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Old 07-08-2016, 11:30 AM   #21
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Quote:
Originally Posted by emilio700 View Post
Essentially, yes. We view the Skunk2 as a "throttle body kit". A starting point.

Between myself and a few other vendors, Skunk2 has been thoroughly informed of each concern in detail going back about 4 years. They just don't care. Thus why we are working on our own TB for 2017.
Seeing this dissatisfaction and looking for other throttle body bolt patterns last night I noticed that the sr20det and rb20 throttle bodies have the same 60mm square bolt pattern as the 1.8. Did anyone ever test to see if the throttle shafts on these break?
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Old 07-12-2016, 04:47 PM   #22
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I'm ready to fit the TB guys but I gotta be honest I'm a little confused by the 2 parts pictured at the front. The elliptical part I guess forms the tps housing and the rotor bit has slipped over the 'blade' for the tps but what is the odd shaped gasket for? Confused :/

does 64mm throttle body needs intake manifold inlet to be bored to same size?-20160712_203526_zpsewr8cdxh.jpg

does 64mm throttle body needs intake manifold inlet to be bored to same size?-20160712_203504_zpsog4ecq7i.jpg


does 64mm throttle body needs intake manifold inlet to be bored to same size?-20160711_204518_zpsxberunqn.jpg
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Old 07-12-2016, 05:16 PM   #23
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Is there a gasket on top and on the bottom of that idle valve adapter plate thing? Mine was for an NB so the idle valve adapter is set up a bit differently so I'm probably no help, sorry. I know the NB one goes together like a puzzle designed by the Mad Hatter with no instructions.
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Old 07-12-2016, 05:36 PM   #24
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Originally Posted by EO2K View Post
Is there a gasket on top and on the bottom of that idle valve adapter plate thing? Mine was for an NB so the idle valve adapter is set up a bit differently so I'm probably no help, sorry. I know the NB one goes together like a puzzle designed by the Mad Hatter with no instructions.
You're right: I'm dumb

Haha

Thanks buddy. I'll put it down to a long day
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Old 07-12-2016, 05:50 PM   #25
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does 64mm throttle body needs intake manifold inlet to be bored to same size?-20160712_212833_zpsoxod2tpx.jpg

does 64mm throttle body needs intake manifold inlet to be bored to same size?-20160712_214343_zpskz5whicj.jpg

The inlet swap has really been awful but I'm no mechanic. Now I can see light at the end of the tunnel what gains do you think I'll see if any?
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Old 07-12-2016, 05:54 PM   #26
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I'm sure someone has done before and after but I can't find it at the moment. For us, TB is more about reliability than any serious gains. A $325 throttle body is cheap insurance to protect a $2000+ built motor. These engines tend to make more power when they are not trying to compress fragments of the throttle shaft or the butterfly screws
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Old 07-12-2016, 05:57 PM   #27
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Quote:
Originally Posted by EO2K View Post
I'm sure someone has done before and after but I can't find it at the moment. For us, TB is more about reliability than any serious gains. The engine tends to make more power when its not trying to compress fragments of the throttle shaft of the butterfly screws
Yerp I can agree with that. If I see a couple of hp at the top I'll be happy. It's green and shiny. What more can you ask for ??
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Old 07-12-2016, 06:03 PM   #28
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Ok, now go make a intro thread: Meet and Greet - Miata Turbo Forum -Boost cars, acquire cats.

Tell us about your car, your self, your mechanical abilities, your cat, your goals, etc. We tend to respond well to visual stimulus so post lots of pics.

...and follow it up with a build thread: Build Threads - Miata Turbo Forum -Boost cars, acquire cats.

Again with the pics, everyone loves pics.
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Old 07-12-2016, 06:05 PM   #29
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Quote:
Originally Posted by EO2K View Post
Ok, now go make a intro thread: Meet and Greet - Miata Turbo Forum -Boost cars, acquire cats.

Tell us about your car, your self, your mechanical abilities, your cat, your goals, etc. We tend to respond well to visual stimulus so post lots of pics.

...and follow it up with a build thread: Build Threads - Miata Turbo Forum -Boost cars, acquire cats.

Again with the pics, everyone loves pics.
Yes mate sorry. I'll probably need an hour in front of a desktop so probably tomorrow at work. I'll try to keep it concise (ish) with lots of pics

Andy
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Old 07-12-2016, 10:02 PM   #30
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Quote:
Originally Posted by EO2K View Post
. A $325 throttle body is cheap insurance to protect a $2000+ built motor.
you are making me paranoid
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Old 07-13-2016, 09:36 AM   #31
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Originally Posted by psyber_0ptix View Post
you are making me paranoid
I just came across this recent oopsie on my UK forum on a 300whp 1.6

does 64mm throttle body needs intake manifold inlet to be bored to same size?-fefeeffefeef_zpsp9rlcns8.jpg
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Old 07-13-2016, 11:11 AM   #32
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Ugh, you guys. I don't want to pull my manifold yet lol.
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Old 07-13-2016, 11:45 AM   #33
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Originally Posted by psyber_0ptix View Post
Ugh, you guys. I don't want to pull my manifold yet lol.
FWIW he has blobbed some epoxy over the screw heads so if they do fail there is less chance of them being munched.

Seems like a sensible compromise!

does 64mm throttle body needs intake manifold inlet to be bored to same size?-27412053195_d22502b361_b_zpsof8mp37k.jpg
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Old 07-13-2016, 12:54 PM   #34
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better off pulling the throttle body and hitting the back side of the threads with a chisel
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Old 07-13-2016, 01:07 PM   #35
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The epoxy is kind of a band-aid. When I worked with a certain race team that fielded 4 Miatas in a certain endurance race, 3 of the engines had Skunk2 TBs and one had an epoxied stocker. I'll let you guess which car went out on a mechanical and what the root cause of that mechanical might have been.

Hell, if you want more evidence, you need look no further than here: Melted turbine wheel? and the title of his new build thread is... Ian's 99 post-TB screw re-rebuild.
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Old 07-13-2016, 01:32 PM   #36
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Quote:
Originally Posted by psyber_0ptix View Post
Ugh, you guys. I don't want to pull my manifold yet lol.
Lets pull it off, and I will port match yours as I did mine, I can also get you a TB from the same place I got mine so we can protect that motor!
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Old 07-13-2016, 01:49 PM   #37
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I'm also a not so proud member of the throttle body ingestion club. Its typically not the screw backing out that is initial problem, its the throttle shaft cracking at the screw hole. Then the screw comes free. Mine was expoy'd to the shaft and still made it into the intake manifold and #3 cylinder. I was lucky that it was a through-and-through and no major damage was done. If you don't want to pull your intake manifold, just install the Skunk2 TB without porting.
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Old 07-13-2016, 03:05 PM   #38
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Quote:
Originally Posted by psyber_0ptix View Post
Ugh, you guys. I don't want to pull my manifold yet lol.
Don't you have a squaretop on that BP6D? All you have to do is pull the top half of the manifold. Quit yer bitchin' it'll take you like 15min

Besides, you don't actually have to port it at all. Some of us just have that level of OCD.
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Old 07-13-2016, 03:07 PM   #39
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But gasket?
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Old 07-13-2016, 03:09 PM   #40
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So order a gasket. http://miataroadster.com/mazda/mazda.../i-464139.aspx

Quote:
Originally Posted by EO2K View Post
Upper to lower square top gasket: BP6Z-13-135

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