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Search found 1412 matches

by Schurkey
Fri Aug 07, 2020 1:59 pm
Forum: Engine Tech
Topic: Combustion chamber size, piston crown and power delivery.
Replies: 6
Views: 266

Re: Combustion chamber size, piston crown and power delivery.

Wild Guess: You'd have to build both engines, and test 'em to see which works better. And then, it's possible that the differences may come down to individual tuning and/or dyno repeatability. Second Guess: The difference between flat-top and dish will be less than the difference between flat-top an...
by Schurkey
Sun Jul 19, 2020 4:29 pm
Forum: Engine Tech
Topic: Blue streak Nascar plug wires
Replies: 8
Views: 576

Re: Blue streak Nascar plug wires

I was very wrong about "HEI-style" connectors. Try these: http://www.pageturnpro.com/Four-Seasons/73236-2015-Standard-Wire-Cable-Illustrated-Parts-Guide/index.html http://www.pageturnpro.com/Four-Seasons/77301-Blue-Streak-Wire-Application-Illustrated-Parts-Guide/index.html#1 Requires Adobe Flash. Cl...
by Schurkey
Sun Jul 19, 2020 2:55 pm
Forum: Engine Tech
Topic: Blue streak Nascar plug wires
Replies: 8
Views: 576

Re: Blue streak Nascar plug wires

So it's plain ol' ordinary "HEI"-style, except big enough to clamp around a 9mm wire instead of 8mm?

"I" would be seeing how the usual 8mm stuff worked. I've put 7 mm plug wire ends on 8mm wire before. Any parts store in America can provide those terminals.

Or am I still misunderstanding?
by Schurkey
Sun Jul 19, 2020 3:42 am
Forum: Engine Tech
Topic: P1404 code 1999 suburban L31
Replies: 16
Views: 458

Re: P1404 code 1999 suburban L31

at very light throttle acceleration or cruise, it bucks, misfires, burbles, etc...and it all clears up as soon as you give it more throttle... ...The P1404 code on this means the egr valve is stuck in the closed position according to my scan tool. Does the drivability symptoms match a stuck closed ...
by Schurkey
Sun Jul 19, 2020 3:26 am
Forum: Engine Tech
Topic: Blue streak Nascar plug wires
Replies: 8
Views: 576

Re: Blue streak Nascar plug wires

Photo of the coil terminal?
by Schurkey
Sat Jul 18, 2020 12:16 am
Forum: Engine Tech
Topic: Hex-a-just timing set failure
Replies: 16
Views: 918

Re: Hex-a-just timing set failure

How wide is the Morse chain on the TH425 Toronado/Eldorado front-drive transmission?
by Schurkey
Fri Jul 17, 2020 3:16 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: How about a "Vintage Engine" tech forum
Replies: 49
Views: 1060

Re: How about a "Vintage Engine" tech forum

I'd be happier with a "Street" vs. "Competition" division, rather than "Vintage" vs. "Non-Vintage" (If "vintage" is determined by whether or not it's "competitive"). But I'm happiest with NO division beyond what's already here. I'll let the threat titles speak for themselves; if I'm interested, I'll...
by Schurkey
Fri Jul 10, 2020 12:53 pm
Forum: Engine Tech
Topic: Best power steering fluid to quiet fussy pump
Replies: 4
Views: 327

Re: Best power steering fluid to quiet fussy pump

The PS on my Trailblazer whined like a two-year-old.

Instantly fixed with GM "Cold Climate" PS fluid. Of course, this was in the Frozen Wastelands, in winter.
by Schurkey
Sun Jul 05, 2020 12:22 am
Forum: Engine Tech
Topic: Steel Main cap material
Replies: 25
Views: 956

Re: Steel Main cap material

Vega: alloy block and steel head. Ooops. :lol: Was the Vega engine problem the iron head, or the open-deck block? We put aluminum heads on iron blocks and think nothing of the material mis-match due to coefficient of expansion. There've been some head gasket issues, largely solved with multi-layer ...
by Schurkey
Sat Jul 04, 2020 3:03 am
Forum: Engine Tech
Topic: Atlas engine family.
Replies: 1
Views: 313

Re: Atlas engine family.

Wifey drives an '03 Trailblazer. I think the thing's got VERY adequate power, for a six-popper. About a quarter-million miles on it; mostly trouble-free; although I think I'm seeing some decline in that aspect. Bought a second "parts car"; so I've got a six-popper (4.2L) and driveline that's begging...
by Schurkey
Sat Jul 04, 2020 2:56 am
Forum: Engine Tech
Topic: Ford TFI coils...
Replies: 5
Views: 296

Re: Ford TFI coils...

I'd expect the "Ford" coil to be just fine. Like most other electrical parts, the resistance/impedance, capacitance and inductance are the important considerations. Resistance is easy to measure, the others not so much, at least with typical "automotive" meters. Resistance and inductance are importa...
by Schurkey
Sun Jun 21, 2020 1:50 pm
Forum: Engine Tech
Topic: Ignition curve discussion
Replies: 24
Views: 1135

Re: Ignition curve discussion

Is it the case that the engine would like more and more advance as the revs build, and the reason for not adding more advance after 3000 rpm or so is because you just run up against detonation? Just curious what you all think. My understanding--from listening to other folks, not from my own indepen...
by Schurkey
Tue Jun 16, 2020 2:48 am
Forum: Engine Tech
Topic: 454 BBC blocks
Replies: 11
Views: 891

Re: 454 BBC blocks

what are the differences in the oil systems? The Mk IV oiled kinda-like a "Side-Oiler" 427 Ford--main oil gallery along the lower edge of the block. Goes from back of block all the way to the front, curved. Had a bunch of small pipe plugs that have to come out to properly clean those oil passages (...
by Schurkey
Sun Jun 14, 2020 11:30 pm
Forum: Engine Tech
Topic: Do electric turbo chargers work???
Replies: 36
Views: 2491

Re: Do electric turbo chargers work???

Electric "turbo"? Sounds like the Eco-crazy 2020 version of the old Turbonique ads from the back of '60s Hot Rod magazine. Substitute an electric motor for a monopropellant-fueled turbine/jet, and "wallah". https://cocosvariety.com/products/turbonique-supercharger Similar Turbonique monopropellant j...
by Schurkey
Wed Jun 03, 2020 11:57 pm
Forum: Engine Tech
Topic: energy suspension motor mounts
Replies: 13
Views: 623

Re: energy suspension motor mounts

WHICH "Energy Suspension" motor mounts? They have multiple part numbers.

The ES engine mount cushions supposedly intended to fit my '88 K1500 were ENTIRELY different from OEM; I sent 'em back because I was sure they wouldn't fit.