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| LS4 / F40 swap - fieroguru (Page 209/209) |
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fieroguru
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JUN 13, 10:20 PM
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| quote | Originally posted by dskebo:
When are you going to get the paint shining like it deserves? The car is a labor of love and it should look the part. |
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Who knows...
I would like to get it painted, but I still have 3 more body mods to complete.
I also don't want it to be locked up in body shop jail for a year or more either.
So for now, I will just continue with more modifications/refinements and drive the wheels off it!
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fieroguru
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JUN 15, 08:58 PM
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Got back from the HRPT yesterday.
Long Hauled with Marty, his son Steven, and Jack & Joe.
Also met up with several other Fiero owners and showed Alex4mula some pictures of the sub box he inspired from his build. Spent a fair amount of time talking about my car, and Marty and Joe helped field the many questions as well.
Only issue was some debris on the road between Indy and Joliet damaged the sidewall on one of the rear tires. They were 8 years old and needing to be replaced. Fortunately, from Joliet, we were headed to Ft. Wayne and Tire Rack has some rear tires in stock. So we nursed the car to South Bend, got new tires, and made it to the Ft. Wayne venue about 3 PM.
Also met up with some of the Haltech guys that were participating in the tour with their personal cars and they really liked the Fiero as well.
Overall is was a 1200 mile trip and the best tank of gas was 27.6 mpg. I checked the weight again as the same grain elevator, and it is still 2920 lbs, so more work needed on that front.
Now that the HRPT is over, I started with the WOT tuning.
After about 6 WOT runs with the boost controller set at 15% duty cycle I am seeing about 3.5 psi boost.
I should be within about 1-2% on the fueling with the latest tune revision.
Now I can bump the duty cycle, and start coorelating % duty cycle to overall boost pressure, and dial in the fueling at higher boost levels. Not planning to go over 8psi.
The car has been to work 1 time this year, but I will be drving it daily for the rest of the summer.
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fieroguru
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JUN 29, 05:47 PM
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Just been driving the car daily the past 2 weeks (truck hasn't moved).
- Adjusted the End Of Injection Timing (EOIT) and saw a 2% reduction of fuel usage at idle - should be similar at cruise.
- Part throttle VE is within +/- 2%, but can swing up to 5% between morning and afternoon driving (fuel and air temp caused), so I disabled closed loop & LTFT below 160 degrees (it was set to 32 degrees as delivered) and lowered the LTFT gain to 5% so the STFT can take care of changes due to fuel temperature w/o having the wrong LTFTs stored the next time the car is started.
- I still need to insulate the hot air tube from the turbo to the intake. It is heat soaking too much and I see about 125 degrees in city driving - granted it was a 95 degree day.
- Cut the cold start enrichment in half, since it is now running open loop and the supplied gains were much too high.
- With the change of the cold start enrichment and the raising of closed loop to 160 degrees, I can start the car in the morning and go. Before I needed to let it warm up about 60 seconds, and feather the throttle more on the first 2-3 accellerations from a stop.
- Roughed in the max throttle opening by RPM x Gear so that 1st and 2nd gear hook vs. spin (atleast at 15% wastegate duty cycle)
The car now has about 8,500 miles on it with the turbo, and about 2000 miles this year.
Waiting for a 195 thermostat to come in, then I will swap out the 180 in the car. Warmer engine temp should help with fuel economy and my quest to get to 30 MPG.
Still need to work on the cruise, front wheel speed sensor, and flex fuel... but free time has been limited.
I accepted a promotion to the Asset Manager (Plant Manager) position and will be covering my duties as the Engineering Manager until that position is filled.
Anyone with significant engineering exxperience looking for an Engineering Manager position with a public utility in the middle of IL and surrounded by corn/soybeans, please send me a PM.
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KissMySSFiero
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JUN 30, 10:45 AM
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| quote | Originally posted by fieroguru:
Just been driving the car daily the past 2 weeks (truck hasn't moved).
The car now has about 8,500 miles on it with the turbo, and about 2000 miles this year.
Waiting for a 195 thermostat to come in, then I will swap out the 180 in the car. Warmer engine temp should help with fuel economy and my quest to get to 30 MPG.
Still need to work on the cruise, front wheel speed sensor, and flex fuel... but free time has been limited.
I accepted a promotion to the Asset Manager (Plant Manager) position and will be covering my duties as the Engineering Manager until that position is filled.
Anyone with significant engineering exxperience looking for an Engineering Manager position with a public utility in the middle of IL and surrounded by corn/soybeans, please send me a PM. |
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Where is the Tstat on your setup? is it under the filler neck?
edit:
I think I answered my own question. I'm guessing it's in here.
congrats on the promotion. Not so much on the dual responsibly. You're not selling anyone on being surrounded by corn.  [This message has been edited by KissMySSFiero (edited 06-30-2025).]
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fieroguru
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JUN 30, 08:41 PM
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| quote | Originally posted by KissMySSFiero:
Where is the Tstat on your setup? is it under the filler neck?
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THe thermostat rests inside a rubber o-ring type seal and fits in the machined groove right under the coolant fill point. When the coolant fill is bolted down, it compresses the seal for the thermostat.
This means that my LS4 coolant path is now like the SBC with the thermostat on the hot coolant exit from the engine vs. the cold coolant supply to the engine that typical LS engnes use.
| quote | Originally posted by KissMySSFiero:
congrats on the promotion. Not so much on the dual responsibly. You're not selling anyone on being surrounded by corn.
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I have been covering 2+ postions for most of the 3 years I have been at this location, so it isn't anything new... I just know that a local food mfg has been posting for an Engineering Manager for 6+ months and my last 2 engineer postings took about a year to fill, so it will be a slow process.
If being in the corn doesn't sound appealing, how about no emissions testing within 2 hrs.[This message has been edited by fieroguru (edited 06-30-2025).]
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Will
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JUL 01, 08:42 AM
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Do you ever make it to Chicago? I'll be there through the weekend.
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KissMySSFiero
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JUL 01, 09:44 AM
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| quote | Originally posted by fieroguru:
I have been covering 2+ postions for most of the 3 years I have been at this location, so it isn't anything new... I just know that a local food mfg has been posting for an Engineering Manager for 6+ months and my last 2 engineer postings took about a year to fill, so it will be a slow process.
If being in the corn doesn't sound appealing, how about no emissions testing within 2 hrs.
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I live in Florida. No emissions anywhere around, and you may taking a beating if you suggest it. Nowhere in FL is more than 74 miles from the ocean. Negative: We have a few crazy people and hurricanes.
We have 7-8 engineering req's open for my program alone. We're always understaffed. But at least we're not underpaid, most of FL is. My last job took a year to find a suitable replacement for a Communications systems engineer.
How's product development for your water pump and accessory drive coming? Is it something you're still considering selling?
I'm currently running the SC3800 in my choptop but I'm wanting another 100HP.
I found an alternator that may work for a flipped cantilever setup for the LS4 but I'm not a big fan of the look and worry about belt squeal.
I think I can use aluminum plate and spacers welded together. I should be able to pivot the alternator for tension.
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SSFiero@Aol.com[This message has been edited by KissMySSFiero (edited 07-01-2025).]
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fieroguru
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JUL 01, 06:09 PM
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| quote | Originally posted by Will:
Do you ever make it to Chicago? I'll be there through the weekend. |
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I sometimes have meetings at the AON center in downtown, but normally don't get to Chicago unless I have to be there for something.
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fieroguru
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JUL 01, 06:37 PM
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| quote | Originally posted by KissMySSFiero:
How's product development for your water pump and accessory drive coming? Is it something you're still considering selling?
[/IMG] |
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Slooooooooooooooooooooooooooowwwwwwwwwwwwww.
I need to finish my CNC mill and learn 3D CAD to bring it to market.
The likely price point for the water manifold will be in the $500 to $700 range and the Summit Racing version is $199. Add in another $500 to $700 for the custom water pump, and the market starts to become very, very small. So these parts might just be something that makes my personal swap unique.
Once the CNC mill is operational and I can design parts in 3D CAD, I am sure my motivation will be more towards custom knuckles front and rear as I want them for my car.
| quote | Originally posted by KissMySSFiero:
I found an alternator that may work for a flipped cantilever setup for the LS4 but I'm not a big fan of the look and worry about belt squeal.
I think I can use aluminum plate and spacers welded together. I should be able to pivot the alternator for tension.
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Yeah, after having the AC and Alternator down low and hidden for 12+ years, I am not a fan of the cantilevered alternator setup, but it is by far the most common method utilized for the LS4 swaps.
In this thread I played around with the concept and found a tensioner solution so the alternator could be rigid mounted.
https://www.fiero.nl/forum/...1/HTML/094409-2.html
Just make sure you can install the belt without having to remove the alternator supports.
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