 Boat and Trumpet Install on IDTP Carbs, Special Tool Required? |
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| DennisV |
  Aug 14 2026, 07:18 AM
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#1
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Senior Member  Group: Members Posts: 993 Joined: 8-August 20 From: Santa Rosa, CA Member No.: 24,575 Region Association: Northern California 
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I am assembly IDTP carburetors. I have trumpets (aka velocity stacks) and also boats (bottom air cleaner connecting piece). Are they both meant to be used at the same time?
If so, how do you tighten the nut (8mm ATF)? I don't see room to get any conventional wrench or socket on there. Is there a special tool required? I'm probably missing something obvious. Top is what I understand to the be stacking order. Below an example of where the nuts need to go.   |
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Replies(1 - 1)
| mskala |
Aug 14 2026, 07:27 AM
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#2
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R Group: Members Posts: 1,959 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None
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For me, I got an 8mm deep socket (1/4" drive) and needed to cut it down a bit,
so the end of it is below the top of the trumpet. Then use a 1/4" extension on that. It helps to be either a wobble extension or at least fairly 'loose'. |
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