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-   -   External wastegate on MSM manifold (https://www.miataturbo.net/diy-turbo-discussion-14/external-wastegate-msm-manifold-61223/)

vplukas101 10-23-2011 08:04 PM

External wastegate on MSM manifold
 
My MSM boost creeps when i am catless. Im wondering can i weld on a external wastegate on the stock manifold and turbo, weld the internal wastegate closed and not have boost creep?

Slacker2223 10-23-2011 08:25 PM

yes, but kind of pointless because you would need a new DP/ rework your current as well. and the MSM mani isn't really anything special or worth hacking up.... may as well just wait for something in the classifieds.

vplukas101 10-23-2011 08:32 PM


Originally Posted by Slacker2223 (Post 787025)
yes, but kind of pointless because you would need a new DP/ rework your current as well. and the MSM mani isn't really anything special or worth hacking up.... may as well just wait for something in the classifieds.

I would just dump it to atmosphere, and i wasn't planning on changing the turbo until a couple of years down the road so no point in a new manifold. Im just wonder would this solve my creep problem.

Doppelgänger 10-24-2011 12:01 AM

Ever thought of being conventional like most everyone else and just porting the turbine housing properly? Doing any work to the stock cast iron mani is just a waste of time.

Silentoreo34 10-24-2011 02:53 AM

I already told him i'd buy his msm manifold :)

timk 10-24-2011 05:44 AM

2 Attachment(s)

Originally Posted by Doppelgänger (Post 787128)
Ever thought of being conventional like most everyone else and just porting the turbine housing properly? Doing any work to the stock cast iron mani is just a waste of time.

+1

It will be even worse having the dump pipe go to atmo!

You need to smooth out/taper toward the wastegate hole so air is encouraged to take that path. With it stock it has to take a 90 degree bend pretty much.

I've attached a pic of my MSM turbine housing to show you how pathetic it is when stock.

Cheers

vplukas101 10-24-2011 10:36 AM

Already ported it made the wastegate hole bigger, and made a path from the inside so it wouldn't be a 90 degree turn. did not solve it. Thats why i want to do external.

vplukas101 10-24-2011 10:37 AM


Originally Posted by Silentoreo34 (Post 787155)
I already told him i'd buy his msm manifold :)

750 and its urs :jerkit::rofl: il be a jew like jake :giggle:

dustinb 10-24-2011 10:45 AM

I'd just put your cat back in until you can afford a good turbo setup.

Silentoreo34 10-25-2011 01:18 AM


750 and its urs il be a jew like jake
You mean like 200 bucks.

vplukas101 10-25-2011 10:48 PM


Originally Posted by Silentoreo34 (Post 787539)
You mean like 200 bucks.



Il give you a best friend discount

749.50 :rofl:

Faeflora 10-25-2011 11:22 PM

Why god, why???? Why the fuck would you want to do this.



Originally Posted by saboteur (Post 787162)
+1

It will be even worse having the dump pipe go to atmo!

Cheers

Serious? Please explain why dumping your WG to atmo will cause boost creep.

vplukas101 10-28-2011 01:07 AM

Stupid fucking 240 owners keep confusing me! :hustler: oo durp durp dont do it wont hold hurp durp durp drift tax fucking idiots! :vash:

Reading on the interwebs that if done right it will hold. Heating the manifold up then Patched it back up with ye old metal caulking gun let it slowly cool down

.

TurboTim 10-28-2011 10:12 AM


Originally Posted by vplukas101 (Post 787018)
My MSM boost creeps when i am catless. Im wondering can i weld on a external wastegate on the stock manifold and turbo, weld the internal wastegate closed and not have boost creep?

WAY too many variables to say for sure. I doubt anyone has done that to an MSM manifold. Only you should try it and find out.

Braineack 10-28-2011 11:42 AM

I have a really awesome solution:

Put the cat back on.

TurboTim 10-28-2011 05:34 PM

but then his car won't be fast.

Doppelgänger 10-28-2011 06:30 PM

Why do I feel that 98% of MSM owners are "special"....

Braineack 10-28-2011 06:49 PM

(Posting from my phone.)

I thought it was a known fact?

VanMSM 10-28-2011 09:21 PM

This guy did it: http://www.mazda-speed.com/forum2/in...c,11941.0.html

I just changed my whole manifold/turbo/exhaust.


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