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Search found 670 matches

by exhaustgases
Sat Nov 16, 2019 4:03 pm
Forum: Engine Tech
Topic: Staggered main bearing sizes vintage GM
Replies: 24
Views: 2439

Re: Staggered main bearing sizes vintage GM

... i assume they did it for the same reason they do with cam bearings bores. Why did chevy do it? I'd guess it would be a way to speed up production with whatever method they were using to bore the main housings, but I'm not sure, I don't know how they did it. Before my time. But It may have been ...
by exhaustgases
Tue Nov 12, 2019 9:48 pm
Forum: David Vizard forum
Topic: Let's talk port velocity --
Replies: 13
Views: 633

Re: Let's talk port velocity --

Here' s a novice question: In the context of this thread, is velocity measured on the flow bench? If so, at what test pressure? Or is it computed mean velocity from a running engine? Something like the formula, such as volumetric efficiency * engine speed/2 * cylinder volume / port minimum cross se...
by exhaustgases
Mon Nov 11, 2019 12:39 am
Forum: Offtopic Forum
Topic: Ya know your getting old when you remember
Replies: 9
Views: 222

Re: Ya know your getting old when you remember

How many remember diesel selling for .14 per gallon?
by exhaustgases
Sat Nov 09, 2019 3:06 am
Forum: Engine Tech
Topic: What's with these goofy SBC rocker arms?
Replies: 21
Views: 1131

Re: What's with these goofy SBC rocker arms?

Maybe a case of someone finding out that things work different in real life than they do in a CAD program?
by exhaustgases
Sat Nov 09, 2019 3:01 am
Forum: Offtopic Forum
Topic: Engine Masters gone
Replies: 6
Views: 305

Re: Engine Masters gone

Only problem it catered to only one side of the country, not everyone can travel the distance.
by exhaustgases
Thu Nov 07, 2019 12:29 am
Forum: Engine Tech
Topic: Straightened crankshaft revisited
Replies: 15
Views: 828

Re: Straightened crankshaft revisited

This will straighten the shaft by bringing the low side of the shaft back to true by upsetting and stretching the metal and it will remain this way in use. If the shaft relaxes during grinding this area repeat the process after grinding. Relax and stretch??? Maybe compressive stress is relaxed when...
by exhaustgases
Wed Nov 06, 2019 6:51 pm
Forum: Offtopic Forum
Topic: Paint stripper Banned
Replies: 10
Views: 569

Re: Paint stripper Banned

Been coming for some years now. As Walter said, the restrictions are largely targeted at the consumer level and not at those holding a EPA hazmat generator number. That said, we all can expect increasing restriction going forward as chemicals that are environmentally persistent or are classified as...
by exhaustgases
Tue Nov 05, 2019 7:22 pm
Forum: Engine Tech
Topic: mahle piston failure
Replies: 24
Views: 1712

Re: mahle piston failure

The material looks like its been pretty hot. Looks like a heat stress crack in a thinner area.
by exhaustgases
Mon Nov 04, 2019 11:25 pm
Forum: Offtopic Forum
Topic: Ya know your getting old when you remember
Replies: 9
Views: 222

Ya know your getting old when you remember

Curb whiskers, aka curb feelers. Haven't seen any of them in years. And not many places where you would need them now.
by exhaustgases
Mon Nov 04, 2019 11:19 pm
Forum: Offtopic Forum
Topic: Happy Halloween
Replies: 3
Views: 114

Re: Happy Halloween

jed wrote:
Thu Oct 31, 2019 9:01 pm
Trick or treat, smell my feet, give me something good to eat.
Happy Halloween
something sweet to eat!!
by exhaustgases
Mon Nov 04, 2019 6:54 pm
Forum: Engine Tech
Topic: Pros/Cons of using aluminum ring harmonic balancer?
Replies: 21
Views: 726

Re: Pros/Cons of using aluminum ring harmonic balancer?

^^^^^ is this done at time of balancing? The harmonic balancer or what some call a damper, balances out most of the undesirable crankshaft torsional vibrations. The rigidity of the crankshaft is the main factor that will determine what the balancer tuning (/ weight of an oem rubber isolated damper ...
by exhaustgases
Mon Nov 04, 2019 12:15 am
Forum: General Tech
Topic: This can be dangerous
Replies: 14
Views: 865

Re: This can be dangerous

We do some dangerous this and when we walk beside an air compressor every day in our lives we think nothing of it. If we stopped to figure the odds we would get an office job. Air compressor, they should be coating the inside of the tanks to stop the rusting. I would think if the average industrial...
by exhaustgases
Mon Nov 04, 2019 12:00 am
Forum: Engine Tech
Topic: Pros/Cons of using aluminum ring harmonic balancer?
Replies: 21
Views: 726

Re: Pros/Cons of using aluminum ring harmonic balancer?

They need a weight to work, so Al maybe fine if it weighs enough. What I would like to know is how much effort goes into tuning in the after market damper world?
by exhaustgases
Thu Oct 31, 2019 3:00 pm
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: Here is how to do it
Replies: 163
Views: 8422

Re: Here is how to do it

We have already covered the problem of perpetual motion. The bearings would wear out. Atoms and solar systems are a form of perpetual motion, permanent magnets and well doesn't everything have atoms? Your problem is you some how can't see that magnetism can be created with very little electrical pow...
by exhaustgases
Tue Oct 29, 2019 9:16 pm
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: Only electric cars sold in India by 2030
Replies: 100
Views: 17484

Re: Only electric cars sold in India by 2030

So when are all the other messes there going to be cleaned up, like the ship busting industry.
Oh and here is how all those electric cars will be charged, by building lots of these.
https://en.wikipedia.org/wiki/Brahmapur ... ower_Plant