Bodywork, Paint, Interior, Trim, & Wiring

discussions about bodywork, paint, interiors, trim, audio, electrical components, wiring, etc.

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pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
HVAC Access
Posted by: pspeaks
Date: March 28, 2014 12:01PM

I noticed a lot of you with Vintage Air GenII Mini units under the dash have access panels on the firewall behind the carburetor. Is this a good idea or a necessity?


Paul


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1151 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

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Re: HVAC Access
Posted by: 74ls1tr6
Date: March 28, 2014 12:31PM

Hi Paul,

We all need to do it because it is the easiest way to get it in there. Going from the other side would involve a lot more cutting to install. I still need to take off the blower motor to make the unit smaller to stuff in the access hole. Once it is in there re-screw the blower motor back on. Still need to hog some of the metal off behind the passenger hood hinge for the blower motor to fit.


pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: HVAC Access
Posted by: pspeaks
Date: March 28, 2014 04:12PM

Thanks Calvin, I was trying to get an idea of size based on pictures, you wouldn't know off-hand the height and length of the opening would you?


Paul


74ls1tr6
Calvin Grannis
Elk Grove,CA
(1151 posts)

Registered:
11/10/2007 10:05AM

Main British Car:
74 TR6 / 71 MGB GT TR6/Ls1 71 MGB GT/Ls1

authors avatar
Re: HVAC Access
Posted by: 74ls1tr6
Date: March 28, 2014 08:13PM

16 1/4" wide X 7 1/2" high.

Photo of the area behind the hood hinge that needed to be modified some for blower clearance
2013-11-11 06.39.49.jpg

Photo of the open hole in the engine compartment. Its almost already outlined some where you make your cut by the seams in the metal. This hole here is 16 1/8" x 7 1/2".
2014-03-28 16.54.38.jpg

A small modification on the inside corner for more clearance + on the shelf made flat. The deflector above needed to be cut off some below the vent hole on top.
2013-11-11 06.40.23.jpg


rficalora
Rob Ficalora
Willis, TX
(2683 posts)

Registered:
10/24/2007 02:46PM

Main British Car:
'76 MGB w/CB front, Sebring rear, early metal dash Ford 302

authors avatar
Re: HVAC Access
Posted by: rficalora
Date: March 28, 2014 10:45PM

Paul, look at my project page or HIWD article to see what's involved in mounting from inside the car... Way easier to go thru the firewall.


pspeaks
Paul Speaks
Dallas, Texas
(698 posts)

Registered:
07/20/2009 06:40PM

Main British Car:
1972 MGB-GT 1979 Ford 302

authors avatar
Re: HVAC Access
Posted by: pspeaks
Date: March 29, 2014 11:56AM

Calvin, Rob, Thanks for the info and pictures, I think I have an idea what to do now. As my motor is installed and taking up a lot of room, I'm going to get it on the road for a while first. I have bought aluminum heads and a cam and when I tear the motor down to do that upgrade it'll be much easier to cut the access hole in the firewall. This being Texas, that's probably not the best of all worlds but an easier way to go.


Paul


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