Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

Z32 MAF leak (anyone else?)

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Old 04-16-2010, 12:45 PM
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Z32 MAF leak (anyone else?)

So since I am getting 6psi pressure drop I did a boost leak test today, hooking up a compressor to my charge pipe and blocking off the ends.

I found leaking from my meth injection nozzles (fixed).

But also the Z32 maf was leaking, about a year ago I had fixed this leak, basically the top part of the maf (the square part) seperated from the rest of the body, so I put QuikSteel all over. Now I discovered that it cracked the QuikSteel all around, along the edge, I dont know if i should try a stronge epoxy or what but this sucks.


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Old 04-16-2010, 02:40 PM
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Avoid the quicksteel. Zip ties and silicon are your best bet. Epoxy would work a well, but no quicksteel.
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Old 04-16-2010, 03:44 PM
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Originally Posted by ObsidianIce69
Avoid the quicksteel. Zip ties and silicon are your best bet. Epoxy would work a well, but no quicksteel.
Yeah the quicksteel is just to brittle. I bought epoxy for plastic, took some pictures of how it looks when you take off the lid if anyone is curious:





I might still put zip ties on it.
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Old 04-16-2010, 04:26 PM
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I had to take apart the MAF cover on my '93 Altima earlier this year (very similar other than flow rate) to check the lead contacts and all they used (tough to get separated!) was black RTV it looked like. I had some clear silicone laying around so I went with that. I don't think you'll have any troubles with it...

Any higher temp RTV would be great due to underhood temps but with the MAF being where it is, I don't think even regular silicone will break down from heat...


Jeremy
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Old 04-16-2010, 08:10 PM
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Thanx for the heads up, I am hoping the epoxy I used will work, I also put two zipties around it. If it dosnt work again, i might have to get another maf or do something else. I am going to be pushing 15-20psi through this thing.
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Old 04-16-2010, 11:29 PM
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maybe its time to go with a MAP sensor and barometric /air-temp

eliminate the MAF all toghter ?
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Old 08-15-2010, 01:08 PM
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I am having the same problem any updates on how the epoxy is holding up.
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Old 08-21-2010, 07:38 AM
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Where the MAF's purchased new or used? Curious to see why they are leaking from there.
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Old 08-21-2010, 08:11 AM
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Originally Posted by maxprivate
Where the MAF's purchased new or used? Curious to see why they are leaking from there.
used
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Old 08-21-2010, 08:28 AM
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Oh, streetz maf still leaked after trying to fix it.

I dunno if anyone has bought one new, I think they are like 300-400 bucks
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Old 08-21-2010, 11:01 AM
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That is a lot. Know I see why most get them used. Well you can always buy another used one if you can't fix it.
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Old 08-21-2010, 11:26 AM
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rtv and zipties have been working so far
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Old 08-22-2010, 07:12 AM
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After using the plastic epoxy, it hasnt leaked so far.
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