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-   -   VDI and Heater Unit removal? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/vdi-heater-unit-removal-1125995/)

Kenshin XI 05-04-18 02:51 PM

VDI and Heater Unit removal?
 
Im taking apart my FC but Im stuck on the VDI and the Heater Unit as its mentioned in the Haynes manual. I removed 7 bolts and everything attached from the VDI that I can see but it wont lift off. Its still firmly on there. I removed the bolts and connectors from the heater unit behind the dash but it wont come out. What else is there to remove which Im probably missing?https://cimg3.ibsrv.net/gimg/www.rx7...080d7e9efd.jpg
https://cimg5.ibsrv.net/gimg/www.rx7...cc71971451.jpg
https://cimg4.ibsrv.net/gimg/www.rx7...046355877a.jpg

professionalpyroman 05-04-18 03:05 PM

Have you tried to break loose the heater hoses? There should be 2 rubber heater hoses clamped to beaded fittings at the back of the unit. If they're old, they're probably crusted and baked on. If you're going to replace the hoses, just cut the rubber hoses and your heater unit should come loose.

On a separate note, where did you find that Turbo II pic on your profile? That's pretty cool.

Kenshin XI 05-05-18 12:20 PM


Originally Posted by professionalpyroman (Post 12272550)
Have you tried to break loose the heater hoses? There should be 2 rubber heater hoses clamped to beaded fittings at the back of the unit. If they're old, they're probably crusted and baked on. If you're going to replace the hoses, just cut the rubber hoses and your heater unit should come loose.

On a separate note, where did you find that Turbo II pic on your profile? That's pretty cool.

Thanks for the info. I did try pulling it a bit but I didnt wanna break anything. Im in my garage now so Ill see what I can do. Im parting out this fc.

I made it actually. Edited a pic of my TII :)

Kenshin XI 05-05-18 01:36 PM

Ok got the heater unit out. Hoses were on there good and a few screws and bolts to take out. Now onto the VDI and find why its not budging.
https://cimg3.ibsrv.net/gimg/www.rx7...c432716a65.jpg
https://cimg4.ibsrv.net/gimg/www.rx7...3f0a432d9c.jpg

professionalpyroman 05-05-18 06:50 PM

Glad you got it out. I don't know anything about the VDI stuff to help you though.

Do you have a hi-res version of that pic that I could use for the background on my computer?

DaleClark 05-07-18 10:57 AM

On the VDI, on the passenger side of the engine there should be a series of nuts and 1 bolt holding it on there. On the other side are 2 vertical 12mm bolts that hold the manifold to the metal vacuum tube rack, they should just need to be loosened so it can slide up (they fit into a slot).

The one bolt on the passenger side is kind of under the fuel rail and I almost missed it when I took the same deal apart yesterday.

Once that's all done the gasket will typically be pretty stuck, you will have to pry a bit to get it to break loose. Be careful, there is a big difference between prying against the gasket and still having a bolt holding everything down.

Dale

Hot_Dog 05-07-18 01:02 PM

Looks like the hoses are still in pretty good shape considering that they're probably the original hoses.

Kenshin XI 05-09-18 07:47 AM


Originally Posted by DaleClark (Post 12273017)
On the VDI, on the passenger side of the engine there should be a series of nuts and 1 bolt holding it on there. On the other side are 2 vertical 12mm bolts that hold the manifold to the metal vacuum tube rack, they should just need to be loosened so it can slide up (they fit into a slot).

The one bolt on the passenger side is kind of under the fuel rail and I almost missed it when I took the same deal apart yesterday.

Once that's all done the gasket will typically be pretty stuck, you will have to pry a bit to get it to break loose. Be careful, there is a big difference between prying against the gasket and still having a bolt holding everything down.

Dale

Thanks Ive already had those bolts/nuts out on both sides but its pretty stuck. Ill go over it again on the drivers side just to make sure. But hopefully Ill be successful with it today.

Kenshin XI 05-10-18 02:38 AM

https://cimg7.ibsrv.net/gimg/www.rx7...1e8bdaedaf.jpg
I got the VDI off earlier. Dale you were right about the bolt under the fuel rail. I thought you meant the one under the hose to the rail but it was just that one long bolt. I missed it because I thought the bolt head was a big piece of dirt/debris and blended in well. So its all done with. Thanks guys I appreciate the help.


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