OK is this someone on here?
 

I was searching Ebay and came across these SMI. From Waite Park, MN

http://cgi.ebay.com/ebaymotors/sheet...37304596QQrdZ1


Look home made but might be from a vender.

Re: OK who's making these?
 

im curious as to why there is a honda in the background if its a DSM mani.

Re: OK who's making these?
 

Right there in the add, says THESE ARE MADE BY BULLDOG RACING. They're selling them on Ebay now under a new name it seems like.

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It's probably PIK Fabrications. ?

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I'd guess it would be old "supra dave".
The original 2jz killer.

Re: OK who's making these?
 

Probably that guy up there who had the mid 12 second 2G with a 14B.

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Could be...

Re: OK who's making these?
 

Re: OK who's making these?
 

ooooooo shanes new job is a sleuth!

Re: OK who's making these?
 

Thats Nate at PIK Fabircations in St.Cloud/waite park

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Anyone want to comment on the build quality? Looks pretty decent for the $$.

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That's what I was thinking. The flange that bolts to the head looks a little thin though.

Re: OK who's making these?
 

Anyone running one? Im curious as to how it performs, and where it makes its peak improvements.

Re: OK who's making these?
 

I looked into getting one of these a few weeks ago, was skeptical though because it was on eBay, so I forgot about it.

If they turn out to be good, I'd probably get one since I've been looking for one and not wanting to spend a huge amount of money.

Re: OK who's making these?
 

Looks like a piece of shit to me. There are reasons why manifolds such as the Magnus and JM Fabrications are tapered. I'd hate to see what Pro/E or Cosmos, let alone an actual IC engine manifold design software, would kick out as a simulated fluid flow in that box. When I see a dyno chart proving me wrong compared to what's already on the market, I'll retract my statements.

Re: OK who's making these?
 

I agree with you Jakey. They look like a box with runners and a flange. The "flange" for the throttle body doesnt even really look like a flange. It looks like they took a hole saw to the end then drilled some holes for the t-body bolts.

Maybe I am wrong but it just looks like a way for someone to make some quick cash.

Re: OK who's making these?
 

You won't see any proof, because you are right. It seems no one knows how to make anything right.

Re: OK who's making these?
 

Yes we did make them. They are not the best design on the market. They are worth the money though in my opinion. In testing there was a 37whp gain with a 50 trim- there are other manifolds on the market that would probley do better than this but not a bad gain for the money invested. However, it is now discountinued. We have been working on and now have a better manifold for the money:

http://cgi.ebay.com/ebaymotors/ws/eB...tem=8039260070

If anyone doubts the power potential of our new manifolds I'd be willing to stack it up to the competition. Yes it weighs a little more than others, yes it looks similar to other designs from other manufacturers, yes it makes just as much power, and yes it costs quite a bit less. Also, we are throwing in a free heat barrier intake manifold gasket with purchase (avalible in about a week or so) Hope this answers some questions. The 2g version will be out soon and will be the same price. When I get some time to desgin it there will possibly be a bracket for the ignition pack included as well. Thanks!

Re: OK who's making these?
 

I can see the improvement.

Re: OK who's making these?
 

So I'm seeing two visual differences between your manifold and the Magnus:
-Cost
-Radius of the velocity stack

Am I correct?

Re: OK who's making these?
 

You forgot the flange thickness, but pretty much nailed the rest.

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Making a new manifold that is better than the rest is like trying to re-invent the wheel.

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Not to mention out of a small shop without tons of money for R & D. Looks good Nate. Let me know when you get the 2G version up and working.

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So that justifies, at least from what I'm seeing visually here, the right to copy someone else's design?

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Hey, why R&D your own stuff when you can copy exsisting designs with less production costs? That is the name of the game unfortunally. The manifolds look interesting, good luck with future sales.

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So its coated mild steel? Looks interesting, good luck.

~John

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anyone reccomend getting one of these?

Re: OK who's making these?
 

I see 2 issues right off the bat with these manifold. The first is the flange thickness (which someone already mentioned). I think there would be too much stress on that thin of metal. My Magnus is at least 1/2" thick.

The second problem is the runners. A good design will have tapered runners and velocity stacks. Tapered runners will increase velocity due to the pumping action of the incoming air flow. When i used to port out 2 stroke engines, you always wanted to make sure the intake tranfer ports were larger at the base(crankcase) than at the window in the cylinder to avoid a reverse pumping action.

Here is a link for everyone to enjoy:

http://www.turbonation.com/intake.htm

While these ones on ebay may improve performance, they certainly could be improved.

Re: OK who's making these?
 

I thought the tapered runners were to speed up the air along the walls. The air that's right against the walls gets slowed down due to it hitting the wall, but when the runners taper smaller, that increases the speed of the air, so that all the air molecules move at the same speed. That's what I heard, so it could very well be wrong.

Also, it looks to me that it does have velocity stacks. They aren't as rounded as Magnus's though.

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Velocity stacks aren't required in a FI application, its more benefictial in a NA environment.

Re: OK who's making these?
 

Decreasing the runner size as it gets closer to the intake ports will increase the velocity because of mass continuity. You have the same amount of air coming into the runner so when the cross-sectional area is decreased, velocity increases. The velocity of the air traveling through the runner can be looked at as a ) with the maximum air velocity at the center of the runner. The velocity at the very edge of the plenum is zero and increases in a ) shape towards the middle and then decreases again as you approach the opposite side of the runner.

Re: OK who's making these?
 

Explain please.

Re: OK who's making these?
 

Because he said so, bitch. LOL jk

Re: OK who's making these?
 

yeah, airflow in turbo cars is quite different, velocity stacks are for modded hondas.

personally, I would just go with a cyclone mani. On that note, I wonder if anyone has actual numbers on stock manifolds(ported/unported), cyclone manifolds(is it possible to "port"?), and sheet metal ones...personally I would send the $400 toward something else, like a bigger turbo, or better intercooler.

Re: OK who's making these?
 

Exactly what Jakey said.

Think of it this way too. Blow through a 2" diameter tube, then blow through a 1" diameter tube. Which one will yield you the most velocity? You should get this answer right....

Re: OK who's making these?
 

So, anyone running one yet? Someone needs to go dyno their car, then go slap one of these on, then dyno it again. Let's see some numbers. 37whp was mentioned, but I want to see some real dyno graphs!

Re: OK who's making these?
 

And if it is 37whp, where is that 37 at??? bottem end, midrange or at the top? That's important too.

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With the shorter runners, it should be a top end gain.

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Why would velocity stacks be more beneficial in an NA environment, besides the fact that NA guys are often trying to squeak out every last HP.

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In AMS's actual dyno testing they found more than a small amount of taper ended up hurting the power. They did use some taper though.