K20a normal operating temp - K20A.org .:. The K Series Source . Honda / Acura K20a k24a Engine Forum
Reply
 
Thread Tools
Old 08-15-2011, 04:46 PM   #1
felixy69
K20a.org Basic User
 
Join Date: Jun 2008
Posts: 202
Default K20a normal operating temp

I was wondering what the normal operating temp is for a k20a Jdm type R motor??

Who makes after market thermalstat ?
I have ktune thermalstat housing n comes with stock thermalstat, what cAn I upgrade to n still be Able to use the ktune housing ?

Thx
__________________
all item sold as is.
pic are the exact item.
felixy69 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-15-2011, 05:01 PM   #2
RHCP0801
K20a.org Basic User
 
RHCP0801's Avatar
 
Join Date: Sep 2006
Location: New York
Posts: 172
Default Re: K20a normal operating temp

180-195 is ideal
__________________
RHCP0801 is offline   Reply With Quote Quick reply to this message
Old 08-15-2011, 05:07 PM   #3
TheKhemist
K20a.org Advanced User
 
Join Date: Jan 2010
Location: NC
Posts: 608
Default Re: K20a normal operating temp

I think Mishimoto makes a low temp Tstat as well as Spoon or Mugen
__________________
My First Build: K20 Integra
TheKhemist is offline   Reply With Quote Quick reply to this message
Old 08-15-2011, 05:21 PM   #4
iBoost
K20a.org Advanced User
 
iBoost's Avatar
 
Join Date: Mar 2009
Location: Dublin, Ohio
Posts: 997
Default Re: K20a normal operating temp

Yeah I think 180-195 is ideal.

Why are you looking into getting a low temp t-stat? Having problems?
__________________
||| AutoFair Honda ||| K-Tuned |||
D-Rob - Innovative MotorWorks Tuned
iBoost is offline   Reply With Quote Quick reply to this message
Old 08-15-2011, 06:14 PM   #5
felixy69
K20a.org Basic User
 
Join Date: Jun 2008
Posts: 202
Default Re: K20a normal operating temp

Quote:
Originally Posted by iBoost View Post
Yeah I think 180-195 is ideal.

Why are you looking into getting a low temp t-stat? Having problems?
well in my swap....i am using a half size alum EG rad....
my car is turbo....i have AC condenser infront of it ... and the electric fan is infront of the ac condenser.....the rad is 2mm away from the intake manifold.

so there's no air going in or going out of the rad which makes it hard to breath.....

my normal temp is 203-208F ....cruising on the HWY at 6th gear 80miles...i would over heat at 225F all the time....so i am sure i will be needing some ducting to force air into the rad.

i have ktune thermalstat housing....but i just found out that kit comes with STOCK thermalstat.....

does anyone know what i can upgrade with? and still fits the ktune unit ??

__________________
all item sold as is.
pic are the exact item.
felixy69 is offline   Reply With Quote Quick reply to this message
Old 08-16-2011, 05:48 AM   #6
flesh199
K20a.org Basic User
 
flesh199's Avatar
 
Join Date: Apr 2005
Location: quebec/canada
Posts: 370
Default Re: K20a normal operating temp

just put your oem thermostat kit in here.I was overheating with my k-tuned tstat kit to...
__________________
Allmotor k24/k20 built not bought
279whp 207 torque SAE CORRECTED (94 octane)
http://www.youtube.com/watch?v=mJ8jWrX0UwE
flesh199 is offline   Reply With Quote Quick reply to this message
Old 08-16-2011, 09:26 AM   #7
felixy69
K20a.org Basic User
 
Join Date: Jun 2008
Posts: 202
Default Re: K20a normal operating temp

Quote:
Originally Posted by flesh199 View Post
just put your oem thermostat kit in here.I was overheating with my k-tuned tstat kit to...
ThAn what did u switch to .... N make it not over heat
I m already running water with water wetter !!
Still sits at 206F normally
__________________
all item sold as is.
pic are the exact item.
felixy69 is offline   Reply With Quote Quick reply to this message
Old 08-16-2011, 12:31 PM   #8
kb58
K20a.org Master User
 
Join Date: Dec 2006
Location: Radiator Springs
Posts: 2,156
Default Re: K20a normal operating temp

Your thermostat is not the problem.

Stock housing:
During warm-up, hot coolant circulates from the head down through the bypass hose and terminates on the engine-side of the thermostat housing where it flows into the inlet of the water pump. Because the temperature sensing bulb of the thermostat is on the engine-side, the thermostat senses the hot coolant and opens, gating some of the coolant out toward the radiator.

K-tuned housing:
Hot coolant from the head comes down through the bypass hose and terminates on the radiator-side of the thermostat. Because the temperature sensing bulb is opposite the hot coolant, the thermostat stays closed.

Worse, because the bypass hose now terminates on the radiator side of the thermostat, there is zero coolant flow through the head during warm-up. The water pump is unable to help because the thermstat is closed - it's a Catch-22 that results in an overheated engine.

If you want to retain the K-Tuned housing, either you cannot run a thermostat, or if you do, you must drill holes round the edge of it so that hot coolant can reach the sensor bulb of the thermostat.
__________________
midlana.com:Turbo K24-powered mid-engine Super 7, and the book on how to build your own!
Kimini book: Mid-engine sports car design using a FWD drivetrain.
kb58 is offline   Reply With Quote Quick reply to this message
Old 08-16-2011, 03:06 PM   #9
k20a2DB8
K20a.org Basic User
 
k20a2DB8's Avatar
 
Join Date: Nov 2010
Posts: 267
Default Re: K20a normal operating temp

have you try hard wire the fan to run at all the time? mine is TINY half size 1 row alumium radiator , my temps is around 182-185 mostly. sometimes go high 180s when i park for few minutes.

but again mine is not boosted and my radiator gets alot air flow from front of my bumper. definity try stock housing/thermostat or no thermostat/ktuned housing see if it helps.
__________________
2012 civc 4dr
k20 94 DB8
k20a2DB8 is offline   Reply With Quote Quick reply to this message
Old 08-16-2011, 06:54 PM   #10
MKulak
K20a.org Basic User
 
Join Date: Nov 2008
Location: PoCo, BC
Posts: 180
Default Re: K20a normal operating temp

My experience tuning shows that max power is when I start my pull at 186f.
185-195 is what you want to see normally...

Drill a few 1/8" holes in your K-Tuned T-stat and see if that helps.
__________________
Thanks, Marc
2004 Acura TSX - 6 Speed - RIP - Theives!
Need Kpro/Flashpro Tuning in the Toronto area. *** Now in VANCOUVER, BC *** PM me
MKulak is offline   Reply With Quote Quick reply to this message
Old 08-16-2011, 07:12 PM   #11
EM1_K20A
New Member
 
EM1_K20A's Avatar
 
Join Date: Mar 2011
Location: 13207
Posts: 69
Default Re: K20a normal operating temp

Sorry to jack thread op.
I was at K-tuned today to bleed coolant out. We got all the air out, but my temp gauge on the cluster is at 3/4 the way up to "H". They put a gun on the hoses, its reading 200. Fan kicks in and all, did anyone have this problem??

Everything is new. K-Tuned hoses, new t-stat, new fan switch, new temp sensor, and no kpro
EM1_K20A is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 10:24 AM   #12
kb58
K20a.org Master User
 
Join Date: Dec 2006
Location: Radiator Springs
Posts: 2,156
Default Re: K20a normal operating temp

I'm telling you guys, it's due to the coolant return hose from the head being moved from one side of the thermostat to the other that is causing this. I went round and round on this until I figured it out on my own...
__________________
midlana.com:Turbo K24-powered mid-engine Super 7, and the book on how to build your own!
Kimini book: Mid-engine sports car design using a FWD drivetrain.
kb58 is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 10:33 AM   #13
EM1_K20A
New Member
 
EM1_K20A's Avatar
 
Join Date: Mar 2011
Location: 13207
Posts: 69
Default Re: K20a normal operating temp

Quote:
Originally Posted by kb58 View Post
I'm telling you guys, it's due to the coolant return hose from the head being moved from one side of the thermostat to the other that is causing this. I went round and round on this until I figured it out on my own...
Please explain....the small coolant hose that runs under the IM to the t-stat housing??

Thanks
EM1_K20A is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 10:48 AM   #14
CAFROG
K20a.org Master User
 
CAFROG's Avatar
 
Join Date: Oct 2010
Location: Nor-Cal
Posts: 1,898
Default Re: K20a normal operating temp

I agree......I am confused with the explanation too. The return hose ion the oppisute side in terms of a driver's side radiator or what?
__________________
My 92 Civic Si (owned it since '96) Currently making it a K20-R MuFFsTanK KiLLa

http://www.k20a.org/forum/showthread.php?t=96809
CAFROG is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 10:57 AM   #15
kb58
K20a.org Master User
 
Join Date: Dec 2006
Location: Radiator Springs
Posts: 2,156
Default Re: K20a normal operating temp

Quote:
Originally Posted by EM1_K20A View Post
Sorry to jack thread op.
I was at K-tuned today to bleed coolant out. We got all the air out, but my temp gauge on the cluster is at 3/4 the way up to "H". They put a gun on the hoses, its reading 200. Fan kicks in and all, did anyone have this problem??

Everything is new. K-Tuned hoses, new t-stat, new fan switch, new temp sensor, and no kpro
You were there, at K-Tuned? If so, ask them how hot coolant coming down from the head in the bypass hose is supposed to get to the water pump when they moved it to the other side of the thermostat, where it can't heat the sensing element and therefore keeps the thermostat closed.

You're going to have to beat on them to understand that coolant flows into the eye of the water pump, not the other way round.
__________________
midlana.com:Turbo K24-powered mid-engine Super 7, and the book on how to build your own!
Kimini book: Mid-engine sports car design using a FWD drivetrain.
kb58 is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 11:16 AM   #16
EM1_K20A
New Member
 
EM1_K20A's Avatar
 
Join Date: Mar 2011
Location: 13207
Posts: 69
Default Re: K20a normal operating temp

Quote:
Originally Posted by kb58 View Post
You were there, at K-Tuned? If so, ask them how hot coolant coming down from the head in the bypass hose is supposed to get to the water pump when they moved it to the other side of the thermostat, where it can't heat the sensing element and therefore keeps the thermostat closed.

You're going to have to beat on them to understand that coolant flows into the eye of the water pump, not the other way round.
All I did was change rad hoses, new t-stat, new switch and temp sensor. Didn't change the t-stat housing or anything. Just weird, I just did a simply thing and now its showing its over heating on the gauge but its not. Says the gun that reads the temp.
EM1_K20A is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 11:29 AM   #17
CAFROG
K20a.org Master User
 
CAFROG's Avatar
 
Join Date: Oct 2010
Location: Nor-Cal
Posts: 1,898
Default Re: K20a normal operating temp

If your temp sensor is on the block near the top rad hose (w/K-tuned adapter) it could sense a higher temp.....at least I have read about it being a problem. I have the K-tuned adapter for temp sensor and will be starting my swap soon.
__________________
My 92 Civic Si (owned it since '96) Currently making it a K20-R MuFFsTanK KiLLa

http://www.k20a.org/forum/showthread.php?t=96809
CAFROG is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 11:41 AM   #18
EM1_K20A
New Member
 
EM1_K20A's Avatar
 
Join Date: Mar 2011
Location: 13207
Posts: 69
Default Re: K20a normal operating temp

Quote:
Originally Posted by CAFROG View Post
If your temp sensor is on the block near the top rad hose (w/K-tuned adapter) it could sense a higher temp.....at least I have read about it being a problem. I have the K-tuned adapter for temp sensor and will be starting my swap soon.
That makes some sense. I had the adapter that goes on the upper rad hose. Didn't have that issue until I moved the temp sensor close to the block.

Thanks!!
EM1_K20A is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 12:26 PM   #19
felixy69
K20a.org Basic User
 
Join Date: Jun 2008
Posts: 202
Default Re: K20a normal operating temp

So what u guys are saying is the ktuned unit has a major design flaw .....? Can mike@ktune come on here to explain this ....?
__________________
all item sold as is.
pic are the exact item.
felixy69 is offline   Reply With Quote Quick reply to this message
Old 08-17-2011, 12:48 PM   #20
kb58
K20a.org Master User
 
Join Date: Dec 2006
Location: Radiator Springs
Posts: 2,156
Default Re: K20a normal operating temp

Quote:
Originally Posted by EM1_K20A View Post
Please explain....the small coolant hose that runs under the IM to the t-stat housing??

Thanks
Yes, the "return hose" I mentioned is the small diameter hose that runs from the cylinder head, under the IM, to the t-stat housing.
__________________
midlana.com:Turbo K24-powered mid-engine Super 7, and the book on how to build your own!
Kimini book: Mid-engine sports car design using a FWD drivetrain.
kb58 is offline   Reply With Quote Quick reply to this message
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the K20A.org .:. The K Series Source . Honda / Acura K20a k24a Engine Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may not post new threads
You may 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

Forum Jump



All times are GMT -8. The time now is 12:07 AM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.