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Search: Posts Made By: DavidBoren
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06-28-2019, 02:05 PM
Replies: 74
Views: 5,909
Posted By DavidBoren

If internal combustion engines are to survive and...

If internal combustion engines are to survive and advance, I imagine that the valves will be computer controlled/timed solenoids.

I love camshaft theory and I will always love cam-in-block...
06-21-2019, 06:42 PM
Replies: 12
Views: 1,279
Posted By DavidBoren

I'm no expert on piston design, but I do like the...

I'm no expert on piston design, but I do like the asymmetrical piston designs available these days. And things like vacuum pumps, thinner ring packages, and coated skirts. Combustion chamber molds,...
06-21-2019, 01:06 PM
Replies: 12
Views: 1,279
Posted By DavidBoren

It's just the lowest I am willing to go,...

It's just the lowest I am willing to go, personally. Arbitrarily set based on shit I have read. And it's the golden ratio, which is fun, but completely unrelated. I like rod ratios in the 1.73+...
06-20-2019, 06:47 PM
Replies: 12
Views: 1,279
Posted By DavidBoren

I have absolutely no interest or intention to...

I have absolutely no interest or intention to ever build anything big enough to ever warrant a tall deck block. I have used the 1.6 rod ratio limit to determine that a 3.9" stoke, 6.25" rod, 1.040"...
06-20-2019, 04:46 PM
Replies: 12
Views: 1,279
Posted By DavidBoren

From my understanding, the lower rod ratios...

From my understanding, the lower rod ratios actually allow more ignition timing advance than higher rod ratios, due to how fast the piston accelerates away from TDC. The lower rod ratios are said to...
06-19-2019, 09:01 PM
Replies: 33
Views: 2,668
Posted By DavidBoren

Damn. Sweet ponycar.

Damn. Sweet ponycar.
06-19-2019, 07:52 PM
Replies: 7
Views: 638
Posted By DavidBoren

Your heads will be fine for now. And I...

Your heads will be fine for now.

And I always recommend that you measure for correct pushrod length, but there are plenty of cam kits out there that come with springs and pushrods. They are...
06-19-2019, 05:05 PM
Replies: 7
Views: 638
Posted By DavidBoren

Welcome to Tech. You already have the LS6...

Welcome to Tech.

You already have the LS6 intake and headers, all you need is a cam/springs/pushrods kit and you are set.

Something simple, like a Triple12 or 224r .600/.600 would be lots of...
06-19-2019, 04:52 PM
Replies: 12
Views: 1,279
Posted By DavidBoren

Rod ratio and valve events...

What changes to the camshaft are necessary for different rod ratios?

Rod ratio dictates piston dwell at TDC, and the speed at which the piston moves away from TDC/how fast pressure drops in the...
06-19-2019, 07:37 AM
Replies: 2
Views: 880
Posted By DavidBoren

Welcome! You can do a lot with the little...

Welcome!

You can do a lot with the little 5.3 if you do go that route. And it might be easier to find a GenIV 5.3 than a decent LS1 at this point. Either way, if you keep with an aluminum block,...
06-18-2019, 04:38 PM
Replies: 8
Views: 848
Posted By DavidBoren

Nice.

Nice.
06-18-2019, 01:44 PM
Replies: 5
Views: 1,883
Posted By DavidBoren

I know it's always better to let the cam do the...

I know it's always better to let the cam do the work, not the rockers, but I didn't realize it was that detrimental to up the rocker ratio.

I was even thinking that you could increase the...
06-18-2019, 09:07 AM
Replies: 5
Views: 1,883
Posted By DavidBoren

I've seen the specs listed as 198/209 .500/.501...

I've seen the specs listed as 198/209 .500/.501 before, too. Either way it's an improvement over the 4.8/5.3 cam, and I would honestly be surprised if nobody has tried it in the smaller engines. It...
06-17-2019, 09:51 PM
Replies: 5
Views: 1,883
Posted By DavidBoren

Anyone ever use the LY6 VVT cam in a 4.8/5.3?

I was wondering if anyone has bothered using the cam out of the LY6/L96/L92 and put it one of the smaller VVT motors (L20, LH9, LMF).

I know it's designed for rectangle port heads and has 12* of...
06-17-2019, 08:16 PM
Replies: 82
Views: 9,206
Posted By DavidBoren

Wow. Nice. It has a hood now? What did you...

Wow. Nice.

It has a hood now? What did you end up doing with the exhaust?
06-17-2019, 03:03 PM
Replies: 3
Views: 1,161
Posted By DavidBoren

Do you want ported stock castings or completely...

Do you want ported stock castings or completely new heads?

There is a plethora of decent porters that you can send your stock castings to.

The TFS 220 Fast as Cast or the MMS223 Sportsman...
06-17-2019, 09:26 AM
Replies: 241
Views: 14,643
Posted By DavidBoren

Shainiac, that is a slick setup. To...

Shainiac, that is a slick setup.

To everyone who is arguing about naturally aspirated engines... the OP specifically asked for advice on twin turbos.
06-16-2019, 10:10 PM
Replies: 11
Views: 505
Posted By DavidBoren

Flush your coolant. And when you refill it, put...

Flush your coolant. And when you refill it, put your car on ramps, turn it on, make sure you have no bubbles in your coolant before you top it off/ cap it.

It's a really cheap and easy way to...
06-15-2019, 02:59 AM
Replies: 706
Views: 44,828
Posted By DavidBoren

It's not, at all... It's been a long day for...

It's not, at all...

It's been a long day for Smokey, just some more names and stuff.

Let it pass...
06-14-2019, 03:49 PM
Replies: 706
Views: 44,828
Posted By DavidBoren

I appreciate it. I would always rather stand...

I appreciate it. I would always rather stand corrected, rather than continue to wander lost. I definitely don't want to be spreading misinformation.
06-14-2019, 03:30 PM
Replies: 706
Views: 44,828
Posted By DavidBoren

Chevelle, It was derived from the Wallace...

Chevelle,

It was derived from the Wallace Racing Discharge Coefficient Calculator. Unlike the other calculators on that site, it was poorly labeled, and I assumed the area mentioned was curtain...
06-14-2019, 01:49 PM
Replies: 18
Views: 2,171
Posted By DavidBoren

Totally F'ing boss!

Totally F'ing boss!
06-14-2019, 01:17 PM
Replies: 706
Views: 44,828
Posted By DavidBoren

I think it's great that offset dowel pins exist...

I think it's great that offset dowel pins exist and work. Anything that opens up new options has potential to open up new ideas and provide the community with new knowledge.

I personally will...
06-14-2019, 10:17 AM
Replies: 706
Views: 44,828
Posted By DavidBoren

I think the backside valve design, undercut...

I think the backside valve design, undercut stems, and the seat/throat/bowl blend have more to do with swirl than curtain area.

The curtain area is the umbrella of air that cascades off the open...
06-14-2019, 08:08 AM
Replies: 706
Views: 44,828
Posted By DavidBoren

KCS, if you have "X" flow at "Y" lift, it gives...

KCS, if you have "X" flow at "Y" lift, it gives you "Z" curtain area.

That curtain area has a diameter, and if the cylinder wall is closer to the valve than the radius of your curtain area, it...
Showing results 1 to 25 of 489
 


 
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