Search found 394 matches

by iadr
Sun Feb 19, 2023 2:43 am
Forum: Engine Tech
Topic: Dave Williams Suicide Slabs Guy
Replies: 3
Views: 1132

Re: Dave Williams Suicide Slabs Guy

He was on the Locost USA (Lotus 7 replica) forum a year or so ago, might still be. Screename TRX.
Had had some health issues- knee, hip, something like that.
by iadr
Wed Feb 01, 2023 2:00 am
Forum: Offtopic Forum
Topic: Any remedies for Fibromyalgia?
Replies: 10
Views: 3527

Re: Any remedies for plantar fasciitis

Think of your arch+Achilles+calf (soleus) muscle as one big assembly. Windlass is the term, I think. Think also that to have the healthy slight upward curve, the foot-bottom flat plantar muscle set can't be bowstring tight, because a curve is a longer "line" than a straight one. So you wan...
by iadr
Sun Jul 18, 2021 5:30 pm
Forum: Engine Tech
Topic: Am I on the Right Track; Budget Lightweight 289 SBF Short Block Build…
Replies: 72
Views: 5402

Re: Am I on the Right Track; Budget Lightweight 289 SBF Short Block Build…

My experience leans more toward Bill-C being correct than AF2, here.
by iadr
Sun Dec 02, 2018 9:09 pm
Forum: Engine Tech
Topic: GM's new 4.2L DOHC twin turbo V-8 !!
Replies: 150
Views: 17095

Re: GM's new 4.2L DOHC twin turbo V-8 !!

Bazman, I don't even know where to start- 200,000 km is half what we expect from a modern car here in Canada (and the US I'd assume). I don't know where you live, Holland maybe? But you just don't get the need in other parts of the world, for durability. We who are critical, are not talking faults i...
by iadr
Sat Sep 22, 2018 12:19 pm
Forum: Engine Tech
Topic: Spec Miata Valve Job
Replies: 13
Views: 3273

Re: Spec Miata Valve Job

randy331 wrote: Thu Sep 20, 2018 10:34 am
mag2555 wrote: Wed Sep 19, 2018 12:33 pm By far and in general the biggest Exh flow gain where it really counts ( at low lift!)
You need to get a new sorce of information.

Randy
Stock cams.

That would make your implication(s) erroneous. ;)
by iadr
Sat Jan 20, 2018 9:22 pm
Forum: Engine Tech
Topic: exhaust on a limited circle track class
Replies: 18
Views: 2631

Re: exhaust on a limited circle track class

You could combine that cam spec and that RPM range/duty if you had really good head- like unlimited. But you don't. So it's a question of keeping the valve open longer to get the fill time you need. You are correct in going with a single pattern tight lobe separation grind, but my guess is you are 1...
by iadr
Sat Dec 23, 2017 11:11 am
Forum: Engine Tech
Topic: Nikasil cylinder plating
Replies: 30
Views: 6631

Re: Nikasil cylinder plating

the last years of the Vega/Astra had the same engine used in the Chevette which was an iron block/head. We did a few of those engines many years back but sleeved them as we seem what the other " GM approved methods" produced for cyl. finishing and the end results were just as bad as the o...
by iadr
Sun Oct 08, 2017 5:13 pm
Forum: Engine Tech
Topic: Mercedes Benz AMG 63 main caps and sump
Replies: 12
Views: 2504

Re: Mercedes Benz AMG 63 main caps and sump

Ford 2.7 Eco Boost has yet another concept that seems pretty radical the first time you see it:

Image
by iadr
Sun Oct 08, 2017 4:51 pm
Forum: Engine Tech
Topic: Ford 6.2 As A Performance Engine?
Replies: 11
Views: 2832

Re: Ford 6.2 As A Performance Engine?

Today I was working on a set of heads brought in by a local Ford dealer off of a 6.2 liter V8. They look really nice and I was curious if this engine has seen much in the way of performance development. I was at the Big Ford Bash about 10 years ago when Don Bowles had an engine which I think was a ...
by iadr
Sun Nov 13, 2016 2:33 pm
Forum: Engine Tech
Topic: The need for new innovation and product for SBC & BBC engine
Replies: 62
Views: 11721

Re: The need for new innovation and product for SBC & BBC en

The sanctioning bodies got fat and lazy (corrupt might be a stronger but accurate term). To me what we see now in NASCAR, Prostock, Fuel, etc, is what we'd have had if in 1964 all sanctioning bodies had insisted on sticking with a rule of only flat heads being allowed to race. The relevance is not t...
by iadr
Sun Oct 16, 2016 9:52 pm
Forum: Engine Tech
Topic: New subaru billet blocks
Replies: 35
Views: 9454

Re: New subaru billet blocks

Aircraft application? Years ago I machined a Subaru engine for a guy and after he paid for it and loaded it up he told me that he was building an experimental airplane and using the Subaru engine in it. I never heard back from the guy. I don't know if that is good or bad. He can just pull over on a...
by iadr
Sun Apr 17, 2016 9:42 am
Forum: Engine Tech
Topic: Design your own cam
Replies: 11
Views: 2824

Re: Design your own cam

RE modular cam-

Not all that far away from what this guy has done (about 23rd of the way down the page):

https://rlg0613.wordpress.com/2016/01/


From:


https://rlg0613.wordpress.com/science-p ... ?order=asc
by iadr
Wed Mar 02, 2016 10:45 pm
Forum: Engine Tech
Topic: diesel compression ratio
Replies: 20
Views: 3372

Re: diesel compression ratio

Mazda is also the same company who had to have a US representative go to Japan and SHOW them that their cars were easily broken into faster than using a key, without damage. Why would someone do that? They have a key, they would just use that. If they don't have a key, it's not their car, who would...
by iadr
Sun Feb 28, 2016 8:13 pm
Forum: Engine Tech
Topic: When are siamesed center exhaust ports a liability on a V8
Replies: 55
Views: 12608

Re: When are siamesed center exhaust ports a liability on a

Back to the Packard (since I can fill a page with my thoughts engineers- inline with the last two posts, and... all I'd get out of it is heartburn). The intake flow was 305-308cfm. In an Edelbrock-head-Pontiac with heads that have been worked a bit, that CFM # is enough to support 640hp. Other guide...
by iadr
Sat Feb 13, 2016 12:29 pm
Forum: Engine Tech
Topic: When are siamesed center exhaust ports a liability on a V8
Replies: 55
Views: 12608

Re: When are siamesed center exhaust ports a liability on a

Ed Henneman (Headers by Ed) was adamant the siamese tube had to be of altered diameter. IIRC his very first header was for his split port Pontiac, and that car got more than a dozen sets of headers built for it over the years.