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Search found 4761 matches

by Walter R. Malik
Mon Oct 18, 2021 11:31 am
Forum: Engine Tech
Topic: Stacking Head Gaskets?
Replies: 8
Views: 2919

Re: Stacking Head Gaskets?

Is it ok to stack steel shim head gaskets like the FelPro 1094? I need a compressed thickness of .033-.035 this looks like my best bet by stacking two gaskets together. Or does anyone now where I could get a gasket for a 4.00 bore small chevy in a 4.135 X .033-.035? I have already tried Cometic. Ce...
by Walter R. Malik
Mon Oct 18, 2021 11:22 am
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 1547

Re: Guys who CNC port

If you were.. say Brodix and a company like AFR came out with a BBC head that just stomped on every version you offer... are you telling me you wouldn't get your hands on one to see if they figured out a port and combustion chamber shape that is next level? And how could you not "incorporate" that ...
by Walter R. Malik
Sun Oct 17, 2021 11:25 am
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 1547

Re: Guys who CNC port

BradH wrote: Sat Oct 16, 2021 8:53 pm Are you saying we should shift into a discussion of ethics, instead? :shock: / :lol:
Ethics in business today is a rare commodity ... greed is what drives most.
by Walter R. Malik
Sat Oct 16, 2021 7:38 pm
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 1547

Re: Guys who CNC port

It sounds like this discussion could / should go off on an Intellectual Property tangent wrt the question of what can be considered patentable or protected under some other type of ownership definition. Here is a little true story. Everyone knows PPG, (Pittsburgh Paint & Glass). Bill Davidson of Gu...
by Walter R. Malik
Fri Oct 15, 2021 7:42 pm
Forum: Vintage/Classic/Historical Engine Tech
Topic: Gapp & Roush drag Holley
Replies: 12
Views: 1495

Re: Gapp & Roush drag Holley

The holes in the side of the venturi were put there to introduce a blast of air going over the throttle shaft to keep gasoline from leaking out through the shaft. Almost any brand carburetor had something like that before 1972 when the EPA started measuring engine compartment hydrocarbons. Any air l...
by Walter R. Malik
Fri Oct 15, 2021 7:31 pm
Forum: Engine Tech
Topic: Dyno Racing
Replies: 11
Views: 906

Re: Dyno Racing

Why not start a competition here on Speed Talk. Make up some general rules that would cover a majority of engines shops are building for their customers and when they dyno they can post combination specs and results. I know it would not be a level playing field due to different dynos, policing, con...
by Walter R. Malik
Fri Oct 15, 2021 7:22 pm
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 1547

Re: Guys who CNC port

Thanks for the feedback. Sorry for the noob questions but these CNC porting machines are 200-300K, I understand it's profitable for the large companies mass producing heads but for the smaller shops is there enough porting work to warrant buying one of these machines? Are these machines also used f...
by Walter R. Malik
Fri Oct 15, 2021 11:49 am
Forum: Engine Tech
Topic: What distributor gear are you guys using for billet cams?
Replies: 18
Views: 1314

Re: What distributor gear are you guys using for billet cams?

"Melonized" is a trade name for a shot-peened, ductile iron gear which has been Nitrided. It's actually the name of the heat treating process, not the material. "Melonized" is a form of salt bath Nitriding, and can be used on Steel or Ductile Iron gears. We run them against the 8620 gears we press ...
by Walter R. Malik
Thu Oct 14, 2021 12:17 pm
Forum: Engine Tech
Topic: What distributor gear are you guys using for billet cams?
Replies: 18
Views: 1314

Re: What distributor gear are you guys using for billet cams?

"Melonized" is a trade name for a shot-peened, ductile iron gear which has been Nitrided.

Some other manufacturers have them under a different name.
by Walter R. Malik
Wed Oct 13, 2021 11:07 pm
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 1547

Re: Guys who CNC port

998gp wrote: Wed Oct 13, 2021 2:58 pm Hi,

The guys who offer CNC porting or CNC port designs, do you actually have 5 axis CNC machines or do you out source to another shop who has the equipment? If so, how do you protect your design? Do you have NDA's?

Thanks.
BOTH ... they probably sell their own designs.
by Walter R. Malik
Wed Oct 13, 2021 11:35 am
Forum: Engine Tech
Topic: Dyno Racing
Replies: 11
Views: 906

Re: Dyno Racing

Will we ever see dyno racing again in the USA. Looks like Race Engine Challenge and Masters Of Motors have nothing planned. I always learned some looking at all the combinations and seeing realistic numbers that most likely have correct dyno correction factors. Different "States of the Union" have ...
by Walter R. Malik
Wed Oct 13, 2021 11:03 am
Forum: Engine Tech
Topic: Lobe Intensity vs Durability
Replies: 45
Views: 1924

Re: Lobe Intensity vs Durability

From my spintron experience ( we own 2 ) the problem is EVERYTHING affects everything in a dynamic state. Sim's can help with understanding but real world most always shows unwanted compliance or deflection that was never figured into a sim program. The results very AND are always changing with rpm...
by Walter R. Malik
Tue Oct 12, 2021 8:31 pm
Forum: Engine Tech
Topic: Strange SBF problem ...
Replies: 12
Views: 908

Re: Strange SBF problem ...

I have a strange SBF engine problem I would like to run past you guys, its a long story ... will touch on the highlights to keep it short. The engine started out as an owner freshened road course 302W, very basic build 165cc AFR heads, custom solid flat cam, headers,intake, carb etc. It was deliver...
by Walter R. Malik
Tue Oct 12, 2021 8:20 pm
Forum: Engine Tech
Topic: Dyno Racing
Replies: 11
Views: 906

Re: Dyno Racing

Will we ever see dyno racing again in the USA. Looks like Race Engine Challenge and Masters Of Motors have nothing planned. I always learned some looking at all the combinations and seeing realistic numbers that most likely have correct dyno correction factors. Different "States of the Union" have ...
by Walter R. Malik
Mon Oct 11, 2021 12:38 am
Forum: Engine Tech
Topic: What distributor gear are you guys using for billet cams?
Replies: 18
Views: 1314

Re: What distributor gear are you guys using for billet cams?

Bwh998 wrote: Sun Oct 10, 2021 12:47 pm I ordered a Jones cam that I assume is billet, not sure which distributor gear to go with.
Ask Mike, I am sure he will tell you what you should use with his camshaft..
I use a composite gear if there is one available.