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Search found 4457 matches

by Walter R. Malik
Sat Jan 16, 2021 10:58 am
Forum: Engine Tech
Topic: 7 Degrees Is 7 deg Right?
Replies: 17
Views: 830

Re: 7 Degrees Is 7 deg Right?

7 deg 11/32 retainer & 7 deg 8mm retainer 11/32 keepers with 11/32 valves 8mm keepers with 8mm valves 8mm retainer with 11/32 keepers & 11/32 valve 11/32 retainer with 8mm keepers & 8mm valve It appears you have an 11/32" valve stem but, If anybody is looking to use an 8mm valve with a round "bead"...
by Walter R. Malik
Sat Jan 16, 2021 10:48 am
Forum: Engine Tech
Topic: Billet hyd roller cam core....which gear?
Replies: 7
Views: 250

Re: Billet hyd roller cam core....which gear?

70GS455 wrote: Fri Jan 15, 2021 4:52 pm So my stock iron distributor gear is starting to show moderate wear after only a few dyno pulls. 50'ish lol. I have both a composite and a hardened steel gear. Which is best for a 1050 billet core? Application will be street
What engine ...?
by Walter R. Malik
Thu Jan 14, 2021 9:53 am
Forum: Engine Tech
Topic: 7 Degrees Is 7 deg Right?
Replies: 17
Views: 830

Re: 7 Degrees Is 7 deg Right?

BOOT wrote: Wed Jan 13, 2021 3:52 pm I mean then you could use any 11/32 7deg retainer as a raised height retainer on a 8mm valve & locks, right?
As long as the locks don't show out of the bottom of that retainer, (underside), it will probably work.
by Walter R. Malik
Wed Jan 13, 2021 1:54 pm
Forum: Engine Tech
Topic: Flat Tappet vs Roller Specs
Replies: 36
Views: 1133

Re: Flat Tappet vs Roller Specs

A flat tappet set-up is "velocity" limited. A roller set-up is "acceleration" limited. The difference is, the lifter radius limits the velocity of the flat tappet, and there's no way around that. On a roller, it's the radius of the grinding wheel that limits the acceleration, and you can get around...
by Walter R. Malik
Wed Jan 13, 2021 8:17 am
Forum: Engine Tech
Topic: Flat Tappet vs Roller Specs
Replies: 36
Views: 1133

Re: Flat Tappet vs Roller Specs

What was so secretive about that build? No secrets. I just wanted an answer to the original question. I wasn't looking for a cam recommendation but rather some info on how to compare different cam type specs. A flat tappet set-up is "velocity" limited. A roller set-up is "acceleration" limited. Jus...
by Walter R. Malik
Tue Jan 12, 2021 9:49 am
Forum: Engine Tech
Topic: Flat Tappet vs Roller Specs
Replies: 36
Views: 1133

Re: Flat Tappet vs Roller Specs

A small hydraulic roller cam with very similar running manners to that flat tappet camshaft would probably have a bit more duration off the seat, about the same at .050" and get larger above .100" lobe lift with more total lift. If the head can use it ... the extra lift and "area under the curve" is...
by Walter R. Malik
Mon Jan 11, 2021 3:29 pm
Forum: General Tech
Topic: Epoxy strength test
Replies: 2
Views: 149

Re: Epoxy strength test

Kevin Johnson wrote: Mon Jan 11, 2021 7:03 am https://youtu.be/R3r0UZ7txzs
I have done some tests of my own and when the temp gets above 300 degrees F, epoxies differentiate themselves quickly.
So, be sure to also know the temperature ranges of the different epoxies you are going to use.
by Walter R. Malik
Mon Jan 11, 2021 12:13 pm
Forum: Engine Tech
Topic: Sonny Leonard passed
Replies: 9
Views: 996

Re: Sonny Leonard passed

Sonny was definitely one of the "good" guys in this profession ... this is sad.
by Walter R. Malik
Sun Jan 10, 2021 10:33 am
Forum: Engine Tech
Topic: SADI core hydraulic roller...which distributor gear?
Replies: 3
Views: 245

Re: SADI core hydraulic roller...which distributor gear?

Some say cast iron, others say steel is ok, and several manufacturers push their poly distributor gears. I have no interest in the poly gears...so which material would be correct? NOT ... plain cast iron. Ductile iron nitrided gears are best for SADI ... or composite material. Several companies off...
by Walter R. Malik
Sat Jan 09, 2021 2:05 pm
Forum: Engine Tech
Topic: Gen 3 Hemi ignition coils
Replies: 15
Views: 514

Re: Gen 3 Hemi ignition coils

Circlotron wrote: Fri Jan 08, 2021 7:57 pm a waste spark setup where the plug that fires on the exhaust stroke needs (and wastes) relatively little voltage.
That is exactly what the original Gen III hemi coils were meant to do.
by Walter R. Malik
Fri Jan 08, 2021 11:17 am
Forum: Engine Tech
Topic: Gen 3 Hemi ignition coils
Replies: 15
Views: 514

Re: Gen 3 Hemi ignition coils

From what I have recently been told ...
Earlier Gen III coils and later Gen III coils are very different.
by Walter R. Malik
Fri Jan 08, 2021 11:10 am
Forum: Engine Tech
Topic: Gen 3 Hemi ignition coils
Replies: 15
Views: 514

Re: Gen 3 Hemi ignition coils

One primary and two secondary (weird idea #-o ). These curves are measured with plug wires (secondaries) connected together. https://lh3.googleusercontent.com/pw/ACtC-3dBnFMnqcLd04b6tEP7PSJcB9s2wN2O0LfVH2l-wdcke5DhDH7JUYNOGfGXryuXW656eH22xGFQOsWfKao45EeRnxjRDlOVv2B8jQnA5j_AtWGit5jqE_1NvzKbSyQVB8mjW...
by Walter R. Malik
Thu Jan 07, 2021 9:46 am
Forum: Engine Tech
Topic: Gen 3 Hemi ignition coils
Replies: 15
Views: 514

Re: Gen 3 Hemi ignition coils

Circlotron wrote: Thu Jan 07, 2021 8:18 am Just wondering about the coils for Gen 3 Hemis. Seeing they connect to two spark plugs, are they internally two individual coils or one double-ended coil like on a wasted spark setup?
One coil, two ends ... positive and negative.
by Walter R. Malik
Mon Jan 04, 2021 8:42 pm
Forum: General Tech
Topic: E85 Carb Conversion
Replies: 7
Views: 193

Re: E85 Carb Conversion

xxdabroxx wrote: Sat Jan 02, 2021 8:48 pm I need to have my 4150 HP 750 converted to run on E85 for my 383 build. I’m torn between sending it to Mark Sullen or Pro Systems for the work. Does anyone have a recommendation either way?
It is easier and probably not much more expensive to buy a new one.
by Walter R. Malik
Mon Jan 04, 2021 8:23 pm
Forum: Engine Tech
Topic: Piston Pin Clips
Replies: 14
Views: 533

Re: Piston Pin Clips

I have a new set of pistons and that came with circular wire clips to hold the piston pins in place. I want to kill the person who came up with this idea. All most impossible to fit them. I have used spiral locks before and thought they were bad. They are a walk in the park compared to these. Is th...