MXZ 670 BEST PIPES WORTH THE MONEY??

Dan Pumper

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Sep 4, 1998, 3:00:00 AM9/4/98

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I need to know the best pipe for a mxz 670 is out there an dalso is it
even woth it could i really gain 10 hp. or is that just a sales pitch.
thanks in advance.
dan

Richard Kay

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Sep 5, 1998, 3:00:00 AM9/5/98

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Dan,
Piping a 670 isn't worth the hassle, or money. You will probably see
about a 5-8 hp gain, and repetitive temp. related jetting changes becomes
a constant nag. Detonation becomes a factor too, as pipes pushes the
redline up around 8300 rpm. Plan on a set of EGT's also, if you want to
get serious with pipes.
Rich K.

William J Hendrickson

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Sep 5, 1998, 3:00:00 AM9/5/98

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I also read in a magazine (Snotech??) that installing pipes on the 670
can actully make LESS hp. They give you a big list of stuff you have to
do to make twin pipes work, and it is costly..Then it says the
piston/cylynder tolerances are so close that adding twins might burn up
the motor.

Scott
98 Mxz 670
97 ZR 580

catz...@webtv.net

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Sep 5, 1998, 3:00:00 AM9/5/98

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Scotts right, The MXZ will probably need to be ported also, met someone
with twin pipes on his 670 last season, he said after he finally figured
out he needed to get it ported, it did run ok, just way too much money
spent in new parts before the porting was done. : (
====================================

Jeff B Up in Maine

MAINE
The way life and snowmobiling should be.

MT

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Sep 8, 1998, 3:00:00 AM9/8/98

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I noticed that Powerhouse racing did not make the Sept. 2nd issue of Snowweek's
High Performance Guide. Is there a reason, or are they a "fly by night"
operation?

mxz wrote:

> On Fri, 4 Sep 1998 10:51:06 -0500, "Dan Pumper"

> <d.pu...@tri-cdesign.com> wrote:
>
> > I need to know the best pipe for a mxz 670 is out there an dalso is it
> >even woth it could i really gain 10 hp. or is that just a sales pitch.
> >thanks in advance.
> > dan
> >
>

> Take the money you were going to spend on pipes and run, don't
> walk, to Belleville Ontario. Talk the folks at Powerhouse racing in
> Bellevill (http://www3.sympatico.ca/teampowerhouse/). Piping your 670
> will be the start of making your machine the most fickle machine on
> the snow. Powerhouse racing has proven packages for the 670. I know,
> I have one. They did up my 98 mxz670 to the tune of 133 hp/93ftlb
> torque (corrected values for you nit pickers) using stock carbs, and
> exhaust system. Reliable as the orignial factory setup and very
> stealth in appearance.
>
> Steve LaMunion

Michael Hart

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Sep 9, 1998, 3:00:00 AM9/9/98

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mxz wrote in message <35f5ddf9.3992604@news-server>...

>On Tue, 08 Sep 1998 17:00:24 -0500, MT
><mwtho...@mailhost.chi.ameritech.net> wrote:
>
>>I noticed that Powerhouse racing did not make the Sept. 2nd issue of
Snowweek's
>>High Performance Guide. Is there a reason, or are they a "fly by night"
>>operation?
>>
>

> Ask the publishers of snowweek.
>______________________________________________________
>Steve LaMunion

One would assume that list is merely a past advertisers list....

There are lots of performance dealers who don't advertise with the mags.