Author Topic: 54/1451 2GR swap  (Read 15082 times)

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Offline BDA

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Re: 54/1451 2GR swap
« Reply #60 on: Tuesday,March 24, 2020, 04:11:18 PM »
More very interesting stuff, Clifton! Does it go as good as you expected? Is the lag significant? I'm guessing it made it a bit quieter.

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #61 on: Tuesday,March 24, 2020, 05:27:10 PM »
Yes, as good as I was expecting power wise. I knew I was boost limited on the factory ecu and compression so I wasn't going to get a lot more out of it. It is quite a bit quieter. I had a lot of intake noise. All 2GR's do with open filters and sound the same. Not like a V6 at all. It is a more stealth now. You can here the spool up and then just air rushing. Two mufflers keep it pretty quite too.

Offline Chuck Nukem

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Re: 54/1451 2GR swap
« Reply #62 on: Wednesday,October 06, 2021, 06:33:13 AM »
Clifton,

What an amazing car you have built! How has it been running since you put the turbo in?

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #63 on: Wednesday,October 06, 2021, 10:45:11 AM »
Thanks Chuck.

It's good now. I was having too much boost creep even after porting the .63 wastegate I was running (internal) so I went with a larger GT3584 turbo with an internal gated .82 turbine housing. This compressor map better suits the engine flow and low boost.

I was also having too much knock, according to my retarded timing logs so I piggybacked the factory ecu with a Mapecu3. A Lotus Evora S guy was kind enough to log his timing, MAF, boost, and RPM from Torque Pro. They run 5 psi on the same engine so I used his timing and added to that after 5 psi. I'm running about 7 psi that creeps to about 8.5 psi at redline. Same as the new 430 Evora's that make 430 hp but they do it with cats and supercharger so I'm at least 430 plus a few. I also put in some 440cc AMG injectors as it was too lean with more boost. Lotus runs a 550 but they aren't the same style. These fit with some injector harness adapters but I still had to bump the fuel pressure a little higher. It's not too much that they throw a code without tuning them down though. My long terms fuel trims are around -21% but the afr is perfect under boost. I wanted to avoid intercepting and tuning the MAF signal, just timing under boost.

It's stupid fast. I have traction control set at 12% slip and it barely comes on in first, according to the graph. Just two little cut spikes if I take off at 1500 rpm.

I vented the radiator out the top most recently. It is fully ducted. I found that it still slowly got hot though. I had air that was getting trapped on the outlet of the engine. I used an infrared thermometer and found the cooler spot on the hose. I have added a 3/16" air bleed from that spot to my swirl tank. The interior is so much cooler now. Even with a/c it still got warm on the driver side with speed. There was no stopping the hot air getting in around the peddles and steering hole in the frame with a front mount radiator. I hate the hood vent but it had to be done.

The timing map picture is what I pull. I have logged a lot and know what the factory timing is at WOT and now under boost at every rpm. If anyone has an OBDII car, the blue tooth plugs are $10 on ebay and the Torque Pro app is $5.


Offline Clifton

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Re: 54/1451 2GR swap
« Reply #64 on: Sunday,October 20, 2024, 04:35:31 PM »
I had a road coarse autocross coming up on 10/13 and my car was a little loose and hard to catch at speed. On the track days, SCCA says 4 tires off and you are done. Oversteer at regular slower autocross is easier to catch. I've tried running the front bar full stiff but it just makes too much corner entry understeer and mid corner is still loose. So I decided to try a 650lb front spring. I'm on 1.9" shocks and the stiffest 1.9" is 400lbs that I was already running. I found some 1.9 to 2.25 adapters and some 1" 2.25 spacers and then some 650lb 2.25" springs. It worked. It will still step out if lifting on entry but it's pretty neutral mid corner now.

I usually run lower pressure but last road coarse, the car just got worse. This time I took temps and pressure on every run to get it dialed in for next time.

I didn't record my last and fastest run but my 3rd run was only a second slower. I ended up 10th overall out of 80 cars.

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #65 on: Sunday,October 20, 2024, 04:42:31 PM »

Offline TurboFource

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Re: 54/1451 2GR swap
« Reply #66 on: Sunday,October 20, 2024, 06:05:59 PM »
 8)
The more I do the more I find I need to do....remember your ABC’s …anything but chinesium!

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #67 on: Monday,October 21, 2024, 03:30:08 AM »
I have a 330mm Sparco steering I love but I wanted to try running a smaller diameter steering wheel mostly for autocross and being able to turn more than 180 degrees without taking a hand off.

I got a 305mm undrilled Alpha wheel. The factory steering wheel hub is very light and I had an extra but to get it to work I figured I could use a 1/4" instead of 5mm fastener. Once I tapped for 1/4", I realized I F'd up. I should have helicoiled for the standard 5mm. I bought some  1/4" aluminum bolts, cut the heads off, drilled on a lathe and helicoiled these for 5mm. This wheel and hub saved 24 oz.

Yesterday was a regular autocross. The wheel worked great.
https://youtu.be/RV1mz4lGUfc

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #68 on: Tuesday,October 22, 2024, 02:48:17 AM »
A few pics from Sunday's event.

The Elan is a wicked fast D Mod car.


Offline TurboFource

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Re: 54/1451 2GR swap
« Reply #69 on: Tuesday,October 22, 2024, 03:23:45 AM »
 8)
The more I do the more I find I need to do....remember your ABC’s …anything but chinesium!

Offline BDA

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Re: 54/1451 2GR swap
« Reply #70 on: Tuesday,October 22, 2024, 07:52:33 AM »
 :I-agree:

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #71 on: Tuesday,November 12, 2024, 05:30:04 AM »
My ACT street clutch wasn't hold in the taller gears. I hate puck disks for street cars but a 2GR performance supplier came out with a disk with a marcel. It's so much more streetable than a straight puck disk. I got it in time for this weekend. SCCA event on Sunday and a PA track AX on Monday. I also went with A052's in teh front and I decided to try some Vitour P1's on the rear as A052's don't come wide enough. They are 245/35 vs 245/40-15 and look a little strange compared to the front.

Offline Clifton

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Re: 54/1451 2GR swap
« Reply #72 on: Tuesday,November 12, 2024, 06:28:41 AM »
On the way home Sunday from SCCA, I got a miss twice at WOT and it wasn't traction control. On the way to the track on Monday morning, same thing. I lost a coil on my first run and went into full limp mode with zero pedal. I had to turn it off and back on, dump the clutch and keep going. I turned TC off and shifted before the rev limiter to avoid the cylinder miss induced limp mode. It didn't help. This time the ecu said the cylinder, 6. We went to Autozone at lunch and I paid $96 for a $20 coil and got 3 good runs in the afternoon. Only two cars were faster (by 1.1" and .3") and both were GT3 RS's with SCCA national winning drivers. The car is finally pretty dialed now to were I can abuse it and push 100% without it trying to go off backwards with any mistake.

I finally got the GPS working in the video. I've done a 3.6 second 0-60 on Dragy with a passenger. Probably about the same here at the start.


https://www.youtube.com/watch?v=vFwPGmttnwY
« Last Edit: Tuesday,November 12, 2024, 06:34:04 AM by Clifton »

Offline BDA

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Re: 54/1451 2GR swap
« Reply #73 on: Tuesday,November 12, 2024, 06:50:07 AM »
Congratulations!! Your car does indeed seem to be dialed in!  :trophy:

Offline berni29

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Re: 54/1451 2GR swap
« Reply #74 on: Tuesday,November 12, 2024, 10:12:32 AM »
Hi

What a great car and story. Thank you for posting.

Berni
Also have some +2's