Builds 2F + (3F-E) = 2FETI Into My FJ40 (1 Viewer)

[matt.mcinnes]

The injectors have been tested and they are all good so it's not leaning of due to that.

The intake plenum will now need flow testing to see if there are any issues at boost with how the air flows.

Once we have this information I will most likely add two O2 sensors one in each header. So the first one covers cylinders 1,2 & 3 and the second 4,5 & 6.

Currently the O2 sensor take an average of all 6 cylinders, adding a second sensor will make the O2 readings more accurate as the average will be over only 3 cylinders

Word is should then pick up an extra 20kw or there about.

The good news is the Wolf V500 can control each cylinder individually and it's not impossible to drill and tap a hole in to each of the exhausts, moving the O2 sensor from one to the other tuning each to optimum performance.

Just going to take a little time.

 

[Trollhole]

The injectors have been tested and they are all good so it's not leaning of due to that.

The intake plenum will now need flow testing to see if there are any issues at boost with how the air flows.

Once we have this information I will most likely add two O2 sensors one in each header. So the first one covers cylinders 1,2 & 3 and the second 4,5 & 6.

Currently the O2 sensor take an average of all 6 cylinders, adding a second sensor will make the O2 readings more accurate as the average will be over only 3 cylinders

Word is should then pick up an extra 20kw or there about.

The good news is the Wolf V500 can control each cylinder individually and it's not impossible to drill and tap a hole in to each of the exhausts, moving the O2 sensor from one to the other tuning each to optimum performance.

Just going to take a little time.

Sorry to hear that. What was the indication that led you to believe it was running lean?

What were the compression numbers on those cylinders before and after the failure?

You don't think it could have been a head gasket failure that caused the lean condition?

I couldn't imagine the intake being the issue. But of course it was not designed for pressure just vaccum. I wish I had the ability to have 2 o2 sensors. Alas TBI only allows for one that I know of.

Did you have an air /fuel meter in the cab with you? ANy logs we can see for the ECU? I'd be interested in seeing your numbers.

 

[toddm]

If you are running side feed injectors and the fuel feed is at #1, you will get less fuel pressure at #6. Top feeds are not as suceptible to this. On the MR2's we usually add a second fitting on the other end of the fuel rail and put the fuel return line/regulator in the middle of the rail. This took care of alot of lean out problems with the cylinders furthest from the feed. Stock rails are fine for stock power but start to show problems at higher flows. You can also bore out the inside of the rail to flow more. I don't know what you are running but maybe this will help.

Todd

 

[pappy]

If you are running side feed injectors and the fuel feed is at #1, you will get less fuel pressure at #6. Top feeds are not as susceptible to this. On the MR2's we usually add a second fitting on the other end of the fuel rail and put the fuel return line/regulator in the middle of the rail. This took care of a lot of lean out problems with the cylinders furthest from the feed. Stock rails are fine for stock power but start to show problems at higher flows. You can also bore out the inside of the rail to flow more. I don't know what you are running but maybe this will help.

Todd

That is good information. The stock 3FE is fed at the #6 side, and the return/regulator is at the #1 side. Opposite of what you said, but same idea.

 

[matt.mcinnes]

That is good information. The stock 3FE is fed at the #6 side, and the return/regulator is at the #1 side. Opposite of what you said, but same idea.

Mine feeds from 1 to 6 Some food for thought here.


Good stuff.

 

[malcb]

The good news is the Wolf V500 can control each cylinder individually and it's not impossible to drill and tap a hole in to each of the exhausts, moving the O2 sensor from one to the other tuning each to optimum performance.

Interesting idea. On big natural gas engines we measure and log exhaust gas temps on each cylinder all the time, mostly to spot valve issues early, wonder if that would help spot lean running on a single cylinder. It's an easy condition to monitor, we set max temps but are more interested in differences between cylinders.

 

[matt.mcinnes]

For now I have increased the fuel to 5 and 6 using the trims the wolf V500 has, this adds fuel right across the range. One of the advantages of a such ECU's.
We can tune each individual cylinder.

Oh yes our first competition tomorrow, Friday night and Sat & Sun is Vic Winch Challenge. So things have been a little hectic, Sunday blow gasket, Monday tare engine down and send head out to be checked and faced. Work Monday Night, Tuesday sleep till noon, Pick head up, rebuild till 5. Had Booked 4 days Annual leave to prep for comp, good job. No work till next Monday night. Wed finish rebuild and warm engine up, fire's first time. Drive home gently and leave to cool.

Thursday up at 6 have to take a HJ45 Troopy to the docks bound for the USA, now 7:45am transporter due at 8am.

Then time to retention the head bolts and rebuild again.

Ok I have to go have way too much to do, but when it involves 40's it's all fun

 

[toddm]

Interesting idea. On big natural gas engines we measure and log exhaust gas temps on each cylinder all the time, mostly to spot valve issues early, wonder if that would help spot lean running on a single cylinder. It's an easy condition to monitor, we set max temps but are more interested in differences between cylinders.

It would work-kinda. Automotive engines are a bit more dynamic than what you are dealing with. ETG's don't react fast enough for dyno tuning and as far as I know you cant log the data. The best solution is individual widebands in each ex port. Nobody but race teams do that though. We normally tune with race gas the basic fuel maps with a single wide band 02 then go back and add a little bit more to the detonation prone cylinders. That is if the ecu supports sequential injection and trim.

Matt: Your idea about 2 O2 sensors is probably not a bad idea. also you might want to think about some type of knock sensor if you don't already have one. They save lots of engines from poor tuning or even a clogged fuel filter!

 

[matt.mcinnes]

Well new head gasket is in and fuel to 5 and 6 increased.

Vic Winch challenge our 5th year in a row at this comp and we finished 8th overall our highest ever placing, we could have done a little better but this was a baptism of fire for the new engine as we have not drive it of road in anger.

Cork screwed to destruction a rear tail shaft and clean sheared a rear axle.

Made a new tail shaft and made it stronger too, hence we broke the rear axle on the very last stage 30 yards from the finish line, but still made it, but this is where we want the weak spot. 6 bolts slide in slide out and good to go.

This engine just ROCKS, the only thing slowing us down against the other trucks is leaf spring, all others run coils.

But we race the old 40 for fun, if we wanted to win we would be running a Nissan Patrol or a Ford Maverick.

PIC here Vic Winch 08

 

[RockDoc]

Nice

You have any videos you'll be uploading?

 

[matt.mcinnes]

Nice

You have any videos you'll be uploading?

Oh yes we even took the in cab on one stage for the official event film crews.

But it will be a little while, my Mac wont talk to my vid cam and my Lap top died Friday

 

[RockDoc]

Look forward to seeing it when it's up!

 

[matt.mcinnes]

Look forward to seeing it when it's up!

Here's some YouTube stuff of the event nothing of me as yet.

Vic Winch 08

 

[beejay42]

... I guess something had to give somewhere eh?

Congrats on the placing- and for even making it to the comp with the recent head gasket issues

(I'm attempting to pull off the T-case today, and seeing what it looks like inside- picking up a rebuild kit this arv if it looks worth rebuilding)

 

[watrob]

... I guess something had to give somewhere eh?

Congrats on the placing- and for even making it to the comp with the recent head gasket issues

(I'm attempting to pull off the T-case today, and seeing what it looks like inside- picking up a rebuild kit this arv if it looks worth rebuilding)

How long had you had that axle in for?

 

[matt.mcinnes]

That one has been in since it was up graded with 2 extra 8mm dowel pins

Thats the second one I have sheared now, both have sheared cleanly at the same place, the first I managed with the 1st 2F but I suspect that axle already had issues. None the less the 2 8mm dowel pins have meant no to damage to the hub or it's studs. So it's a real easy at comp repair. But when your trying this hard things do break

Pic by Daggy



Also damaged the rear lights a little so time for an up grade

 

[watrob]

You don't need a FJ40 you need a TANK.

 

[ab'z]

That one has been in since it was up graded with 2 extra 8mm dowel pins

Thats the second one I have sheared now, both have sheared cleanly at the same place, the first I managed with the 1st 2F but I suspect that axle already had issues. None the less the 2 8mm dowel pins have meant to damage to the hub or it's studs. So it's a real easy at comp repair. But when your trying this hard things do break

Pic by Daggy

Also damaged the rear lights a little so time for an up grade

Found a pic of my Navi Mairn aka Ben inspecting the tail shaft

Pic by BushTuckerNed and caption.

Marin with a screwed tail shaft on the 40

YOUR home allready

Great stuff on the weekend you did really well

the tail lights and indacators will look the goods

 

[bsmith123]

comp

Congrats,

It's one thing to build a 40, but quite another to make it competitive enough to finish in the top 10, quite an achievement

Great pics, I'd love to have a chance just to drive some of that terrain

 

[matt.mcinnes]

Congrats,

It's one thing to build a 40, but quite another to make it competitive enough to finish in the top 10, quite an achievement

Great pics, I'd love to have a chance just to drive some of that terrain

Tks pretty dry again as you can see but the state of Victoria is in it's 11th year of drought.

Water storage will not make 35% after the winter and spring rains, Sunday at comp we hit 84.2 degrees already this early in the year. Water storage is likely to get as low as 20% by the end of this summer. Next year will make or break this state.

But Vic has all the terrain you can poke a stick at from Alpine to desert, coastal to rain forrest, well we would if it rained.

http://www.melbournewater.com.au/content/water/weekly_water_update/zoom_graph.asp