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Search found 535 matches

by dannobee
Sun Nov 28, 2021 7:45 am
Forum: Engine Tech
Topic: Polishing side beams
Replies: 23
Views: 998

Re: Polishing side beams

I spent a great deal of my time reworking stock components due to restrictive rule requirements that did nothing to reduce the cost of racing. If you are not required to do it, go aftermarket. Time saved,better Q.c.,stronger components = less cost in the long run. ^^^^ This^^^^ I've been in the sam...
by dannobee
Thu Nov 25, 2021 10:39 am
Forum: Engine Tech
Topic: 2.56 Gear, Stock Converter, 4100 Pounds, NA 11s?
Replies: 122
Views: 3249

Re: 2.56 Gear, Stock Converter, 4100 Pounds, NA 11s?

Now that is more believable, and more frightening :mrgreen: I can imagine a successful 1/2 mile race; it would go by very quickly. My squirrel mind can only imagine the dozens of mechanical landmines which await a 51 year old car during a 1, 2, 3, or 4 mile race. Thanks for the math Stan, it's appr...
by dannobee
Wed Nov 24, 2021 2:42 pm
Forum: Engine Tech
Topic: Camshaft?
Replies: 11
Views: 958

Re: Camshaft?

First question is what size and type of track? You might be better off having Mike grind him the right cam, even though it'll set him back a little money. Walter was saying that the exhaust duration was too high. I was thinking that the intake duration was too low. :shock: The heads would likely not...
by dannobee
Tue Nov 23, 2021 2:36 pm
Forum: Engine Tech
Topic: 2.56 Gear, Stock Converter, 4100 Pounds, NA 11s?
Replies: 122
Views: 3249

Re: 2.56 Gear, Stock Converter, 4100 Pounds, NA 11s?

It's not really accurate to call it "stock stall speed." Slipping a TH350 torque converter in a big block car was a nice (and inexpensive) way to get a higher stall speed with an otherwise stock big block back in the day. Put a tach on it and test the true stall speed when you get a chance, especial...
by dannobee
Mon Nov 22, 2021 7:37 am
Forum: Engine Tech
Topic: SBF- bearing clearance with calipers & 0.001 US bearings
Replies: 4
Views: 264

Re: SBF- bearing clearance with calipers & 0.001 US bearings

Calipers are not the right tool for the job. There's a reason that a lot of machinists call them "very near" calipers.

Get a mic that measures in tenths of a thousandth.
by dannobee
Sun Nov 21, 2021 10:17 am
Forum: Engine Tech
Topic: Oil Aeration with dry sump
Replies: 7
Views: 324

Re: Oil Aeration with dry sump

https://www.jegs.com/i/ZMAX/706/6040/10 ... fvEALw_wcB

Do you need the 8" one? We've used the 6" ones in circle track racing for years.
by dannobee
Sun Nov 21, 2021 9:20 am
Forum: Engine Tech
Topic: Oil Aeration with dry sump
Replies: 7
Views: 324

Re: Oil Aeration with dry sump

Yes, still available. https://www.obergfilters.com/

Racor also made/makes them that look awfully similar if not an exact copy. Maybe Racor bought Oberg, dunno.
by dannobee
Sat Nov 20, 2021 12:44 pm
Forum: Offtopic Forum
Topic: Three Level 100 Blood Demons will have to be killed
Replies: 9
Views: 480

Re: Three Level 100 Blood Demons will have to be killed

Demons are ok. But I really like that new Challenger Drag Pak.
by dannobee
Thu Nov 18, 2021 7:36 pm
Forum: Engine Tech
Topic: LT6" Heimholtz Tuning 2 Plenums Dynamically??
Replies: 2
Views: 219

Re: LT6" Heimholtz Tuning 2 Plenums Dynamically??

Since it has a flat crank and doesn't have two cylinders firing right next to each other, the dual plenums can be used to resonance tune the pulses. This is only possible on flat crank engines and boxer style flat engines as you need each side to alternate cylinder filling. Porsche has used similar ...
by dannobee
Thu Nov 18, 2021 12:05 pm
Forum: Engine Tech
Topic: Lowering exh rocker ratio.
Replies: 35
Views: 1318

Re: Lowering exh rocker ratio.

With respect to A/F ratio, how was the fuel distribution? Did you use an O2 sensor or thermocouple for each cylinder?
by dannobee
Thu Nov 18, 2021 7:21 am
Forum: Engine Tech
Topic: dummy crank pulley to neutralize strain on crank?
Replies: 11
Views: 506

Re: dummy crank pulley to neutralize strain on crank?

There's a reason that they make sbc cranks with bbc (or bigger) snouts.
by dannobee
Wed Nov 17, 2021 6:47 pm
Forum: Engine Tech
Topic: Steel, aluminum, or carbon fiber
Replies: 16
Views: 709

Re: Steel, aluminum, or carbon fiber

I know they made a difference in our paved oval track cars. But we're accelerating the same mass over and over again. A few inches down every straightaway add up to car lengths before you know it. I doubt it would make that much difference in a drag car.
by dannobee
Wed Nov 17, 2021 7:46 am
Forum: Engine Tech
Topic: Real or not?
Replies: 5
Views: 443

Re: Real or not?

"...asking for a friend."
by dannobee
Mon Nov 15, 2021 2:48 pm
Forum: Engine Tech
Topic: Lowering exh rocker ratio.
Replies: 35
Views: 1318

Re: Lowering exh rocker ratio.

If it gained hp by reducing the exhaust rocker ratio, the exhaust lobes are too big. On our super stocker, we knew the cam was too big when lower rocker ratio did the same thing and then even opened the lash to 0.035". It may have sounded like a skeleton jerkin off, but that's where it went the fast...
by dannobee
Sun Nov 14, 2021 8:17 pm
Forum: Engine Tech
Topic: How would this seat be machined?
Replies: 15
Views: 924

Re: How would this seat be machined?

hoodeng wrote: Sun Nov 14, 2021 7:17 pm https://www.f1technical.net/forum/viewtopic.php?t=15385

How did they get to the inlet side head fastening and what were they?
Head studs. The nuts and washers were accessed under the cams and tightened with a crowfoot looking socket, like some Ferrari heads.