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- Newsgroups: alt.snowmobiles
- Path: sparky!uunet!caen!sdd.hp.com!hp-col!chuck
- From: chuck@col.hp.com (Chuck Rice)
- Subject: Re: DG pipes
- Sender: news@col.hp.com (Usenet News)
- Message-ID: <1992Nov17.220116.25012@col.hp.com>
- Date: Tue, 17 Nov 1992 22:01:16 GMT
- Distribution: na
- References: <1992Nov17.142407.18117@tellab5.tellabs.com>
- Organization: HP Colorado Springs Division
- Lines: 20
-
- don@tellabs.com (Donald Leonard) writes:
- > Does anyone have any direct or indirect experiance with DG
- > performance pipes for a Polaris 650??? Are they worth the added expense???
- > I have a chance to get a used set for a real good price but I don't
- > know much about them. How do they rate against say... PSI, Starting
- > Line, or AAEN???
- >
- Dyno Tech has tested a bunch of them in their pipe shootouts. Some don't
- look to bad, however some do. I just quickly thumbed through the Dyno
- Tech issues but didn't see any DG test results on a 650. Wait a minute...
- here it is:
-
- 91 Indy 650, carbs
- Stock HP = 97.3 @ 92dB @ 8000 RPM
- DG pipes HP = 110.4 @ 100dB @ 9000 RPM
- No idea which version the DG pipes are
- The DG's were the worst of the bunch in this test
-
- 13 HP may be worth it if you can get a reasonable price and don't mind
- running the engine at 9000 RPM and have a good set of ear plugs.
-