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v6 engine swap questions

Old 05-23-15, 12:56 PM
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v6 engine swap questions

I'm sorry if this has been asked before, I usually search good. But id like a quick answer. If you can post a definitive answer, or link to a thread that does, ill close this immediately. I want to do an engine swap. I wanted a v8. I still might do a 5.0, but I figured a v6 would be more lightweight, and I could just keep upgrading it to the point of a v8 afterwards. I was thinking a 4.0 cologne from a b2200, and still really like the idea. Read that they have good low end torque, but not so much on the high end. I don't mind that, I'm only looking for something to get me from 0-60 pretty quick, and the 5th gear for cruising.


also saw a klze was a good option for it. I suppose my real question would be would the klze work with the stock tranny? (1985 gsl). The cheapest donor would be a 98 626, but its an automatic, and that's not gonna fly.


4.0 would be the cheapest quickest option, other than swapping it to a carb.


could wait for a cheap probe, I know there's one sitting near me, just not sure if its for sale.


anyone put a carb on a klze before? I prefer the sound of a carb, and it'd be easier than figuring out wiring.
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Old 05-26-15, 07:17 PM
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Hi I'm a V8 swap guy, but I think I may be able to answer a few of your questions. Fist off I would recommend ditching the cologne v6 idea, not much of an aftermarket for it and you will have to pay big $$$ to exploit it's limited HP potential, and the same goes for the klze. As far as weight goes I wouldn't worry to much, rotaries, especially when you add accessories, water, oil, etc, are way huskier then you would think, my FB gained 80lbs according to the dumps scale after a ford 5.0 swap (with iron heads). Now then if you have some thing against V8's you still have the option of going with GM's excellent 4.3 liter V6, great off the shelf power, great aftermarket, great transmission options, simple to wire and run, not only can you put a carb on it but you can buy a nice performance carb, intake, cams, heads, you would have many options, oh yeah there were even factory turbo 4.3's found in the gmc cyclone and typhoon. You can also go with the nissan VG series V6 found in the 300zx in either turbo or non turbo flavors, but you will certainly need to wire up fuel injection.

Now then, as far as the trans situation goes the stock unit wont really mate up to any thing else due to the rotary's "crank shaft" being mounted in the center of the engine rather then the bottom like in a piston motor, so yeah you're going to need a new trans unless you intend on swapping in another rotary.

There is a reason why v8 swaps are so popular, no matter what you are going to spend a **** load of time and money on an engine swap, even if you get the engine for free, literally **** loads of time and money! So you mind as well go for the better engine, why spend V8 time and money getting some 180hp V6 toad up and running when you could've had an LS1, SBC, SBF, etc.

And no I have never heard of anyone doing a carbed Klze, and I don't think you would want try making such a thing, to be brutally honest. Also don't lose sight of the small things, if you did carb a Klze or cologne v6 how would you run the ignition? if they have distributors does the ECU control ignition advance and retard? will you need a custom oil pan to clear the crossmember? going with an auto trans will it require a transmission control unit to function? going with a manual trans does the shifter line up to a reasonable spot in the center console, will you be able to close the hood because the exterior dimensions of over head cam engines are fawking enormous! I choose the ford 5.0 for my car due to cost of the engine and trans, aftermarket support, and what made it win out against the small block chevy was the fact I could save almost $1000 by not needing a custom oil pan and headers.

EDIT:
If you want to go with a 4 banger there is the mitsubishi 4G63, why do people always forget about this wonderful option for cheap HP. (wiring fuel injection required)

Last edited by aa35199; 05-26-15 at 08:07 PM.
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