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-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   1.6 ETD vs BEGI vs custom (https://www.miataturbo.net/diy-turbo-discussion-14/1-6-etd-vs-begi-vs-custom-42833/)

TurboTim 01-18-2010 12:12 PM


Originally Posted by levnubhin (Post 509678)
How do you guys think this will perform against the FM/Begi cast mani's that a lot of us run?

A lot better.

levnubhin 01-18-2010 12:14 PM


Originally Posted by TurboTim (Post 509692)
A lot better.


I'll assume that means it will perform better everywhere.
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ARTech 01-18-2010 12:14 PM

^ do you already have numbers of your current setup? and is wayne building you the one in the pic above or one like his?

johnmatt 01-18-2010 12:16 PM

No previous numbers. It was a very very halfassed setup from the previous owner with alot of BS parts. He's building one like posted above

TurboTim 01-18-2010 12:36 PM


Originally Posted by levnubhin (Post 509695)
I'll assume that means it will perform better everywhere.

I will guess that it will perform better everywhere.

ARTech 01-18-2010 01:57 PM

How are you going to compare them then? Logs of spool at least?

He's going to have fun with that one, it's a bit harder than the one he made for himself. He'll spend as much time getting things fitted as a ramhorn/absurdflow.

I think it'll make more power than begi/fm, but I'd like to see how much. Lets say a ramhorn makes 40-50 more hp in a 300hp setup over a standard log like the taco taco (from h-t thread). A begi directed pulse log already flows better than a taco taco, so then where does the tubular shorty fall in?

levnubhin 01-18-2010 02:07 PM


Originally Posted by ARTech (Post 509751)
How are you going to compare them then? Logs of spool at least?

He's going to have fun with that one, it's a bit harder than the one he made for himself. He'll spend as much time getting things fitted as a ramhorn/absurdflow.

I think it'll make more power than begi/fm, but I'd like to see how much. Lets say a ramhorn makes 40-50 more hp in a 300hp setup over a standard log like the taco taco (from h-t thread). A begi directed pulse log already flows better than a taco taco, so then where does the tubular shorty fall in?


Well, I've got an OOOOOOLD Begi mani, I don't think it's direct pulses. If I get one of those mani's I will do before and after 4th gear pulls and I'll take it to the same dyno that I just went to.
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TurboTim 01-18-2010 02:15 PM


Originally Posted by ARTech (Post 509751)
He's going to have fun with that one, it's a bit harder than the one he made for himself. He'll spend as much time getting things fitted as a ramhorn/absurdflow.

I haven't made this one yet because it seems like it would be a little harder than my standard manifold (just cause I've made enough of the standard that it's getting a little easier) and flow worse, in my opinion. So for me to make it doesn't make much sense. It'll be cool to see it done though.


I think it'll make more power than begi/fm, but I'd like to see how much. Lets say a ramhorn makes 40-50 more hp in a 300hp setup over a standard log like the taco taco (from h-t thread). A begi directed pulse log already flows better than a taco taco, so then where does the tubular shorty fall in?
I think this would flow better than my tubular BEGI replacement, which already made more power and spooled sooner on my car than a BEGI S3 on a closely similar spec'ed car (jondoe's).

wayne_curr 01-18-2010 03:19 PM

1 Attachment(s)
If you guys want that manifold its going to cost more than I quoted you. I thought you guys wanted the one like mine:
Attachment 201150

levnubhin 01-18-2010 03:35 PM

No, I'm interested in this one............

http://img.photobucket.com/albums/v6...maniblend2.jpg
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wayne_curr 01-18-2010 03:37 PM

PM'd you.

SKMetalworks 01-18-2010 04:38 PM

3 Attachment(s)
Its definitely more difficult than Tims design i can tell you that much.

Attachment 201147

Attachment 201148

Attachment 201149


The hardest part will be making the #2 and #3 merge with #1 and #4.

johnmatt 01-18-2010 04:41 PM

Is that the one he's making now? Not off to a bad start

wayne_curr 01-18-2010 04:46 PM

I still think it'll be easier merging 2 and 3 than coping 2 and 3 into 1 and 4 like I did on mine.

SKMetalworks 01-18-2010 06:17 PM


Originally Posted by wayne_curr (Post 509865)
I still think it'll be easier merging 2 and 3 than coping 2 and 3 into 1 and 4 like I did on mine.

I dont think so, marking and cutting a hole from a straight piece is alot easier than coping the whole 90 * bend with 2 different radii and a straight section in there.

ARTech 01-18-2010 11:50 PM


Originally Posted by TurboTim (Post 509765)
I think this would flow better than my tubular BEGI replacement, which already made more power and spooled sooner on my car than a BEGI S3 on a closely similar spec'ed car (jondoe's).

I think we've talked about this before...same size DP or bigger?

TurboTim 01-19-2010 08:03 AM


Originally Posted by ARTech (Post 510017)
I think we've talked about this before...same size DP or bigger?

I ran my 3" bellmouth DP with my ol' 3" exhaust/metal core cat. He ran BEGI's stainless SGDP which went up to 3" at some point, metal core cat, and enthuza's 3" exhaust. Trying to argue the bellmouth DP is better than a SGDP is difficult but I think it could have added to the difference, not just all the manifold.

ARTech 01-19-2010 10:14 AM

I don't think it was the Bellmouth vs SGDP that made a difference as much as it was the 3" vs 2.5" size difference. AFAIK begi doesn't make a 3" DP, they just flare it to 3" at the end to meet a 3" cat/exhaust.

TurboTim 01-19-2010 10:32 AM

I think it's 2.75 after the dump tube blends in, then goes to 3" right at the end. I don't know for sure.

Whatever.

ARTech 01-19-2010 11:36 AM

From their website:

BEGi can make a downpipe that has a 3.0" outlet to the exhaust system on it. However, it will not bolt up to the stock exhaust or any stock exhaust replacement. The downpipe will outlet the turbo at 2.25" and swage up to 2.5" prior to the wastegate vent tube dump. Then the downpipe will swage to 2.75" at the flex joint and swage up to 3.0" after the flex joint. This is a customizing option and is considered a custom order. 3.0" Downpipes cannot be returned for refund or exchange. All measurements are in OD.


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