140bar vs 200bar radiator cap
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 3 Series
Forum Discription: This forum will deal with any issues on the BMW 3 Series (E21, E30, E36, E46, E90, E91 & E92)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=19823
Printed Date: 28-April-2024 at 01:06
Topic: 140bar vs 200bar radiator cap
Posted By: Kevin_E30_318iS
Subject: 140bar vs 200bar radiator cap
Date Posted: 15-July-2005 at 01:02
|
As I got a new radiator for my E30 318iS, I decided to also replace the radiator cap. The original one has a 140bar rating(yellow insert in cap), but the one I ordered based on the part number in the ETK has a 200bar rating(black insert in cap).
Which is the correct one to use for the 318iS? I know that my old 316i had the 140bar rating one. Thanks, Kevin. |
Replies:
Posted By: b318isp
Date Posted: 15-July-2005 at 08:19
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I would have thought 140 bar. ------------- 
http://www.esatclear.ie/~bpurcell/index.html - My E30 318is Site |
Posted By: Kevin_E30_318iS
Date Posted: 15-July-2005 at 16:53
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Thanks Brendan,
I would have thought it to be the safer one. I need to double check the part number on the car in case there was a mistake. ------------- Kevin_1990_318iS |
Posted By: autofix
Date Posted: 15-July-2005 at 19:44
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Hi Lads, Something wrong here, 140 bar is about 2000psi.!! A coolant leak at that pressure would cut the front off the car  I think it is normally in the region of 12 to 14 psi. Cheers Alan |
Posted By: Kevin_E30_318iS
Date Posted: 16-July-2005 at 19:23
Ooops, must have misread the cap 
Not much of an engineer am I? ------------- Kevin_1990_318iS |
Posted By: andyt323i
Date Posted: 16-July-2005 at 20:02
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I am thinking it is either 1.4 bar or 2.0 bar, and YES 140 bar is 1960 psi so the front of the car would not take this, or your face. I have recently bought a new rad cap and GSF sorted me the right one for my car, only gave them the engine make and reg number, think it only came to 8 quid. |
Posted By: Madrab
Date Posted: 18-July-2005 at 07:36
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To avoid confusion I would order this from the Stealer. That way you can be sure that the right one is obtained. I would hazard a guess that the IS will use the 2.0 bar cap and seems to be borne out by the OEM parts list info. http://www.realoem.com/bmw/showparts.do?model=AF92&mospid=47256&btnr=17_0099&hg=17&fg=05 - http://www.realoem.com/bmw/showparts.do?model=AF92&mospi d=47256&btnr=17_0099&hg=17&fg=05 Rob
------------- 1990 E3o 325i Touring and she's definately a she! Pain in the ass sometimes but goes like a bunny :oD |
Posted By: b318isp
Date Posted: 18-July-2005 at 08:24
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Yes, 140psi is a little less than 10 Bar. -------------
http://www.esatclear.ie/~bpurcell/index.html - My E30 318is Site |
Posted By: Kevin_E30_318iS
Date Posted: 19-July-2005 at 16:04
| Got my units wrong, the cap reads '140' so this must be 140 kPa which is equal to 1.4bar. |
Posted By: Madrab
Date Posted: 21-July-2005 at 08:07
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IMO I would do a confirmation on whether it should be the 1.4 or 2.0 bar relief cap. The OEM spec, as above, is definately the 2.0 bar cap foir the IS so the one you have may have been replaced in the past, incorrectly. If you use the RealOEM site and input your chassis number at the first page, it will give you your required spec as it came from the factory. Rob ------------- 1990 E3o 325i Touring and she's definately a she! Pain in the ass sometimes but goes like a bunny :oD |