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Discussion Starter #1
I guess My fender flare thread wasn't enough to stir the hornets nest... So to really introduce myself, I'm gonna stuff a 3.8 mivec into the stealth.

I was drinking one night thinking about my first girlfriend back in Jr High school.... Then I grew a wild hair up the butt and said, I'm doing the 75 Full Mivec Engine swap. That ends that love story.

It has been done many ways already and I'll be doing this my way. This time around. I'll post up pics of progress as I go along just like the fender flare thread. I know I'm pushing some kind of limit here but it should be interesting to be 4th or 5th known to have done this swap. So far, its Been Itallo, Bdranck, and MichealMR2 that are known to be running Mivecs.

Unicorn engine aquired.




 

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There will be Blood!
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1,235 Posts
Interesting!
 

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Escaped
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Sigh. I want another block just to do this with.
 

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Show me your twins
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This should be interesting. Subbed!
 

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Discussion Starter #12
The car afformentioned in the inspirational pic is Bdranck's car. My build is a bit more budget friendly, using what I already have stashed in the basement lol
 

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Discussion Starter #13 (Edited)
First and foremost... The front engine mount, I plan on utilizing as many factory locations whether adding or fabricating brackets as needed. Since the Transmission on mounts one way to the chassis I won't go into any detail on that. But The OEM bracket that bolts to the 72 block does fit onto the 75 block with some creativity. That takes care of that issue.



As you can see in the next pic, the 75 motor mount bracket comes about as close as getting the hot chick in Chem class' phone number... needless to say you're gonna have to get crafty to get her digits.

 

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Discussion Starter #14
The Valve coves are great!, they can be swapped back and forth. That should'nt need much explanation, But attention must be given to the timing marks on the front (red) valve cover. Once you swap them, the mark will be on the transmission side. The rear head timing mark is a notch on the stamped metal sheild behind the cam gear cover. Also the lower intake manifold needs to be flipped 180* The boss that is used to bolt the gusset over the water pump will need to be trimmed 1/2" to clear.
 

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Discussion Starter #17
not sure what the stock 75mivec can handleto be honest. But I do plan on keeping the 10.0:1 compression and twin TD05 16G's. If my plans are correct it should lay down plenty of streetable power at very low boost levels. When I mean streetable, I mean fast ramping with a very flat torque curve.
 

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Discussion Starter #18
The 75 Mivec has a returnless fuel system utilizing pulswidth modulation of the fuel pump to regulate rail pressure. Well...my Stealth isn't that smart even with AEM. So without diving into the wallet just yet I took apart the 75 fuel rails to convert it to a return style. Although the shape is odd and it looks very restrictive, The inside cross section measures out to just a C-hair less than 1/2"! Not bad at all! The injector bosses on the other hand are lacking...

At a measely 1/4" the openings had to be bored out. They may have been sufficient for the 330cc stock injectors and NA but not enough for 1150's and Boost. I also added -6AN fittings to the ends to make it a 2 piece fuel rail with a detachable fuel loop to aid in disassembly and user friendliness. I'll add more pics as I go along.



The top is 100% stock 75mivec, the bottom is the 180* flipped and being modded. Notice the stock rail is all 1 peice and stamped/extruded/brazed steel. the bottom rails will be modular.
 
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