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Search found 51 matches

by dannobee
Wed Jan 15, 2020 1:13 pm
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 85
Views: 1958

Re: 1400 hp Big Chevy combinations

Ross shows 8:1 blower/turbo pistons with pins. Add rings for $800/set. I think he said he had a 0.030 over block, right? https://www.summitracing.com/parts/ros-82016/overview/ Eagle rods $550/set https://www.summitracing.com/parts/esp-63853dl19/overview/make/chevrolet Forged scat crank $800 https://...
by dannobee
Tue Jan 14, 2020 3:15 pm
Forum: Engine Tech
Topic: Bearing Clearance
Replies: 29
Views: 1234

Re: Bearing Clearance

See what similar engines in that class are running. There's only a few players in small ship/locomotive/generator/ag water pump engines in that area. MAN, Cat, EMD, etc. See what they're running for bearing clearances in their tried and true engines. If yours are way out of whack, look there. If the...
by dannobee
Mon Jan 13, 2020 11:13 am
Forum: Engine Tech
Topic: 4150 4778 Holley carb questions
Replies: 12
Views: 487

Re: 4150 4778 Holley carb questions

Here's the factory cheat sheet on what jets it came with stock. https://documents.holley.com/techlibrary_carb_numerical_listing.pdf If it's street driven, you should probably keep the power valve but remember, if it backfires, it'll probably be toast and run really rich. 65 power valve was stock. If...
by dannobee
Sun Jan 12, 2020 10:59 pm
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 85
Views: 1958

Re: 1400 hp Big Chevy combinations

At first I thought it would was close to impossible, but I was bored today and after digging around, it just might be doable for a few pulls on the dyno (then I suppose you could back off the boost and drive it around-still FAR from an ideal build and most likely a ticking time bomb if you use all t...
by dannobee
Sun Jan 12, 2020 2:46 am
Forum: Engine Tech
Topic: 1400 hp Big Chevy combinations
Replies: 85
Views: 1958

Re: 1400 hp Big Chevy combinations

That's gonna be tough. But as others have asked, how long do you need it to live? Or is this just to see a big number on the dyno before something lets go? And what parts are you starting with? Throw some ebay chinese turbos and intercoolers on it, some decent forged pistons with chinese H-beam rods...
by dannobee
Fri Jan 10, 2020 2:32 pm
Forum: Engine Tech
Topic: Engine swap ideas for a 1979 Mercedes 240D
Replies: 79
Views: 1737

Re: Engine swap ideas for a 1979 Mercedes 240D

Isn't the rover V8 just a refined/updated 215 cu in Buick?
by dannobee
Thu Jan 09, 2020 7:19 pm
Forum: Engine Tech
Topic: Gains with lift beyond the point of max airflow?
Replies: 25
Views: 1170

Re: Gains with lift beyond the point of max airflow?

Back when Super Stock had to run "stock" heads, they had huge cams and the throttle response wasn't bad at all.
by dannobee
Thu Jan 09, 2020 10:51 am
Forum: Engine Tech
Topic: Gains with lift beyond the point of max airflow?
Replies: 25
Views: 1170

Re: Gains with lift beyond the point of max airflow?

The simple answer is yes. As others have stated, the time that the valve is flowing more air will help the overall flow volume. How much work have you done to the backside of the valves? If you're limited on the port and bowl, get a bunch of junk valves and grind various back cut angles and see if t...
by dannobee
Wed Jan 08, 2020 12:21 pm
Forum: Engine Tech
Topic: Small block Chevy wet sump oiling improvement
Replies: 17
Views: 1026

Re: Small block Chevy wet sump oiling improvement

Take the two lifter galley plugs out in the back of the block and use these restrictors. Drill them out to 0.080" if it makes you feel better. Used them for years in circle track engines.

https://www.moroso.com/oil-restrictor-kit22010/
by dannobee
Sat Jan 04, 2020 11:39 pm
Forum: Engine Tech
Topic: Rhoads Lifter On Solid Lifter Cam - Setting Lash
Replies: 13
Views: 722

Re: Rhoads Lifter On Solid Lifter Cam - Setting Lash

While I don't have direct experience with Rhoads lifters, I do know that they were used in the lower division cars when a vacuum rule was implemented (something like at least 10" Hg at idle). The valves would rattle around like a skeleton jerkin-off at idle but they'd pass the vacuum rule. It allowe...
by dannobee
Fri Jan 03, 2020 11:06 am
Forum: Engine Tech
Topic: Back cut valves...
Replies: 22
Views: 1206

Re: Back cut valves...

Start with a 22 deg back cut if you don't have access to a bench. Cut it back until it comes within 0.030" of the witness mark with the seat. And if the port is lousy to start with and you're forced to run stock valves, get rid of that ski jump on the intake valve. Low and mid lift will almost alway...
by dannobee
Wed Jan 01, 2020 12:53 pm
Forum: Engine Tech
Topic: Mill cylinder head/seat work without pilot
Replies: 51
Views: 2259

Re: Mill cylinder head/seat work without pilot

Factories drill the guide hole and seat recess in one operation, then press in the guides and seat. I remember seeing a video of the cylinder head robot machine but don't know if it was available outside of GM (Tonawanda factory) Here's how Brodix does them. Starting about 8:53 in the video. With a ...
by dannobee
Sun Dec 29, 2019 11:22 am
Forum: Engine Tech
Topic: Mill cylinder head/seat work without pilot
Replies: 51
Views: 2259

Re: Mill cylinder head/seat work without pilot

How could you possibly hold concentricity even remotely close without a pilot? It's hard enough to keep it within a thou or half a thou WITH a piloted cutter. And good luck if there's even a hint of chatter. And if your handle suggests air cooled porsche 911 engines, those guides are short and wear ...
by dannobee
Sat Dec 28, 2019 12:18 am
Forum: Engine Tech
Topic: The Twisted Path to Power
Replies: 11
Views: 624

Re: The Twisted Path to Power

Yeah, dump that intake and go for something truly "period correct."

https://www.ebay.com/itm/McLaren-Lola-B ... 3447277551
by dannobee
Wed Dec 25, 2019 11:05 pm
Forum: Engine Tech
Topic: Rochester 2bbrl circle track
Replies: 21
Views: 1005

Re: Rochester 2bbrl circle track

Guys, I think the OP said "gauge legal." Don't know about your track/class, but when I was racing circle track the techs had gauges for the venturis AND the boosters. If it failed either one, you were out.