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Iab vacuum diaphragm

Garygin

Garygin

Regular Contributor
I found a vacuum diaphragm that I modified to use in replacement of the original one on a Honda 225. The original is not available unless you purchase the intake manifold cover to the tune of $700.00 plus which is total bs. The one I bought is 2-47154 available from NAPA auto parts. The one used on the Honda 225 is an exact match for a Acura legend . I believe the correct part number is 17129 pt 2000. But they are also discontinued. It was a PITA to modify, but to me it was well worth the time . I hope this helps anyone who is having the same problems.
 
It’s the least I can do . I have had so much help from others on this site, if I can help someone else that’s great
 
Garygin, might help to post what year Acura Legend this outboard is similar to for part searches? It may mean there is also a Honda car block too?

For discontinued parts, sometimes Rock Auto has aftermarket parts still available, it’s a good place to look up brands and part numbers too, they usually have a cross reference for the OE part numbers too. That information can be used to search eBay, Amazon, or to check with local auto parts suppliers.
 
NSDON said:
Garygin, might help to post what year Acura Legend this outboard is similar to for part searches? It may mean there is also a Honda car block too?

For discontinued parts, sometimes Rock Auto has aftermarket parts still available, it’s a good place to look up brands and part numbers too, they usually have a cross reference for the OE part numbers too. That information can be used to search eBay, Amazon, or to check with local auto parts suppliers.
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Sorry about that . 1995 to 2000 Acura legend. Also I did check Rock Auto. Every place I have looked the part is listed as obsolete or discontinued. Believe me I have exhausted my search. I have been looking every night for weeks.
 
vacuum 3.jpg
 
The butterfly's on 225's intake were frozen shut, I bought a real nice used one on Ebay complete with the diaphragm for $30, just another option.
 
I haven’t seen any under 100. The problem is how do you know if the vacuum is any good? Everything is good on mine except the vacuum diaphragm. So for 40 bucks I fixed mine. Glad you made out.
 
The original diaphragm had two small tears where it looks like it just wore out . That’s why the original looks the way it does because I took it apart
 
Yep, a spring only has so many "boing backs", a shock only has a given amount of "absorbing", a transmission only has so many shifts built in and a coat hanger wire has a limited number of bends.

Looks like you did a good fab job. Hope the solder holds.
 
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