When my hardtop is on, my engine and/or exhaust has an annoying booming resonance around 2750 RPM. It gets pretty tiring driving at that RPM for extended periods. I have made sure all the rubber mounts are good, I have put matting under the carpets and Dynamat on the inside of the firewall, but the entire car body simply becomes a resonating chamber at that RPM. Higher or lower RPMs are a lot smoother. The exhaust is stock, BTW.
With the top off, it is much quieter at that RPM. Doug --- Stuart Greenwood <[EMAIL PROTECTED]> wrote: > Each engine might have a different sweet spot > dependant on how well the rotating bits are > balanced. and/or how it is wearing. When I bought my > car the engine had never been out of the car. It ran > best at 4000 rpm. which was about 70 mph with the 3 > rail non overdrive gearbox. My brother in law had a > English Ford Granada with a V4 engine. It was > horrible as it came up to 3000 rpm but above that it > smoothed out nicely and ran like a top. Your messages not reaching the list? Check out http://www.team.net/posting.html === This list supported in part by The Vintage Triumph Register === http://www.vtr.org === Help keep Team.Net on the air === http://www.team.net/donate.html === unsubscribe/change address requests to [EMAIL PROTECTED] or try === http://www.team.net/cgi-bin/majorcool === Other lists available at === http://www.team.net/mailman/listinfo === Archives at http://www.team.net/archive === http://www.team.net/the-local === Edit your replies!
