j par
Well-hung Member
A little hundred shot would get you right there no problem and no getting into the motor at the push of a button.
High compression blues.
- Thread starter hosehead
- Start date
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hosehead
Well-Known Member
Something about an all steel car with full interior, full exhaust, street tires, all motor, DRIVEN to the track running mid elevens that gets me goin.....
And probably blow a head gasket. He is very close to detonation......he WAS detonating before. Nitrous adds a tremendous amount of cylinder pressure. Chances are, it would detonate big time with nitrous. Even a small amount.
j par
Well-hung Member
Isn't that why you retard the timing for nitrous?
Well sure, but from the sound of it, his timing would need retarding to the point that it would remove what power the nitrous added.
He's on the ragged edge now. He'll probably still detonate in the summer during heat soak.
Nitrous engines "should" be specifically built for nitrous. Wider LAS and generally lower compression than what he has.
j par
Well-hung Member
Now that he's got this timing issue fix he could be nowhere near detonation? He hasn't given back any feedback from that.
hosehead
Well-Known Member
Now that I've got the point of detonation figured out, it seems like the .557 cam would better utilize all that cylinder pressure, don't you think, Rusty? It's not too much smaller than the solid cam that was recommended by Tim at Bullet.
j par
Well-hung Member
The mystery was why he was even pinging in the first place. Aluminum heads 11 to 1 he should be fine.
j par
Well-hung Member
So you feel that you went from detonation to just on the brink of detonation or it's completely off the table now?
Put a pro shot fogger on the thing. Happy trails.
hosehead
Well-Known Member
It's still fairly close, Jpar. I did advance the timing a litttle when driving it the other day and I could get it to ping. A much lighter ping, granted but it's close. It likes it at 16 initial. Runs hard.
Should have mentioned that earlier.
j par
Well-hung Member
I would think it would like more initial than that. I guess the real question is what is it at all in?
j par
Well-hung Member
Oh yeah also I know nothing about Big Block so I don't even know if it's different.
j par
Well-hung Member
That's what I'm talking about, to the Moon baby!
hosehead
Well-Known Member
As soon as it stops raining, I'll let you know.
j par
Well-hung Member
I assume as long as the heads will flow the extra cam then you'll get extra. I'm maxed out on what my head's can do so a change up wouldn't do any good.
You do know the extra overlaps going to make drivability go down?
You do know the extra overlaps going to make drivability go down?
j par
Well-hung Member
It doesn't rain there!?
hosehead
Well-Known Member
It most certainly does. And all of Los Angeles forgets how to drive.......
yellow rose
Overnight Sensation
LOL!!!
The 10.1:1 slugs are down in the hole .048"..........
j par
Well-hung Member
You dare LOL me! LOL What the hell?
It's what everyone is saying, but yet there it is, pinging. Except for a couple,.....I've never been stuck with 91 octane max, so I can't speak as to it's ultimate abilities. I
posted some numbers and looked for someone to point out where it'd be wrong, I'll have to do it Myself I guess, did some digging back into the Mopar std. racing manual.
The only ??? I've asked that hosehead hasn't answered probably won't be unless He yanks a head off. It sounds like He's not going to get an answer from the machinist.
What is the exact piston to deck height on this thing? If the piston is only .030" taller than the 10.1:1 slugs He's going to be close to .060" for a quench/squish distance.
Not good. If it's what I posted, well, that explains itself. But the comp. dist. listed by NAPA & F-M in the catalogs has what I perceive to be a discrepancy, so that's the main
issue with the numbers. Now back to "he should be fine"!!
j par
Well-hung Member
Honestly I read that twice and don't have a clue of what you're talking about?!It's what everyone is saying, but yet there it is, pinging. Except for a couple,.....I've never been stuck with 91 octane max, so I can't speak as to it's ultimate abilities. I
posted some numbers and looked for someone to point out where it'd be wrong, I'll have to do it Myself I guess, did some digging back into the Mopar std. racing manual.
The only ??? I've asked that hosehead hasn't answered probably won't be unless He yanks a head off. It sounds like He's not going to get an answer from the machinist.
What is the exact piston to deck height on this thing? If the piston is only .030" taller than the 10.1:1 slugs He's going to be close to .060" for a quench/squish distance.
Not good. If it's what I posted, well, that explains itself. But the comp. dist. listed by NAPA & F-M in the catalogs has what I perceive to be a discrepancy, so that's the main
issue with the numbers. Now back to "he should be fine"!!
hosehead
Well-Known Member
Well, it isn't pinging anymore, so, no, I am not going to pull a head off. As far as how far down in the hole, the machinist said the deck had not been cut as far as he could tell and that he only surfaced the deck. "Probably less than ten thousandths" to quote him. And from what I've learned the deck heights could vary from the factory, no?
It's running great now and not pinging at all.
I DO think it should be fine.
I think it was an ignition issue mostly.
It's running great now and not pinging at all.
I DO think it should be fine.
I think it was an ignition issue mostly.
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