Evinrude 437cc

[Big Job]

Hi group

I built a Ragwing RW-6 and was thinking of using 1972 Evinrude 437cc engine,
rebuilt of course, from a Evinrude TW-30-Q snowmobile. It's a nice looking
twin apposed cylinders But I think might only be 30hp.

Does anyone know anything about this engine, and can the hp be increased
safely.

I also have a polaris 340cc but would like to get closer to 40 hp.also
considering 1/2 VW.

Any help would be appreciated. Thanks Joe




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[Big Job]

Clare
That's to bad, it looks and sound like (437cc) the perfect engine. But it
proves looks can be misleading.
Probably to old of a design to increase the hp? What ashamed. Back to the
drawing board (or junk yard) Thanks again Joe

<clare at snyder.on.ca> wrote in message
...
> On Fri, 31 Mar 2006 23:39:26 -0500, "Big Job"
> > wrote:
>
> >Hi group
> >
> >I built a Ragwing RW-6 and was thinking of using 1972 Evinrude 437cc
engine,
> >rebuilt of course, from a Evinrude TW-30-Q snowmobile. It's a nice
looking
> >twin apposed cylinders But I think might only be 30hp.
>
> From what I remember it was rated at 22HP back in 1972 - I remember it
> was significantly lower than the 440 Rotax.
> I have looked at them before too, with aircraft use in mind. Their CDI
> ignition never was reliable enough to leave the ground with though,
> and is terribly expensive to replace/repair.
> >
> >Does anyone know anything about this engine, and can the hp be increased
> >safely.
> >
> >I also have a polaris 340cc but would like to get closer to 40 hp.also
> >considering 1/2 VW.
> >
> >Any help would be appreciated. Thanks Joe
> >
> >
> >
> >
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News==----
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Newsgroups
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[clare at snyder.on.ca]

On Sun, 2 Apr 2006 08:42:20 -0400, "Big Job"
> wrote:

>Clare
>That's to bad, it looks and sound like (437cc) the perfect engine. But it
>proves looks can be misleading.
>Probably to old of a design to increase the hp? What ashamed. Back to the
>drawing board (or junk yard) Thanks again Joe
>
><clare at snyder.on.ca> wrote in message
...
>> On Fri, 31 Mar 2006 23:39:26 -0500, "Big Job"
>> > wrote:
>>
>> >Hi group
>> >
>> >I built a Ragwing RW-6 and was thinking of using 1972 Evinrude 437cc
>engine,
>> >rebuilt of course, from a Evinrude TW-30-Q snowmobile. It's a nice
>looking
>> >twin apposed cylinders But I think might only be 30hp.
>>
>> From what I remember it was rated at 22HP back in 1972 - I remember it
>> was significantly lower than the 440 Rotax.
>> I have looked at them before too, with aircraft use in mind. Their CDI
>> ignition never was reliable enough to leave the ground with though,
>> and is terribly expensive to replace/repair.
>> >
>> >Does anyone know anything about this engine, and can the hp be increased
>> >safely.
>> >
>> >I also have a polaris 340cc but would like to get closer to 40 hp.also
>> >considering 1/2 VW.
>> >
>> >Any help would be appreciated. Thanks Joe
>> >
>> >
>> >
>> >
>> >----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet
>News==----
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>Newsgroups
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>=----
>>
>> *** Free account sponsored by SecureIX.com ***
>> *** Encrypt your Internet usage with a free VPN account from
>http://www.SecureIX.com ***
>
>
>
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Some of the Polaris 340 engines were closer to 50HP, but at an ungodly
RPM.
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