time, last thing I hope not to do is mod the ECU program (we'll see). I have the ability to adjust the TPS ratio vs Throttle opening which may compensate for some miss givings, as well as restricter plates made to restrict air and increase velocity, it's going to be a wait and see scenario and allot of testing over time. Theres no sense doing anything else until I've run out of tricks in my little black bag.................
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09-03-2013, 08:41 AM #41
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09-05-2013, 11:43 AM #42
if you get to this point without being able to work it out with the factory stuff
a Mega-squirt MS3 might be an option
i wrote the 60-6 crank wheel mod for the MS2
http://www.msextra.com/forums/viewto...?f=125&t=50520
but i was uncomfortable with the MS3 assembled code
good news is they will officially add it
just don,t know when
they will speed things up if somebody is working on an engine
you would then be able to use all your hardware without any modification ( flywheel tooth pattern, ignition coils , sensors )
for your injectors you would have to wire ballast resistors or use the low impendance driver boards
as the MS3X board does only high impendance injectors
the MS3 would give you 6*6 3 dimensional tuning tables per injector
at 645 $ this is a good option
http://www.diyautotune.com/catalog/m...led-p-435.html
water proof 1049 $
http://www.diyautotune.com/catalog/m...nly-p-539.html
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09-05-2013, 12:33 PM #43
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09-06-2013, 04:53 AM #44
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09-07-2013, 07:43 AM #45
looks great gary!! interestingly, i found the same thing w/ a big mixture distribution problem on an older style 3 litre w/ the mad intake, had to make the 1 side rich enough to live, and was never really rite. this was on the old style 3 litre/2 computer system. just keep an eye on the plugs/piston tops gary. dave just shipped the mad efi intake for my wolf engine, but i'm pretty bogged down in the gto project rite now.
action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi 113 mph the engine build http://www.screamandfly.com/showthre...-3-litre-build