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Bench Data

General engine tech -- Drag Racing to Circle Track

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SpeierRacingHeads
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Re: Bench Data

Post by SpeierRacingHeads » Wed Sep 04, 2019 2:36 pm

Elroy wrote:
Wed Sep 04, 2019 2:28 pm
SpeierRacingHeads wrote:
Mon Sep 02, 2019 1:12 pm
String of 500hp and string of 500 torque, peaking at 6200ish

Yes, small solid roller
Walk in the park. 500 tq is more of a challenge than the 500 horsies but neither should be much trouble at all for something with some effort thrown at it. There are out of the box heads that could get that done. I have a suspicion you are intentionally understating your goals because of the TPI///understandable but dynoed with single 4.//solid roller 379 with ported heads and manifold////570 plus or its broken.
It won't make 570 on the dyno I use. The 385, two weeks ago with a 253/260 and true 91 made 547hp. Which on that dyno was 25+ more than other engines of equal size.

BUT, down the street it would have! :)
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Chad Speier
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Elroy
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Re: Bench Data

Post by Elroy » Wed Sep 04, 2019 2:40 pm

SpeierRacingHeads wrote:
Wed Sep 04, 2019 2:36 pm
It won't make 570 on the dyno I use.
They all read low :lol: How often do you ever hear the opposite? :lol:

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Re: Bench Data

Post by SpeierRacingHeads » Wed Sep 04, 2019 3:13 pm

Elroy wrote:
Wed Sep 04, 2019 2:40 pm
SpeierRacingHeads wrote:
Wed Sep 04, 2019 2:36 pm
It won't make 570 on the dyno I use.
They all read low :lol: How often do you ever hear the opposite? :lol:
If it's not low, that engine is a pooch! :)
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Chad Speier
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MELWAY
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Re: Bench Data

Post by MELWAY » Wed Sep 04, 2019 10:31 pm

SpeierRacingHeads wrote:
Sun Sep 01, 2019 1:14 pm
nhrastocker wrote:
Sat Aug 31, 2019 10:55 pm
Chad,

Many of the fast Chevy Super Stock cylinder heads have been ported and epoxied into an oval intake port.
The first Heads-Up, Dave Layer, cylinder heads I took a look at in the early 1980's, had oval port heads and the car was a record holder in its class.
Every Super Stock head that I do is oval and raised. That is why I wanted to try it on this.

However these flow way too much air to be this small and oval, IMO.

Do the 2 ports sound different. Does the faster oval sound smoother

I thought the biggest reason you would epoxy the floor and make oval. Is to help the ST handle the higher air speed and not seperate/ back up

Correct me if I’m wrong
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rdwedge
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Re: Bench Data

Post by rdwedge » Wed Sep 11, 2019 9:37 am

Chad
What 'short turn height' did you end up with?
Thanks
Mike

SpeierRacingHeads
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Re: Bench Data

Post by SpeierRacingHeads » Wed Sep 11, 2019 10:21 am

rdwedge wrote:
Wed Sep 11, 2019 9:37 am
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Around 1.000
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Re: Bench Data

Post by 77cruiser » Wed Sep 11, 2019 11:08 am

SpeierRacingHeads wrote:
Mon Sep 02, 2019 1:11 pm
econo racer wrote:
Mon Sep 02, 2019 5:43 am
Chad have you made a pass at the drag strip yet? Something to get a baseline from?
It's a street car, I would never race it.
Why not bragging rights or just some personal satisfaction?
I would, just a couple passes.
Jim

rdwedge
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Re: Bench Data

Post by rdwedge » Wed Sep 11, 2019 12:33 pm

rdwedge wrote: ↑
Wed Sep 11, 2019 9:37 am
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Around 1.000
Is that the same height as all your profiler 23 degree heads ?

SpeierRacingHeads
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Re: Bench Data

Post by SpeierRacingHeads » Thu Sep 12, 2019 10:07 am

77cruiser wrote:
Wed Sep 11, 2019 11:08 am
SpeierRacingHeads wrote:
Mon Sep 02, 2019 1:11 pm
econo racer wrote:
Mon Sep 02, 2019 5:43 am
Chad have you made a pass at the drag strip yet? Something to get a baseline from?
It's a street car, I would never race it.
Why not bragging rights or just some personal satisfaction?
I would, just a couple passes.
It's possible, but I haven't even thought about it.
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Chad Speier
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Re: Bench Data

Post by SpeierRacingHeads » Thu Sep 12, 2019 10:09 am

rdwedge wrote:
Wed Sep 11, 2019 12:33 pm
rdwedge wrote: ↑
Wed Sep 11, 2019 9:37 am
Chad
What 'short turn height' did you end up with?
Thanks
Mike
Around 1.000
Is that the same height as all your profiler 23 degree heads ?
No, I have one at .930 and none are over 1.050. I have a few that are canted as well.
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Chad Speier
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Re: Bench Data

Post by SpeierRacingHeads » Thu Sep 12, 2019 10:11 am

I did decide to use a set of my 205cc CNC heads, and this manifold. Going to build a plenum box and use my billet TPiS 58mm.

Image
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Chad Speier
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Re: Bench Data

Post by Carnut1 » Fri Sep 13, 2019 10:43 am

[/attachment]
tpi elbow.jpg
I am guessing something along these lines? I have never flowed anything like this. I know there are manufactured elbows with turning veins to help even the flow through the turn. I can see it working well on a boosted application but may have uneven flow on na. I am interested in what you come up with.
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SpeierRacingHeads
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Re: Bench Data

Post by SpeierRacingHeads » Fri Sep 13, 2019 1:17 pm

I'm going to have something like this made. And an idea of the manifold.

Image

Image
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Re: Bench Data

Post by SpeierRacingHeads » Mon Sep 16, 2019 11:25 am

Image
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Re: Bench Data

Post by Carnut1 » Mon Sep 16, 2019 11:32 am

Flow each runner and see what the difference is on the front runners.
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