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Search found 572 matches

by rebelrouser
Sun Oct 24, 2021 5:15 pm
Forum: Engine Tech
Topic: How far in do you drive the rear cam tunnel plug? And does it effect cam location?
Replies: 5
Views: 149

Re: How far in do you drive the rear cam tunnel plug? And does it effect cam location?

not sure what kind of engine you have, most I drive in flush if it is a cup type plug, I usually put a little hardening permatex on them. Some engines have a flat curved plug, it has a shoulder and you simply flatten out the plug with a punch to lock it in place, it will be below the surface usually...
by rebelrouser
Sat Oct 23, 2021 8:23 am
Forum: Engine Tech
Topic: Ported vs manifold vacuum for ignition advance?
Replies: 17
Views: 635

Re: Ported vs manifold vacuum for ignition advance?

As most have said it just depends. What is right is an advance curve that the engine likes. To my knowledge most stock older engines from the factory used ported vacuum. With a big cam however manifold vacuum may make them idle a little better. I think the issue is on stock engines, when you use ful...
by rebelrouser
Wed Oct 20, 2021 9:17 am
Forum: Engine Tech
Topic: Project SF-110 upgrade
Replies: 8
Views: 412

Re: Project SF-110 upgrade

Just curious, why even mess with old tube style manometers? Why not just go digital and forget it? I have only had homemade flowbenches, this is my last upgrade, 8 vacuum motors, variable motor control, and digital manometer. so far very happy with it. I think I got an air leak that I have to track ...
by rebelrouser
Tue Oct 19, 2021 9:26 pm
Forum: Engine Tech
Topic: Reuse of Rings and Bearings When Deglazing Cylinders
Replies: 14
Views: 655

Re: Reuse of Rings and Bearings When Deglazing Cylinders

I have a "deglazer", which is a stone hone with the three blades. Believe medium grit. Is a ball hone a better tool for this job? Yes, throw the three stone thing in the trash. Back when I was a young lad working in a Chevy dealership, we had a rash of new 400 SBC's that used oil. The Zone Rep, had...
by rebelrouser
Mon Oct 18, 2021 8:34 pm
Forum: Engine Tech
Topic: Vacuum rule carb sizing
Replies: 18
Views: 595

Re: Vacuum rule carb sizing

It was a Summit LS Ghost cam https://www.summitracing.com/parts/sum-8715-1 And like I said I had wanted a little bigger grind, and they were talking about October or November delivery, so the owner just said to pull the trigger on what was in stock. I think it would have made about 15 more HP They d...
by rebelrouser
Mon Oct 18, 2021 5:05 pm
Forum: Engine Tech
Topic: Vacuum rule carb sizing
Replies: 18
Views: 595

Re: Vacuum rule carb sizing

I just built a 408 LS engine based on a 6.0 for a pulling truck class with the same requirement. With cams in short supply we could not get the one I really wanted without a long wait so I got one just a tad smaller than I wanted .6 lift 222 on intake and .575lift 234 on the exhaust 115 centerline i...
by rebelrouser
Mon Oct 18, 2021 9:47 am
Forum: Engine Tech
Topic: 440 Mopar combustion chamber??
Replies: 6
Views: 415

Re: 440 Mopar combustion chamber??

Would doubt that very much. Since it is a casting, & not machined, how can accuracy of material removed be guaranteed? My experience is that you are correct. Several years ago I built an engine with some KB pistons that had a pad on them to provide a Quench to the BBM mopar open chamber heads. The ...
by rebelrouser
Fri Oct 15, 2021 9:09 pm
Forum: Engine Tech
Topic: hypereutectic piston questions
Replies: 7
Views: 670

Re: hypereutectic piston questions

I see a lot of older cast pistons being replaced by Hypereutectic style pistons as replacement when you order stock pistons for an overhaul. I built a 400 small block in a 1977 3/4 ton chevy 4 door that I pulled my race car trailer with for about 10 years. Used kieth black hyper pistons in it, and n...
by rebelrouser
Thu Oct 14, 2021 10:27 pm
Forum: Electric & Hybrid Vehicle ** NEW **
Topic: Tesla Model S Plaid 9.24
Replies: 1
Views: 458

Re: Tesla Model S Plaid 9.24

https://www.dragzine.com/news/can-a-tes ... race-week/

9.09 and he towed a generator to keep charged! Who says electric cars will kill drag racing?
by rebelrouser
Thu Oct 14, 2021 5:58 pm
Forum: Engine Tech
Topic: Guys who CNC port
Replies: 21
Views: 1507

Re: Guys who CNC port

great read on early drag racing, thanks for posting
by rebelrouser
Wed Oct 13, 2021 11:10 am
Forum: Engine Tech
Topic: Reverse Acceleration on Engine Dyno
Replies: 5
Views: 656

Re: Reverse Acceleration on Engine Dyno

The guy who I purchased some of the components to build my dyno, started the pull at max rpm and then loaded down to where he wanted to end it. Seemed weird to me, and after some reading, the inertia of the rotating assembly would give a slightly better HP and torque number. Lot of the old guys did ...
by rebelrouser
Mon Oct 11, 2021 4:49 pm
Forum: Engine Tech
Topic: Let's play "Guess what's wrong"
Replies: 16
Views: 1147

Re: Let's play "Guess what's wrong"

I vote for a twisted oil pump drive shaft or broken pin in the distributor gear as well, seen that happen many times over the years on a Ford. The drive shaft is just too small, in my opinion . Stock ones used to do it from pieces of valve stem seals getting in the pump gears, any small piece of deb...
by rebelrouser
Mon Oct 11, 2021 9:05 am
Forum: Engine Tech
Topic: What distributor gear are you guys using for billet cams?
Replies: 18
Views: 1306

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

You Chevy guys have all the neat stuff. For a Mopar the only thing available that I know of is a bronze gear.
by rebelrouser
Fri Oct 08, 2021 10:10 pm
Forum: Engine Tech
Topic: AFR "curve" - flat or trending lean after tq peak?
Replies: 12
Views: 671

Re: AFR "curve" - flat or trending lean after tq peak?

Just to throw it out there, has anybody played with using a 5 gas analyzer to tune an engine?
by rebelrouser
Fri Oct 08, 2021 9:57 pm
Forum: Engine Tech
Topic: All out performance bbc
Replies: 50
Views: 2004

Re: All out performance bbc

I have a friendly rivalry with a couple guys at the track. One of them I have been present when they have dynoed a couple of his engines. I know he is making 75hp to 100hp more than me, and he has yet to outrun me heads up. All those little things add up to make your car the most efficient at using ...