Time to go Stage II!

[Alky V6]

The T&D will take any thing you can throw at them. We have used them for years with very high spring PSI and never had A problem.

I figured the same thing. The shafts being so large with the T&D, and the fact that they're solid 8620 material, and the amount of roller bearing contact would have to be a plus. Larger shafts and larger diameter roller bearing assemblies will always equal more load bearing capacity. That's exactly why people tend to go with larger body diameters with lifters. Larger pins, needle bearings and rollers can be fitted for better load bearing.

 

[Alky V6]

First thing to check. How well does the intake manifold runner align with the intake port of the head? I'm looking for a smooth transition with no small turns at the intake manifold mounting surface.

 

[norbs]

What about needle bearing roller tip wheels, TD makes them..

 

[Dusty Bradford]

What about needle bearing roller tip wheels, TD makes them..

I had the standard tip on my t&d but i had to upgrade to the roller tip. I found the tip to be hard to rotate during lash adjustments so the needle bearing was a requirement. Spring pressures are over 400 seat and near 1000 at lift.

 

[Alky V6]

I had the standard tip on my t&d but i had to upgrade to the roller tip. I found the tip to be hard to rotate during lash adjustments so the needle bearing was a requirement. Spring pressures are over 400 seat and near 1000 at lift.

What valve material are you running, Dusty?

 

[Dusty Bradford]

What valve material are you running, Dusty?

Ti intake and Inconel exhaust

 

[Alky V6]

The intake runner is not a straight shot to the port in the head. The intake runner is lying more horizontal by 6 degrees.
I may be able to correct that somewhat by angle milling the gasket surfaces on the intake flanges. The bolt hole and bolt head seating surface angles will then have to be corrected.

 

[Squid4life]

The intake runner is not a straight shot to the port in the head. The intake runner is lying more horizontal by 6 degrees.
I may be able to correct that somewhat by angle milling the gasket surfaces on the intake flanges. The bolt hole and bolt head seating surface angles will then have to be corrected.

Is 6* going to make a difference, or is it personal preference? Didn't know if the sim took into account things like that. Going to be an interesting project for sure. Like that intake. I saw one on ebay a while back and considered it, but I have no need for anything that extravagant. Other than intake and heads, and obviously headers, are there any other big changes going down on this build? Got a header design in mind?

PS, will hit you up via PM to see about getting the trans checked (if I get the time to pull it...) and could pick up the deck lid if you want to get it out of the way. Need some more alky for the 85 too.

 

[Alky V6]

Is 6* going to make a difference, or is it personal preference? Didn't know if the sim took into account things like that. Going to be an interesting project for sure. Like that intake. I saw one on ebay a while back and considered it, but I have no need for anything that extravagant. Other than intake and heads, and obviously headers, are there any other big changes going down on this build? Got a header design in mind?

PS, will hit you up via PM to see about getting the trans checked (if I get the time to pull it...) and could pick up the deck lid if you want to get it out of the way. Need some more alky for the 85 too.

Straightening out the runners may not make a big enough difference to be worth it for most to pursue, but I choose to optimize the simple things that I'm able to.
I do have the header specs worked out. Not the layout, though. I'll concentrate on that when that time comes.
The engine specs will follow much of the Stage I configuration, except that I'll be trying something different with the camshaft specs and the use of the nitrous. Below is the latest work on the camshaft specs. Flat torque curve from 5500 to 8500 rpm, while staying under my BMEP limit.
That's about 42 psi boost by 9500 rpm. If this works out, we're looking at 7.14 hp/cid.

 

[Squid4life]

Yeah, you are right. If you have the means, the ability and the time, you might as well. Very interesting for sure. Going to be a beast for sure.

 

[Alky V6]

Do you think it's time to start planning the back halving of the car?
Nahhh! Let's burn up these 10.5s first.

 

[Alky V6]

Here's an interesting comparison. I worked some of the parameters to get the spoolup to more closely resemble what I expect to see 'real world'.
This is a comparison between the past performance of the Stage I setup and the power curve I hope to see with the Stage II setup.
Would be nice if I could take this new engine out to 10,000.

 

[Alky V6]

With the old engine, launching the car at 5,400-6,000 rpm, you can see that the torque curve went on a down slope right after the initial launch. With the new engine, after the initial launch, I'll be seeing an increase in torque where it will plateau all the way to 8,500 rpm. I'll be into second gear way before that point.

 

[Alky V6]

To angle mill the intake flanges enough to get the 6 degree change in the runner would leave the upper edge of the flange too thin to gone.
I got ahold of some chunks of aluminum and I'm going to start whittling away at them to create the flanges for the new intake.

 

[Squid4life]

To angle mill the intake flanges enough to get the 6 degree change in the runner would leave the upper edge of the flange too thin to gone.
I got ahold of some chunks of aluminum and I'm going to start whittling away at them to create the flanges for the new intake.

So, basically what you are saying is that you will probably end up using none of the original intake?

And, for the record, I would love to see the car stay small tire. Maybe try some drag radials for the next set of tires. That would be interesting...

9,500 - 10k? Yikes... What RPM have most of the fastest SII V6 guys turned normally? Seems like you are definitely going to push the RPM envelope with this motor!

 

[Alky V6]

So, basically what you are saying is that you will probably end up using none of the original intake?

And, for the record, I would love to see the car stay small tire. Maybe try some drag radials for the next set of tires. That would be interesting...

9,500 - 10k? Yikes... What RPM have most of the fastest SII V6 guys turned normally? Seems like you are definitely going to push the RPM envelope with this motor!

That's right. The only thing I'll be using off of the Stage I intake will be the 100mm throttle body.

Dave Crower at Crower Cams is helping me with the cam. He would like to see me spin the engine to the limit of what the current technology will allow. We're going to use the bushed lifters and pushrods that will measure 7/16" diameter in the middle, but 5/16" at the ends. He doesn't believe I'll need a rev kit. He feels todays springs will be able to do the job.

 

[Squid4life]

Very cool, very interesting. The intake pictured is not the stage I intake, right? I meant that tunnel ram will get whittled to nothing, and replaced with blocks of home-machined goodness.

 

[Alky V6]

Very cool, very interesting. The intake pictured is not the stage I intake, right? I meant that tunnel ram will get whittled to nothing, and replaced with blocks of home-machined goodness.

You're right. At this point, I'm not sure if I will be using anything off of it. Possibly only part of the runners. If I do use the runners, they'll get polished up to match the rest of the intake.

 

[Mike E]

If you want, tell me how long and what taper you want and I can bend you some two piece runners out of .090 and maybe 1/8" on my sheetmetal brake. I can do radius corners with different radii on each end of the runner also.

 

[Squid4life]

If you want, tell me how long and what taper you want and I can bend you some two piece runners out of .090 and maybe 1/8" on my sheetmetal brake.

Ooooooohhhhh.... fab porn.... You wear that brake out yet Mike? That is one piece of equipment on my list for sure!