My v6 Drag Week build

[Sundance 6g72]

crap

are you able to tell me what settings you changed? i think im turning accel enrichment ON but i dont wanna mess with it before knowing for sure

[c2xejk]

I set number of sample events to 4 and set the MAP lag filter to 40.

crap

are you able to tell me what settings you changed? i think im turning accel enrichment ON but i dont wanna mess with it before knowing for sure

Go to Basic setup>General, lags then make the changes noted above.


In other news, Drag Week is looking more likely... http://blogs.hotrod.com/drag-week-ne...ing-25201.html Wish I knew where I was on the waiting list.

[Sundance 6g72]

thats the only thing you changed? left accel enrich to basic?

[Ondonti]

I might look into that as well. What Sensor are you using Ed? Not fun to mess with accel tuning when there is another problem that causes hiccups.

[c2xejk]

thats the only thing you changed? left accel enrich to basic?

Yup... With the extra reads, the MAPdot signal seem to settle down enough to turn down the AE threshold and have it kick in earlier. There was some AE changes, but I would expect that to vary from engine to engine...

I might look into that as well. What Sensor are you using Ed? Not fun to mess with accel tuning when there is another problem that causes hiccups.

What ever the stock MAP sensor is for the MS2...

[Sundance 6g72]

i never had a problem tuning AE so i should be fine

I might look into that as well. What Sensor are you using Ed? Not fun to mess with accel tuning when there is another problem that causes hiccups.

you scared me with the AE before i had my megasquirt.. its much easier than i thought it would be.

[Ondonti]

Well the OEM computer didn't like that cam either and I had what, 4 n/a load points for something that wants to make no power off idle :P

I redid my load points after I realized that VE changes very little as boost increases/decreases.

[Sundance 6g72]

how much did VE values vary from say 160-170kpa? i gave my self a good amount of boost areas but im also running less boost.

i guess that does make sense with the cam and no load points under 100kpa! with stock cams and a good amount of NA load points, its hard to get accel enrich to effect driveablity.

[c2xejk]

Over the weekend I pulled the transmission. It has been mostly degreased, a drain plug has been drilled and tapped and the OBX LSD has been installed.

I still need to fix the lever for the crossover cable. There is a fair amount of play in the stock roll pin. So the plan right now is to remove the stock pin (M4?), drill out the hole and put a 3/16" pin in it's place. That should fix the side-to-side play in the shifter that has been annoying me.

Once the transmission is done, I will get started with the engine.

[Ondonti]

how much did VE values vary from say 160-170kpa? i gave my self a good amount of boost areas but im also running less boost.

i guess that does make sense with the cam and no load points under 100kpa! with stock cams and a good amount of NA load points, its hard to get accel enrich to effect driveablity.

Its going to change almost nothing. That change is also going to be very consistent as boost increases, restrictions are going to increase. A few VE points is all you really need even if running 30psi. For 8psi its cake! I changed mine to 10 n/a load points and 6 boosted points. The only think you are doing is correcting for restriction changes. The fueling formula takes care of the rest.

Ed, once I removed the cotter pin someone stuck into one of my transmissions and then put in a china screw driver from the little blue/clear plastic box sets. It was the perfect size (can't remember if I drilled out the hole though). Cut off all the extra length and hammered it in.

[Sundance 6g72]

thanks for the info. i never knew that and would always feel that the tune was going to be junk because the values where so close and i would richen it up!

[RoadWarrior222]

I'd have been thinking ford brake caliper pin before chinese screwdriver, but then I have a bunch around... bought a hardware kit, pads and calipers when I did my brakes and got new pins in all three.

[c2xejk]

The Shadow is going back together slowly. I found that the rear manifold was cracked (it was suspected during Drag Week.) It was cracked in several places on the top and bottom. I spent some time and ported the replacement.

Right now I am debating which turbo. I am pretty much planning on a GT3582. The key question is one with a T3 or T4 flange...

[Sundance 6g72]

whats the difference between the two flanges? would one be a t3 housing and the other a t4?

[c2xejk]

The turbos appear to be identical other than one has a T3 flange and the other has a T4 flange... There are some variations that have a different output flange, but they are all 3" out (V-band or 4-bolt.) T3 theoretically gives me the possibility to step to a smaller turbo if the GT3582 turns out to be too big. The T4 makes it easier to fabricate the header (larger port to merge things into...)

Two examples are:

http://www.speedyracer.com/GT35-TURB...ger%28500hp%29
http://www.ebay.com/itm/GT35-T4-Turb...d5da2e&vxp=mtr

[Ondonti]

t4 flange for a turbine wheel that large should work better in all ways with the same a/r.

[turbovanman²]

T4 flange is a bigger a/r compared to the same T3 flange, so a .82 T4 is bigger than a .82 in a T3 housing, so keep that in mind.

[c2xejk]

Over the weekend, I thought I might get the car back together. After I sealed the coolant system I started filling it with water. I heard it dripping a found that it was from the front of the motor...

Tour down to the timing belt and found that the brand new water pump was dripping... Closer inspection and I realized it was leaking from a crack in the PUMP!!! I was PO'd... I put the pump from the prior motor on (it has only about 30K miles on it and I was only replacing it to be "safe"...

Right now I am out of town at a conference so it will be this weekend before I get back to working on the car again. With a little luck, I should get it back together this weekend...

I have ordered pipe for the turbo header. I haven't made a final decision on T3 vs T4 flange, but I am leaning toward T4.


I am starting to hear stories on bangshift of people that will not be able to make DragWeek and are dropping out. So that increases the likelihood that I will be able to get in...

[Vigo]

Here's hoping you get in!

[Sundance 6g72]

woooo