919 head gasket - Wrist Twisters
 
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post #1 of 14 Old 03-17-2013, 06:52 PM Thread Starter
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919 head gasket

I have been riding for a year now with blown gasket. Wondering if anyone else has had this problems, and if so where did you find deal on gasket?

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post #2 of 14 Old 03-17-2013, 09:24 PM
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the only bad 919 headgaskets i have EVER heard of are those dudes running turbo'd 919's at like 9+ psi.

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post #3 of 14 Old 03-17-2013, 09:25 PM
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Riding for a year with a blown head gasket.
Hmmmmm, so how do you know it's blown, and why are you still running it that way a year later ?

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post #4 of 14 Old 03-17-2013, 10:12 PM
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I wonder if maybe u mean "valve cover gasket"

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post #5 of 14 Old 03-18-2013, 09:46 AM
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Quote:
Originally Posted by gpickles
I have been riding for a year now with blown gasket. Wondering if anyone else has had this problems, and if so where did you find deal on gasket?
Sounds like my old Civic. I would buy an OEM gasket if you are sure that's your issue. Even tho riding for a year overheating it. It probably needs a lot more than a gasket

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post #6 of 14 Old 03-18-2013, 10:00 AM
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+1 on valve gasket cover.
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post #7 of 14 Old 03-18-2013, 02:07 PM
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What are the symptoms for your blown head gasket?

There was a thread on going with a thinner head gasket to increase compression and gain something like 10-12HP. The stock head gasket is around 83mm, as RobT measured and for the performance oriented thinner gaskets, there are 73-75mm ones for around $100.
http://www.shopengineparts.com/parts...%29&type=model

From the read on those threads, there is no need to change cams.

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post #8 of 14 Old 03-18-2013, 02:50 PM
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But that's the bore size, correct? not the thickness, lol... an 83mm thick gasket would be the width of my, well, uh, it's BIG!!!

Wouldn't the thinner head gasket be on the order of 1-2mm less? if that?

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post #9 of 14 Old 03-18-2013, 02:57 PM
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that would be the bore.... not thickness... the bore would stay the same, the thickness would be magnitudes smaller in difference... we are talking taking 1 layer out of a 3 layer head gasket, which in itself is no more than 1mm thick.

That stated... COME BACK OP... head gasket or valve cover gasket!

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post #10 of 14 Old 03-18-2013, 03:16 PM
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PAIR gasket's are leaking.



holeshot sells them.
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post #11 of 14 Old 03-27-2013, 09:12 PM Thread Starter
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Tore it apart this week and cylinder 1 was leaking. There is a small defect in top of my cylinder, that over time caused a very small leak into cylinder. I was burning a gallon per season, could smell it in exhaust, and it was over pressuring my radiator causing excess to blow out of over flow bottle from pressure onto ground.

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post #12 of 14 Old 03-27-2013, 10:06 PM
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Quote:
Originally Posted by gpickles View Post
Tore it apart this week and cylinder 1 was leaking. There is a small defect in top of my cylinder, that over time caused a very small leak into cylinder. I was burning a gallon per season, could smell it in exhaust, and it was over pressuring my radiator causing excess to blow out of over flow bottle from pressure onto ground.
interesting.... first i have heard of a head gasket failure on a non boosted 919. how many miles? and had the head gasket been taken apart before?

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post #13 of 14 Old 04-02-2013, 08:29 PM Thread Starter
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I bought at 12000 last year,seller told me it had slight leak. It now has 17,500 on it, and should be fixed. Like I said very small pin hole looking defect in top of my #1 cylinder outside edge.

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post #14 of 14 Old 04-03-2013, 06:02 PM
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Sucks it took so long to have something done about it, the original owner could have easily had this done under warranty work.

Now it's your problem.
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