v8 powered mr2 - Page 2 - MR2 Owners Club Message Board
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post #21 of 536 (permalink) Old August 4th, 2012, 14:08
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man i had trouble with the 3s fitting in a mk1, its ungodly to this about this in a mk2 lol!
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post #22 of 536 (permalink) Old August 4th, 2012, 21:12 Thread Starter
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Engine is out!!! Going to use the subframe and frame rails to mount this in my mr2. Should be fun.



Subframe with engine mount plates and sway bar:







This thing is like 300lbs lol, piece of crap;

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post #23 of 536 (permalink) Old August 4th, 2012, 23:36
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Are you doing an engine rebuild also or just swap??(subscribed)

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post #24 of 536 (permalink) Old August 15th, 2012, 21:13 Thread Starter
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Ready for measuring and cutting...



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post #25 of 536 (permalink) Old August 15th, 2012, 21:14 Thread Starter
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No engine rebuild, just straight swap... for now
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post #26 of 536 (permalink) Old August 19th, 2012, 00:25 Thread Starter
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I picked up the plasma cutter this morning. There is a big surprise though. I made an executive decision a few days back to change the design of the swap. Instead of cutting the firewall, I will be lengthening the wheelbase and moving the suspension components backwards.

The reasoning is this: Either way I have to cut vital frame areas of the vehicle to put the v8 in, and if I cut the firewall it means cutting into the protective cocoon that is designed to be the passenger cabin. Lengthening the wheelbase I only have to deal with essentially straight frame rails and my safety remains in tact. Even if the frame rails broke because of lengthening the wheelbase at least I wouldn't have to worry so much about having a v8 sitting inside the back of my face. Nor do I have to worry about excessive heat or noise from a home made firewall. I realize this means I will have to drop the motor to do any timing work but really, you think I care? That's what part of the fun is when owning a mid rear vehicle.

Now if you have negative comments ____ off, but if you have positive comments please let me know because half way through the day I thought I had turned my $10K car into a $100 pile of scrap metal. But then the results of my prior forethought showed me exactly what I had in mind when I began this journey, except a few inches further back (8"-10" to be exact, there is still forward or backward adjustment as of tonight, will be decided upon tomorrow morning when I start worrying about suspension placement). The A6 front frame can bolt to the firewall and have enough space between the engine and the firewall for rad lines and a gas filler neck. This gives me mounting points for the engine, solid frame rails from the firewall back (where the meeting place will be reinforced as well as the moved strut towers), solves an issue I had with sway bar hitting the transmission and allows me to drop the engine tranny combo on the a6 factory subframe from underneath the car. Overall I think it's a slick way to install (and my engine bay looks badass WITHOUT a motor lol ). As it sits tonight the front frame rails are bolted to the firewall in the right spots, the back is just hanging until I can get the suspension in tomorrow.





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post #27 of 536 (permalink) Old August 19th, 2012, 00:27 Thread Starter
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And this is where I finished tonight, the engine and transmission can actually bolt to this. Once I get my suspension set up I will add the right bracing to support the stretched wheelbase. I will update again as soon as I get some things sorted.





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post #28 of 536 (permalink) Old August 19th, 2012, 13:44
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wow, very ambitious.

I am glad you are under no illusions that to fit the Audi V8 longitudinally (it cannot be mounted transverse in any car), you have to cut an MR2 a LOT.

Also, Audi V8's are not rebuild-able. Basically, you can buy a new shortblock, and that's the only option to "rebuild" an Audi V8.

Here's Audi V8 aftermarket parts: http://www.034motorsport.com/engine-...8-c-28_64.html

The Audi Quattro transaxle you showed earlier are huge and heavy. I assume you will find a 2wd transaxle?

Where are you sourcing that trans?
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post #29 of 536 (permalink) Old August 19th, 2012, 13:50
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For those of you who want to get a sense of the size of the quattro trans:






also, a little inspiration:

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post #30 of 536 (permalink) Old August 20th, 2012, 22:19 Thread Starter
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Another 14 hour day yesterday. Had to give the plasma cutter back today so I needed to get everything done that I possibly could. 28 hours in 2 days is a good head start on this project haha, and I'm quite pleased with what I've accomplished so far. There were/are a few snags and nothing is connected or finalized or even close (everything is in position and just braced for a few more fitments and measurements). I initially started with the audi frame on the ground and tried making the strut mounts fit over top, but the whole thing was too unstable. Instead I flipped the struts upside down and built the whole thing from the bottom. This allowed me to work with the cross members as well as the two frames to see what was going to be needed. I still haven't decided on how to tie everything in but I have a few good ideas in my head. I'm always open to suggestions as always, I will work with the best knowledge I have available to me

The biggest problem I have right now is that the rear tie rod mount is not even close to being useable, and the tension rod mount is now way too far from the control arms. I'm hoping to figuring these out tomorrow. Things seem to other wise be shaping up nicely. Tomorrow I'm also hoping to figure out what metal bracing and tie in plates I will need to make this all happen. I'm pretty excited for the side profile as the length of the wheelbase is looking to be exactly where I would like it.

Also on a side note: Today I will finally get some sleep. It's been kind of crazy being in the garage for 14 hours straight, consuming massive amounts of monster energy drinks and pizza, coughing black wads of stuff from the smoke buildup due to the plasma cutter, dealing with the literally crippling reemergence of my carpal tunnel syndrome, and I'm sure there are other less interesting whiny things I could write of (plasma burns...). Just a little insight into the pains of a project like this :P







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post #31 of 536 (permalink) Old August 20th, 2012, 22:23 Thread Starter
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post #32 of 536 (permalink) Old August 22nd, 2012, 09:46
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Quote:
Originally Posted by widebodystarlet


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post #33 of 536 (permalink) Old August 22nd, 2012, 21:49 Thread Starter
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Hahaha, a lot of that will be getting trimmed off, it's just there to keep everything square. Although at the back the wheel arches are now about 6 inches wider than where the taillights tie into the quarter panels, on each side.
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post #34 of 536 (permalink) Old September 2nd, 2012, 10:40 Thread Starter
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Haven't really updated this build since the image post limit tends to frustrate me, so I will make an attempt to bring you guys up to date in photos:




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post #35 of 536 (permalink) Old September 2nd, 2012, 10:41 Thread Starter
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post #36 of 536 (permalink) Old September 2nd, 2012, 10:42 Thread Starter
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post #37 of 536 (permalink) Old September 5th, 2012, 12:04
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insane amount of work.. and it looks damn good.. I cant wait to see the final result.. and ____.. its gonna look sick and with the longer wheel base.. i can see you getting sick improvements down the track.. Good luck...

and damn making power on this thing gets expensive...

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post #38 of 536 (permalink) Old September 5th, 2012, 12:06
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Great job man! Keep updating!
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post #39 of 536 (permalink) Old September 6th, 2012, 09:29 Thread Starter
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Not going to ever make anything more than stock on this thing. The nice thing about extending the wheelbase is it will allow me to run a larger motor on a stronger transmission in the future (LS + g50 *evil laughter*). So now all I'm doing is taking great care to make sure the chassis is strong, will run it with the audi motor for a while until I get bored with the power or find a good deal on a g50. Updates will be coming in the next few days as I get REAL close to bolting in the motor
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post #40 of 536 (permalink) Old September 6th, 2012, 22:45 Thread Starter
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It's been a few days since I've touched the mr2 so I gave it a few hours of my life today. I managed to almost completely weld in two more frame pieces, it's looking pretty sweet. I'm picking up a crossmember tomorrow and spacer for the engine/transmission as well. Just need a clutch/flywheel, axles and hubs




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