No Crust Racing Posted January 11, 2007 Share Posted January 11, 2007 After having fixed a dry solder joint in my AFM tonight(Most likely from the heat I'm about to talk about) I noted that the engine bay gets damn hot and stays hot for a long time (Series II R33 GTR). With this in mind I'm wondering if anyone has endevoured to vent the bonnet or purchase a vented bonnet with the aim of reducing engine bay temps and hopefully prolong component life. I'm not looking for huge rice vents, just options on something practical. What are peopls thoughts on this idea, do you run the risk of allowing rain/debris/dust/dirt etc into the engine bay in larger than normal amounts, is there a real temp drop as a result, what have people done if they've pursued this idea (pics would be great too). Thanks all Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/ Share on other sites More sharing options...
Ronin 09 Posted January 11, 2007 Share Posted January 11, 2007 someone get me a z-tune louvred bonnet... that would be great Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2815690 Share on other sites More sharing options...
markimak Posted January 11, 2007 Share Posted January 11, 2007 i found my GTR stayed hot according to the coolant gauge for a while. i raised the back of my bonnet when i put it back on. and it stays cooler and cools down quicker... Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2815742 Share on other sites More sharing options...
rockabilly Posted January 11, 2007 Share Posted January 11, 2007 fitted this to mine as i do a few track days, nismo stat and triple rad. superb. 70degs all the time.. bought from japsalon/uk. but you get the idea. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2815837 Share on other sites More sharing options...
Ronin 09 Posted January 11, 2007 Share Posted January 11, 2007 hey rockability - is it fibreglass? Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816038 Share on other sites More sharing options...
No Crust Racing Posted January 11, 2007 Author Share Posted January 11, 2007 Ronin: Got pics? Was it hard to do? Rockabilly: That's a bit more serious than I was thinking but thanks for the pics (looks great by the way). Trying not to attract too much attention from the local PD Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816103 Share on other sites More sharing options...
tmc_2 Posted January 11, 2007 Share Posted January 11, 2007 I had a Carbon fibre vented bonnet and that kep my temps down and also had a inlet over hte air filter. When i went to a standard bonnet i felt the car was not as responsive prob due to no air intake vent. i aslo found on hot days the temp needle ran higher. I have no issues whit dirt or water. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816241 Share on other sites More sharing options...
Dirty32 Posted January 11, 2007 Share Posted January 11, 2007 Actiondan - i think Ronin meant he wants the bonnet from the z-tune... Take a look at some pics and you will see what he means... porn bonnet. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816316 Share on other sites More sharing options...
1400r Posted January 11, 2007 Share Posted January 11, 2007 cut a hole in my sil's bonnet the other day left the frame work in still seems to keep the temps just under half way now probably only works when sitting still but it does seem to work Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816332 Share on other sites More sharing options...
No Crust Racing Posted January 11, 2007 Author Share Posted January 11, 2007 Ahh, OK yeah it is hot as =D I'm just looking for some subtle venting to get rid of heat without attracting too much attention or trying to look like a wannabe. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816369 Share on other sites More sharing options...
series2r33 Posted January 12, 2007 Share Posted January 12, 2007 I was think bout getting a vented bonnet but i was wondering about driving it in the rain, say if u stop at the traffic lights or something where the engine is gonna be hot does the rain running down through the vents directly onto the engine cause steam or anything? I also know your no ment to directly cool a hot engine incase some cracks goin from hot to cold that quickly Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816490 Share on other sites More sharing options...
1400r Posted January 12, 2007 Share Posted January 12, 2007 (edited) look up the 270R 200sx tuned by nismo have a look at what they did it would be hard to spot if yor painted the whole lot in the factory colour the hole I cut is very small and only just behind the radiator shroud and stops just before the rocker cover hmmm maybe dont have a look lol just refreshed my memory and its not how I remember it my advice cut hole in bonnet not frame no one likes a floppy bonnet fill hole with mesh paint mesh black tada function without the wank Edited January 12, 2007 by 1400r Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816516 Share on other sites More sharing options...
discopotato03 Posted January 12, 2007 Share Posted January 12, 2007 Is that the one Simon Gisgus (sp ?) did years ago to the S14 200 SX ? Cheers A . Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816575 Share on other sites More sharing options...
No Crust Racing Posted January 12, 2007 Author Share Posted January 12, 2007 I'm having trouble finding a good pic of the bonnet. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816624 Share on other sites More sharing options...
andz Posted January 12, 2007 Share Posted January 12, 2007 found some pics for u Z-tune is by far the sexiest Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816717 Share on other sites More sharing options...
No Crust Racing Posted January 12, 2007 Author Share Posted January 12, 2007 Actually that Z-Tune one is looking better and better, bit serious though. What's the consensus on dirt/rain etc? Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816740 Share on other sites More sharing options...
sewid Posted January 12, 2007 Share Posted January 12, 2007 Well what some people do is place a number of washers where the hinge bolts on effectively lifting up the rear of the bonnet letting air escape out the back. You may also need longer bolts. You could do this before a track event and then put it back to stock afterwards. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816771 Share on other sites More sharing options...
No Crust Racing Posted January 12, 2007 Author Share Posted January 12, 2007 Mmm. I think that would look a bit wierd personally, someone got some pics? Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816784 Share on other sites More sharing options...
sewid Posted January 12, 2007 Share Posted January 12, 2007 Mmm. I think that would look a bit wierd personally, someone got some pics? Yes it looks weird. Heat isnt a problem on the street when you're talking a turbocharged engine of course theyre going to get hot. It's good to keep things cool yes but the engine bay has been designed with a higher temp in mind from the factory. On the track where you're seeing a great deal higher temps is when you need to worry about it and think about getting temps down or moving air around or keeping heat inside the exhaust etc. Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816794 Share on other sites More sharing options...
Angus Smart Posted January 12, 2007 Share Posted January 12, 2007 (edited) After having fixed a dry solder joint in my AFM tonight(Most likely from the heat I'm about to talk about) I noted that the engine bay gets damn hot and stays hot for a long time (Series II R33 GTR). With this in mind I'm wondering if anyone has endevoured to vent the bonnet or purchase a vented bonnet with the aim of reducing engine bay temps and hopefully prolong component life. I'm not looking for huge rice vents, just options on something practical. What are peopls thoughts on this idea, do you run the risk of allowing rain/debris/dust/dirt etc into the engine bay in larger than normal amounts, is there a real temp drop as a result, what have people done if they've pursued this idea (pics would be great too). Thanks all hey mate, i recently got a z tune vent moulded into my 32gtr bonnet i noticed around 15+ degree drop in engine temp. and rain gets in. but i dont really notice it bieng dirty or anything. just made sure the seal around my cam covers and coils is in good form! just adding to the thread after reading the rest of it.. i have been pulled over by police on a number of occasions and nothing ever mentioned about the bonnet, or headlight.. or anything for that matter. Edited January 12, 2007 by Angus Smart Link to comment https://www.sau.com.au/forums/topic/151325-bonnet-venting/#findComment-2816925 Share on other sites More sharing options...
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