Tapping Oil/Water Ports on VVT Block - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 10-18-2014, 09:51 PM   #1
Supporting Vendor
Thread Starter
iTrader: (6)
 
Join Date: Mar 2005
Location: Broken Arrow,Ok
Posts: 1,061
Total Cats: 40
Default Tapping Oil/Water Ports on VVT Block

Has anyone attempted to tap the oil/water bosses (where the NA's have tapped holes) while the block is at the machine shop?
TheBandit is offline   Reply With Quote
Old 10-19-2014, 12:00 PM   #2
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,780
Total Cats: 1,107
Default

I believe JoeP had a thread about it several years ago and for oil the decision was made that it would be next to impossible to do correctly. Searching should find the thread.
shuiend is offline   Reply With Quote
Old 10-19-2014, 04:58 PM   #3
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

Correct and correct.
Also we discussed it at least twice afterward.

But you should attempt to do it and report back, OP.
18psi is offline   Reply With Quote
Old 10-19-2014, 10:09 PM   #4
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

Quote:
Originally Posted by 18psi View Post
Correct and correct.
Also we discussed it at least twice afterward.

But you should attempt to do it and report back, OP.
To be fair, not everyone has been here for years, and it can be quite difficult to locate some threads. Hell, it took me a while to find that specific thread, and I knew what to look for, since I posted it. And when I did finally find it, the specific image I posted which illustrated the point was dead. (**** you, ImageFrame.)

So chill.


Water is easy- you're just going through a few mm of metal into an open jacket.

Oil would be next to impossible to do correctly. The casting is still there, but they passage to feed it is missing in the later blocks. You'd have to drill a very narrow passage several inches through solid iron to hit the passage which feeds the rear main bearing all the way on the other side of the block. Deviate by just a degree or two and the block is trash. I'd attempt it only if I had a CNC milling machine to make the cut with.

As I said, the original image is long gone, but I managed to find a very low-quality preview cached in Google Images. Here's the problem:





While searching for that, I also came across am image of my dog taken while she was in the process of dying:

Attached Thumbnails
Tapping Oil/Water Ports on VVT Block-galley.jpg   Tapping Oil/Water Ports on VVT Block-lexi-dying.jpg  
Joe Perez is offline   Reply With Quote
Old 10-20-2014, 02:07 AM   #5
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

just turn the boost up and vent a passage out naturally
18psi is offline   Reply With Quote
Old 10-20-2014, 12:09 PM   #6
Ich verstehe nur Bahnhof
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 3,713
Total Cats: 320
Default

Does anyone know the thread pitch on the oil port on vvt motors? I wonder if one could simply use a double banjo bolt to feed the turbo from same source.

Attached Thumbnails
Tapping Oil/Water Ports on VVT Block-small-thumb-goodridge-double-banjo-bolt.jpg  
psyber_0ptix is offline   Reply With Quote
Old 10-20-2014, 12:17 PM   #7
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,780
Total Cats: 1,107
Default

Quote:
Originally Posted by psyber_0ptix View Post
Does anyone know the thread pitch on the oil port on vvt motors? I wonder if one could simply use a double banjo bolt to feed the turbo from same source.

On VVT motors the VVT oil line uses the same port that the oil pressure sensor uses. You simply add the same type of Tee that you would use on 96-00 miatas to run the oil feed line off of.
shuiend is offline   Reply With Quote
Old 10-20-2014, 12:51 PM   #8
Supporting Vendor
Thread Starter
iTrader: (6)
 
Join Date: Mar 2005
Location: Broken Arrow,Ok
Posts: 1,061
Total Cats: 40
Default

Thanks Joe.

I did some searching on the topic, but due to the unusual nature of the question I didn't come up with anything. I'm sad to hear that only the water port would be available to be tapped, but I genuinely appreciate sharing the knowledge. I'll update the thread as it moves along especially if I do move forward tapping the water port. My '95 block has me spoiled.

**Sorry to have made you relive the passing of the pup. I often find that I like mine more than most humans these days.

BTW, it looks like I joined a few years before Mr. 18psi, so by that correlation I should have know about it. In the same respect, its not a common topic and we are all trying to better the cause.
TheBandit is offline   Reply With Quote
Old 10-20-2014, 01:06 PM   #9
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,110
Total Cats: 518
Default

Quote:
Originally Posted by Joe Perez View Post
While searching for that, I also came across am image of my dog taken while she was in the process of dying:

I cried.

Is this photo better?

curly is offline   Reply With Quote
Old 10-20-2014, 01:09 PM   #10
Ich verstehe nur Bahnhof
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 3,713
Total Cats: 320
Default

Quote:
Originally Posted by shuiend View Post
On VVT motors the VVT oil line uses the same port that the oil pressure sensor uses. You simply add the same type of Tee that you would use on 96-00 miatas to run the oil feed line off of.
I was looking for an alternative to the tiny 1/8" bspt for a feed. I was using a -6AN per efr technical document. But also this was my discrete way of asking for the thread pitch so I could drill the side of my 94 block for the vvt hardline.


Also, another option instead of tapping for coolant is just using the port on the back of the head that's normally capped of with a crush washer and bolt to the right of the outlet housing.
psyber_0ptix is offline   Reply With Quote
Old 10-20-2014, 01:14 PM   #11
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926
Default

Ironically, it's been more than a year and my sister still has the damn thing in the freezer at home. Every time they try to get around to burying it on the backyard, there's some excuse about why it's to rainy or too cold or whatever... I have a weird family.
Joe Perez is offline   Reply With Quote
Old 10-20-2014, 01:47 PM   #12
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,780
Total Cats: 1,107
Default

Quote:
Originally Posted by psyber_0ptix View Post
I was looking for an alternative to the tiny 1/8" bspt for a feed. I was using a -6AN per efr technical document. But also this was my discrete way of asking for the thread pitch so I could drill the side of my 94 block for the vvt hardline.


Also, another option instead of tapping for coolant is just using the port on the back of the head that's normally capped of with a crush washer and bolt to the right of the outlet housing.
When I get home today I will see if I can find any pictures of how I have my VVT setup done on my 94 block. If you have a 94 block, can you just not use the oil feed port on the drivers side?

Quote:
Originally Posted by Joe Perez View Post
Ironically, it's been more than a year and my sister still has the damn thing in the freezer at home. Every time they try to get around to burying it on the backyard, there's some excuse about why it's to rainy or too cold or whatever... I have a weird family.
I sort of laughed at keeping a dead dog in your freezer, then I realized my uncle keeps a dead alligator head frozen in his freezer. He has had it for several years and he uses it as a gag for when new people come over to the house. He will be out grilling and tell them to go into the freezer and grab the tin foil wrapped head and open it up and bring it to him. Many many people have screamed upon opening it.
shuiend is offline   Reply With Quote
Old 10-20-2014, 01:56 PM   #13
Ich verstehe nur Bahnhof
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 3,713
Total Cats: 320
Default

Quote:
Originally Posted by shuiend View Post
When I get home today I will see if I can find any pictures of how I have my VVT setup done on my 94 block. If you have a 94 block, can you just not use the oil feed port on the driver side

I was going to use this for the turbo lol. I want to make this motor nice and clean. I also have a bit more faith in the hard lines unless it's not drilled/tapped perfectly perpendicular.

Know the thread pitch of the banjo on the vvt oil port? The bolt itself is still in transit but I'll be dropping by the machine shop today for final parts dropoff otherwise I'd measure it myself
psyber_0ptix is offline   Reply With Quote
Old 10-20-2014, 02:16 PM   #14
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

iirc 1/8" BSPT
18psi is offline   Reply With Quote
Old 10-20-2014, 02:30 PM   #15
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Quote:
Originally Posted by Joe Perez View Post
And when I did finally find it, the specific image I posted which illustrated the point was dead. (**** you, ImageFrame.)
Joe, I've seen SO MANY of your old posts with broken ImageFrame links it hurts.

Quote:
Originally Posted by Joe Perez View Post
Water is easy- you're just going through a few mm of metal into an open jacket.
I've considered doing this, has anyone actually done this?

Quote:
Originally Posted by TheBandit View Post
I'll update the thread as it moves along especially if I do move forward tapping the water port. My '95 block has me spoiled.
That would be glorious! Please post up findings

Quote:
Originally Posted by psyber_0ptix
Know the thread pitch of the banjo on the vvt oil port? The bolt itself is still in transit but I'll be dropping by the machine shop today for final parts dropoff otherwise I'd measure it myself
Quote:
Originally Posted by 18psi View Post
iirc 1/8" BSPT
Tha BANJO is not 1/8" BSPT. The BLOCK banjo is probably 1/8" BSPT but the banjo that holds the 2 VVT oil feed lines behind the head is not. What you actually want is this magic:

Quote:
Originally Posted by JKav View Post
Insomuch as this location is the alternative that addresses any concerns (no matter how small/perceived, etc) associated with that stock oil outlet on the block, it seems pretty relevant.

BTW here's a pic of said VVT banjo tur-bolt. Stock one on top:

This is the source thread: https://www.miataturbo.net/diy-turbo...y-turbo-76423/

Last edited by EO2K; 10-20-2014 at 04:34 PM. Reason: I'm a moran
EO2K is offline   Reply With Quote
Old 10-20-2014, 03:18 PM   #16
Ich verstehe nur Bahnhof
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 3,713
Total Cats: 320
Default

Alas, no actual mention of thread pitch. M10x1.0 is just a quess
psyber_0ptix is offline   Reply With Quote
Old 10-20-2014, 03:20 PM   #17
Supporting Vendor
Thread Starter
iTrader: (6)
 
Join Date: Mar 2005
Location: Broken Arrow,Ok
Posts: 1,061
Total Cats: 40
Default

Just to alleviate confusion, I'm moving to a VVT motor from the factory motor that came in my '95 (which has the aforementioned ports).

Thanks for continued contributions.
TheBandit is offline   Reply With Quote
Old 10-20-2014, 03:21 PM   #18
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,206
Total Cats: 2,587
Default

ohh right I confused the two since they're right next to each other.

that one JKav used is glorious
18psi is offline   Reply With Quote
Old 10-20-2014, 03:28 PM   #19
Destroyer of Inconel
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: In ur driveway, abusin' ur WPA
Posts: 9,642
Total Cats: 954
Default

Quote:
Originally Posted by 18psi View Post
ohh right I confused the two since they're right next to each other.
Where the oil pressure "sender" screws in to the VVT motor is 1/8" BSPT. I can't confirm the threads in the block. 18psi may very well be correct.

Quote:
Originally Posted by 18psi View Post
that one JKav used is glorious
Agreed. I believe he had it custom machined. I would pay 20 internet monies for one of these if someone had a run of these manufactured. For serious.

Edit: ****, I'm sorry. That's JKavs BLOCK bolt. It may in fact be 1/8"BSPT. My apologies for spewing misinformation.

Last edited by EO2K; 10-20-2014 at 04:36 PM.
EO2K is offline   Reply With Quote
Old 10-20-2014, 04:48 PM   #20
Ich verstehe nur Bahnhof
iTrader: (3)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 3,713
Total Cats: 320
Default

Yea the pressure sender port is bspt but since the hardline attaches to the block, the vvt motor will have a straight thread into the oil galley.

Mystery continues.
psyber_0ptix is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:12 AM.