1995 Mighty max 4g63t big 16g swap

Egoinstigator · Post by **Egoinstigator** » Fri Oct 02, 2009 11:15 am

Got mine running after 2 years of down time due to a blown stock 4g64 and lots of other projects in between....

Here is a short walk around video of my 95 Mighty Max - 4g63T Turbo

http://vimeo.com/6786786

93 JDM spec pullout 4g63t motor
510cc Yellow top injectors
big 16g
4g63mightymax (Jeremy) O2 housing / downpipe.
Ebay Tubular exhaust manifold
Ebay hard pipe kit
Ebay Intercooler
Ebay dual manual boost controller
In tank Fuel pump from my 6.0 GTO
Megasquirt 1 pcb 3.0
Innovate LC1 Wideband
Custom harness
SPEC 2+ clutch / pressure plate
Stock Mitsu narrow block Trans
Everything else, STOCK

2 years on and off working, learning, and tinkering.

Realizing how little I actually know -- Priceless.

boise-nic · Post by **boise-nic** » Fri Oct 02, 2009 7:34 pm

Well? How is it to drive? Congrats!

Egoinstigator · Post by **Egoinstigator** » Thu Oct 08, 2009 11:02 am

Well, it is a hand full to keep from spinning with my currently open diff....

Cruising the Coast is happening here on the Coast of Mississippi and there about 14000 Hotrods and Cruisers all over the place playing.

I have run into some stock C5's and I stay door to door with them from a roll only pushing 10 PSI on low boost while I datalog and tune. 18-20 psi is coming as soon as I get some more injector.

Needless to say, it surprises them to see an ugly mini truck with a dent and some body work doing that.

Megasquirt is amazing on top of this tweaked 4g63t.

Also, for reference, I have two other V8 cars. A H/C/I/Stall/Etc... 05 GTO that runs mid 11's on motor @ 117 ... faster on a 150 shot, and a 86 Monte Carlo SS that runs 12.8@107.

The pickup feels like the Monte Carlo pull when it is at 10 psi.

Good stuff!

boise-nic · Post by **boise-nic** » Thu Oct 08, 2009 7:19 pm

No not good stuff...great stuff! I've got the same year, almost same setup. Good to have some driving impressions. Man, that turbo isn't even in its efficiency range and your keeping up with c5's?! Nice work. I'm guessing off boost power is plenty being light weight? I hated the off boost power of my AWD DSM. It really needed the turbo to haul its heavy ass to go anywhere. I'm thinking the truck would still feel ok even of boost. What do you reckon the 95's weigh? I've heard everything from 2800 lbs to 2200 lbs.

Now you got me inspired to go work on the truck tonight!

Egoinstigator · Post by **Egoinstigator** » Sun Oct 11, 2009 11:27 pm

I am certain the Corvettes would pull me well beyond my midrange at this point due to only pushing the 10 psi and aerodynamic advantage, but I sure gave them boys hell stoplight to stoplight.

I even got the attention of a very fast large positive displacement supercharged Cobra that sucked the paint clean off one side of my truck.

We both got a huge kick out of it as well as the crowd with his whine and my load bov. Grins all around.

Off boost power feel way better than the worn out 2.4 I had in it, and boost is building by 2700 rom according to my Megasquirt logs.

I am certain that your 93 weighs the same as my truck given there are no major changes from stock. I put mine on a scale at a local Truck Stop for reference.

You're going to really enjoy the truck even on stock boost levels!

89coltgt · Post by **89coltgt** » Mon Oct 12, 2009 7:04 pm

Good stuff Rob! I am looking foward to your impressions after the lsd swap and turning the wick up on that 16g. What did your truck weigh and what does the truck still have in it?(heat/ac/ps/etc)

Egoinstigator · Post by **Egoinstigator** » Mon Oct 12, 2009 8:55 pm

Truck weighed just over 2800 with me in it...

It has no power steering, no ac, no spare tire, no rear bumper, and full interior.

I am looking for some form of traction bar setup and further weight reduction.

we'll ee!

4g63mightymax · Post by **4g63mightymax** » Wed Oct 14, 2009 9:08 pm

Egoinstigator wrote:Truck weighed just over 2800 with me in it...

It has no power steering, no ac, no spare tire, no rear bumper, and full interior.

I am looking for some form of traction bar setup and further weight reduction.

we'll ee!

Finally! You can experience the sweetness that is a turbocharged truck! I am putting the EVOVIII turbo on my truck soon, so maybe we can have a long distance race to see who's faster

Nice work!

-Jeremy

Mad Menace · Post by **Mad Menace** » Fri Dec 04, 2009 2:12 am

Megasquirt is amazing on top of this tweaked 4g63t.

You wouldn't happen to have an*.msq file I can look at do you?

Egoinstigator · Post by **Egoinstigator** » Sat Dec 05, 2009 2:35 am

I absolutely DO have a msq file you can look at.

If you will send me your EMAIL address, I will send it asap.

FYI, I used one of the MSQ's from Symtech Labs that was close to my application and did some editing and tuning to get it dialed in right. It got it started and idled well enough to work on it.

http://www.symtechlabs.com/support/msq_rep.php

Egoinstigator · Post by **Egoinstigator** » Sat Dec 05, 2009 2:38 am

Did some roll-on test pulls to see how things are hooking and working.
mostly half throttle with one pull into 3/4 throttle. I only let it go to 4500-5500 rpm, but you'll get the idea....

http://vimeo.com/7994667

Egoinstigator · Post by **Egoinstigator** » Sun Dec 20, 2009 11:05 pm

Installed my universal traction bars and the improvement in the ability to Launch and put the power down is second only to the Turbo 4g63 itself.

I am amazed at the difference a properly setup suspension, although cheap , made on this pickup.

Don't forget to put some effort into your projects in that area. Only Cost me $43 bucks and a little time to get this thing to work a LOT better.

boise-nic · Post by **boise-nic** » Sun Dec 20, 2009 11:32 pm

Egoinstigator wrote:Installed my universal traction bars and the improvement in the ability to Launch and put the power down is second only to the Turbo 4g63 itself.

I am amazed at the difference a properly setup suspension, although cheap , made on this pickup.

Don't forget to put some effort into your projects in that area. Only Cost me $43 bucks and a little time to get this thing to work a LOT better.

Man that is downright inspirational!

So even with the LSD, you seem to loose traction in 2nd or 3rd gear? Did the traction bar help that out at all? I'd like to see some pics of your rear suspension setup if you could snap some.

What wheels are on your max? They look good.

Since we all live on a closed course in mexico

, can I ask if anyone has tried to race ya yet?

Egoinstigator · Post by **Egoinstigator** » Mon Dec 21, 2009 2:30 am

I owe a lot of photos to folks.. I need to get that done!

The Setup is generic and cheap, and all stock save the Raider LSD and Traction Bars. The wheels are from a Durango I believe... I do not know for sure because they where on the truck when I adopted it.

Axle wrap and wheelhop are gone. The tires stay planted as well as they can considering they are stock for whatever a Durango comes with.

I'll be hunting up some ET streets or Hoosiers for a track day.

If the Transmission dies, I am going to put a 200r4 in it with one of Bill's adapter plates.

shroder15 · Post by **shroder15** » Sat Dec 26, 2009 5:59 am

What brand are your traction bars? I picked up some lakewoods for mine and they are a touch too long. If you could post pictures of how yours fit up it'd be great!

Egoinstigator · Post by **Egoinstigator** » Sat Dec 26, 2009 11:46 am

I got the yellow Jeg's brand ones for $41 bucks... just like the Lakewoods but a little cheaper.

Mine had three holes for the snubber to bolt in. I used the one at the rear most position. When I mounted them on the springs, I hung them and pushed them as far back as the front u-bolt would go against and tightened them up against the shock / spring mount.

They snubbed too tightly. So, I trimmed the snubber with my sawsall to get about 1/2 inch gap between it and the bottom of the spring. I had no shims and this keeps everything up and out of potholes.

Mad Menace · Post by **Mad Menace** » Sat Dec 26, 2009 12:12 pm

Post up some pictures man.

89coltgt · Post by **89coltgt** » Sat Dec 26, 2009 12:19 pm

Mad Menace wrote:Post up some pictures man.

+1, I was going to build my own set, but if these work ok, I may just go that route.

shroder15 · Post by **shroder15** » Sat Dec 26, 2009 11:03 pm

Is there anyway you can post a few pics ofthem up? I'm struggling to get mine not to sag too far and still trying to get them to line up right. Also, do you still have all of your springs or no?

Egoinstigator · Post by **Egoinstigator** » Sun Dec 27, 2009 12:27 am

I'll see what I can get for photos tomorrow , Sunday, and post them up for you all.

I have all the springs and everything is stock except for the Traction bars.

Egoinstigator · Post by **Egoinstigator** » Sun Dec 27, 2009 2:20 pm

Got some photos of Traction bar setup.

Mad Menace · Post by **Mad Menace** » Sun Dec 27, 2009 2:54 pm

Sweet deal... with a lowered truck that would cause problems, but at stock height thats pretty sweet isnt it... and about as straightforward and simple as it can be.

Egoinstigator · Post by **Egoinstigator** » Sun Dec 27, 2009 4:48 pm

Yea it is simple, but it works. I will make a video with my Gopro motorsports camera soon to demonstrate it.

I bought this truck from a fella that had converted it back to stock hight. It used to be a lowered mini with a snugtop and a big ass stereo in it. The rear firewall still has a huge hole in it and is covered with some sheet metal and the rubber boot it had.

Mad Menace · Post by **Mad Menace** » Sun Dec 27, 2009 5:10 pm

Pre-built blow-thru... I'd dig it... I took the easy way out and knocked out the back window and piggy backed the topper over the cab a little, the only down side to that is the cold air rushes forward when you stop...lol

shroder15 · Post by **shroder15** » Mon Dec 28, 2009 12:51 am

Man...It looks like i'll be doing some modification or figuring something else out. My truck is lowered and was that way when i got it so I dont have much else I can really add on hand...and would prefer to keep it lower...but we'll see what happens with it. You have any other ideas to prevent axle wrap when slapper bars dont work? Something on the cheaper side lol!

Egoinstigator · Post by **Egoinstigator** » Mon Dec 28, 2009 1:16 am

Even lowered, I don't see how the Traction bars would be in any different position in relationship to the road... unless the diameter of your tire/wheel combo is a lot smaller than mine. What am I missing there? I just don't see it yet.

Having said that, the only other alternative is to do some kind of ladder bar / torque arm setup to keep the axle from rotating under load.

Mad Menace · Post by **Mad Menace** » Mon Dec 28, 2009 7:21 am

Egoinstigator wrote:Even lowered, I don't see how the Traction bars would be in any different position in relationship to the road... unless the diameter of your tire/wheel combo is a lot smaller than mine. What am I missing there? I just don't see it yet.

Having said that, the only other alternative is to do some kind of ladder bar / torque arm setup to keep the axle from rotating under load.

If you lowered the truck by way of bigger blocks between the axle and spring, and kept the same exact tire/wheel combo you already own and run on, you would effectively set the traction bar closer to the ground inch for inch.... However if you had lowered the truck by way of shorter spring saddles (don't quite know if it's possible on these 2wd trucks) then you wouldn't have changed a thing as far as the traction bar was concerned...

Then there is always the whole lowering the rear end of the truck with weight option... i.e Stereo equipment, Tools, Engine parts, Elephants, ect... use your imagination

And for the second response I have a suggestion of a reversed traction bar like used on lifted 4x4 Jeep builds and such where ground clearance is crucial and so is keeping the underside of the vehicle clear of things that may be easily ripped off by objects on the trail.
I wish I had pics of the way my Dads old leaf spring jeep was set up, it had a 440 Magnum w/tunnel ram, Dual Quads and MSD... but he sold it due to poor gas mileage and that he never took it out on the trail after we built it like that.

Egoinstigator · Post by **Egoinstigator** » Mon Dec 28, 2009 8:59 am

Thanks for that explanation. I just was not seeing it.

The reverse traction bar sounds like it would work... I have never seen one, but I am not that worldly in terms of suspension setups.... obviously huh?

So, Something like this would work too:

Egoinstigator · Post by **Egoinstigator** » Thu Jan 07, 2010 12:09 am

Another small update:

Now that boost is being leveled off at a steady 20-21 pounds and I am able to log a nice long 3rd gear pull from low RPM, I am seeing my afr's hover in the low 13's and I am pushing 98% duty cycle...

So, I bought a set of 750 cc injectors off ebay to rectify my lack of fuel. I want it to be around 11.5 at wot and these injectors should do it while giving my a decent overhead on my duty cycle.

Looks like things are coming together better and better as I poke at this thing with a stick.

I will have a set of yellow top 510cc injectors I can sell after this swap, if anyone is interested. I will post in the sale section when available.

Egoinstigator · Post by **Egoinstigator** » Fri Jan 29, 2010 12:37 pm

I installed my FIC 750's and have been using the new Autotune feature in Megatune Studio for my Megasquirt setup.

It's a whole lot better AFR now. I started out with the tune for the 510's running the 750's and had 9.0:1 afr under full boost rather than the 13:1afr I was getting @ %90+ duty cycle.

After the tuning, I am holding a nice 11.6-12.0 above 5k rpms and at full boost. So, that means my fuel system and management system are able to handle my current setup @ %70 max DC thanks to EGO correction having enough headroom to work with.

Amen.

boise-nic · Post by **boise-nic** » Mon Feb 01, 2010 1:15 am

With megasquirt, do you have full control of your ignition timing? The reason I ask is I'm running 750 cc injectors with a MAF-T. My setup can 'adjust' for the larger injectors by tricking the computer to seeing 40% less airflow. Poblem with it seeing less airflow is my ignition curves are way to aggressive. I could set my base timing back a few degrees but it seems more like a bandaid then a fix. Might just have to bite the bullet and get megasquirt.

Egoinstigator · Post by **Egoinstigator** » Mon Feb 01, 2010 10:07 am

I use the Megasquirt to control spark and fuel... so, yes! as long as you have the correct circuit modification in the proto area of the MS board and the right Firmware, you can trigger / control the ignition fully.

diyautotune.com has all the necessary information and even any parts you might want.

Project Zero G Forums

1995 Mighty max 4g63t big 16g swap

1995 Mighty max 4g63t big 16g swap

Test runs of my max after a LSD swap.