318 build

[Bewy]

Here is a great example of why the Wallace DCR is useless. The example comes right from Mother Mopar!
Take the 426 Wedge [ not max wedge ] & the 426 Hemi. Same bore, stroke etc...
The specs to calculate the DCR are too all intents the same, identical except for rod length. The hemi rod is about 0.100" longer which will make a miniscule difference to the final number.
The hemi has a much better flowing intake port, bigger valves & would pack more air into the cyl. Yet that is not factored into the DCR calc. And the surface to volume ratio of two very different combustion chamber designs, with diffetrent burn characteristics & timing requirements, are not factored in either.

 

[Newbomb Turk]

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Here is a great example of why the Wallace DCR is useless. The example comes right from Mother Mopar!
Take the 426 Wedge [ not max wedge ] & the 426 Hemi. Same bore, stroke etc...
The specs to calculate the DCR are too all intents the same, identical except for rod length. The hemi rod is about 0.100" longer which will make a miniscule difference to the final number.
The hemi has a much better flowing intake port, bigger valves & would pack more air into the cyl. Yet that is not factored into the DCR calc. And the surface to volume ratio of two very different combustion chamber designs, with diffetrent burn characteristics & timing requirements, are not factored in either.

Perfect example of why calling it DYNAMIC compression ratio is bad policy.

It’s confusing and at best misleading.

That’s why I always use EFFECTIVE compression ratio. I learned that as a kid learning two stroke function. They always use ECR.

Let’s fix this and bury DCR.

 

[Newbomb Turk]

Here is a great example of why the Wallace DCR is useless. The example comes right from Mother Mopar!
Take the 426 Wedge [ not max wedge ] & the 426 Hemi. Same bore, stroke etc...
The specs to calculate the DCR are too all intents the same, identical except for rod length. The hemi rod is about 0.100" longer which will make a miniscule difference to the final number.
The hemi has a much better flowing intake port, bigger valves & would pack more air into the cyl. Yet that is not factored into the DCR calc. And the surface to volume ratio of two very different combustion chamber designs, with diffetrent burn characteristics & timing requirements, are not factored in either.

 

[junkyard kid]

Seems like howards should get the credit instead of hughes cause everyone hold hughes so highly regarded for there whiplash cams

Well, all I can say is this
With an Ica of 60*, the cylinder pressure in OP's 318, according to the Wallace, could vary from
142 @ 8.6 to
164 @ 9.6
186 @ 10.6
209 @ 11.6

I've been to 195CCP at least, with a Hughes HE2430AL, and I can tell you that it was insanely much fun. But too much for a Manual Trans to drive slow with.
If I was stuck with a 318, I'd go for pressure.
and since I'm not gonna commit to running best gas, read expensive, ALL the time, why would I run iron heads at 9.6/1.
No, I'm gonna target 200psi with alloy and run 87E10, for which I can buy gas anywhere/anytime.
And BTW
Show me a 318 with a 2336Whiplash cam, in at 102, that can make 340 ftlbs at 3500, with 8.6/1 Scr, which is the recommended maximum compression ratio for that cam.
And, Tell me about VE at 3500 @ 8.6Scr... with , .506lift Whiplash-cam, and stock bigport heads no less.
340 ftlbs? Yeah right.
And even if it did, 340 ftlbs sux period, cuz ;
1) that is the same as a stock 1969 318 2bbl was rated at. and
2) And for the amount of money OP is spending.... it really really sux.


But, what do I know;
I'm just a guy that drives 90 minutes to the track, runs a 106 with a 223cam, and drives it back home, at 32mpg, geared for 65=1600; she was my DD. And, with the next bigger cam, she ripped off a 93 in the Eighth.
So you know, Willrun gets the glory, and I get the chitstains. I should be used to it by now.

Op
good luck, I stand by what I said.

 

[junkyard kid]

Seems like howards should get the credit instead of hughes cause everyone hold hughes so highly regarded for there whiplash cams

 

[junkyard kid]

Now I know why I joined somebody said what do I know ? Everything the personal experience from everyone is unreal see yall go back and forth trying to hash out the right answer man that's some great information I do agree and the destroying the 302 Is kinda ignorant who vlcares about the flow at such a lo lift I want to be able to gasket match my intake to the head and the j heads will match the 302 heads want only videos I watch is David vizard cause uncle toys garage give him a build to do and Charles sevidio kinda took over the heads as far as porting I just got to f8nd me a good machine shop I'm a machines by trade or was worked at Duracell in the 10th grade first 10th grader in 40 years git to work at Duracell so I can run the machines I got a good heart and the prices are not relevant in my opinion if one machines would charge a good price on work he'd take everyone's buisness

 

[RustyRatRod]

Seems like howards should get the credit instead of hughes cause everyone hold hughes so highly regarded for there whiplash cams

Actually, no. Crower probably gets credit and over fifty years ago. They were the first to mass produce "Whiplash" and "Thumpr" type cams. I forget which line it was, but they had a line of cams that had big duration splits and narrow lobe separations. So technically, Crower gets the prize. People act like all this mess is something new. Trust me. It's not.

 

[junkyardhero]

Actually, no. Crower probably gets credit and over fifty years ago. They were the first to mass produce "Whiplash" and "Thumpr" type cams. I forget which line it was, but they had a line of cams that had big duration splits and narrow lobe separations. So technically, Crower gets the prize. People act like all this mess is something new. Trust me. It's not.

crower had all kinds of wild names in the late 60's thru the 70's: baron, imperial, hauler, rev plus

i ran a baja torque master from the 70's in a 360 and a beast series from the 90's in a 455 buick

anyway, it don't matter none. everything is a 3/4 cam if it ain't stock or full race.

 

[RustyRatRod]

crower had all kinds of wild names in the late 60's thru the 70's: baron, imperial, hauler, rev plus

i ran a baja torque master from the 70's in a 360 and a beast series from the 90's in a 455 buick

anyway, it don't matter none. everything is a 3/4 cam if it ain't stock or full race.

I THINK that it was some of the early Hydraulic Haulers. AbodyBomber (RIP) and I discussed it routinely.

 

[Newbomb Turk]

I THINK that it was some of the early Hydraulic Haulers. AbodyBomber (RIP) and I discussed it routinely.

Yup...hydraulic haulers was a big seller for them. They had Compupro lobes too.

 

[junkyardhero]

I THINK that it was some of the early Hydraulic Haulers. AbodyBomber (RIP) and I discussed it routinely.

you might'n be right.

if i recall correctly they had a line called hi-draulic hauler which was different than their "hauler", but i don't have my cat-e-log here in front of me and i've slept since then.

 

[RustyRatRod]

you might'n be right.

if i recall correctly they had a line called hi-draulic hauler which was different than their "hauler", but i don't have my cat-e-log here in front of me and i've slept since then.

Yeah and the Beast and Ultra Beast. They still make some of them.

 

[StreetSleeper]

View attachment 1716380033View attachment 1716380034View attachment 1716380036
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How do you setup the linkages on that sideways carb setup?

 

[junkyard kid]

Was wondering about these pictures think two cylenders was leaking on one side of the engine I used a straight edge and filler gauge and the heads was fine but there's a low spot in the middle if two cylenders on one side and wanted to ask with this cam I got will it jerk me around loping like my dad's old 72 challenger r/,t 440 crane cam tunnel ram two fours Jardine headers rockcrusher 4 speed it was hstd on your neck in 4th gear from the com loping but here's the cam card so u know what it is exactly

 

[Newbomb Turk]

Was wondering about these pictures think two cylenders was leaking on one side of the engine I used a straight edge and filler gauge and the heads was fine but there's a low spot in the middle if two cylenders on one side and wanted to ask with this cam I got will it jerk me around loping like my dad's old 72 challenger r/,t 440 crane cam tunnel ram two fours Jardine headers rockcrusher 4 speed it was hstd on your neck in 4th gear from the com loping but here's the cam card so u know what it is exactly

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IMO the block needs to be decked. You can see the block is comprised between the center cylinders.

If you don’t deck it and the gasket fails you’ll be taking it apart again and getting it decked.

I call that stepping over a donut to pick up a dog turd.

Surface the block.

 

[junkyardhero]

i'd say that's gonna need some machine work, especially with the cracked piston. how's that bore look?

 

[Newbomb Turk]

i'd say that's gonna need some machine work, especially with the cracked piston. how's that bore look?

Yup. It’s not a krylon rebuild for sure.

 

[junkyard kid]

And the 302 heads about deshroud8ng the valve I'm not just gonna angle the quench pad just a hair around the top of the valve area I'm not trying to shroud the valve but just tapering the edges of the quench pad kina like a relief was told it would make a big difference cause it would allow the quench to flow alot better with the relief any comments would be great jus6 trying to get thr most out of thr heads without taking alot off the cc of thr heads really don't need poer sy let thr

i'd say that's gonna need some machine work, especially with the cracked piston. how's that bore look?

 

[junkyard kid]

Which one I can get better pictures for yall if need be I just thought since ut was low in between the two pistons thst might be the reason it bl9wed the head gasket

 

[junkyard kid]

It has some straight up and down grooves but not from the piston I don't think

 

[junkyard kid]

The filler gauge showed it to be low in between the two cylenders but u can see the lines in the one Pic and man I'm getting bummed out don't look like a piston scratch u can feel it with thumb nail been praying alot about help from the man up stairs this is my third moter I've bought its the last chance I got until next week if it's messed up found a 340 pretty reasonable if this is junk really don't have to confidence to spend over a thousand bucks on a moter had 56 mopar moters in the garage at the junkyard when my dad passed there all gone brother took the last moter it was a 68 charger 318 30.000 miles on it and my brother just sold my 360 magnum moter I paid good money for man I just want to hear my papaws old 76 power wagon wrecker run he sold it 26 y ears ago and I hunted fir it all them years and found it so it's not just a build to me so I appreciate any help u give even if it's bad news was fixing to go get a 727 transmission cheap but I'm already out 2300 for 3 moters if this one's not good idk what to do can't see doing it again wife said when am I gonna stop buying junk I thought it was just the low spot but do yall see any cracks in the cylender or pistons by chance

 

[toolmanmike]

The filler gauge showed it to be low in between the two cylenders but u can see the lines in the one Pic and man I'm getting bummed out don't look like a piston scratch u can feel it with thumb nail been praying alot about help from the man up stairs this is my third moter I've bought its the last chance I got until next week if it's messed up found a 340 pretty reasonable if this is junk really don't have to confidence to spend over a thousand bucks on a moter had 56 mopar moters in the garage at the junkyard when my dad passed there all gone brother took the last moter it was a 68 charger 318 30.000 miles on it and my brother just sold my 360 magnum moter I paid good money for man I just want to hear my papaws old 76 power wagon wrecker run he sold it 26 y ears ago and I hunted fir it all them years and found it so it's not just a build to me so I appreciate any help u give even if it's bad news was fixing to go get a 727 transmission cheap but I'm already out 2300 for 3 moters if this one's not good idk what to do can't see doing it again wife said when am I gonna stop buying junk I thought it was just the low spot but do yall see any cracks in the cylender or pistons by chance

I didn't see how bad the low spot was between the cylinders. Did you clean the surfaces before you measured? What was that measurement?

 

[junkyardhero]

is this debris or a broken piston?

anyway, i don't know what your question is, what your plan is or what you're trying to achieve because i can't parse the information you are presenting and communication with you is difficult because nothing is clear and you're laying it on all scatter shot.

i can tell you with a reasonable level of confidence that you're going to need machine work on that block and those heads, they look awful. but beyond that, i'm sorry but i don't think i can offer much assistance because i can't tell what you're actually trying to do here.

 

[junkyard kid]

The filler gauge showed it to be low in between the two cylenders but u can see the lines in the one Pic and man I'm getting bummed out don't look like a piston scratch u can feel it with thumb nail been praying alot about help from the man up stairs this is my third moter I've bought its the last chance I got until next week if it's messed up found a 340 pretty reasonable if this is junk really don't have to confidence to spend over a thousand bucks on a moter had 56 mopar moters in the garage at the junkyard when my dad passed there all gone brother took the last moter it was a 68 charger 318 30.000 miles on it and my brother just sold my 360 magnum moter I paid good money for man I just want to hear my papaws old 76 power wagon wrecker run he sold it 26 y ears ago and I hunted fir it all them years and found it so it's not just a build to me so I appreciate any help u give even if it's bad news was fixing to go get a 727 transmission cheap but I'm already out 2300 for 3 moters if this one's not good idk what to do can't see doing it again wife said when am I gonna stop buying junk I thought it was just the low spot but do yall see any cracks in the cylender or pistons by chance

Well how good are the 318 marine moters says 250hp on the valve cover red in color if the blocks messed up or piston just gonna get the marine 318 moter any comments on the quality of a marine moter and the fact it's a reverse ror

I didn't see how bad the low spot was between the cylinders. Did you clean the surfaces before you measured? What was that measurement?

Yesterday morning I checked it was low compared to the rest of the block used a thin filler gauge and it slid under in between the cylinders but there's some scratching in that cylender yall are talking about the rest are fine I've seen pistons scar a cylender before it don't look the same to me it's a very small scar like straight up n down in the cylender u can catch your thumb nail on it easy bit it look like a small scratch think its a crack but quick question anyone know if the 318 marine moters are any good says 250 hp on it red in color but it turns backwards any info on that type of moter would be appreciated guess I'm gonna sell my 2001 quad cab dakota and get the marine moter regret not just building one of my r/t dakotas but the cam cost scared ne off people saying 1400 to 1600 bucks I gog 1500 bucks worth of parts to put in a good block

 

[junkyard kid]

is this debris or a broken piston? View attachment 1716381625

anyway, i don't know what your question is, what your plan is or what you're trying to achieve because i can't parse the information you are presenting and communication with you is difficult because nothing is clear and you're laying it on all scatter shot.

i can tell you with a reasonable level of confidence that you're going to need machine work on that block and those heads, they look awful. but beyond that, i'm sorry but i don't think i can offer much assistance because i can't tell what you're actually trying to do here.

Trying to get info on the block etc appligize I goy ptsd real bad I hit the gairdrail on a 05 cbr 600 rr running 125 mph