Ls4 mr2
08-27-2010, 01:29 PM
#1
Ls4 mr2 I just wanted to say thanks for all of the great info and occasional laughs that I've found here in this forum. I've been reading through alot of threads on here since earlier this year to research for my project, and then finally signed up so I could ask about an adapter for my throttle body (If anyone wants to share their thoughts on my build, I'd welcome any ideas & constructive criticism). The majority of folks on here (LS4 section) seem fairly helpful to one another concerning mods & such. I'm in the midst of installing an LS4/4T65-E from an '06 Impala SS into my '91 MR2. It fits great so far. I found a place that will take my SS & MR2 axles, and using my measurements will make some custom axles out of the parts for only $135. I talked briefly with someone at HP tuners as well as a guy at Cartuning about my project and I'm even more excited to get this moving. Based on what I've read here, I picked up an LQ4 intake w/TB and rails/injectors. At first I was going to re-pin the TB connector, but it seems that simply using an adapter for my LS4 TB would be a better idea. The new intake manifold is BIG, but I still have no clearance issues. I'm thinking of making an adapter out of steel. Any thoughts on that? I'm thinking of at least doing that to get it running, and get one of the adapters I saw around here later. I'm planning on getting a shift kit for the trans, but I've read that some folks have concerns with doing that in combination with using an HP tune on the TCM. Anybody have any solid info on this? Well, that's enough ?'s for now. I'm curious to see how this project will be received here. Most of the people in the MR2 circles prefer their boosted 4 cylinders, a few like their V-6 swaps, and fewer have endeavored to try a V-8. I've been wanting to do a V-8 in one of these for years and have now found the ideal setup. There's a guy that posts here that is running an LS4 in his Fiero, and he has seen 12.9 1/4 times with light mods and an HP tune. I know my car won't be liked by the majority, but it'll have to be respected. That's all that matters, right? To all who may end up offering advice, be it good or critical, thanks in advance. To any who want to hate, I'll be ready to run soon.....
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Jr Alejandro (02-27-2021)
08-27-2010, 04:16 PM
#2
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We're a small community here, we do what we can to further ourselves. 
Good luck with the build, it should be a BEAST!
EDIT: As far as the TB, I have no clue, I'm just a lurker...
Good luck with the build, it should be a BEAST!
EDIT: As far as the TB, I have no clue, I'm just a lurker...
08-27-2010, 04:40 PM
#4
Thanks! It will be! The car has already been modified a bit, so it'll handle the power just fine. It's also going to end up only 150lbs or so heavier than when it had the turbo 4 in there.
Here's a couple of pictures:
Before I swapped the intake
My MR2
Unsatisfactory powerplant
I can't wait to roll....Then boost it into the low 11's, maybe 10's
Here's a couple of pictures:
Before I swapped the intake
My MR2
Unsatisfactory powerplant
I can't wait to roll....Then boost it into the low 11's, maybe 10's
08-27-2010, 04:57 PM
#5
Yeah, he has commented on my build thread on his forum. He seems pretty cool. He gave me a bit of food for thought. You're right, this will be sick. Now I just have to get some MR2 ABS equipment to haul this thing back down from triple digits without buying new tires every week (front ones, anyways). I'll be sure to plaster vids/pics of the (finished?) car as soon as it's driving.
08-27-2010, 05:23 PM
#7
Yeah, he has commented on my build thread on his forum. He seems pretty cool. He gave me a bit of food for thought. You're right, this will be sick. Now I just have to get some MR2 ABS equipment to haul this thing back down from triple digits without buying new tires every week (front ones, anyways). I'll be sure to plaster vids/pics of the (finished?) car as soon as it's driving.
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08-27-2010, 06:42 PM
#8
Funkster: I ended up parting out everything Toyota specific (mechanically and electronically speaking) to folks on the MR2 boards. I was motivated to clear it all out!
08-27-2010, 09:25 PM
#9
It is fairly tight, but not too bad. I'm in Portland, Oregon. You'll see it on youtube as soon as it's running. I'll be posting links.
Funkster: I ended up parting out everything Toyota specific (mechanically and electronically speaking) to folks on the MR2 boards. I was motivated to clear it all out!
Funkster: I ended up parting out everything Toyota specific (mechanically and electronically speaking) to folks on the MR2 boards. I was motivated to clear it all out!
I still have a black hardtop headliner I am trying to get rid of.
I can't bring myself to throw it away.
08-28-2010, 11:54 AM
#13
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08-28-2010, 12:55 PM
#14
For laughs I started to come up with a few of my own: General Yota (it would need to be green), GMR2, or MR8. All I know is it'll be fast, so it'll likely have my forum name. It's why I made it up in the first place. Even with the turbo 4, it was fast. The engine was built (25k in it), and whooped on a few cars before I got tired of only having any real power while in boost. I'm thinking of buying another LS4, and another 4T65-E to build up for BIG numbers. That way I can enjoy the first setup after using it to engineer the install, then swap in the others when I'm ready to really fly. I'm planning on boosting the first setup just enough to have some fun, maybe with a shop fabbed STS style turbo system. Should see 11's with light boost. Plenty fast for now and probably on the edge of what the stock trans can take, even with a lighter car. We'll see. For now I'm just focused on the major parts of the install. I'll definitely post about any progress I make.Thanks Mels SS, and 94SS06GXP. I'm shooting for a scorcher with this. After it's fully done, I doubt it'll be very street friendly
08-28-2010, 06:16 PM
#17
08-28-2010, 09:08 PM
#19