Ls1 v8 mr2 - MR2 Owners Club Message Board
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post #1 of 20 (permalink) Old March 13th, 2017, 07:47 Thread Starter
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Ls1 v8 mr2

Hello every one this is my first post on MR2OC. This is my 92 MR2 I bought as a roller. I have this chevy 5.3 "ls" which I re wired and flipped the intake to suck in from the back.
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post #2 of 20 (permalink) Old March 13th, 2017, 07:53 Thread Starter
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To make it fit, I had to do a ton of cutting. Click the link to see the destruction. But it does fit.

https://youtu.be/FAudx-WJLaw
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post #3 of 20 (permalink) Old March 13th, 2017, 12:30
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somebody got bored.

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-NA parts & Turbo Parts
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Let me know what you need

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post #4 of 20 (permalink) Old March 14th, 2017, 16:33 Thread Starter
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After making space for the V8, i made space for the porsche trans axle. Getrag 2.2 6 speed
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post #5 of 20 (permalink) Old March 15th, 2017, 23:01
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Omg this is sick! I wish I could do the same with a Lotus. Watching!
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post #6 of 20 (permalink) Old March 16th, 2017, 08:31
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Good job! It looks like a ton of work but keeping looking towards the final product.
Keep posting updates on here and youtube.
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post #7 of 20 (permalink) Old March 16th, 2017, 14:23 Thread Starter
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Thank you guys! yes, this is a ton of work. I was looking for a long term build that would keep me busy.
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post #8 of 20 (permalink) Old March 16th, 2017, 14:30 Thread Starter
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Another issue i faced was shortening the overall length of the V8. To do this, I removed the water pump and built a narrow manifold to flow water in and out. I will use a remote electric water pump to flow coolant. Also, I am using a corvette harmonic balancer (its short) and only running an alternator off this pully. Here is a pic. The engine was also re wired to run as a stand alone system and i later flpped the intake manifold to suck in from the rear.
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post #9 of 20 (permalink) Old March 17th, 2017, 04:25
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It's weird, I came across your videos on YouTube a few days ago and then later that same night you posted here. Looking like a crazy build, how much does that cross member weigh?
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post #10 of 20 (permalink) Old March 17th, 2017, 14:44 Thread Starter
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it weighs about the same as the OEM one. I have not weighed them to find out the difference yet.
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post #11 of 20 (permalink) Old March 17th, 2017, 14:59 Thread Starter
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Here is the trans axle from a 2002 boxster s 6 speed
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post #12 of 20 (permalink) Old March 17th, 2017, 16:30 Thread Starter
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Here is what was done to fit the trans axle.

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post #13 of 20 (permalink) Old March 19th, 2017, 09:22 Thread Starter
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So now it is time to address the subframe issue. the OEM one interferes with the bottom of the porsche transaxle so it is time to build one from scratch. I used the oem frame to build a jig which created mounting positions to the frame and suspension points (4). Then I connected these points with tube steel and plate.
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post #14 of 20 (permalink) Old March 19th, 2017, 09:27 Thread Starter
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subframe pics
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post #15 of 20 (permalink) Old March 21st, 2017, 06:09 Thread Starter
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Here is the full video on the subframe build.

https://www.youtube.com/edit?o=U&video_id=RM4lXhWWl7E
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post #16 of 20 (permalink) Old March 21st, 2017, 06:19 Thread Starter
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Here are some pictures of the shifter install. The shifter is from a boxster S and sits up way to high. I had to cut some of the MR2 floor out as well as shorten and lift up the cable mounts to tuck everything in. It may still be to hide under the center console trim (which i do not have for test fitment. It does shift awesome though.
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post #17 of 20 (permalink) Old March 21st, 2017, 06:23 Thread Starter
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As i mentioned previously, I had to build a water manifold. here are some pictures. This will be used with a remote electric water pump.
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post #18 of 20 (permalink) Old April 3rd, 2017, 15:08
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This is great stuff so far. amazing work.
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post #19 of 20 (permalink) Old April 5th, 2017, 01:19
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Quote:
Originally Posted by scantron View Post
Here is the trans axle from a 2002 boxster s 6 speed
Any idea on how much horsepower this trans can handle?
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post #20 of 20 (permalink) Old April 5th, 2017, 06:13 Thread Starter
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The horsepower is not the issue. They only recommend 300 ft lb of torque. The good news is people are using this trans with a LS3 crate motor putting out 375 ft lbs with no issue other than breaking drive shafts.
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