Visual Difference between B&M 250 & 420
11-17-2004 | 10:24 AM
#1
Thread Starter
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Joined: Sep 2003
Posts: 589
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From: Ludington, Mi.
Visual Difference between B&M 250 & 420
I have a B&M 250, I am looking for a B&M Megablower 420 . Is there a way of telling
the differnce? The one I'm looking at, the owner say is a 420....but looks just like my
250? Is the actual size (casting) bigger? Any other distinguishing features?
Thank you,
Randy
the differnce? The one I'm looking at, the owner say is a 420....but looks just like my
250? Is the actual size (casting) bigger? Any other distinguishing features?
Thank you,
Randy
11-17-2004 | 03:27 PM
#3
Ginger or Mary Ann?
Joined: Oct 2000
Posts: 11,030
Likes: 9
From: L
Re: Visual Difference between B&M 250 & 420
A 420 is obviously bigger. Notice the difference in pulley sizes. Won't see no 250 with a pulley the size of what are used on the 420's. Not sure if a 420 has the carb plate like the 250's do. I'm thinking not.
a 250..........
a 250..........
Last edited by US1 Fountain; 12-02-2011 at 11:16 AM.
11-17-2004 | 06:36 PM
#4
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Joined: Jan 2003
Posts: 167
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From: Lawrenceburg, Indiana
Re: Visual Difference between B&M 250 & 420
The 420's, except the very early years around 1985, do not have a top plate. All 250 blowers use a top plate. 420 top pulleys use traditional 6 bolts where 250's do not.
