SM105K's Ownership/Performance/Maintenance Thread

[kryptto]

Alright. Here is where I added the nozzle pre turbo. Just drilled and tapped 1/8 not and ran the nozzle in.
View attachment 88148
View attachment 88149
Next was mounting the pump and running the line to the engine bay. I drilled through the fire wall above the passenger side wire loom with same size drill bit as the hose. It was a tight fit but it worked great.

Mounted the pump to the kick panel. Yes there quite of bit of fittings. I will fix that in the future.
View attachment 88150
Next I soldered wires for the ground and power to the pump from the activation button.

View attachment 88151

Next, I just add the hose through the top of the igloo thermos and secure it to the seat with a zip tie.
View attachment 88152

I did relocate the AEM nozzle to the charge pipe post turbo. I will run that tonight and try to get some data. Probably buy another nozzle kit like this and add that pre turbo with the smallest cc jet I can get.
View attachment 88155

I also went and pulled the plugs out of the engine and took my bore-a-scope and check out the pistons. Plugs were good and the pistons are doing great.

View attachment 88154

F n awesome, thanks for sharing.

 

[SM105K]

Lexus Update: Okay here are some data points. After moving the nozzle post turbo, I did some pulls to compare the pre turbo and after turbo. Posted some pics of the data logs as well. The bold lines are air temp going into the manifold.

Just boost, 21.7 psi, starting temp 120 @3500 rpm, ending temp 147 @ 6500 rpm, steady .75 lambda across pull

Pre turbo: 22.5 psi, starting temp 120 @3500 rpm, ending temp 136 @ 6500 rpm, steady .73 lambda across the pull. Data log below.



Post turbo: 23.0 psi, starting temp 120 @3500 rpm, ending temp 126 @6500, steady .68 lambda across the pull. Data log below.



Post turbo worked better as we all know. It kept the temp in the pull cooler and longer. The alcohol added some octane as it richened the pull up as well. Nothing alarming but.......

All in all a pretty good investment for the lower air temps, added octane, and ease of use. I still want to test a couple of things. I want to add ice to the 50/50 alcowater mix and re-run the data. I am also kicking around the idea of adding another nozzle which will be just a dedicated pre turbo nozzle and looking at the data of both. I really want to get the IAT's as close to ambient as possible.

 

[kryptto]

Okay here are some data points. After moving the nozzle post turbo, I did some pulls to compare the pre turbo and after turbo. Posted some pics of the data logs as well. The bold lines are air temp going into the manifold.

Just boost, 21.7 psi, starting temp 120 @3500 rpm, ending temp 147 @ 6500 rpm, steady .75 lambda across pull

Pre turbo: 22.5 psi, starting temp 120 @3500 rpm, ending temp 136 @ 6500 rpm, steady .73 lambda across the pull. Data log below.

View attachment 88158

Post turbo: 23.0 psi, starting temp 120 @3500 rpm, ending temp 126 @6500, steady .68 lambda across the pull. Data log below.

View attachment 88159

Post turbo worked better as we all know. It kept the temp in the pull cooler and longer. The alcohol added some octane as it richened the pull up as well. Nothing alarming but.......

All in all a pretty good investment for the lower air temps, added octane, and ease of use. I still want to test a couple of things. I want to add ice to the 50/50 alcowater mix and re-run the data. I am also kicking around the idea of adding another nozzle which will be just a dedicated pre turbo nozzle and looking at the data of both. I really want to get the IAT's as close to ambient as possible.

This is such interesting and awesome results. Glad that pump is working well. Please keep showing the data.

 

[SM105K]

SHO Update: True to form, the SHO ate another battery. That makes it roughly every two years. I bought the car May of 18, replaced the battery 9/19, again 9/21, and now 8/23. Yes I am using a AGM battery, and resetting everything through Forscan. Seems with the electronics and extreme heat, is it battery hungry.

 

[kryptto]

I know here in FL - has to be the same as AZ - 3 years is max on a battery. Add the heat from our engine and the power hungry requirements.... 2 years I expect at this point.

 

[Zpak]

SHO Update: True to form, the SHO ate another battery. That makes it roughly every two years. I bought the car May of 18, replaced the battery 9/19, again 9/21, and now 8/23. Yes I am using a AGM battery, and resetting everything through Forscan. Seems with the electronics and extreme heat, is it battery hungry.

Right on schedule. My beef is getting Ford to admit they’re bad. It’s a battle with them every two years. Though, I haven’t paid for the last three.

 

[kryptto]

Right on schedule. My beef is getting Ford to admit they’re bad. It’s a battle with them every two years. Though, I haven’t paid for the last three.

I deal with Costco, they have flooded and AGM Interstate batteries, I just keep swapping them out before the 48mo warranty.

 

[76FoMoCo]

I'm in the same boat 2-3 years max! Just know when the sync says shutting down to save battery time for a new one.

 

[kryptto]

This Sat going to the exhaust shop to cut out the 3rd cat, stock resonator, and stock mufflers, swapping out with 2 straight pipe magnaflow resonators, and two straight pipe mufflers. Will try and grab some pics. Time to finish my exhaust system, took me forever.

 

[SM105K]

Lexus Update: Moved the water/alcohol pump to up near the front bumper. I bought a new windshield wiper reservoir. Drilled and tapped the reservoir. Ran all the lines and now it is complete. Works pretty decent.

 

[SM105K]

Lexus Update: I worked on the DIY Ice Water sprayer. I placed the water tank where I originally installed the alcohol/water pump. I ran the lines, and as of right now I don't have any data about how good this system will work. It does work, I just dont know the extent. I did hook up the three power toggle switches. From left to right. Power for the water alcohol pump, CO2 IC Sprayer, and DIY Water Sprayer. Works pretty good. All three have different activation buttons. Two of them are pictured for the CO2 and Ice Water Sprayer in front of the shifter. Pretty trick I think. I did rub a hole in my main CO2 line because I am an idiot. I need to get that fixed too.....

Ice Water Tank. Super easy to add ice and water.

Nozzles secured and pointed towards the IC.


Power toggle switches for all of the systems.



Activation buttons for the DIY Water Sprayer and CO2 Sprayer.

 

[kryptto]

Lexus Update: I worked on the DIY Ice Water sprayer. I placed the water tank where I originally installed the alcohol/water pump. I ran the lines, and as of right now I don't have any data about how good this system will work. It does work, I just dont know the extent. I did hook up the three power toggle switches. From left to right. Power for the water alcohol pump, CO2 IC Sprayer, and DIY Water Sprayer. Works pretty good. All three have different activation buttons. Two of them are pictured for the CO2 and Ice Water Sprayer in front of the shifter. Pretty trick I think. I did rub a hole in my main CO2 line because I am an idiot. I need to get that fixed too.....

Ice Water Tank. Super easy to add ice and water.
View attachment 88380
Nozzles secured and pointed towards the IC.

View attachment 88381
Power toggle switches for all of the systems.

View attachment 88382

Activation buttons for the DIY Water Sprayer and CO2 Sprayer.
View attachment 88383

Hahaha

 

[SM105K]

Lexus Update: Took the Lexus back to the dyno today. Been working on the tune. When I got the car it was tuned on 91 by Ryan Woon. It made 440 hp and 414 tq on 91 octane @ 17 psi. To make a direct comparison, first pull on 16.7 psi made 496 hp and 439 tq on E50. So big win there. I have been running the boost up to 27 psi. However, today even with the duty cycle maxxed on the boost controller it would only muster 22 psi. Pretty sure I have a boost leak. However at 21.4 psi she cracked out 567 hp and 485 tq. Not too bad. Pretty sure with the extra 5 psi (when I find it) it should crack 625 hp which will be cool.

The stock rev limiter is set at 6800 rpm which is why there is such an abrupt drop on the dyno graph. I can't raise the limiter without taking the stock computer out and having someone tune it. However, I think the 6800 rpm limit is probably helping keep the internals in the motor and saving the old R154 trans.

All in all with just a fuel change, some good tuning from Shane, and 5 psi more we added 127 hp and 70 tq to the tire. Also....it didnt blow up. LOL.

 

[kryptto]

Lexus Update: Took the Lexus back to the dyno today. Been working on the tune. When I got the car it was tuned on 91 by Ryan Woon. It made 440 hp and 414 tq on 91 octane @ 17 psi. To make a direct comparison, first pull on 16.7 psi made 496 hp and 439 tq on E50. So big win there. I have been running the boost up to 27 psi. However, today even with the duty cycle maxxed on the boost controller it would only muster 22 psi. Pretty sure I have a boost leak. However at 21.4 psi she cracked out 567 hp and 485 tq. Not too bad. Pretty sure with the extra 5 psi (when I find it) it should crack 625 hp which will be cool.

The stock rev limiter is set at 6800 rpm which is why there is such an abrupt drop on the dyno graph.

All in all with just a fuel change, some good tuning from Shane, and 5 psi more we added 127 hp and 70 tq to the tire. Also....it didnt blow up. LOL.

View attachment 88384

Thanks for showing the proof behind the work.

 

[SM105K]

Thanks for showing the proof behind the work.

I have always tried to be as transparent as possible with all of my builds with proof and data. Things haven't always worked out as I thought they would, but it has been a pretty cool experience with both of these platforms.

 

[kryptto]

I have always tried to be as transparent as possible with all of my builds with proof and data. Things haven't always worked out as I thought they would, but it has been a pretty cool experience with both of these platforms.

I appreciate you sharing your data. It's beneficial and interesting. It will help me decide my next steps as well.

 

[SM105K]

Lexus Update: I also came straight home and painted my intercooler black. I think it looks great.

Before:


After: If you aren't looking for the IC you probably won't see it. If you know, then you know.



I think it looks bad ass. Subtle but...like I said, "If you know, you know."

 

[SHOthyme]

Love it, but once you get the boost leak figured out I need to see what it runs in the 1/4 on a prepped track, please for the love of God tell me that's on the list!

 

[SM105K]

Love it, but once you get the boost leak figured out I need to see what it runs in the 1/4 on a prepped track, please for the love of God tell me that's on the list!

That is not on the list with the current transmission. It will probably only go high 12's if I was lucky. The transmission is super clunky and hard to shift quickly. It drops out of boost each shift and takes a while to recover. Also, it has been making a whining sound since I bought it. However, it is still a blast to drive. Complete polar opposite of the SHO.

When the transmission decides to give up, I am going to TH400 swap it. Trans brake, two step, the whole nine yards. Then I will take it to the track and see what it will do.

 

[SHOthyme]

That is not on the list with the current transmission. It will probably only go high 12's if I was lucky. The transmission is super clunky and hard to shift quickly. It drops out of boost each shift and takes a while to recover. Also, it has been making a whining sound since I bought it. However, it is still a blast to drive. Complete polar opposite of the SHO.

When the transmission decides to give up, I am going to TH400 swap it. Trans brake, two step, the whole nine yards. Then I will take it to the track and see what it will do.

So it's way down on the list, that's all you had to say, it made the list.