Why not us the M3 S14 engine in another swap too?
It's not heavy and probably not expensive as some
think it is.
> Yeah, I know it's not that simple. Gotta have more like 7 or 8
> connections into the harness. Really, that's all you need and several of
> those are just to feed the guages.
> I've installed an M3 motor into a 70s 2002 using the factory computer
> without problems. And, I'm hoping to advantage some of the stuff I
> learned doing that swap.
> But, my reason for choosing the SR is the simplicity. I think the factory
> did plenty well enough tuning the motor and I'm sure it isn't hard to
> reprogram the thing if I change my perspective.
> Yeah, I built a custom CR tranny for that M2002, but it was a race car
> (AutoX). The roadster is a street cruiser with emphasis on reliability and
> comfort. Add cost to round out my list of design priorities. The car was
> wicked fast with the U20, and I get to pick up a little power in the mix. I
> will be smiling.
> But, using the factory computer is miles easier and less expensive than
> using an aftermarket controller. I don't have to spend days or weeks
> programming fuel maps, etc. And, I really don't sacrafice much power.
> Seriously, to effectively top factory tuning requires days of dyno/gas
> analyzer time I couldn't even start to afford, and the improvements would
> be marginal. If I get bored, a SR20DET swap will be less than $3k
> away, and I bet I could recover much of the SR20DE investment to help
> with expenses.
> And, regarding the speed limiter - what do you suspect happens if there
> is no speed signal? I'm guessing there is no limiter. Since speed is not
> a fuel map input either no signal or constant signal will trick the
> computer so that it doesn't worry about speed. All I believe I need is a
> $20 part to drive the speedo cable.
> But we shall see, and I promise to share my results with the list. My
> motor SR20DE/5sp gets here Saturday. And, surprise, surprise I'm
> also pulling the U20/5sp on Saturday. I'm being pretty aggressive, but
> I'm betting that by this time next month ... I won't be wheeling a gas
> guzzling F150 <hopefully>.
> You might guess that I'm a wee bit excited - you would be correct. This
> has been burning me since the U20 quit in october, so it feels good to
> finally make some progress.
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