Miata cooling system thread - Page 40 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 01-06-2018, 12:05 PM   #781  
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,283
Total Cats: 78
Default

If you want to spend a bunch less without much downside and have one that more or less fits in the stock cluster you can get the VDO from egauges.
Leafy is offline   Reply With Quote
Old 01-12-2018, 11:31 PM   #782  
Junior Member
 
Join Date: Mar 2012
Posts: 82
Total Cats: 6
Default

Quote:
Originally Posted by matrussell122 View Post
Ill be ordering the below gauge Longacre Accutech SMI

https://www.racerpartswholesale.com/...iABEgJvh_D_BwE
That one is nice because the sensor is so small it can fit in the tight space around the top of a reroute spacer at the back of the head.
fmcokc is offline   Reply With Quote
Old 06-14-2018, 10:56 AM   #783  
Newb
 
Join Date: Dec 2017
Location: Tulsa, Oklahoma
Posts: 43
Total Cats: 1
Default

Quote:
Originally Posted by sixshooter View Post
I would have thought if the oil temp was 235 and the water temp was 200 the factory oil sandwich plate would make some positive contribution to oil cooling during operation. But using an external cooler is, of course optimal. I'm currently using both which is probably not necessary.

Today I added vents in the prescribed location in the hood.



Has anybody tried using these vents on an NB hood?
BGordon is offline   Reply With Quote
Old 06-14-2018, 11:19 AM   #784  
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 17,460
Total Cats: 1,975
Default

Quote:
Originally Posted by BGordon View Post
Has anybody tried using these vents on an NB hood?
Not to my knowledge. I did remove the snap-together plastic mesh grid portion in those vents and then trimmed them to open them up a little bit more for increased airflow
sixshooter is offline   Reply With Quote
Old 06-14-2018, 11:23 AM   #785  
Newb
 
Join Date: Dec 2017
Location: Tulsa, Oklahoma
Posts: 43
Total Cats: 1
Default

Hopefully they will fit cause I went ahead and ordered a pair for my 2000.

They are the best looking solution that I have seen for hood vents.
BGordon is offline   Reply With Quote
Old 06-26-2018, 09:31 AM   #786  
Newb
 
Join Date: Dec 2017
Location: Tulsa, Oklahoma
Posts: 43
Total Cats: 1
Default

Well I installed a pair of the WRX side vents on my 2000 Miata.
Here is a picture.
They seem to fit an NB as well as an NA.


This subforum is specifically titled "Race Prep" so I cannot comment on the worthiness of the vents for track use.
For the street they appear to do exactly what I am needing.
The temperature gauge has not risen above 200 deg. F. even when driving in stop and go traffic in 95 deg. Summer heat.

Last edited by BGordon; 07-12-2018 at 11:40 AM.
BGordon is offline   Reply With Quote
Old 06-26-2018, 11:26 AM   #787  
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 17,460
Total Cats: 1,975
Default

They look good. I think I like them placed further apart like you have them.
sixshooter is offline   Reply With Quote
Old 06-26-2018, 11:39 AM   #788  
Newb
 
Join Date: Dec 2017
Location: Tulsa, Oklahoma
Posts: 43
Total Cats: 1
Default

I had no choice on the distance apart because my V8 conversion utilizes the Corvette cold air intake which uses the center real estate.
It does look good in conjunction with the placement of the hood latches and the NB headlights.

Last edited by BGordon; 07-12-2018 at 11:41 AM.
BGordon is offline   Reply With Quote
Old 06-26-2018, 06:39 PM   #789  
Senior Member
 
Lokiel's Avatar
 
Join Date: Dec 2009
Location: Brisbane, AUSTRALIA
Posts: 677
Total Cats: 90
Default

+1 Symmetry is good

Underside shots please?
Lokiel is offline   Reply With Quote
Old 07-24-2018, 12:06 AM   #790  
Newb
 
Join Date: May 2016
Posts: 10
Total Cats: 0
Default

I've read through this whole thread and am still a little confused. Planning on an upgrade to the cooling system on my MSM weekend track car. Removing AC, new radiator, ducting to radiator and reroute (if required). Radiator hasn't been chosen yet, looking at the Supermiata one, but can't work out whether a reroute with the standard head gasket is still a better option than no reroute at all with these models?

Can't change the exterior of the car due to class rules, ie, no bonnet vents.
SKYHI Motorsport is offline   Reply With Quote
Old 07-24-2018, 02:35 PM   #791  
Junior Member
iTrader: (4)
 
Join Date: Apr 2011
Location: Bay Area- East Bay
Posts: 446
Total Cats: 20
Default

Quote:
Originally Posted by SKYHI Motorsport View Post
I've read through this whole thread and am still a little confused. Planning on an upgrade to the cooling system on my MSM weekend track car. Removing AC, new radiator, ducting to radiator and reroute (if required). Radiator hasn't been chosen yet, looking at the Supermiata one, but can't work out whether a reroute with the standard head gasket is still a better option than no reroute at all with these models?

Can't change the exterior of the car due to class rules, ie, no bonnet vents.
+1 on the proper reroute configuration on the MSM. I still haven't concluded what is the best route, to go as far as a reroute on the MSM. Mostly reading the MSM doesn't need it like normal miatas. But if you install the correct headgasket then you will net the benefits like normal miatas. But I don't know which Headgasket it requires, and at what power level I should plan to do so. 108k and healthy, about to be in the 260whp range as a weekend canyon carver. TSE Radiator and no AC.

Also I plan to add the Carbontrix CF Kidney Vents which are the same size as the WRX vents above.
brainzata is offline   Reply With Quote
Old 07-27-2018, 09:44 PM   #792  
Junior Member
 
Join Date: Jan 2017
Location: Republic of Texas
Posts: 409
Total Cats: 61
Default

I don't have any MSM answers, but I do have a thought or two about N/A NB2s on track in Texas summers.

After installing the Koyo Hyper-V radiator (with 3 sides of pipe foam (see my build thread)) and a 180F thermostat, I later installed a coolant re-route, and I was eager to see the difference in water temp at the back of the head, where the "crunchy" cylinder 4 lies. To my amazement, my water temp was only 2F lower back there after the re-route. So, I returned the car to the stock coolant routing. To be clear, on a 95F day, my water temp reaches 208F after 30 minutes on track with no re-route. No need to add the weight and potential leakage.

Additional information: my car makes 118WHP (yeah, I know) and has a redline of 7500RPM, and I consider the redline to be an old friend that I visit often on track. Very often. I also still have A/C.

.

Last edited by Steve Dallas; 07-27-2018 at 09:58 PM.
Steve Dallas is offline   Reply With Quote
Old 07-27-2018, 09:56 PM   #793  
Senior Member
iTrader: (1)
 
Join Date: Feb 2015
Posts: 810
Total Cats: 105
Default

Uhhhh.....where do you think that water coming out of the back of the head is coming from? It's water that's flowed over all 4 cylinders and mixed so you're not going to see a difference in the peak temps. The idea of the coolant reroute isnt to improve total cooling capacity but to more evenly cool each cyl so you don't end up with cyl 4 detonating away before the rest of them. I've seen way too many toastes cyl 4 pistons to not reroute. Mazda saw the issue as well which is why they changed the head gasket design.
Bronson M is offline   Reply With Quote
Old 07-27-2018, 10:07 PM   #794  
Junior Member
 
Join Date: Jan 2017
Location: Republic of Texas
Posts: 409
Total Cats: 61
Default

You missed the part where I said NB2?
Steve Dallas is offline   Reply With Quote
Old 07-27-2018, 10:10 PM   #795  
Senior Member
iTrader: (1)
 
Join Date: Feb 2015
Posts: 810
Total Cats: 105
Default

Gues I did, but what were you expecting by running a reroute either way? We're you going to see lower temps?
Bronson M is offline   Reply With Quote
Old 07-28-2018, 12:06 AM   #796  
Junior Member
iTrader: (8)
 
Join Date: Sep 2013
Location: Denver, CO
Posts: 313
Total Cats: 15
Default

I thought this was already decided and backed up by track testing from Emilio and Savington.

Factory NA Head=Reroute
Factory NB1 and MSM Head=Reroute
Factory NB2 VVT Head=NO Reroute with STOCK NB2 headgasket
VVT Head track/performance build=stock NB2 headgasket ok; NB1 headgasket WITH reroute better for equal distribution of coolant.
mrmonk7663 is offline   Reply With Quote
Old 07-29-2018, 07:23 PM   #797  
Newb
 
Join Date: May 2016
Posts: 10
Total Cats: 0
Default

Quote:
Originally Posted by mrmonk7663 View Post
I thought this was already decided and backed up by track testing from Emilio and Savington.

Factory NA Head=Reroute
Factory NB1 and MSM Head=Reroute
Factory NB2 VVT Head=NO Reroute with STOCK NB2 headgasket
VVT Head track/performance build=stock NB2 headgasket ok; NB1 headgasket WITH reroute better for equal distribution of coolant.
This is what I was thinking as the MSM head is non VVT, which means it uses the standard NB1 head gasket right?

Would be good for one of those guys to confirm.
SKYHI Motorsport is offline   Reply With Quote
Old 07-29-2018, 09:56 PM   #798  
Supporting Vendor
Thread Starter
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 5,648
Total Cats: 1,528
Default

Reroute regardless of head & gasket combo. If you are going to quote me, ask me first

I have posted this many times in the past but all of the conjecture and fear about the head gasket is based on speculation. No one has actually done any testing to show any problem regardless of combination. But we have tested both head gaskets on both heads and many different configurations in competition with success. It is a non-issue.

So it is clear, f your car is overheating , install a reroute regardless of what head gasket you have.

If you are already taking the head off for other reasons then go ahead and use an NB1 gasket head as it has more total flow area. Average velocity of the coolant should be made as high as possible.

Last edited by emilio700; 07-29-2018 at 10:18 PM.
emilio700 is offline   Reply With Quote
Old 07-29-2018, 10:41 PM   #799  
Newb
 
Join Date: May 2016
Posts: 10
Total Cats: 0
Default

Thanks Emilio
SKYHI Motorsport is offline   Reply With Quote
Old 08-23-2018, 08:12 AM   #800  
Elite Member
iTrader: (1)
 
DNMakinson's Avatar
 
Join Date: Jan 2013
Location: Seneca, SC
Posts: 3,062
Total Cats: 357
Default

Assuming good ducting, at what vehicle speed do you turn off radiator fans (when do the fans become useless burdens)?
DNMakinson is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Prepping my '95 for track asmasm Build Threads 82 05-26-2016 04:37 PM
1997 Miata Misty_Miata pineda92 Meet and Greet 4 09-20-2015 09:22 PM
Mystery Engine Trouble. Halp, mt.net! vehicular General Miata Chat 12 09-14-2015 03:17 PM
WTB parts for HPDE car Voltwings WTB 5 09-11-2015 08:23 AM
Drummersrs old Miata, new to me foshizzle Meet and Greet 9 09-08-2015 12:26 PM


Tags
crossflow, overheat, reroute, spec miata wisdom, supermiata

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 01:15 PM.




We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.