Petcock Gasket on IMS Tank

11 replies to this topic
  • captbalz

Posted November 17, 2011 - 11:23 AM


Well I just received my new 3.2 IMS tank and Raptor fuel petcock.
After reading many old threads I see there is a possibility of leaking fuel where the petcock bolts to tank.
The Raptor petcock has a small gasket built into it.
The IMS tank came with a larger gasket.
Is it best to use both gaskets?
What have any of you used to prvent leaks?
Thanks in advance,

  • Craigo

Posted November 17, 2011 - 12:26 PM


One gasket should be sufficient...

  • captbalz

Posted November 17, 2011 - 01:30 PM


So just the smaller one that is somewhat built in to the the petcock?

  • Noble

Posted November 17, 2011 - 01:40 PM


Without a picture it is hard to say. What is common is a petcock has a "O" ring style seal to seat against a surface on the original gas tank. What is also common is aftermarket plastic gas tanks don't have a good surface for the original petcock to seat against. So the gas tank comes with a big rubber gasket. Normally it is necessary to use the gasket that comes with the gas tank.

  • captbalz

Posted November 17, 2011 - 03:53 PM


Thanks for the reply's so far.
My main question is this:
For those of you who have used the 3.2 IMS with success (no leaking at petcock) what method did you use?
1. small gasket that comes on petcock only
2. large gasket that comes with tank over small gasket
3. the use of a gasket sealer or "seal all" type product with gaskets
Thanks again in advance

  • captbalz

Posted November 18, 2011 - 07:17 AM



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Posted November 18, 2011 - 07:58 AM


i'm using ims 2.6 gallon tank & E model petcock on both of my drz's.

i just used the oem petcock gasket(o-ring type) on both with no problems.

only thing i had to do was ream the holes in the tank so the petcock cleared.

should be real easy to test. you can install the petcock with tank off of bike & inspect for leaks.

  • captbalz

Posted November 18, 2011 - 08:14 AM


Sounds good. I think the threads I was reading with these tanks and leaking gaskets were older. Maybe the products have improved. Anyway, Thanks Roundeye.

  • Noble

Posted November 18, 2011 - 09:56 AM


Not every tank is the same. You have to evaluate for yourself what will work. Also watch for plastic shards in the tank. It may need a good cleaning before use.

  • captbalz

Posted November 18, 2011 - 10:48 AM


Thanks again Noble.

  • speedtoad

Posted November 18, 2011 - 05:58 PM


I had a problem with the bronze threads where the petcock screw go in. The threads stuck out a bit and made the surface not level. I used a belt sander to make the mating surface flat. It was a little scary to but was easy and worked great.

  • Craigo

Posted November 19, 2011 - 01:43 AM


I have 3.2 gal IMS on an SM and a E....I used the stock E petcock for both ..Perfect fitment...:busted:

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