F4 750 head removed. - MVAgusta.net
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post #1 of 66 (permalink) Old 05-23-2016, 05:44 PM Thread Starter
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F4 750 head removed.

Hi, i am just contributing to the F4 750 forum.
I was suffering water/coolant in the exhaust for a number of months, and lately water was mixing with the oil.
So a week ago i started a leisurely bike/engine strip. After careful diagnosis by removing the exhaust manifolds, i discovered that water/coolant was escaping from the exhaust port on cylinder 3. So i removed the cylinder head to A/ check the head gasket and B/ skim and pressure test the head.
After reading some of the horror storys about camshaft bearing bridge and head nut removal, i was surprised at how easy it all came apart. Phew
The valves and seats were in great order and will be cleaned and re seated upon rebuild. Tomorrow i will lightly skim and clean up the head then over the next few days pressure test the head before repairing or renewing and then rebuilding again.
I posted my trying to locate a cylinder head gasket experience here...which was odd http://www.mvagusta.net/forum/showthread.php?t=180585
While the trellis was of i decided to change the color to red ( I noticed when i bought the bike 3 1/12 years back that under the black was a red frame...strange.)
Should be all back together and running by next weekend
As a side note, stripping the head i can see were ferrari had input designing aspects of the engine, it reminds me of when we rebuilt the F355 engine.
Thanks for reading. Brando

Last edited by Brando; 05-28-2016 at 06:12 AM.
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post #2 of 66 (permalink) Old 05-23-2016, 06:01 PM Thread Starter
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Just for a comparison, heres a few pictures of both the F4 & Ferrari heads.
Looking at the radial valves on both the F4 and the F355 one can see the similarities.
Both bike and car heads were designed during the same years between 95-2000. I wonder if it was the same department/ designers. Brando
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Last edited by Brando; 05-23-2016 at 06:04 PM.
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post #3 of 66 (permalink) Old 05-23-2016, 09:19 PM
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Hi Brando, how many miles on your 750? What was the motor running like before the gasket failure, any oil burn from valve stem seal wear?

What Generation of 750 is yours? Single rad, early twin rad or later? Hope the rebuild goes well and be doubly careful with the valve collets seating when you assemble, chck and double check.

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in the garage: 2001 F4 750 1+1, 2005 Brutale 910S Carbon, 2007 Brutale 910R, 2009 F41000R, 2013 Brutale 800, 2015 Turismo Veloce 800,1976 Triumph T140D Bonneville, 1976 Honda CB400F2.
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post #4 of 66 (permalink) Old 05-24-2016, 01:12 AM Thread Starter
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Hi, 15k miles and was running perfect, was even running great while it was leaking water into the exhaust. Although it was harder to start from cold. Burning no noticeble oil.
Its a gen 1 ( i did originaly post this in the gen 1 section), and has two rads. Yeah its noted about the collets, they are tiny arnt they Brando

Last edited by Brando; 05-24-2016 at 01:24 AM.
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post #5 of 66 (permalink) Old 05-24-2016, 02:53 AM
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Hi Brando, is that the correct red paint ? If so, do you have a thimble full left ? Because I need to touch up a scratch on my RC.
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post #6 of 66 (permalink) Old 05-24-2016, 03:42 AM Thread Starter
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Hi mate, the paint i chosen is the 2K 304 Rosso Corsa (Ferrari 308) color.
However i still have this that you can use mate, it was mixed last year and is the correct red for the F4.
If you want it shoot me an email with your address and i will post it to you, then you can just post it back. Brando
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post #7 of 66 (permalink) Old 05-24-2016, 04:04 AM
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Thanks Brando. I reckon your dad likes the RC !

Last edited by Willythepooh; 05-24-2016 at 01:22 PM.
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post #8 of 66 (permalink) Old 05-25-2016, 06:20 AM
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Thanks, very interesting.

2000 F4 750
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post #9 of 66 (permalink) Old 05-25-2016, 11:45 AM Thread Starter
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Quote:
Originally Posted by Willythepooh View Post
Thanks Brando. I reckon your dad likes the RC !
Hi will, indeed he does
He was telling me that you made him smile and that you both chatted for a while.
Not many people win him over Brando
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post #10 of 66 (permalink) Old 05-25-2016, 11:55 AM
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It's cool seeing the design similarities, thanks for taking the time to post that up Brando. I've always said the the F4 is like riding a Ferrari.

What we've got here, is failure to communicate.
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