stuart_g
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| posted on 17/5/08 at 05:52 PM |
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Exhaust heat on bodywork
I filled the cooling system today and got to run the engine up to temp. one thing I did notice after it had been idling for a bit is that the bodywork
got really hot in the area above the exhaust headers. I have marked on the pic below the effected area. It hasn't done any damage but got really
hot and very flexible.
Have I cut a big enough hole out of the bodywork for the headers. I was trying to have a small and neat as possible cut out. Would it help if I had
more clearance?
P.S. the silencer was fitted while running
[Edited on 17/5/08 by stuart_g]
 
Rescued attachment Exhaust heat area.JPG
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adithorp
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| posted on 17/5/08 at 06:09 PM |
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Can you put some heat mat on the inside so it only gets heated from the outside? Having lined my Fury sill with it I can say it's very
effective. The outside is only warm even after stationary running doing emmisions testing with no airflow through the sill.
adrian
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Hellfire
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| posted on 17/5/08 at 06:21 PM |
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You may notice a slight discolouration of the fibreglass around your headers when your exhaust gets extremely hot, although this is not permanent and
disappears when cool. We fitted an aluminium trim around our cut-out and have no heat mat whatsoever. No problems to date and no hint of
discolouration of the fibreglass. Yours will be fine.
Phil
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marc n
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| posted on 17/5/08 at 06:24 PM |
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hi stuart
that has to be one of the nicest shaped cut uots ive seen 
i normally leave 25 -30 mm clearance to allow for heat
it is also worth asking is the car running quite lean as this will really heat the headers up, if you want a trim like team hellfires send me a paper
template and i will draw it up and make in alloy or stainless
cheers
marc
please email rather than u2u
direct workshop email ( manned 8am till 6pm )
www.mnrltd.co.uk enquireys to :-
chrismnrltd@btinternet.com
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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stuart_g
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| posted on 17/5/08 at 08:46 PM |
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Thanks for the comments Marc
I don't think I have 25-30mm clearance so I will open the cut out up a bit if not.
Good point on the engine running lean hadn't even given that a thought. I would have thought the fuelling would have been leaned off after
fitting the pipercross filter due to more airflow. I have a power commander but no map yet.
Thanks for the offer for making a trim. I'll get a template made and send it to you
Cheers....Stu.
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worX
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| posted on 18/5/08 at 07:00 AM |
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I'd hold off on the trim for now Stu and enlarge your cutout slightly. It's a good shape so just take it out another 10mm or so.
Steve
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