HG 3283339 Question

[MrHorsepower]

So, I'm all ready to order a new head gasket, when I did some more research and came across a post from 3 years ago on a different forum. The post claims that the .020" thicker gasket will throw off the spray angle into the piston causing more haze and piston/cylinder failure etc.....
Anyone come across this or have evidence of this? Will this be bad for my ride with 6x.016's or so?
Am I overthinking this?
Thanks,
Bob

[gear jammer 91"]

I've ran both a stock gasket and a .020 over gasket. In my experience I did not notice more of a haze at idle with the thicker gasket, I only ran it for about 4 or 5 months this last winter. I now have a stock thickness gasket back in and I haven't noticed less idle haze, but I haven't really been paying attention. I'll watch for idle haze tomorrow and see if I notice a difference. As for the piston issue's I didn't run the gasket long enough to notice. The .020 gasket's failure was my fault, not the gaskets.

[ford69557ci]

I ran the .020 with 6x18s and larger and notice no difference in idle haze compared to the stock thickness.

[cell]

Whats the advantage of the .020 vs stock hg?

[dpuckett]

The thicker gasket will lower your compression ratio (according to Joe Donnelley) from 17.5:1 to about 16.5:1. This allows higher horsepower, the theory being that less cylinder pressure will let the engine last longer (as if that's a real issue). You will need to advance your timing to make up the difference in heat generated during the power stroke. In my experience, I'd stick with a stock or maybe .010" over gasket for low HP (<400) applications. I never put a stock gasket back in my 92 D350, but I think it was a contributing factor to the slightly lower fuel economy I had with it vs others.

Daniel

[gear jammer 91"]

my truck does seem to haze less, but I think its due to the warmer temperature outside.

[MrHorsepower]

Thanks Gear Jammer,
Have you noticed anything other differences between the two head gaskets?

Is there a difference between longevity and the thicknes in the head gaskets?

[fasttalker83]

Dan I have to disagree with who ever thought up that theroy and cylinder presure...example a puller doesnt run lower compression for cylinder pressure...they run a lower compression pistons HG thicker and so on is to pack as much air into the cylinder in one stroke to make more power-air is power- the more air compressed in the cylinder during the stroke ignited by diesel fuel will make more pushing force down on the piston during the power stroke, I have 15:1 pistons in my 90 puller which is a little lower than the 370 marine engine, but I have built pumps for tractor pullers that run as low as 13:1 compression ratios and have to start off of ether cuz of the low copression-take in example if you put a 900cc fuel pump onto a motor with 17:1 compression ratio how much fuel would you really use for power over just creating heat

[gear jammer 91"]

i really haven't noticed a difference in the two gaskets. As far as how long they last, I have no idea, I was the cause of the destruction of both a stock thickness and a .020 over thickness gasket. I have since learned the error of my ways . I don't know if one will outlast the other when treated properly.

[dpuckett]

Fasttalker- you did a better job explaining it than I did. We were on the same page, just not reading the same paragraph, I guess.

13:1? That's getting into gasser territory, isnt it?

DP

[soggy]

I think it was the Franken Cummins, the one with the john deere injectors, anyways there was a guy in Diesel Power running 11:1 comp ratio