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90 Daytona 2.5 T1. I'm trying to figure out how to replace the stock rubber
vacuum "block" for a better term, pictured below. The large vacuum line is
what feeds the baro/map, FPR and such. There are also two small hard plastic
lines that come off of it and go...somewhere, damned if I can figure out where.
It's not clear from the diagram. Anyway, when I get into boost, the big line
blows off!!! Not sure if it's because of another problem or that the rubber is
so old and oily. Anyway, I really wanted to replace all of it with a vacuum
block as described and suggested in other well written threads. Unfortunately,
none of the threads are for the old T1 2.5. This must be a 90/2.5 only deal because every time I go to the JY I have never seen another one like it. Any
help or suggestions would be appreciated.
 

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Purchase a 5 or 6 port vacuum manifold, a 1/4 - 1/4 npt brass hose barb, and 4 or 5 1/8 - 1/4 hose barbs and use it to replace that dammed rubber block and you won't have any more problems. Total cost would probably be $25 - $30
 

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For lack of better pictures you can see a blue air manifold sitting on top of the valve cover on my buddies shelby charger, I have the exact same put in my daytona, vastly superiour to the rubber one and you can mount it how you like.

 

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