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-   -   Konmo's 1990 Turbo VVT Swap (https://www.miataturbo.net/build-threads-57/konmos-1990-turbo-vvt-swap-92987/)

konmo 05-18-2017 02:52 PM


Originally Posted by shuiend (Post 1415532)
Yes, the turbo housing not being ported is why you get creep and hit boost with the waste gate wired open.

I would probably max out the turbo you have now, then upgrade later. I mostly say this to save you $200 right now.

Ah I thought so, well since I'll be pulling my engine back out, I'll try to port the turbo then.

You're right, that's what I'll be doing first. The current turbo has maybe 300 miles on it, if that. So it should have plenty of life left in it if I don't push it too hard. Reading Sonofthehill's thread, I can see that these little turbos can take a beating though. I'm not too far from him either, maybe I can get some tips on the porting that he did on his.

sonofthehill 05-18-2017 09:19 PM

I am happy to share my porting experiences with you.

konmo 06-09-2017 07:20 PM

I bought a few more shiny bits for my build. These will add more bling to my car :cool:
On the table I have:
  • KG Works rear view mirror
  • KG Works eyeball vents
  • RevLimiter Air vent rings
  • RevLimiter Window switches
  • Brainstorm Performance Fuel lid
  • Garage5 Needle Caps
https://c1.staticflickr.com/5/4227/3...2a901dfd_b.jpg

konmo 06-09-2017 07:46 PM

I decided to paint the block black before putting it all together. First I sprayed a few coats of Rust-Oleum engine primer and I let it dry overnight. The next day I finished it off with another few coats of Dupli-Color semi-gloss black engine enamel. I think it turned out pretty good.

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konmo 06-09-2017 07:49 PM

It had been a while since I had actually driven the car so I decided to take it out for a drive even though it's smoking out the exhaust.
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konmo 06-09-2017 07:52 PM

Not too long ago I purchased a 3.63 R&P to put into my spare torsen LSD. This probably won't be going in until later this year or early next year. We shall see.

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konmo 06-09-2017 08:00 PM

I also bought a pair of discontinued PIAA 960 lamps to retrofit into my RS Active type 2 headlights. This should be a fun project.

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aidandj 06-09-2017 08:23 PM


Originally Posted by konmo (Post 1420896)

Did you paint the oil filter sealing surface and around the stud?

konmo 06-10-2017 02:58 AM


Originally Posted by aidandj (Post 1420911)
Did you paint the oil filter sealing surface and around the stud?

yeah I got some paint on the oil filter sealing surface and around the stud. I was planning on just removing the paint on the sealing area, but didn't think about the paint around the stud. I did tape off the small port in there so it not entirely covered in paint. You think it'll come off with the oil once it's ran?

konmo 06-12-2017 01:47 PM

I've been reading a lot about leaking Supertech valve stem seals and I had just recently got my head built and I used new Supertech seals for it. I didn't want to risk getting leaky seals so I purchased some 949 Racing valve stem seals and worked on replacing them while the head was still off the block.

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removed the cam caps, cams, and MMD bucket lifters.

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I then removed the supertech springs and valves to get to the valve stem seals.
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Top seals are the Supertech and bottom are the 949 Racing seals

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All Done. Hopefully the 949 Racing seals won't leak.

https://c1.staticflickr.com/5/4264/3...54937346_b.jpg

M.Adamovits 06-12-2017 02:00 PM


Originally Posted by konmo (Post 1420960)
yeah I got some paint on the oil filter sealing surface and around the stud. I was planning on just removing the paint on the sealing area, but didn't think about the paint around the stud. I did tape off the small port in there so it not entirely covered in paint. You think it'll come off with the oil once it's ran?


I would not want any paint in that area. Best bet is to remove any paint on the seal surface and inside surrounding the port.

konmo 06-12-2017 02:11 PM


Originally Posted by M.Adamovits (Post 1421309)
I would not want any paint in that area. Best bet is to remove any paint on the seal surface and inside surrounding the port.

I'll make sure to do that before I fully assemble the engine. What would you recommend that I use to remove paint?

konmo 06-12-2017 02:21 PM

Next I started working on putting the head on the block. I purchased ARP head studs to use on the engine. I chased the threads on the block using an old head bolt even though they looked clean. Then screwed in the head studs hand tight and used the supplied ARP lube to torque them down to 65 ft-lbs in three steps. I also ditched the supplied ARP washers and used the stock washers instead since they have a slightly bigger outer diameter.

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konmo 06-12-2017 02:29 PM

I was not planning on getting a better turbo until I wore out or broke the MK turbo kit I bought, but I ended up getting a Borg Warner EFR 6758 Aluminum Supercore from @psyber_0ptix so this means I'll be soon running a EFR setup. I already purchased a turbo manifold and downpipe for it as well as the exhaust turbine housing.

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konmo 06-12-2017 02:37 PM

I removed the water nipple at the back of the head since I was no longer going to be using the stock oil warmer and I also wasn't going to use the stock throttle body. No coolant lines are needed on that side for my setup. I purchased a 1/2" NPT tap that already came with the 23/32" drill bit that is needed from amazon and also purchased a brass plug. (Thanks to @aidandj, got the info off one of his threads)

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konmo 06-12-2017 02:46 PM

Next was installing the coolant reroute. I purchased a Begi reroute spacer and the Kia water next. I am using a Stant superstat 180* thermostat with this.

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I purchased a front water neck block off plug/plate from TrackSpeed Engineering to clean up the front of the engine.

https://c1.staticflickr.com/5/4267/3...5f8d2497_b.jpg

shuiend 06-12-2017 02:51 PM

I am pretty sure that 100% of my customers who have decided to build a motor and upgrade their turbo setup's have ended up with TSE. I have zero issues with that and I think it is the perfect upgrade path. I would love to see you max out my setup though.

konmo 06-12-2017 02:58 PM


Originally Posted by shuiend (Post 1421346)
I am pretty sure that 100% of my customers who have decided to build a motor and upgrade their turbo setup's have ended up with TSE. I have zero issues with that and I think it is the perfect upgrade path. I would love to see you max out my setup though.

Lars, I got you, no worries! I am not going to run the EFR setup until I have the engine on a good tune, I also have not figured out what I am going to do about the exhaust. I'll probably have someone fit your mkturbo exhaust with the TSE downpipe if that can be done easily. Until then I will be running the MK turbo kit and most likely will be hitting the dyno with it as well.

shuiend 06-12-2017 03:07 PM


Originally Posted by konmo (Post 1421350)
Lars, I got you, no worries! I am not going to run the EFR setup until I have the engine on a good tune, I also have not figured out what I am going to do about the exhaust. I'll probably have someone fit your mkturbo exhaust with the TSE downpipe if that can be done easily. Until then I will be running the MK turbo kit and most likely will be hitting the dyno with it as well.

Exhaust should fit up reasonably easy. I would cut off the standard flange off the bottom of the TSE down pipe and add a v-band flange there. Then chop off the end of the mid-pipe and mate it up with the new down pipe.

konmo 06-13-2017 01:38 PM

The TSE manifold and downpipe arrived yesterday. Still waiting on the exhaust turbine housing and a few more bits to arrive.

https://c1.staticflickr.com/5/4277/3...778b3c5e_b.jpg


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