FRS 4.8 LS swap - Page 6 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

kurty85 · 10-08-2017, 07:22 PM

I mounted the knock sensors on the drivers side low where the 8x1.25 bolt hole is and on the passenger side in the timing cover hole at the top. There is no other 8x1.25 hole on the passenger side. I noticed vorshlash made a 8 to 10x.5 adapter when they built their frs ls swap. Could probably find a large head 10x1.5 bolt and drill and tap the top for 8x1.25. Majority of exhaust is finished now. Have to move the y-pipe section back to not hang too low in back of the transmission and connect it with the rest of the full blown 3" exhaust the car ran before.

all4spl · 10-09-2017, 10:47 AM

Toyota makes a knock sensor stud that would work perfect for you. Do some research on it as it will thread into our block and then the other is small enough for the knock sensor. Just use the gen 4 knock sensors instead of the gen 3 knock sensors.

kurty85 · 10-10-2017, 07:07 PM

Quote:

Originally Posted by all4spl

Toyota makes a knock sensor stud that would work perfect for you. Do some research on it as it will thread into our block and then the other is small enough for the knock sensor. Just use the gen 4 knock sensors instead of the gen 3 knock sensors.

The Toyota one I found was 12mm. I ordered two that are 8x1.25 to 10x1.5 46mm long so that should work fine.

kurty85 · 10-16-2017, 12:12 AM

Got it running finally. It was the red switched power lead for the ecm. Now it will start but backfires like crazy. Going to pull all the plugs today and check the coils and wires. Exhaust is finally finished too. Hardest part of the swap was the exhaust. Took me many tries to get it right. Just need to wire the fans and figure out this backfiring and I can go for a ride.

all4spl · 10-16-2017, 10:24 AM

I'm very excited for you bud!! so with the engine sitting further back, do you have room for a different intake other than the LS2? Maybe a Fast?

kurty85 · 10-16-2017, 09:20 PM

Quote:

Originally Posted by all4spl

I'm very excited for you bud!! so with the engine sitting further back, do you have room for a different intake other than the LS2? Maybe a Fast?

No the LS2 manifold will be fine. No need to spend 1k on a fast when im going to add boost anyway.

gtpvette · 10-17-2017, 08:04 AM

Need more pictures!!!!

kurty85 · 10-20-2017, 08:14 AM

Quote:

Originally Posted by gtpvette

Need more pictures!!!!

Sorry been very busy with moving houses. Solved the backfiring issue. The plugs on top of the coils were swapped from front to back. Looked at wiring diagrams and swapped them. Car runs perfect now. Need to tidy up some wiring and clutch line and raise the suspension up for the test drive. Cant believe I am this point. It has been since December since I last drove the car. I will post pictures soon.

all4spl · 10-20-2017, 10:38 AM

Hey what clutch slave did you go with? Fbody? Corvette?

kurty85 · 10-21-2017, 06:43 PM

Quote:

Originally Posted by all4spl

Hey what clutch slave did you go with? Fbody? Corvette?

I used an f body slave cylinder

kurty85 · 11-09-2017, 07:44 PM

Just completed the first real test drive. Cooling was great. Only thing is the clutch master cylinder throw needs adjusting and MRS device keeps dropping out(loose wire suspecting). Need to post more pics and get to tuning now.

ILLSMOQ · 11-09-2017, 08:21 PM

Pics? Need some video!

kurty85 · 11-10-2017, 10:17 PM

Latest pics. Taking video now and filling up the tank.

kurty85 · 11-10-2017, 11:49 PM

https://m.facebook.com/story.php?sto...&id=1128542140

10-17-2017, 08:04 AM	#77
gtpvette Senior Member Join Date: Mar 2015 Drives: 2015 FRS - FFR GTM Location: Key Largo, FL Posts: 788 Thanks: 241 Thanked 829 Times in 381 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Need more pictures!!!! __________________ 2015 FR-S - One Day I'll Finish The Swap

11-10-2017, 10:17 PM	#83
kurty85 Senior Member Join Date: Jun 2017 Drives: 2014 FRS LS Swap Location: Talofofo Guam Posts: 133 Thanks: 5 Thanked 102 Times in 49 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Latest pics. Taking video now and filling up the tank. Attached Images

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10-08-2017, 07:22 PM	#71
kurty85 Senior Member Join Date: Jun 2017 Drives: 2014 FRS LS Swap Location: Talofofo Guam Posts: 133 Thanks: 5 Thanked 102 Times in 49 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I mounted the knock sensors on the drivers side low where the 8x1.25 bolt hole is and on the passenger side in the timing cover hole at the top. There is no other 8x1.25 hole on the passenger side. I noticed vorshlash made a 8 to 10x.5 adapter when they built their frs ls swap. Could probably find a large head 10x1.5 bolt and drill and tap the top for 8x1.25. Majority of exhaust is finished now. Have to move the y-pipe section back to not hang too low in back of the transmission and connect it with the rest of the full blown 3" exhaust the car ran before.

10-09-2017, 10:47 AM	#72
all4spl Senior Member Join Date: Mar 2016 Drives: 2013 FR-S Location: Chesapeake, VA Posts: 400 Thanks: 61 Thanked 78 Times in 60 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Toyota makes a knock sensor stud that would work perfect for you. Do some research on it as it will thread into our block and then the other is small enough for the knock sensor. Just use the gen 4 knock sensors instead of the gen 3 knock sensors.

10-16-2017, 12:12 AM	#74
kurty85 Senior Member Join Date: Jun 2017 Drives: 2014 FRS LS Swap Location: Talofofo Guam Posts: 133 Thanks: 5 Thanked 102 Times in 49 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Got it running finally. It was the red switched power lead for the ecm. Now it will start but backfires like crazy. Going to pull all the plugs today and check the coils and wires. Exhaust is finally finished too. Hardest part of the swap was the exhaust. Took me many tries to get it right. Just need to wire the fans and figure out this backfiring and I can go for a ride.

10-16-2017, 10:24 AM	#75
all4spl Senior Member Join Date: Mar 2016 Drives: 2013 FR-S Location: Chesapeake, VA Posts: 400 Thanks: 61 Thanked 78 Times in 60 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	I'm very excited for you bud!! so with the engine sitting further back, do you have room for a different intake other than the LS2? Maybe a Fast?

10-20-2017, 10:38 AM	#79
all4spl Senior Member Join Date: Mar 2016 Drives: 2013 FR-S Location: Chesapeake, VA Posts: 400 Thanks: 61 Thanked 78 Times in 60 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Hey what clutch slave did you go with? Fbody? Corvette?

11-09-2017, 07:44 PM	#81
kurty85 Senior Member Join Date: Jun 2017 Drives: 2014 FRS LS Swap Location: Talofofo Guam Posts: 133 Thanks: 5 Thanked 102 Times in 49 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Just completed the first real test drive. Cooling was great. Only thing is the clutch master cylinder throw needs adjusting and MRS device keeps dropping out(loose wire suspecting). Need to post more pics and get to tuning now.

11-09-2017, 08:21 PM	#82
ILLSMOQ Senior Member Join Date: Oct 2016 Drives: 2017 WR BLUE BRZ Location: San Jose Posts: 641 Thanks: 608 Thanked 502 Times in 249 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Pics? Need some video!

11-10-2017, 11:49 PM	#84
kurty85 Senior Member Join Date: Jun 2017 Drives: 2014 FRS LS Swap Location: Talofofo Guam Posts: 133 Thanks: 5 Thanked 102 Times in 49 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	https://m.facebook.com/story.php?sto...&id=1128542140

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