Hey Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
TR3driver
Great Pumpkin - R.I.P
Offline
Re: Alternator Conversion for a TR4
Fans do vary, but as I recall, Hayden does not recommend their 12" as sole cooling fan for a 2.2 liter motor. Perhaps moving less air for their diameter is the reason they aren't as loud?
Also, IMO a properly sized fan shouldn't run very much. In reasonable ambient temps (ie less than 100F), I only needed mine in stop-n-go traffic, or the first stop after getting off the freeway.
<div class="ubbcode-block"><div class="ubbcode-header">Quote:]4) We've been having trouble breaking alternator mounts on the 3A. It seems to develop a visible vibration in the alternator around 2.5krpm.[/QUOTE]My problems weren't so severe, but there was a visible vibration at certain engine rpm. I fixed the problem by adding a spacer between the original generator mounts, and a long bolt to run through the alternator and both mounts. Also had to drill the rear mount to accomodate the bolt (which was only Grade 3 but large enough to fill the hole in the alternator). Eliminated both the visible vibration and the problems I was having with bolts backing off.
FWIW, I used a 16" Hayden. I could hear the noise if I listened for it, but generally it was unobtrusive. I ran with only a manual switch for many years, and kept forgetting to turn it offPeterK said:
Fans do vary, but as I recall, Hayden does not recommend their 12" as sole cooling fan for a 2.2 liter motor. Perhaps moving less air for their diameter is the reason they aren't as loud?
Also, IMO a properly sized fan shouldn't run very much. In reasonable ambient temps (ie less than 100F), I only needed mine in stop-n-go traffic, or the first stop after getting off the freeway.
<div class="ubbcode-block"><div class="ubbcode-header">Quote:]4) We've been having trouble breaking alternator mounts on the 3A. It seems to develop a visible vibration in the alternator around 2.5krpm.[/QUOTE]My problems weren't so severe, but there was a visible vibration at certain engine rpm. I fixed the problem by adding a spacer between the original generator mounts, and a long bolt to run through the alternator and both mounts. Also had to drill the rear mount to accomodate the bolt (which was only Grade 3 but large enough to fill the hole in the alternator). Eliminated both the visible vibration and the problems I was having with bolts backing off.
