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Search found 2617 matches

by Tuner
Tue Jan 31, 2023 10:09 am
Forum: Engine Tech
Topic: Qualfast valves?
Replies: 16
Views: 648

Re: Qualfast valves?

The wider margin is better for flow, that and additional heat capacity is why it is there.
by Tuner
Tue Jan 31, 2023 10:04 am
Forum: Engine Tech
Topic: Low speed (1500-1800 RPM) driveability issue
Replies: 145
Views: 8221

Re: Low speed (1500-1800 RPM) driveability issue

For Tuner's information, look up "Intake Distribution Issues". From 2017, page 2. Sorry, I don't have the patience to try and add a link. I am so called, computer challenged. :oops: :D https://www.speed-talk.com/forum/viewtopic.php?f=1&t=50014 I recall measuring an original 289 Ford spacer for this...
by Tuner
Tue Jan 31, 2023 10:01 am
Forum: Engine Tech
Topic: Low speed (1500-1800 RPM) driveability issue
Replies: 145
Views: 8221

Re: Low speed (1500-1800 RPM) driveability issue

Brian M wrote: Tue Jan 31, 2023 9:22 am For Tuner's information, look up "Intake Distribution Issues". From 2017, page 2.
Sorry, I don't have the patience to try and add a link. I am so called, computer challenged. :oops:
:D

viewtopic.php?f=1&t=50014
by Tuner
Tue Jan 31, 2023 7:34 am
Forum: Engine Tech
Topic: Low speed (1500-1800 RPM) driveability issue
Replies: 145
Views: 8221

Re: Low speed (1500-1800 RPM) driveability issue

I hope this is not too much word salad for comfortable consumption. The 1" spacer between the carb and manifold on a 225 HP 289 has a 360 deg. lip and the difference between with and without it (the lip) is one of the things I know that gives the most pause for pondering about carb tuning. Tuner, ap...
by Tuner
Mon Jan 30, 2023 5:26 pm
Forum: Engine Tech
Topic: Low speed (1500-1800 RPM) driveability issue
Replies: 145
Views: 8221

Re: Low speed (1500-1800 RPM) driveability issue

Let me say it this way. Why the OE’s do what they do isn’t why I do what I do. I’ll type it slower for you. If you can’t make a single plane intake outperform a dual plane intake you need to take up putt-putt golf. Horse and buggy thinking is what it is. Just because you are living in the stoned ag...
by Tuner
Sat Jan 28, 2023 8:17 pm
Forum: Engine Tech
Topic: Head Porting for Fuel Milage
Replies: 51
Views: 1515

Re: Head Porting for Fuel Milage

It is in this thread on page 6. Cliff notes = "sharp 90 deg. edges are good" https://www.speed-talk.com/forum/viewtopic.php?f=1&t=58475 I recall this image being posted a few times in the last 15 years and being better able to read it, but I couldn't find the right thread. The search function in thi...
by Tuner
Sat Jan 28, 2023 5:23 pm
Forum: Engine Tech
Topic: Head Porting for Fuel Milage
Replies: 51
Views: 1515

Re: Head Porting for Fuel Milage

If it uses a carburetor or throttle body injection there should be no sharp corners within and very smooth transitions keeping the fuel in suspension. I wonder how many manifolds with beautifully rounded, faired in carb openings are throwing away some drive-a-bility unnecessarily. Back in 1972 the ...
by Tuner
Wed Jan 25, 2023 2:13 am
Forum: Engine Tech
Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
Replies: 26
Views: 1126

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

I was worried that he might be RIP. I checked some on the web and didn't find anything. He and Enriquez ran a dual engine dragster with injected Hemis on nitro.

Image
by Tuner
Tue Jan 24, 2023 8:37 pm
Forum: Engine Tech
Topic: Mating Two V8's, ( Freight Train) vs. Harmonics
Replies: 26
Views: 1126

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

Gene Adams is the guy to ask about this.
by Tuner
Tue Jan 24, 2023 8:33 pm
Forum: Engine Tech
Topic: Cast Iron Ring Mods
Replies: 9
Views: 409

Re: Cast Iron Ring Mods

Yes, Tuner. My thoughts were it would be fine on the second ring ground as a Napier cut. I worry a bit about the top ring especially if you can't twist that top ring without breaking it. I've done plenty of Dykes compression and Napier second rings in severely limited circle track classes but the p...
by Tuner
Tue Jan 24, 2023 7:13 pm
Forum: Engine Tech
Topic: Cast Iron Ring Mods
Replies: 9
Views: 409

Re: Cast Iron Ring Mods

Sort of like a Napier ring but without the taper face? Would you narrow it (cut it) on the upper or lower side?

https://www.highpowermedia.com/Archive/the-napier-ring
by Tuner
Thu Jan 19, 2023 11:25 pm
Forum: Engine Tech
Topic: Ongoing Detonation Issue Help!!!!!
Replies: 79
Views: 2909

Re: Ongoing Detonation Issue Help!!!!!

Ishiftem wrote: Thu Jan 19, 2023 1:39 am Isn't technology great? I have a RPM DL10 data logger with a G meter. Though the G meter trace is wavy as all get out. Unless I can figure out why it's useless.
Perhaps the G accelerometer sensor is vibrating because it is mounted some way that is less than ideal.
by Tuner
Thu Jan 19, 2023 11:21 pm
Forum: Engine Tech
Topic: Comp Cams passes off 50 year old technology, as "New" cutting edge tech.
Replies: 49
Views: 3255

Re: Comp Cams passes off 50 year old technology, as "New" cutting edge tech.

So, the old GM '140' cam is not so bad after all? They will turn plenty of RPM with not much spring pressure and are easy on parts, even when you know they were run in a lofting condition (AKA valve float) for more time than 'modern' cams have parts flying every which way and loose, almost as if by ...
by Tuner
Thu Jan 19, 2023 2:34 am
Forum: Engine Tech
Topic: Gearing Down for Altitude: Dyno Results?
Replies: 10
Views: 415

Re: Gearing Down for Altitude: Dyno Results?

Don't get killed in the Mexico City Earthquake. Built on drained lake Texcoco, unstable, loose soil, and not so far from active tectonic plates. 5000+ killed in the '85 earthquake. The bike will be the least of your problems there. More to worry about from cartels and crooked federales than earthqu...
by Tuner
Thu Jan 19, 2023 2:29 am
Forum: Engine Tech
Topic: Ongoing Detonation Issue Help!!!!!
Replies: 79
Views: 2909

Re: Ongoing Detonation Issue Help!!!!!

There must be some means in the software to apply smoothing to individual channels.