My mistake, I meant to say "reliable, streetable 200 hp". Good point,
you can get 200hp out of a 6 no problem, but I don't think it would be
too good on the street. Well, maybe it could be done with forced
induction, electronic fuel injection, and crank-triggered ignition.
But then you are talking serious bucks!
However, I don't think I'm way off on my $2,000 estimate for 170 hp.
Head work: $900
Header and exhaust: $300
Triple carbs: $400
1.65 Roller rockers: $500
Cam: $160
Dynoed by Goodparts at 170 crank horsepower. That's $2260 for the
go-fast parts. All of this can be easily installed by the DIY-er, so
labor costs aren't an issue.
Maybe we can make a commercial out of this....
"Head work, $900. Roller rockers, $500. Finally blowing that infernal
Miata away on the drive to work, priceless."
Tim Holbrook
1971 TR6
--- "Robert M. Lang" <lang@isis.mit.edu> wrote:
> Date: Tue, 18 Jun 2002 15:06:58 -0400 (EDT)
> From: "Robert M. Lang" <lang@isis.mit.edu>
> To: Timothy Holbrook <tjh173@yahoo.com>
> CC: 6pack@autox.team.net
> Subject: Re: Fwd: RE: Possible engine swap for Tr6
>
> On Tue, 18 Jun 2002, Timothy Holbrook wrote:
>
> > While engine swaps sound like fun sometimes (I love the idea of the
> > Honda S2000 engine in a Spit - 8500 rpm redline, 240hp, and Honda
> > reliability, in a car that weighs less than a ton and handles like
> > crazy!!), you definitely want to do some research before tackling a
> job
> > this big. I would strongly recommend reading some Grassroots
> > Motorsports back-issues. They discuss this topic quite a bit, and
> did
> > an extensive (and exPensive!) series on putting a Mazda rotary into
> a
> > Spit. Great result, but tons of work, frustration, and MONEY. I
> would
> > also recommend checking out Dan Master's newsletters and club
> dedicated
> > to engine swaps in British cars. There's a website, but I forget
> what
> > it is.... You can get around 170hp out of the Triumph 6 cylinder
> > without too much problem (head work, header, triple strombergs,
> cam,
> > roller rockers), for about $2,500. This may be a bargain when
> compared
> > to an engine swap, and you'll have a fun TR6! But if you are
> looking
> > for serious, reliable horespower (200+), my opinion is you'll need
> an
> > engine swap.
>
> Actually, you can get around 200 reliable horsepower from a TR6, but
> it
> will not be tractable and it'll cost a lot of money. To make it
> reliable,
> you need Carillo rods, high compression and a cam. Forget about
> streetability.
>
> That having been said, if you can pull engine management into the
> picture,
> you can tune the tractability issues, but I doubt that the motor can
> be
> made very streetable.
>
> That having been said, I spent some time talking with a person from
> IL
> name Eric Quakinbush at Mid-Ohio... he's running PI and 10:1 on the
> street
> with nor problems. I don't know what he's using for pistons, but
> chances
> are with that setup that if any detonation occurs, things will go
> downhill
> _real fast_.
>
> But I'll tell you what... the $2500 number is _way too low_. Make
> that
> number above $5k and then we're talking. $15k if you want the whole
> shooting match.
>
> BTW, the stock TR6 rear end seems to be okay for up to 200 HP. I've
> not
> broken any gears in the race car (yey, knock wood), they were
> "pre-broken"
> for me. :=)
>
> As for the engine swap thing, this is a pure personal thing. I would
> not
> buy a TR6 with a V8 in it, for example, but as a tinkerer, the idea
> of
> making one fit has a certain amount of appeal. Just remember on any
> project like this - you'd better like the final product, because
> you'll
> never sell it for what it'll cost you to do! If you don't beleive me,
> drop
> Tim Suddard a line at GRM. They put a _ton_ of buck$ at the Ro-Spit.
>
> > Tim Holbrook
> > 1971 TR6
>
> C ya,
> rml
>
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