FAST LSX 102 Install Questions
Thread Starter
Joined: Aug 2004
Posts: 11,258
Likes: 146
From: Pace, FL
FAST LSX 102 Install Questions So, I took my MAP off my old intake and decided to install in the stock LS1 location on the back of the manifold. So, I used a 3/8" drill bit and drilled the hole. No problem.
The issue is now putting it back together. I didn't notice before, but it doesn't look like the top shell sits flush all the way around with the bottom shell. Is that a problem? I put some RTV back near the MAP location as FAST recommends, but pulled it apart to check that the top and bottom were sealing correctly (and that the RTV didn't ooze over into the interior of the manifold). All looks well. It just won't sit flush all the way around.
The other question was the bolts used for securing the top shell to the bottom. It says to use medium thread locker and torque down to 70-89in/lbs. Does anyone actually do that? Isn't that more or less snug? And no, it seats fine front and rear where the bolts are, but the sides are where it looks like it's not seated flush.
The issue is now putting it back together. I didn't notice before, but it doesn't look like the top shell sits flush all the way around with the bottom shell. Is that a problem? I put some RTV back near the MAP location as FAST recommends, but pulled it apart to check that the top and bottom were sealing correctly (and that the RTV didn't ooze over into the interior of the manifold). All looks well. It just won't sit flush all the way around.
The other question was the bolts used for securing the top shell to the bottom. It says to use medium thread locker and torque down to 70-89in/lbs. Does anyone actually do that? Isn't that more or less snug? And no, it seats fine front and rear where the bolts are, but the sides are where it looks like it's not seated flush.
I used thread locker, no wrench...that torque is crazy high if you actually try it on those wimpy plastic parts. I did not notice any fitment issues. I did deburr all the intake runners where the casting flash creases the o ring because I was being ****.
Maybe post a pic? Did you snug it down in the pattern?
Maybe post a pic? Did you snug it down in the pattern?
Thread Starter
Joined: Aug 2004
Posts: 11,258
Likes: 146
From: Pace, FL
I did snug down in the pattern. The front and rear are flush. The sides are not. I figure the gasket isn't being compressed and hope that when I secure to the block, it will do it?
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