Need help looking at these hemi head gaskets
#471824
09/18/09 03:15 PM
09/18/09 03:15 PM
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I got the heads off and I see some things that don't look right. Is it normal for the gasket to block off the two water jacket passages (circled in red)? I had a local expert build the engine and this is the first time I've seen this. And what kind of gasket is this? The only marking is 001 in the middle of the gasket. What's a good composite gasket to put back on? I've got aluminum heads with 10.25:1 comp. The engine has about 200 miles on it. Can you tell from looking at the deck if the gasket was leaking? I had an oil leak that seemed to be coming from under the headers but could never trace it to it's origin. Thanks for the help
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Re: Need help looking at these hemi head gaskets
[Re: DLP4]
#471827
09/18/09 09:32 PM
09/18/09 09:32 PM
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CrAzYMoPaRGuY
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Bottom holes blocked, not unusual. The size of your coolant transfer slots up top? UNUSUAL! What kind of gaskets are those? The transfer slots are as big as any I have ever seen!
CrAzYMoPaRGuY
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Post deleted by Defbob
[Re: 383duster]
#471828
09/18/09 09:42 PM
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Re: Need help looking at these hemi head gaskets
[Re: DLP4]
#471830
09/18/09 10:27 PM
09/18/09 10:27 PM
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i hate to say it, but that engine looks more like it traveled more than 40,000 miles. is there a reason your "expert" hemi engine builder won't fix that? oh, i almost forgot, can you post a picture of the top of the valve cover please...
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Post deleted by Defbob
[Re: prochargedhemi]
#471831
09/18/09 11:00 PM
09/18/09 11:00 PM
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Re: Need help looking at these hemi head gaskets
#471832
09/19/09 12:48 AM
09/19/09 12:48 AM
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Thanks guys Is the Fel Pro 1106 a good choice for a head gasket? Is it possible to tell from looking at the deck or old gasket if there was an oil leak from the heads? Quote:
I don't believe there should be holes there for coolant.
I was wondering because there is a passage for coolant to pass thru on the head and on the block in those locations. The gasket is blocking the passage
Quote:
Bottom holes blocked, not unusual. The size of your coolant transfer slots up top? UNUSUAL! What kind of gaskets are those? The transfer slots are as big as any I have ever seen!
I checked email from the builder and they are Fel Pro 1106. I went to Jegg's website and they show a picture of my gasket for that part number
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wanna bet it's sucking oil thru poor intake fitting gaskets. you should be able to see that in the port
Intake ports look clean. no oil
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ioh, i almost forgot, can you post a picture of the top of the valve cover please...
Last edited by DLP4; 09/19/09 01:11 AM.
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Post deleted by Defbob
[Re: DLP4]
#471836
09/19/09 11:44 AM
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Re: Need help looking at these hemi head gaskets
[Re: JohnRR]
#471838
09/19/09 12:40 PM
09/19/09 12:40 PM
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Quote:
Quote:
Bottom holes blocked, not unusual. The size of your coolant transfer slots up top? UNUSUAL! What kind of gaskets are those? The transfer slots are as big as any I have ever seen!
those holes are blocked on all big block gaskets , it's normal , the transfer slots are as big as the ORIGINAL steel shim gaskets in my 383 , someone changed them I do not know when to the narrow slot , maybe that happene when the wedge blocks went form single hole to the figure 8 hole ?
I heard, though I don't present it as actual FACT, that the transfer slots got really small to try to keep the temperatures up for emissions purposes, the idea was to get the engine to run hotter. True? I have no idea. I just put FelPro head gaskets in my Jensen's 440, they had the small slots, and I opened the slots up myself. I have never modified a head gasket in my life, but decided I wanted to try it.
CrAzYMoPaRGuY
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Re: Need help looking at these hemi head gaskets
[Re: CrAzYMoPaRGuY]
#471839
09/19/09 12:59 PM
09/19/09 12:59 PM
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Here is a look at the Cometics, for comparison. Sorry it doesn't show the whole gasket. Mark
1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Need help looking at these hemi head gaskets
#471840
09/20/09 09:07 PM
09/20/09 09:07 PM
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Quote:
THAT'S WHY THEY MAKE THESE
That looks like it would solve the problem. Do I need to machine the head to install these?
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Re: Need help looking at these hemi head gaskets
[Re: DLP4]
#471841
09/20/09 09:14 PM
09/20/09 09:14 PM
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No, but they are a tight fit.
Mark
1996 Ram 1500 Sport 1968 road runner 1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Need help looking at these hemi head gaskets
[Re: DLP4]
#471842
09/20/09 09:22 PM
09/20/09 09:22 PM
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Quote:
Quote:
THAT'S WHY THEY MAKE THESE
That looks like it would solve the problem. Do I need to machine the head to install these?
Nope. Put them in the freezer for a few hours and hammer them in. I still get a little oil when I pull the plugs but not nearly as much as without them. It depends to the how tight the tubes fit (tube diameter/O ring size, etc.)
Those gaskets look like the one MP uses on their older crate motors. During the the later days of Cummins (crate motor assemblers) they would spray them with a Hi Tack or some other type sealer (red) because they had a notorious propensity to leak coolant out all four corners as well as from the oil return passages.
Cometics work great to prevent these problems, but they need a particular finish on the block and heads. If your going to take it apart again, it may be worth your while to re surface the block and heads for the cometic. I used them and sprayed them with Hylomar blue and I have absolutely no leaks.
Is this a crate motor? Some of the other areas that the old crate motors were bad for were loose guides, and piston to cylinder clearance being all over the map (both cases cause excessive oil consumption)as well as the decks not being cut straight. Something to check.
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