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Search found 1891 matches

by modok
Sun Oct 13, 2019 12:53 am
Forum: Engine Tech
Topic: flywheel to balancer weight proportion- inline 6
Replies: 48
Views: 1573

Re: flywheel to balancer weight proportion- inline 6

The more I hear about the fluid filled type dampners, the less I want to use one on this particular engine. Why? Please post links or explain. I am not arguing, just want to learn. As I've said before, I'm running a modified SBC streetdampr on my inline six. If that is a bad choice I want to know w...
by modok
Sat Oct 12, 2019 8:35 pm
Forum: Engine Tech
Topic: Pushrod OD sleeves?
Replies: 2
Views: 256

Re: Pushrod OD sleeves?

I had the same idea....like steel sleeved aluminum pushrods, could work killer.

Most apps the OD is restricted by having to fit between the ports, so, can't do it. But, some engines the pushrods have lots of room and it could work.
by modok
Wed Oct 09, 2019 12:20 am
Forum: Engine Tech
Topic: Artificial Intelligence to Design Lightweight Parts
Replies: 31
Views: 1139

Re: Artificial Intelligence to Design Lightweight Parts

Must have been one of the fixed constraints.
by modok
Wed Oct 09, 2019 12:01 am
Forum: Engine Tech
Topic: Artificial Intelligence to Design Lightweight Parts
Replies: 31
Views: 1139

Re: Artificial Intelligence to Design Lightweight Parts

That's really neat example. Only smart as the guy using it tho. A real rocker you might want to design for rigidity and minimal momentum, rather than for equal stress distribution. Weight can be saved in other areas, perhaps a hollow shaft. Dampening vibration is also a consideration. Just giving yo...
by modok
Mon Oct 07, 2019 2:13 am
Forum: Engine Tech
Topic: Note on Weber carbs by Mr. Passini
Replies: 27
Views: 951

Re: Note on Weber carbs by Mr. Passini

Brilliant!
by modok
Mon Oct 07, 2019 1:57 am
Forum: Engine Tech
Topic: Note on Weber carbs by Mr. Passini
Replies: 27
Views: 951

Re: Note on Weber carbs by Mr. Passini

Put the WOT stop in the linkage, and don't assume they will make the peak power at 90 degrees open, because.....a lot of times they don't anyway, often a bit more or less is better, or makes no difference. Synch is most important around 1/4 open
by modok
Sun Oct 06, 2019 8:29 pm
Forum: Engine Tech
Topic: Note on Weber carbs by Mr. Passini
Replies: 27
Views: 951

Re: Note on Weber carbs by Mr. Passini

I think it has to do with how much you shake the carburetors, and also what direction you shake them. Along the axis of the flat pivot should be least sensitive, because that won't upset the needle, and the fuel is in narrow gap that way, usually. 90 degrees to it, then the fuel can more easily surg...
by modok
Sat Oct 05, 2019 8:14 pm
Forum: Engine Tech
Topic: Note on Weber carbs by Mr. Passini
Replies: 27
Views: 951

Re: Note on Weber carbs by Mr. Passini

Right on! There are a lot of instructions and discussions about synchronizing idle, but it's just NOT very important. It's really COOL to have the idle set low and perfectly smooth......but It's the least important thing to tune. Lowest priority. You will never damage the engine from idling uneven, ...
by modok
Wed Oct 02, 2019 4:57 am
Forum: Engine Tech
Topic: Iron Block dip with bronze lifter sleeves ,, remove or ?
Replies: 5
Views: 334

Re: Iron Block dip with bronze lifter sleeves ,, remove or ?

There is no need to remove bronze bearings to clean in caustic tank.

Aluminum, magnesium, babbitt, parts need to be removed.

but bronze and copper are fine.

Many engines have bronze cam bearings and pin bushings, it's done all the time.
by modok
Tue Oct 01, 2019 7:35 pm
Forum: Engine Tech
Topic: 20th century manifold reconfigured for 21st century
Replies: 24
Views: 1212

Re: 20th century manifold reconfigured for 21st century

don't want to weld it?

fair enough

ok braze it. :P
by modok
Mon Sep 30, 2019 8:08 pm
Forum: Engine Tech
Topic: Note on Weber carbs by Mr. Passini
Replies: 27
Views: 951

Re: Note on Weber carbs by Mr. Passini

If the moxture was set for highest idle, Opening the bypass screw would lean the mixture.

I don't know what the idea is.
by modok
Sun Sep 29, 2019 7:35 pm
Forum: Engine Tech
Topic: 20th century manifold reconfigured for 21st century
Replies: 24
Views: 1212

Re: 20th century manifold reconfigured for 21st century

Splitting the manifold will always work better, no doubt. When does it not? never only time it does not is if the tuning is way off. You will need to try a few different diameters and lengths of downpipe to see what it likes best. or, whatever you want to call them, they don't go down.....but IMO th...
by modok
Fri Sep 27, 2019 2:37 pm
Forum: Engine Tech
Topic: Pennzoil 20w50 Racing Oil
Replies: 17
Views: 1517

Re: Pennzoil 20w50 Racing Oil

I don't think they are more common.
by modok
Thu Sep 26, 2019 8:13 pm
Forum: Engine Tech
Topic: Pennzoil 20w50 Racing Oil
Replies: 17
Views: 1517

Re: Pennzoil 20w50 Racing Oil

Good question......yes and no The zinc content does matter, but it's not so much the sheer amount as what type, and what other additives are in there, How long it's supposed to last. All the stuff in the auto parts stores is aimed to last a LONG time between change intervals, and the additive packs ...
by modok
Sun Sep 22, 2019 6:24 pm
Forum: Engine Tech
Topic: Sizing IR Carbs
Replies: 19
Views: 739

Re: Sizing IR Carbs

Appreciate the quality feedback chaps, thanks. I have Pipemax, perhaps someone can walk me through sizing carbs by way of that, as Modok suggests? Sorry it's not as fresh in my mind as it was a few years ago, but if you can get pipe max data tuned in, whatever it says for MIN port area, 1.3 times t...