Miata Turbo Forum - Boost cars, acquire cats.

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-   -   91 BRG 1.8BP MK turbo build (https://www.miataturbo.net/build-threads-57/91-brg-1-8bp-mk-turbo-build-88055/)

curly 12-14-2016 10:00 AM

If you don't loose any parts in the gear (I think that's what you mean by actuator), and take plenty of photos, taking it apart is very easy. That being said I've hardly ever seen one leak from the big o-rings. Or the little ones for that matter. But you can take the bolts out one at a time without any disassembly.

wackbards 12-14-2016 10:47 AM

Thanks for the feedback. What kind of torque value do you aim for on the four bolts with O-rings?

wackbards 12-17-2016 02:09 PM

I hand lapped all the valves last night. It's tedious but rewarding. All the seats look really good now. Next up, water checking how well they're sealing.

https://cimg0.ibsrv.net/gimg/www.mia...20c48d0671.jpg

wackbards 12-20-2016 05:02 PM

Got the head decked, and all the valves/springs/keepers installed. The plastic bag trick for installing keepers is the jam. All valves passed leak test. I'm just waiting on a couple shims to finish putting it all back together.

wackbards 12-21-2016 03:04 PM

Christmas came early! I has churbo.

https://cimg1.ibsrv.net/gimg/www.mia...20d738ec70.jpg

shuiend 12-21-2016 04:06 PM


Originally Posted by wackbards (Post 1382606)
Christmas came early! I has churbo.

https://cimg1.ibsrv.net/gimg/www.mia...20d738ec70.jpg

WootWoot!

Your manifold and mid pipe are on the way. Your down pipe and axle back are sitting on my garage floor with 4 or 5 other setups waiting to go out as soon as I get boxes in.

wackbards 12-21-2016 05:27 PM


Originally Posted by shuiend (Post 1382618)
WootWoot!

Your manifold and mid pipe are on the way. Your down pipe and axle back are sitting on my garage floor with 4 or 5 other setups waiting to go out as soon as I get boxes in.

:yippee:

Commmooonnnnn boxes....

wackbards 12-21-2016 07:42 PM

Freeze plugged the front coolant neck. I sealed it with aviation form-a-gasket. I think I'll repurpose my coolant neck block off plate here to hold the plug in place.

https://cimg5.ibsrv.net/gimg/www.mia...58d4c049de.jpg

shuiend 12-22-2016 07:50 AM


Originally Posted by wackbards (Post 1382632)
:yippee:

Commmooonnnnn boxes....

They got done yesterday. Trying to find a truck to borrow so I can go pick them up today.

wackbards 12-23-2016 04:56 PM

Manifold & MP arrived today. Kitteh approves.

https://cimg9.ibsrv.net/gimg/www.mia...25f400aa20.jpg

wackbards 12-23-2016 05:04 PM

I think Lars slipped some catnip in the box...

https://cimg0.ibsrv.net/gimg/www.mia...75eb327e62.jpg

wackbards 12-28-2016 05:24 PM

Opened up the WG today. Here's the original port. The ID is 17.6mm, and the OD of the flapper is 29mm, although the flapper lip has a slight fillet to it. Other builds have had success with increasing the ID by 5mm. Here you can see my marks for the OD of the flapper and my target WG hole centered under the flapper (the existing WG hole is offset under the flapper). I used the aluminum bung that DIY sells with their IAT kit as my template for the WG hole I wanted to make. It has an OD of 23mm and a small chamfer, which made for a pretty ideal template for my target ID of 22.6mm.
https://cimg9.ibsrv.net/gimg/www.mia...96ebb4c66d.jpg

Here's the finished product:
https://cimg6.ibsrv.net/gimg/www.mia...7ff968f6e3.jpg

Here's how the flapper covers the new hole: https://cimg7.ibsrv.net/gimg/www.mia...0cdda713a2.jpg

After taking measurements, I'm 7% undersized from my target area of 400 sq mm. I'm gonna try this out as is. If I still get creep, I'll remove more material. I'd rather be conservative about how much material there is to seal the flapper. It's a hell of a lot easier to remove metal than it is to put it back in...

wackbards 01-10-2017 01:55 PM

I managed to measure all my lifter shims before I lapped my valves in. I double checked my clearances last night, and they're all whack now. Thems was some dirty valve seats. Live and learn. Nothing like buying stuff twice.

Alberto Chipres 01-14-2017 11:56 PM

F%@K! can't believe I missed out on this deal. If sale falls thorough. I'm interested.

wackbards 01-15-2017 12:20 AM


Originally Posted by Alberto Chipres (Post 1386575)
F%@K! can't believe I missed out on this deal. If sale falls thorough. I'm interested.

...potato.

Alberto Chipres 01-15-2017 02:03 AM

Ms2
 
..

Alberto Chipres 01-15-2017 02:05 AM


Originally Posted by wackbards (Post 1386577)
...potato.

Mobile is being weird. Posted in another thread and showed up here?

shuiend 01-15-2017 07:51 AM


Originally Posted by Alberto Chipres (Post 1386575)
F%@K! can't believe I missed out on this deal. If sale falls thorough. I'm interested.

I mean you can always send me an email and get in on a sweet MKTurbo setup. It just won't be as good as a deal since the group buy is over.

Alberto Chipres 01-17-2017 07:51 PM

Ms2
 
...

wackbards 01-17-2017 08:00 PM


Originally Posted by Alberto Chipres (Post 1387001)
I saw your post about possibly selling an ms2. Can I get more info on that please?

... Still nope. But here's a picture for you.

https://cimg7.ibsrv.net/gimg/www.mia...76685c1647.jpg


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