Found the noise in my engine

M

Mike

hmmm....
Feb 17, 2007
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San Angelo, TX
sweetdiesel said:
This is why it would be nice to know what the valve relif is and what piston protusion is?And what gaskets are being used?


It could be as simple as thicker gaskets.JMO
Click to expand...


Problems may arise with wrist pin bushings, piston integrity and so on. I don't know Simon, do you think a gasket will fix it? What is the thickest gasket available?

With the clearance issue and all the other past thread mentions, the confidence level is not there. It will take someone going through the engine top to bottom and then....
 
Turbo Buick 6

Turbo Buick 6

...
Jun 28, 2007
3,259
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NE Pa
Mike said:
The planned compression ratio and all the work surrounding even this minor detail was in vein...... The 14.5 to 1 may vary well been 15.5 and so....
Click to expand...

Sounds like they were shooting for 25:1 with them sticking up that much......hope everything gets sorted out:eek:
 
ripmf666

ripmf666

Active member
Sep 20, 2006
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Wentzville Mo
So at first it was the injectors that were bad and now the builder I think was Curtis did not give enough clearance.Were these aries pistons?
 
sweetdiesel

sweetdiesel

That's better
Aug 6, 2006
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Thailand
Mike said:
Problems may arise with wrist pin bushings, piston integrity and so on. I don't know Simon, do you think a gasket will fix it? What is the thickest gasket available?

With the clearance issue and all the other past thread mentions, the confidence level is not there. It will take someone going through the engine top to bottom and then....
Click to expand...


I think but could be wrong that most people use a stock wristpin?
I dont know to be honest i just know that is what i used.

I learned the hard way to check the protusion of the pistons when doing a build,Some guys think that is a "No Brainer" I on the other hand ASSUMED it was good.And i was lucky to not do more damage. im sure if i would of reved any higher than I did my pictures would of been the same as Micks
<HR style="COLOR: #d1d1e1; BACKGROUND-COLOR: #d1d1e1" SIZE=1> <!-- / icon and title --><!-- message -->
Gasket Grade..................Compressed Gasket Thickness
A............................0.0354-0.0394
B............................0.0374-0.0413
C............................0.0394-0.0433
2 other gaskets listed in service manual
Block Over-Bored 0.010-0.030 in ...............0.0394-0.0433
Block Over-Bored 0.010-0.030 in and Deck Milled 0.008 in....0.0492-0.0532


What kind of Pistons are they?
 
McRat

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
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Norco CA
www.mcratracing.com
Sorry to hear that Mick.:(

I always have my pistons cut down .010" just in case.

It's one thing destroying parts by pushing them to the limits, but it's another when you get a sloppy build that ambushes you.

I'm in the same boat with the whole "frustrated at diesels" thing. I hurt an engine in our Vette, and in 7 days I had a new forged short-block in it for less than the cost of a set of pistons for a Dmax. Obviously I haven't had similiar luck with Dmaxes. In order to race these trucks successfully, you need to have 2 engines.

Did you get a value for the deck-height?
 
M

Mike

hmmm....
Feb 17, 2007
2,184
0
36
San Angelo, TX
ripmf666 said:
So at first it was the injectors that were bad and now the builder I think was Curtis did not give enough clearance.Were these aries pistons?
Click to expand...

That's right, the injectors are bad, to a point. As stated in an earlier thread. Yes, Curtis did the build.







sweetdiesel said:
I think but could be wrong that most people use a stock wristpin?
I dont know to be honest i just know that is what i used.

I learned the hard way to check the protusion of the pistons when doing a build,Some guys think that is a "No Brainer" I on the other hand ASSUMED it was good.And i was lucky to not do more damage. im sure if i would of reved any higher than I did my pictures would of been the same as Micks
<hr style="color: rgb(209, 209, 225); background-color: rgb(209, 209, 225);" size="1"> <!-- / icon and title --><!-- message -->
Gasket Grade..................Compressed Gasket Thickness
A............................0.0354-0.0394
B............................0.0374-0.0413
C............................0.0394-0.0433
2 other gaskets listed in service manual
Block Over-Bored 0.010-0.030 in ...............0.0394-0.0433
Block Over-Bored 0.010-0.030 in and Deck Milled 0.008 in....0.0492-0.0532


What kind of Pistons are they?
Click to expand...

Mahle pistons but I'm sure they would have been fitted. Milling the pistons will be the only option with the gaskets available. These were gas lock gaskets of sorts, I think?
 
Last edited:
ripmf666

ripmf666

Active member
Sep 20, 2006
15,123
14
38
47
Wentzville Mo
Mike said:
That's right, the injectors are bad, to a point. As stated in an earlier thread. Yes, Curtis did the build.











Mahle pistons but I'm sure they would have been fitted. Milling the pistons will be the only option with the gaskets available. These were gas lock gaskets of sorts, I think?
Click to expand...


Man you guys can not catch a break hope everything turns for the better.:hug:
 
M

Mike

hmmm....
Feb 17, 2007
2,184
0
36
San Angelo, TX
Here is the only groove, just what the gasket has pressed into the head. No groove in the block. Also notice the area where the piston has hammered the head. Head material is being beat off and planted around the area. The area that has been hammered into head is 10 to 15 thousandths deep. Notice pattern in head matches piston. More to come.
 

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Turbo Buick 6

Turbo Buick 6

...
Jun 28, 2007
3,259
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0
NE Pa
Mike said:
Here is the only groove, just what the gasket has pressed into the head. No groove in the block. Also notice the area where the piston has hammered the head. Head material is being beat off and planted around the area. The area that has been hammered into head is 10 to 15 thousandths deep. Notice pattern in head matches piston. More to come.
Click to expand...

Were those ported heads?
 
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