[MR2] Mk I: worth the effort?
BPeitzke at Netwood.net
Sun May 24 22:29:52 EDT 2009
Wish I could find a way to certify one in CA.
From: mr2-bounces at mr2.com [mailto:mr2-bounces at mr2.com] On Behalf Of David
Sent: Sunday, May 24, 2009 12:20 PM
To: Steve Bagdon
Cc: mr2 at mr2.com
Subject: Re: [MR2] Mk I: worth the effort?
On Sun, 24 May 2009, Steve Bagdon wrote:
> I presume as long as you have the correct ECU, you can accomplish
> anything. Perhaps I was more referring to the ECU, then the wiring
Yeah, making your own ECU is tricky. Wiring is relatively
straight-forward, as long as you have the schematic, and those are available
online. My friend printed ours on a plotter, so it's big enough to lay out
the harness on, which was cool.
> I've only seen one 20v in person, many many years ago, one of the
> first I've heard of that had the full factory ECU (and not a USDM ECU,
> not using all of the 20v functionality).
There's no point, IMO, in using a 16v ECU with a 20v motor. Although,
that said, it's really hard to find good 16v 4ages, and they cost as much as
a 20v, so if you were desparate...
The 20v 4age is absolutely awesome motor, fwiw. 165-70 hp from 1587cc,
with a 9,000 rpm redline, and of course the 5v head... in a twenty year old
engine! That'd be impressive today, in a production motor. And on top of
that, it's tough as hell. We continually overheat the engine in our racecar
( long story ) and it still won't die. I took the _green_ flag of the last
race of the season with the temp gauge pegged, intending to win or blow it
up trying. I won. The motor is still fine.
Everyone who even sort-of likes the 4age should try a 20v.
> I'm tempted to follow up, yet anyone have a short bullet-point list of
> things to help identify *which* 20v it is, and what the cost is to
> find a factory ECU?
If the valve cover is black, it's a blacktop, if not, it's a silvertop
ECUs are available on eBay for ~$160. I think the ECUs come in more
variety than the motors do, since there are manual and automatic versions of
the computer ( plus the ST/BT distinction ).
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