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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!timbuk.cray.com!walter.cray.com!eastrg2!dilmore
- From: dilmore@eastrg2.cray.com (Robert James Dilmore)
- Subject: Re: Freewheeling Engines
- Message-ID: <1992Dec18.092927.6611@walter.cray.com>
- Lines: 37
- Sender: dilmore@eastrg2 (Robert James Dilmore)
- Nntp-Posting-Host: eastrg2-gate.cray.com
- Organization: Cray Research, Inc.
- References: <BzFHAJ.IDo@news.cso.uiuc.edu>
- Date: 18 Dec 92 09:29:27 CST
-
- In article <BzFHAJ.IDo@news.cso.uiuc.edu>, tabg2553@uxa.cso.uiuc.edu (Thomas A. Brunner) writes:
- |>
- |> The subject of free-spinning versus non-free-spinning engines seems
- |> to show up quite often. If I may, the general answer is check with
- |> the service manual OR a knowledgeable mechanic OR the car company.
- |> My suggestion would be if you have some money and some time, replace
- |> the belt, making sure everything is timed properly and put back on
- |> correctly, and try starting the car.
- |>
- |>
- |> In summary, I would suspect that most engines with timing belts are
- |> free spinning. Those OHC engines with chains probably are not. A
- |> manufacturer may build an engine with a belt that does not free spin.
- |> The manufacturer has a great deal of confidence in his design, and you
- |> have a big bill if he is wrong. With my engine, GM had a buyback program
- |> going, so I got a new one--the company ate the $5700 for the engine, and I
- |> got a new clutch installed for just the parts cost.
- |>
- |> Thomas Brunner
- |> Mechanical Engineering Grad Student
- |> University of Illinois at Urbana-Champaign Autolab
- |> tabg2553@uxa.cso.uiuc.edu
- |>
- |>
-
- You got it right the first time and blew it in the summation.
-
- If your car is an interference engine follow or exceed the manufacturers
- maintenance schedule. The summation is absolutely 100% false. VW 9a 16v engines
- will cost you a cool 2600.00-3200.00 if you wait for the belt to break.
-
- In summary, ALWAYS ask a trusted mechanic, not the NEWSgroup. Exceed the
- maintenance schedule (my opinion). Don't wait for it to break,if it is
- interference. If it is not and you can afford to be towed from wearever you
- are to wearever you are going, let it break.
-
- Robert Dilmore
-