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Old 09-18-2008, 01:49 PM   #1
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Default Oil Pump Gasket - Dumb question

Easy question for the day.... Not for me apparently. Is there a gasket between the oil pump and block? Can't find anything in the manual that says anything about a gasket or RTV.

thanks in advance.
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Old 09-18-2008, 04:07 PM   #2
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yes
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Old 09-18-2008, 04:16 PM   #3
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the service manual shows the need to remove and replace the gasket
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Old 09-18-2008, 05:12 PM   #4
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Quote:
Originally Posted by Braineack View Post
the service manual shows the need to remove and replace the gasket
My 1994 Mazda service manual shows no gasket. I talked to Mazda motorsports and they said no gasket on the '94. RTV, o-ring, but no gasket. FM says the same thing. No gasket on the mazda parts breakdown. weird.
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Old 09-18-2008, 05:47 PM   #5
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well then. you has fsm in psd?
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Old 09-18-2008, 06:10 PM   #6
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Quote:
Originally Posted by Braineack View Post
well then. you has fsm in psd?
huh? Speak frickin english man!

I'm pretty sure when I took that thing off there was a gasket....
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Old 09-19-2008, 08:29 AM   #7
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FSM = Factory Service Manual
PDF = Portable Document Format (Adobe owns this)
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Old 09-19-2008, 09:15 AM   #8
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Quote:
Originally Posted by quadmasta View Post
FSM = Factory Service Manual
PDF = Portable Document Format (Adobe owns this)
Gotcha. I got the FSM part but got thrown off by the PSD. Anyway, upon looking closely at the oil pump there really is no need for the gasket and in fact if the gasket was too thick it could reduce the effectiveness of the o-ring. I'll do a very thin coat of RTV and be done with it.

thanks!
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Old 09-19-2008, 09:40 AM   #9
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I recommend using some Indian Head gasket shellac.
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Old 09-19-2008, 10:04 AM   #10
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make sure you use the oil resistant RTV, as there are many different kinds. The oil resistant is black i believe.
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Old 11-29-2008, 11:09 PM   #11
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Sorry to dredge up an old thread, but I was reading in my '95 FSM about replacing this gasket. When I took the motor apart, I cannot for the life of me remember taking one off, nor can I find one in the labeled bags of everything I took off. But here's the picture of the FSM page:

Name:  OilPanGasket.jpg
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Anyway, get a gasket, leave it off, or use some RTV?
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Old 11-30-2008, 11:54 PM   #12
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There isn't a gasket for the oil pump to block. I used RTV on mine when I rebuilt my motor 2 years ago without a problem. Recently I picked up a tube of Toyota Gasket Maker and it seems to be a better option than RTV b/c it stays more pliable.

The gasket pointed out in your picture is for the water pump.
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Old 12-01-2008, 12:25 AM   #13
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I always used Ultra Black on all my old built engines. No issues!
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Old 12-01-2008, 01:30 AM   #14
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Quote:
Originally Posted by Midtenn View Post
The gasket pointed out in your picture is for the water pump.
lol My mistake.
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Old 12-01-2008, 11:43 PM   #15
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lol My mistake.
No problem, I looked at it a few times to make sure myself.
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Old 06-03-2013, 01:55 PM   #16
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Hate to bring this back from the dead but I was searching for opinions on this and found this thread......That's right noobers, SEARCH!!!

Anyway, the pic shows two gaskets. I ordered part number B621-14-113 directly from Mazda and got the thin paper gasket that goes between the oil pump and block. Just wanting to make sure our archives have accurate information for the next person.
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Old 06-03-2013, 02:05 PM   #17
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1.6 is a gasket. 1.8 is RTV and an o-ring at the high-pressure port.
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Old 06-03-2013, 02:07 PM   #18
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hmmmmm, I ordered a gasket for 1.8 and they sent it, it fits?
I know the last couple engines (1.8s) I have only used Hondabond and have not had any trouble. When ordering the final seals needed for MY engine I asked about the OP gasket and they gave me that part number and it fits well. Now Sav has me second guessing myself. My gut tells me to go with the known entity and use the RTV.
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Old 06-03-2013, 02:44 PM   #19
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Quote:
Originally Posted by Savington View Post
1.6 is a gasket. 1.8 is RTV and an o-ring at the high-pressure port.
In general, this is the right answer. However, I've "heard" that some of the early 1.8s used a gasket.

Safest approach is to look at the back of your oil pump. Inspect the surface that meets the engine block.

If it looks like this, you need a gasket (ignore the circles please):


If it looks like this, you need an O-ring and oil-resistant RTV:


General rule, surfaces that take gaskets are always flat. Surfaces that take RTV will have a machined groove. And, obviously, an O-ring needs a machined groove as well.
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Old 06-03-2013, 03:00 PM   #20
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GREAT POST Hornet!!!!!
Mine was milled for the o-ring as well as the sealing flange for the RTV and that is why I was researching it myself. I will use the Hondabond with confidence.
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