JoaoCaldeira
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| posted on 14/7/07 at 10:31 PM |
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Air scoop disturbing air
Hi.
I'm having a bit of a problem with heat, and I'm trying to improve the situation.
For now I have fully tunneled the nosecone to rad, so all air in the engine bay is hot.
I'm having oil temperature issues, but I admit that engine intake is using hot air after the rad (no vent whatsoever).
I'm using a pipercross sponge filter.
What are the cons / pros of using the MNR air scoop?
a) will it lower engine bay's temperature?
b) will it raise pressure after the rad, though making it less efficient?
c) should I just add side vents in order to let the heat escape?
d) will it disturb the air leading to problems in air admission?
Thanks,
Joao
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RazMan
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| posted on 14/7/07 at 10:39 PM |
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IMO you should duct the air filter intake to cold air, probably below the rad. Installing a couple of vents further back will probably improve airflow
and let the heat out more efficiently.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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marc n
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| posted on 14/7/07 at 10:41 PM |
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hi Joao
if i remember correctly you are using the bike rad ???
i would swap for an ally four core proper rad, mark in cyprus had problems with a polo rad not keeping his car cool enough changed to a four core and
problem solved, the oil temp is a by product of the water temp, i have also fitted naca ducts in reverse on my car as i have a fully panelled in
floor and temps where really high but these cured it
best regards
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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Chippy
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| posted on 14/7/07 at 10:43 PM |
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Having suffered similar problems I fitted a pair of Metro bonnet vents, plus a louvered vent each side of the engine bay. Worked a treat. HTH Ray
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JoaoCaldeira
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| posted on 15/7/07 at 06:55 AM |
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quote:
Originally posted by marc n
hi Joao
if i remember correctly you are using the bike rad ???
i would swap for an ally four core proper rad, mark in cyprus had problems with a polo rad not keeping his car cool enough changed to a four core and
problem solved, the oil temp is a by product of the water temp, i have also fitted naca ducts in reverse on my car as i have a fully panelled in
floor and temps where really high but these cured it
best regards
marc
Yeap.... I'm still usign the bike rad.
Water temp sits on the 85 - 90ºc on track (25 - 30º ambient temperature), so I thought it was more of engine bay temperature.
Where did you install the NACA ducts? Any disturb on air flow through rad or into intake?
Thanks,
Joao
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JoaoCaldeira
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| posted on 15/7/07 at 07:20 AM |
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quote:
Originally posted by RazMan
IMO you should duct the air filter intake to cold air, probably below the rad. Installing a couple of vents further back will probably improve airflow
and let the heat out more efficiently.
I have a bit of a clearence problem: the pipercroos sponge filter (30 or 40 mm (?) high) already touches the bonnet, so I thought that
a) an airbox would not fit
b) with a scoop (providing clearance, not air) I could use NF Auto air filter canister, but would it be up to the job (providing enought air)?
Joao
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JoaoCaldeira
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| posted on 15/7/07 at 07:33 AM |
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NF Auto air filter canister
 
Rescued attachment carbfil.jpg
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RazMan
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| posted on 15/7/07 at 07:49 AM |
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That's perfect for the job Joao. You can mount the filter anywhere as long as you can run ducts to the engine intake & fresh air.
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
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Danozeman
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| posted on 15/7/07 at 10:47 AM |
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If its engine bay temp you would probably need some vents near the back of the bay to get the air out. Some nice loubres in the side of the bonnet or
something as chippy says.
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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higgsti
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| posted on 15/7/07 at 10:51 AM |
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you could always cut and flare the tub as mine has been done which also allows easier access to sides of engine .the sides are cut at the footwell and
flared about 25mm
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higgsti
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| posted on 15/7/07 at 10:55 AM |
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like thisImage deleted by owner
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higgsti
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| posted on 15/7/07 at 10:57 AM |
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thisImage deleted by owner
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JoaoCaldeira
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| posted on 15/7/07 at 06:21 PM |
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Errr.... do you have a bigger pic?
Thanks,
Joao
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amalyos
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| posted on 15/7/07 at 06:28 PM |
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Joao,
I've used one of the Air filter canister, with a home made airbox.
Works well, I had it on the rollers and didn't even need a dyno jet kit, just upped the main jet size.
Steve
 
Rescued attachment Airbox1.JPG
http://stevembuild.blogspot.com
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marc n
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| posted on 15/7/07 at 07:46 PM |
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hi joao
will post some pics of the ducts on my car we have had a load made in black grp
best regards
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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JoaoCaldeira
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| posted on 15/7/07 at 11:33 PM |
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quote:
Originally posted by amalyos
Joao,
I've used one of the Air filter canister, with a home made airbox.
Works well, I had it on the rollers and didn't even need a dyno jet kit, just upped the main jet size.
Steve
Hi.
Where are you taking the cold air from?
How do you prevent water from getting into it?
Cheers,
Joao
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amalyos
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| posted on 16/7/07 at 07:17 AM |
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I've cut a couple of vents in the bonnet.
To stop any water, I just don't go out in the rain. 
 
Rescued attachment Vents.JPG
http://stevembuild.blogspot.com
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JoaoCaldeira
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| posted on 17/7/07 at 08:15 AM |
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quote:
Originally posted by marc n
hi joao
will post some pics of the ducts on my car we have had a load made in black grp
best regards
marc
bump 
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marc n
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| posted on 17/7/07 at 09:11 AM |
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hi joao
sorry car still on top deck of truck at the moment so cant get in to take any pics, as soon as there is space in the workshop i will get my car in and
take some pics
sorry to hear about your bad news 
best regards
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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JoaoCaldeira
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| posted on 22/7/07 at 11:35 PM |
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quote:
Originally posted by marc n
hi joao
sorry car still on top deck of truck at the moment so cant get in to take any pics, as soon as there is space in the workshop i will get my car in and
take some pics
sorry to hear about your bad news
best regards
marc
Hi Marc.
Sorry to be a pain ... were you able to take a those shots?
Do you have dimensions for the MNR air scoop?
Is it more aesthetic or more functional?
Cheers,
Joao
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marc n
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| posted on 23/7/07 at 06:45 AM |
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its no worries at all we now have two car spaces back in the workshop so im unloading the two cars that are in the truck today at some point so should
have some for tomorrow for you
best regards
marc
please email rather than u2u
direct workshop email ( manned 8am till 6pm )
www.mnrltd.co.uk enquireys to :-
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marc n
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| posted on 26/7/07 at 07:32 AM |
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engine intake in nosecone
 
Rescued attachment duct5.jpg
please email rather than u2u
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marc n
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| posted on 26/7/07 at 07:33 AM |
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ducts on side of body
 
Rescued attachment duct1.jpg
please email rather than u2u
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marc n
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| posted on 26/7/07 at 07:34 AM |
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and again
 
Rescued attachment duct2.jpg
please email rather than u2u
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marc n
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| posted on 26/7/07 at 07:35 AM |
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best i could get from inside the truck
best regards
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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