Bon Ami & ring to cyl seating - Team Camaro Tech
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post #1 of 7 (permalink) Old Nov 4th, 02, 11:25 AM Thread Starter
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FYI, I came across this post on the Fiero Forum in a thread on Squeaky wipers. What to try? and thought it was interesting enough to post here.

<BLOCKQUOTE>quote:</font><HR>a little off subject. Bon Ami has lot o good secret uses. When GM brought out the first small block in 55 (265) they had a real problem with ring to cyl seating. Under a recall you know what the dealers did. Poured a little Bon Ami in it and ran it a little while, then changed the oil and filter, worked perfectly........not kidding.<HR></BLOCKQUOTE>
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post #2 of 7 (permalink) Old Nov 4th, 02, 12:04 PM
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I remember seeing a show on the History Channel about 55 thru 57 Chevys,and they talked about that.They said the Bonami roughed up the cylinders and seated the rings on the early 265s.On guy said Chevrolet had a Sevice Bulliton out back then to do just that.When I had my 55 Chevy a few years ago,A hard core Ford guy came up to me at a car show and asked me why I didn't build a 55 Ford.My reply was,I didn't know they built a 55 Ford..Ha Ha Ha..

69 Camaro SS 350 4 speed
71 Nova
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post #3 of 7 (permalink) Old Nov 4th, 02, 12:18 PM
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That is interesting, but you know machining techniques, pistons and rings have come a loooooong way since '55.

Can you still buy Bon Ami?
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post #4 of 7 (permalink) Old Nov 4th, 02, 02:21 PM
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Matt Jones
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Yup, Bon Ami is still available.

But don't ask if the machine shop stocks it! Ha!

1969 Base Camaro
Vortec 355, Perf. RPM, Demon Carb., TH-400
All sheetmetal is NOS GM
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post #5 of 7 (permalink) Old Nov 4th, 02, 02:31 PM
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Bon Ami really does work well on windshields. We used it a lot on new cars that had chattering blades.

We heard something about environmental fallout, and normal glass cleaners wouldn't cut it.

Don~ ZZ430DropTop
70 RS
67 RS/SS Convertible, 70 RS
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post #6 of 7 (permalink) Old Nov 4th, 02, 02:41 PM
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Let me tell you about bon-ami and rings. When double moly rings first came out they were terrible. The second ring would not wipe the cylinders correctly so they burned oil in large quantities. A guy I went to school with got the bright idea to use bon-ami to make the rings seat. He hooked up a can to the ported vacuum side of the carb and down the road he went. Buy the time he got back even the lifter bores were so oversize they couldn't be used without sleeving. If you think your motor is too tight definately the cheapiest way of loosening it up.

[This message has been edited by oger (edited 11-04-2002).]
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post #7 of 7 (permalink) Old Nov 5th, 02, 04:33 AM
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My first garage job was rebuilding construction equipment and we used bon ami to seat the rings quickly so the machines could go back into service. I would never do/recommend that for our street machines. The reason is worked was due to its abrasiveness.

Rick Dorion
69 RS Conv,355,Autogear M22,4.10's and I don't worry about stone chips ( yet ).
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