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Search found 170 matches

by agertz1
Mon Jan 30, 2023 2:46 pm
Forum: Engine Tech
Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
Replies: 24
Views: 1027

Re: Mating Two V8's, ( Freight Train) vs. Harmonics

Can anyone help with this ? Question is amount of oil for (28) bearings ?
#-o Art.
by agertz1
Thu Jan 26, 2023 11:49 am
Forum: Engine Tech
Topic: 5/64 rings - 60/40 valve split heads
Replies: 9
Views: 495

Re: 5/64 rings - 60/40 valve split heads

5/64 = too much drag/tension ? How about lightening and reducing tension ? How about a skilled design, groove on the back side ?
I know a machinist who works cheap/lol. Art. #-o
by agertz1
Thu Jan 26, 2023 11:43 am
Forum: Engine Tech
Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
Replies: 24
Views: 1027

Re: Mating Two V8's, ( Freight Train) vs. Harmonics

How much oil- really ? Two small (4L.) v8's, low hp., 2.8" stroke,6k. max rpm. I'm being told 1 pressure stage of a gerotor dry-sump pump will not work, even at crank speed, 28 bearings. Suggestions ? Thanks, Art.
by agertz1
Tue Jan 24, 2023 6:59 pm
Forum: Engine Tech
Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
Replies: 24
Views: 1027

Re: Mating Two V8's, ( Freight Train) vs. Harmonics

Using a dragster, twin-plug set-up. Two distributors on a common drive. Idea is somewhat old-school look, with some smarts added. Rocker cover, spanning both engines, will be stress mounted, each side. Anyone have a good drive ratio, crank to dry-sump pump ? Thanks, Art.
by agertz1
Mon Jan 23, 2023 7:11 pm
Forum: Engine Tech
Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
Replies: 24
Views: 1027

Mating Two V8's, ( Freight Train) vs. Harmonics

4L. Rovers, maybe 250 hp. ea. Snout of rear engine is splined and is plugged directly into rear of front crank. Indexed for firing at every 45 deg. Harmonics should be "nodal" at this location ? Plan to use 2" and 2.3" journals on front crank and 2.188"/ 2.5" on rear crank,( even less harmonics) ? D...
by agertz1
Thu Dec 22, 2022 7:53 pm
Forum: Engine Tech
Topic: 429 Cobra Jet newbie
Replies: 1
Views: 246

429 Cobra Jet newbie

A friend just bought this and he is on a budget. No intake yet. Word is, a roller cam will really wake it up ? 95% street, plenty of gear and about 3K lbs. Isky mech. roller of 265 deg. at .050" too much ? Will 302 Ford, tie-bar hyd. lifters work ? Lengthen slot in tie bar ? Will they tame the cam s...
by agertz1
Tue Jun 14, 2022 7:17 pm
Forum: Engine Tech
Topic: BME Aluminium Rods cycle life circa 1981?
Replies: 14
Views: 3498

Re: BME Aluminium Rods cycle life circa 1981?

Is it ok to say " aluminum metal matrix", without Men In Black showing up ? 30% silicon carbide particulate. Less thermal growth than steel,
better wear than cast iron. Forged in "Area 51", get back ! 8)
by agertz1
Wed Jun 08, 2022 4:54 pm
Forum: Engine Tech
Topic: plenum divider on single plane intake
Replies: 19
Views: 1330

Re: plenum divider on single plane intake

More work=more filling ? Well maybe, what if divider could smoothly telescope, up from the floor of that single plane ? Control it with mechanical linkage or manifold vac. ? Would need enough rigidity not to bind or degrade. Art.
by agertz1
Wed Jun 08, 2022 4:27 pm
Forum: Engine Tech
Topic: Bend-over gas prices
Replies: 26
Views: 1451

Re: Bend-over gas prices

My post was actually asking for technical advice about improving thermal efficiency, during use of E85 in a flex fuel engine ? Being in Ca.,
I have no political ax to grind/lol.
Tech advice please ? Art. #-o
by agertz1
Tue Jun 07, 2022 7:43 pm
Forum: Engine Tech
Topic: Bend-over gas prices
Replies: 26
Views: 1451

Bend-over gas prices

$6/gal. for 87 octane, welcome to Ca., or not. I want to fight back ! I want most direct route, to a more efficient flex-fuel, inline four ? Perhaps something like a Chevy Cruze 1.4L turbo ? In other words, if turbo had enough capacity for more boost on E85, "could" improve mileage with E85, in stre...
by agertz1
Wed Apr 06, 2022 4:18 pm
Forum: Engine Tech
Topic: Belt drive turbo compressor ?
Replies: 19
Views: 1376

Belt drive turbo compressor ?

Centrifugal blowers tend to be expensive. Big used turbos, pretty cheap. See where this is going ? Not saying this is a good idea, just an idea. Seems like with some development, you might take a LARGE turbo compressor, add ceramic bearings, including the needed overdrive planet gear set, and ? #-o
by agertz1
Thu Feb 24, 2022 12:25 pm
Forum: General Tech
Topic: What I.C.E. for hydrogen ?
Replies: 0
Views: 813

What I.C.E. for hydrogen ?

Not knowing any better, I like the opposed piston, four cycle, for several reasons ? Surface to volume , energy density, CR. potential and burn speed. The more difficult part, four cycle. I like peripheral slide valves,(2 multi-port int./exh.). Interposed, facing each other, where pistons meet. 1-2 ...
by agertz1
Thu Feb 17, 2022 11:42 am
Forum: Engine Tech
Topic: Do any of the shops here do lifter refacing?
Replies: 34
Views: 6593

Re: Do any of the shops here do lifter refacing? r gouge.

Moses and the 30" radius ? Was this tablet # 11 ? Smaller lifter diameters, ( GM/etc.) are ramp speed limited by a: diameter and b: radius. Where is the law, you can't possibly make a smaller radius work ? #-o
by agertz1
Wed Feb 16, 2022 7:19 pm
Forum: Engine Tech
Topic: Round int. runner, rect. port in head
Replies: 8
Views: 1133

Re: Round int. runner, rect. port in head

Just reading that my Weber IDF's , 44mm or 48mm carbs can use E85, why wouldn't I ? Trumpet tip to valve seat should be in 10"-12" range. Which size start with ? Make intake runner same size as 48 mm.? Seems like I want runner angle, more complimentary to "hump" of runner in head ? I could resort to...
by agertz1
Fri Feb 11, 2022 7:02 pm
Forum: Engine Tech
Topic: Round int. runner, rect. port in head
Replies: 8
Views: 1133

Re: Round int. runner, rect. port in head

I haven't built intake, yet. I like the round alum. tubing, I have. It's 6061 , mandrel bent 1.61" id. with .14" wall. This means I can heat it and stretch it to conform with head, rectangular port. I find it interesting, no one mentions throttle bore mismatch to IR runners ? Goal is 1.47hp./cu. in....