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If you have a 3VZ, I need some HELP!! [Archive] - Toyota MR2 Message Board

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If you have a 3VZ, I need some HELP!! [Archive] - Toyota MR2 Message Board Toyota MR2 Message Board > Toyota Engine Clubs > V6 Owners Group > If you have a 3VZ, I need some HELP!! PDA

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Node10-27-2005, 09:59 PMIm looking at installing a megasquirt V2 on my twin turbo 5VZ-FE.

The problem is that Im currently running distributorless. My Toyota ECU manages the coil pack fireing order and dwell directly through an ignitor block. That means that the ECU has outputs for EACH coil. Obviously the MS-EMS is not capable of running my system. There are workarounds but it would be SO much easier if I could just put a distro on there.

Here is what I need. The 5VZ has 2 spots on the cyl head that were cast for a distro. BUT no 5VZ-FE I know of came with one. So, I think the 3VZ-FE distro will fit up, given I put a notch in the end of a 5VZ cam. I NEED someone to take a much of pics of a 3VZ-FE/1MZ-FE distributor input shaft OR send me an old broken 3VZ-FE distributor. A 1MZ distro may work too aswell but its less likely.

Anybody know of a blown up old camry somewhere that I can borrow parts off of to see if they are compatible?

Any help will be MOST appreciated.

Jim Weasy2k10-27-2005, 10:23 PMHey man....have you tried to just leave the stock ecu in there and have the megasquirt adjust timing via the NE signal....kinda like a piggyback... Node10-27-2005, 10:32 PMProblem with that is, the stock ECU will see all kinds of different peramiters and move the timing wherever the hell it wants. I already have an issue with it not adusting timing correctly for cold starts.

I would love to keep it distributorless and add three more coil packs but I want something I have complete control over.

I could mount a GM or ford pickup on the crank and use one of their external ignition controllers but thats a much larger pain in my ass then pluging a distributor into the cyl head that is already designed to accept it. Not to mention how much easier it is to program the EMS. Mister2.210-27-2005, 11:09 PMOT: What do you think of the Megasquirt? I wanted to run one but I was told by Noshoes that it was junk and that he would not even touch one. Node10-27-2005, 11:29 PMThe resolution of the maps is on the thin side IMO. Its nothing that some cairfull tuneing cant cope with. Since its pretty much a DIY system you need to know a LOT more to install one and get it to work propperly. Not to mention it has to be assembled (soldered) togeather. Since I am an EE, I dont mind :)

For the money though, if you know your stuff, the MegaSquirt can do some amazing things. It has some capabilities that other EMS systems dont even come close to offering. The system is missing two things though. Sequential injector fire and direct ignition control, thats it! If those arent an issue to you than use it. The megasquirt got a bad rap because the V1 SUCKED hard but 90% of those issues have been addressed with V2 and esp V3. Do some reading here http://www.bgsoflex.com/megasquirt.html Weasy2k10-28-2005, 12:22 AMi agree with noshoes im against MS...
a typical standalone would use the pickups perfectly and have no issue...now you have to find the proper disti to make this all work out no...becuase the cam speed makes a difference on the disti shaft too... Node10-28-2005, 12:32 AMRight, So im stuck again. The only way I see to handle the issue propperly is to use a distributor since the MS has the ability to control a single ignitor and handles dwell time etc for ONE coil. If I were to feed the ignitor signal from the MS to the ECU I would not have control of charge time etc.....

The most simple option here will be to use a distro for spark distribution and rely fully on the megasquirt. I would then have a choice of sensors to use. I could use the distributor sensors OR the stock 5VZ crank angle sensor ;)

Since toyota re-uses so many parts its likley that the 3VZ distro will fit. Why the hell would they leave the cutouts in a new head casting anyway? Its almost as though the motor was designed for the distributor and they were like ahhh screw it we'll throw some extra coils on there. Any 60* V6 distro should work as long as it fits since I can put the firing order however I need right? Weasy2k10-28-2005, 12:38 AMbuts the ratio im worried about....hrmm wait a sec....never mind it probably will work as the spark normally goes off the same in all engines :)

I cant stand distys tho...andother reasonf or my 5vz choice...

Would be interesting to try, why u want to control dwell for witht he stock coils? Toysrme10-28-2005, 12:04 PMI like our dizzys. It & the old school afm's let us do mild/medium turbo setups without paying for engine management :rofl: LoL! Weasy2k10-28-2005, 04:48 PMI like our dizzys. It & the old school afm's let us do mild/medium turbo setups without paying for engine management :rofl: LoL!

there are some electrical tricks to getting the MAF sensor to read a bit richer for turbo apps :)
so ditto to 5vz :P

just the timing we cant play with :( mr2greasemonkey10-28-2005, 07:31 PMYou want me to send you what? But all of mine work....hmmm......too bad you sooooo farrrrrr away, hehe. I'll have to take a looksy this weekend and see what you are talking about. I've got 2s,3s,5s,3v distributors on the shelf. How bout you tell me what you are looking for and i'll take some pics with measurements for ya. Node10-29-2005, 01:26 AMOk, basically I want a 3s style distributor that sticks into the cam end but I want to put a 6cyl cap and rotor on it. Sounds easy enough right? Look closeley at your engine and you will see what I am talking about. Toysrme10-29-2005, 01:41 AMI mised something back up. Why would you want a 3s style distributor? mr2greasemonkey10-29-2005, 02:10 AMhmmm........I take it you wanna run it off of the exhaust cam. My sister has the digi cam so it may be awhile before i can send you some pics Jim. But i'll take some measurements of the plug and distributors and let you know what I come up with. Not sure how cam timing is going to be with a 3vz dizzy though. Weasy2k10-29-2005, 02:13 AMhe says a 3s STYLE not a 3s disti itself....the 3s style he means like the one you shove in the valve cover and fits in a socket on the exhaust cam to determine crank and cam signal... Toysrme10-29-2005, 02:22 AMTo go along with what I said on who knows what forum... (Seriously dude the same people read the same forums. Kill all the other threads & merge them into one forum. Round Robin posting isn't constructive LoL)


Here's how a 3vz-fe is setup & here's what you'll have to do with the 5vz-fe head to get a diz to work. (Tho like the other thread, we don't know why bother)


1) You need to knock the caps out of the head & hope Bank 1's head has the distribtor space machined out (Not just a hole)
2) Drill the mounting holes & tap them.

http://img.photobucket.com/albums/v414/Toysrme/Answers/Head-Diz-Side.jpg
3) Head needs to be able to support the camshaft all the way down.

http://img.photobucket.com/albums/v414/Toysrme/Answers/Head-Diz-I.jpg

4) Camshaft needs to be long enough to get to the distributor & be keyed for it
5) Bearing caps to hold it together
http://img.photobucket.com/albums/v414/Toysrme/Answers/Head-Diz-II.jpg

http://img.photobucket.com/albums/v414/Toysrme/Answers/Head-Diz-III.jpg

















Timing events won't change less you're taking the stock stuff off. Node10-29-2005, 01:19 PMThank you, thats exactly what I was looking for. Node11-02-2005, 12:16 AMOk, lookiee here.

As you can see the cam IS already machined for the distributor AND the metal shaft cap for the Distributor is already on the motor. There is a rubber stopper blocking off the spot where the distro should go. The setup looks almost exactly like the distro on the 3s just a little shorter. Heck the bolt holes for adjusting the distributor are aready bored and tapped man I love toyota LOL

http://www.mr2board.com/files/members/node/dsc_078.jpg

http://www.mr2board.com/files/members/node/dsc_082.jpg

http://www.mr2board.com/files/members/node/dsc_083.jpg

Looks like the 3VZ distro would work right? Another question for you toysrme, do your 3VZ-FE cams have a 3 cast into them? Would you be willing to take some mesurements of the center to center of the caps and lobes of your cams. I suspect that the 3VZ-FE and 5VZ-FE both use the same cam shaft blanks. If so, I can use the longer duration cams from a camry or other 3VZ to move my power band to a slightly higher point. That would be sweet. I bet I could net another 20 hp up top with some better cams. Weasy2k11-02-2005, 02:36 PMOur crank pulley alraedy has a trigger wheel on it so what you could do as well is get this
http://www.034motorsport.com/product_info.php?cPath=27&products_id=176
And fit it on by modifing this
http://www.034motorsport.com/product_info.php?cPath=27&products_id=320

That will get you the basic bosch type VR sensor which MS uses...

and the cam alrady has a similar pickup which you could use as well :) Node11-02-2005, 05:13 PMGuys, you're missing the point. The megasquirt is compatible with the existing crank trigger it only needs slight modification.

What the megasquirt V2 is not compatible with is running the multiple outputs that the ignitor requires to trigger the packs. So, I dont want the distributor for the sensors, I just want it to distribute the spark.

Several sinipits of good news. It looks like the 3VZ-FE distributor will fit right into the already machined cyl head. The 5VZ-FE cam is already notched for the distributor so the ignition problem should be solved. The cams are made from the same exact blanks as the 5VZ cams so even the spacing on the cap should be the same.

No $1000 EMS needed for my torque monger :woot: Toysrme11-03-2005, 12:23 AMThe end of the 3vz-fe distributor has 2 prongs on it, not 3.
I agree. There is no reason to be doing this work... Weasy2k11-03-2005, 01:41 AMAhhhh i thought you had trouble getting the MS to read the toyota sensors,....

There are upgrades you can buy for MS that will handle multiple coilpack firing... Mister2.211-06-2005, 08:54 AMDon't you have to use all GM sensors with the MS? Node11-06-2005, 01:42 PMThere are upgrades you can buy for MS that will handle multiple coilpack firing...

Yes there are "upgrades" that use FORD parts. I will have to install the ford pickup and ignitor/computer pack onto my engine.

First of all I HATE ford!!! I dont think I made that big enough! So there is NO way im running ford parts on my car.

Second, the megasquirt can be reconfigured to work with practically any sensor by editing/recompiling the source code and updateing the EPROM.

Third, even if I did use the ford system. It would cost between 90 to 300 dollars just for the parts. My project has, from the beginning, been about how inexpensively I can build a back yard supercar. The magasquirt itself will cost me $140 at most! So, If I can get the 3VZ distributor for next to nothing then why not do it. The head is already set up for it. The cams are the EXACT same blanks as the longer duration 3VZ cams and the distributor insert is already machined by Toyota. It will make tuneing easier. I can upgrade to one big badass coil and I wont have to make custom parts or try to fit up a timing wheel when the one I have works perfect already. Weasy2k11-07-2005, 01:12 AMand you couldnt just use it to dirve the 3 coils on the engine alreay?
See i was told from a guy who tunes MS that you can get it to just do wasted spark firing 3...using the stock coils...all you need is a + - signal to them.... Powered by vBulletin® Version 4.2.5 Copyright © 2026 vBulletin Solutions Inc. All rights reserved.

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