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Search found 719 matches

by exhaustgases
Tue Aug 11, 2020 6:33 pm
Forum: General Tech
Topic: SAM's SB2 At The EMC And The REC
Replies: 59
Views: 2672

Re: SAM's SB2 At The EMC And The REC

I haven't read the complete thread, but why the drop in compression from like 15 to 1 to 11.9 CR. between the years? I ask because if I am reading right, E85 can work up to like 17 to 1 CR and we all know that power is produced by compression. Just saying is all and I know E85 isn't mentioned here....
by exhaustgases
Tue Aug 11, 2020 6:18 pm
Forum: Engine Tech
Topic: Machining cam blanks from Dura-Bar cast iron bar stock ?
Replies: 14
Views: 395

Re: Machining cam blanks from Dura-Bar cast iron bar stock ?

Yes the Durabar is pricy , but a VW cam is only about a foot long , and the stock cam was cast iron , so the lifters hopefully will be Ok , Thats what I worry about with tool steel , that it is too hard and will eat up the stock lifters, we need to get the material of a stock cam tested so we know ...
by exhaustgases
Tue Aug 11, 2020 6:09 pm
Forum: Offtopic Forum
Topic: Unintended Acceleration
Replies: 14
Views: 602

Re: Unintended Acceleration

Randy, there were some cases some few years back where computer engine management systems had caused such things and folks either didn't have the good sense to switch off the ignition Harry Ya all are forgetting the most important thing with cars nowadays. There is almost no operator manual control...
by exhaustgases
Thu Aug 06, 2020 1:04 pm
Forum: Engine Tech
Topic: Homemade Engine Dyno
Replies: 68
Views: 2852

Re: Homemade Engine Dyno

I was not picking on you. It was just the post I picked that mentioned "Sweep".
by exhaustgases
Wed Aug 05, 2020 7:26 pm
Forum: Engine Tech
Topic: Homemade Engine Dyno
Replies: 68
Views: 2852

Re: Homemade Engine Dyno

Not sure if the comment was directed at me, but ...... 'step testing' was the most common method used until the advent of computer controlled 'sweep testing' on brake dynos It still has it's uses when ignition and fuel mapping I only mention it in this context as a computer controlled sweep control...
by exhaustgases
Wed Aug 05, 2020 6:54 pm
Forum: Engine Tech
Topic: Horsepower and water temperature
Replies: 30
Views: 4225

Re: Horsepower and water temperature

You would think that when cooler more combustion heat would transfer, and would mean a loss of efficiency and HP loss, also one of the reasons for the adiabatic engine experiments in the past. So is this cooler more HP thing only been tested with NA engines with no power adder's?
by exhaustgases
Tue Jul 28, 2020 11:49 pm
Forum: Engine Tech
Topic: Question about 100% water injection
Replies: 34
Views: 1071

Re: Question about 100% water injection

Sounds like they need to be made from Inconel.
by exhaustgases
Tue Jul 28, 2020 11:46 pm
Forum: Offtopic Forum
Topic: Machine shop ban thru loose wording?
Replies: 32
Views: 935

Re: Machine shop ban thru loose wording?

And you can not find this information anywhere else on the net. This should be posted of every machinist site there is, right now.
by exhaustgases
Tue Jul 21, 2020 6:43 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Poppets, sleeves & other stuff
Replies: 15
Views: 331

Re: Poppets, sleeves & other stuff

Sleeve valves as used in the old Aircraft engines, tedious manufacturing, and lubricating of the reciprocating cylinder with in a cylinder not easy.
by exhaustgases
Tue Jul 21, 2020 6:39 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: How about a "Vintage Engine" tech forum
Replies: 49
Views: 1068

Re: How about a "Vintage Engine" tech forum

I haven't been here in awhile, this section was a pleasant surprise.
by exhaustgases
Tue Jul 21, 2020 6:33 pm
Forum: Engine Tech
Topic: Audi V10 damaged bore
Replies: 18
Views: 950

Re: Audi V10 damaged bore

Finish Si cylinders with felt and honing paste Sunnen AN-30 Silicon Compound, to expose the Si crystals.
by exhaustgases
Wed Jun 10, 2020 8:17 pm
Forum: General Tech
Topic: Are David vizard’s books still relevant today?
Replies: 14
Views: 2108

Re: Are David vizard’s books still relevant today?

There is alot of good technical info from the 40's and 50's that is still relevant today. It also seems much of it has been forgotten and the wheel is constantly being reinvented.
by exhaustgases
Tue Jun 09, 2020 3:41 pm
Forum: Engine Tech
Topic: Not on topic but
Replies: 1
Views: 525

Not on topic but

How come the one forum is locked?
by exhaustgases
Fri Apr 17, 2020 8:35 pm
Forum: Engine Tech
Topic: Has racing been completely shut down?
Replies: 102
Views: 5078

Re: Has racing been completely shut down?

Its like a preview of what the green new deal would be like.
Yes this is appropriate, since racing is not an engine tech subject.
by exhaustgases
Tue Apr 14, 2020 10:43 pm
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: Here is how to do it
Replies: 168
Views: 14374

Re: Here is how to do it

If there is a God, I believe he laid down the laws of this universe. The ones you are suggesting would only exist in another universe. Right on, where the problem lies is, you simply don't know all of his creation, you only know a pin head size of his creation that mankind "THINKS" they have figure...