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Thread: TBI vacuum leak at manifold

  1. #16
    Fuel Injected!
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    Feb 2015
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    I got my engine machinist to tap the two holes and put Allen head grub screws in there, then he staked around them so they wouldn't come out.
    I don't now how critical it really is, it just looked like it made sense to me.
    I bought the plate to block off the EGR and also had to block off the hole on the opposite side that also looked related to EGR, you can buy a genuine part to block it off but once again for that particular part the shipping to NZ was quite a lot so I go the machinist to make something, I suspect I didn't save much in the end.

  2. #17
    Fuel Injected!
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    Feb 2013
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    Quote Originally Posted by Kitch View Post
    I looked at trying to add a hose from the salad bowl to the rocker cover but in the end I just fitted a breather into the rocker cover.
    Not to get too off topic, but I went a little different way with mine back in the day. Running a mass air flow sensor on the TBI and used a Caddy intake bonnet that had a built in power bowl.
    Attached Images Attached Images

  3. #18
    Fuel Injected!
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    In the photo it looks like you're running the PCV valve off the housing above the TBI unit?

  4. #19
    Fuel Injected!
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    Mar 2012
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    PCV is hooked onto the adapter plate (manifold vac). The line off the air cleaner/bonnet generally goes to the other valve cover.

  5. #20
    Fuel Injected!
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    Apr 2017
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    I built mine today and got it installed. There's a store called Tuesday Morning near us that sells discount home goods - set of four metal mixing bowls for $11.99. I got the second biggest one and my wife got the other three. The one I used nested perfectly under one of the ring insets of the OEM air cleaner's base. And I cut out the overhang of the base so the transition is smooth and I have the biggest opening possible into the mixing bowl. I went ahead and drilled a hole for the PCV breather tube in the mixing bowl. I had all the parts to do that and I would have had to go buy a valve cover breather so I thought I might as well. And I cut the bottom flange off the choke ring, leaving about 1/8" to 1/4" of the ring, and then installed that into the base of the mixing bowl, in the hole that I had cut out. Gave the something to rest on at the TB and also gave it rigidity, it was pretty flimsy with its bottom cut out!

    IMG_6032.jpgIMG_6035.jpgIMG_6036.jpgIMG_6042.jpgIMG_6041.jpg
    Last edited by Daveo91; 1 Day Ago at 11:27 PM.

  6. #21
    Fuel Injected! CDeeZ's Avatar
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    May 2012
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    Jokelahoma
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    If we're not careful, between all the salad bowls we've cut up and Chris' bowl pirated off of a Caddy, we're going to run Hypertech out of the market for those TBI powerchargers!

  7. #22
    Fuel Injected!
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    Apr 2017
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    Quote Originally Posted by CDeeZ View Post
    If we're not careful, between all the salad bowls we've cut up and Chris' bowl pirated off of a Caddy, we're going to run Hypertech out of the market for those TBI powerchargers!

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