S-Type / S type R Supercharged V8 ( X200 ) 1999 - 2008 2001 - 2009
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Bonnet vents.

Old Feb 20, 2023 | 05:34 AM
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Default Bonnet vents.

Hello folks.
has anyone had bonnet vents cut into their S-type bonnet? Maybe something within the Jaguar family like XKR bonnet vents?
would be interested to see some finished pictures if you have.
Cheers, Mark.
 
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Old Feb 20, 2023 | 06:09 AM
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To let water in and risk problems & codes? No thanks!
 
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Old Feb 21, 2023 | 02:00 PM
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Originally Posted by jagv8
to let water in and risk problems & codes? No thanks!
🤣😂
 
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Old Feb 22, 2023 | 02:27 AM
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Originally Posted by JagV8
To let water in and risk problems & codes? No thanks!
Ah yes, the typical boomer response I was expecting.. not like anyone has ever manufactured something to divert water under a hood…. “obvious sarcasm”

I’d be interested in this as well, but I’m expecting more responses like his.
 
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Old Feb 22, 2023 | 06:20 AM
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The S Type spiritual predecessor:

Coombs Bonnet Vents (jaguarmk2.info)
 
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Old Feb 22, 2023 | 08:01 AM
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If you don't like the answer don't ask the question.
 
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Old Feb 22, 2023 | 08:06 AM
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Originally Posted by Mclovin22
Ah yes, the typical boomer response I was expecting.. not like anyone has ever manufactured something to divert water under a hood…. “obvious sarcasm”

I’d be interested in this as well, but I’m expecting more responses like his.
Expecting a "participation trophy" for that response? Inquiring minds want to know. (obvious sarcasm here too...)
 
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Old Feb 22, 2023 | 11:20 AM
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Originally Posted by JagV8
If you don't like the answer don't ask the question.
I didn’t ask the question, I simply made that statement because anytime someone asks a question about doing something other than what Jaguar did to the car from the factory it’s met with negative responses like yours. With no thoughts as to the possible benefits if done properly. The link the gentleman posted above depicts the benefits of doing so, with ensuring the water is channeled in such a fashion to where it does no harm. On a previous vehicle I owned they helped tremendously. Granted it was a hood made from carbon fiber, but it had the proper channels for water that would divert it away to a safe location. As a result the car didn’t overheat at all and it ran much better.
 

Last edited by Mclovin22; Feb 22, 2023 at 11:49 AM.
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Old Feb 22, 2023 | 11:26 AM
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Perhaps the OP could clarify the need for having a louvred bonnet on an X200.
 
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Old Feb 22, 2023 | 02:21 PM
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Originally Posted by Mclovin22
I simply made that statement because anytime someone asks a question about doing something other than what Jaguar did to the car from the factory it’s met with negative responses like yours.
That's false.

In any case, it wasn't negative - it was to caution which is something else.

Now... knowing it could cause issues and saying nothing? That would be negative.
 

Last edited by JagV8; Feb 22, 2023 at 02:24 PM.
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Old Feb 22, 2023 | 02:38 PM
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Originally Posted by JagV8
That's false.

In any case, it wasn't negative - it was to caution which is something else.

Now... knowing it could cause issues and saying nothing? That would be negative.
Certainly didn’t seem like it. Looked more dismissive of the idea but regardless of how it was meant, I think it could be done properly.

If anyone has done it properly with taking into consideration channeling for water and such is an entirely different question of course. But an interesting one none the less. I would think removing heat out of the engine bay was the main reason why the post was made in the first place but of course no one knows as of yet. Least that’d be my interest with this whole idea in my S type R.
 
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Old Feb 22, 2023 | 09:30 PM
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JagV8 it's a whole different world my friend. We have to embrace, coddle and be politically correct without offending inquiries posted on public/international discussion groups. Your real world knowledge/experience does not count as its not what posters want hear/read.

Now IMHO if one would like to spend the $$$ or has the expertise to louver a 15 plus year old S Type hood/bonnet with success, I say kudos and please share with the group! I do remember that dealing with an aluminum hood/bonnet is a very difficult thing to deal with, almost a lost art.
 
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Old Feb 23, 2023 | 03:40 AM
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Originally Posted by joycesjag
Now IMHO if one would like to spend the $$$ or has the expertise to louver a 15 plus year old S Type hood/bonnet with success, I say kudos and please share with the group! I do remember that dealing with an aluminum hood/bonnet is a very difficult thing to deal with, almost a lost art.
Sounds like a problem for Dave Kindig.
 
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Old Feb 23, 2023 | 03:40 PM
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Originally Posted by JagV8
That's false.
In any case, it wasn't negative - it was to caution which is something else.
Now... knowing it could cause issues and saying nothing? That would be negative.
I'd hardly say that's false. Anytime people do something out of the norm around here you get 1 old guy disparaging a different approach and 7 more kowtowing to jaguar's engineers. Eventually you'll get 2 or 3 open minds willing to discuss the merits and downfalls of the idea. Like with most things, hood vents have nuance. Good or bad, could be either depending on execution.

Originally Posted by joycesjag
JagV8 it's a whole different world my friend. We have to embrace, coddle and be politically correct without offending inquiries posted on public/international discussion groups. Your real world knowledge/experience does not count as its not what posters want hear/read.

Now IMHO if one would like to spend the $$$ or has the expertise to louver a 15 plus year old S Type hood/bonnet with success, I say kudos and please share with the group! I do remember that dealing with an aluminum hood/bonnet is a very difficult thing to deal with, almost a lost art.
Louvering the hood would be the exact wrong way to go about it. Well maybe not wrong but definitely the most difficult and, just speaking opinion here, ugliest.
 
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Old Feb 23, 2023 | 04:35 PM
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Is it me, or have we forgotten that we are all on the same side here?
We all ❤️ Jags😃🎉
 
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Old Feb 23, 2023 | 06:18 PM
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Originally Posted by iansane
you get 1 old guy disparaging a different approach...
Only one? We need to increase our numbers. After all, it’s been scientifically proven that change is bad.
 
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Old Feb 28, 2023 | 07:47 AM
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im getting more cool air under the hood by rocking a facelift hood on a prefacelift car. its the longer hood that allows for two slight openings by the grille
 
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Old Feb 28, 2023 | 02:55 PM
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Maybe he's got plans for some street racing? Here's an example of a BOSS Jag.

 
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Old Jul 16, 2023 | 10:14 PM
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That brown XJ6 - that's the boys from Hot Rod Magazine as seen on their youtube channel "Road Kill".
Funny, I seem to remember them having cooling issues and could've used some louvers, haha.
 

Last edited by David Lagonda; Jul 16, 2023 at 10:47 PM.
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Old Jul 18, 2023 | 04:17 PM
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It's not such a ridiculous idea to add bonnet vents. I believe they were considered originally for the S-Type R. The under bonnet area is designed as a wet environment for obvious reasons so bonnet vents such as those used on the X100 series XKR wouldn't immediately risk durability concerns, assuming some consideration was given to where they were placed. They were used on the XKs without additional issues.

They would also help reduce under bonnet temperatures which the S-Type R can suffer with resulting in plastic parts and hoses perishing more quickly than they otherwise might.

Personally I also dont think stylistically they would look bad. They work on the XKR and would hark back to louvred bonnets on original S-Type racers.
 
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