3.944 J
ALERT!! SOUND THE ALARM!!..
- Thread starter j par
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yellow rose
Overnight Sensation
Be right back. LOL
j par
Well-hung Member
Damn it I just had figured it out and you treed me...
I thought it would never happen...
...
j par
Well-hung Member
Yay! I'm golden...
I quoted 318 but he's probably making a video of himself LOL...
j par
Well-hung Member
Looks like I got the information but I had to pay for it LOL...TMI (too much information)
And what ever you do don't say "golden" around Halifaxhops. Just sayin' LOL
Bobzilla
Well-Known Member
Thanks for the clarification. That makes sense, especially for a street engine that won't be pushed to it's limits.
On my 4.38" bore, I chickened out because the gasket was just barely sticking out over the very tiny chamfer that was put on the top of the cylinder bore after machining. I was afraid of torching the gasket there, and the more I tried reading about it, the more it looked like around .030" gasket oversize was preferred, so I just went ahead and bought the bigger ones. Live and learn, I guess.
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j par
Well-hung Member
I was brushing my good tooth getting ready to go to work and my voice cracked! Dammit.. now I sound like a frog...
No doubt. Where's my Zyrtec !
j par
Well-hung Member
My cometic's will be here Wednesday...
...
...
j par
Well-hung Member
My cometic's will be here Wednesday...
My cometic's will be here Wednesday...
I noticed you ordered the standard versions, not the ones designed for the EQ/Eddy heads. Any reason why? I haven't had a chance to call Cometic yet, but I've been assuming that being a edelbrock clone the SMs would have the same changes to the cooling passages.
j par
Well-hung Member
I wasn't aware of any changes in cooling passages??..
yellow rose
Overnight Sensation
That’s only .040 bigger than the bore so your still golden. That’s a pretty small crevice volume.
I can tell you the difference between the 4.050 bore and 4.080 bore, but I’m going to do them both at .070 thick to be fair and half way accurate and not make it to confusing to myself.
BRB
5622-xx are standard gaskets, they fit iron heads (and others I'm sure). The 5917-xx gaskets are listed by Cometic as "Designed to fits engines with 318A Engine Quest or Edelbrock aftermarket cylinder heads."
Best I can find, that change is slight differences in cooling passage locations. I've been meaning to call Cometic and confirm that info, or get the correct info at least. But there's some reason why they make and list a different one for those two heads, and it's not just for fun.
With the SMs being a direct edelbrock copy, I've been assuming they those differences. If not, that would be great, Summit has the gaskets I would use in that case, in stock....for now.
yellow rose
Overnight Sensation
Edit: my math says the crevice volume difference between what you had and what you are getting is .0008108 cc’s. That’s not very much.
But what if you went to a say...4.180 bore gasket??? How much more crevice volume would you have???
BRB
j par
Well-hung Member
GREAT..
...
yellow rose
Overnight Sensation
Edit: more math says if you went to a 4.180 bore gasket over the 4.050 gasket you have a crevice volume gain of .0144144.
If you can’t tell...I’m BORED.
j par
Well-hung Member
Well all this might be moat if you take into consideration what turbomlh is saying...
yellow rose
Overnight Sensation
I saw what he said and frankly, I didn’t see that when I ordered mine, so I’m sweating bullets that I ordered something I can’t use.
Plus, I didn’t want to rain on your success.
yellow rose
Overnight Sensation
Ok, had to dig through my emails to see what exactly I ordered.
I bought C5456-.036 and I’m hoping that’s what I should have ordered.
I bought C5456-.036 and I’m hoping that’s what I should have ordered.
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