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Thread: Big Tunnel fitting

  1. #1
    Bodger

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    Big Tunnel fitting

    Need a bit of advice please,

    Looking at fitting a big tunne to my MK2 to take a T5 gearbox for a future cosy transplant. I got a tunnel from burtons and have just offered it up and its not the best fit. My question is can you still run the heater box with the big tunnel ? looking at it tonight I think it is going to be tight, if not impossible to remove it and re-fit the heater box.

    Can anyone offer any help


    tunnel.jpg

    Attachment 83743

  2. #2
    Tyre Kicker

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    Re: Big Tunnel fitting

    I used an auto tunnel to allow me to keep the heater, however i don't know if the T5 will fit within it.

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    Spanner Monkey Mkdu's Avatar

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    Re: Big Tunnel fitting

    one mate has fit a cosworth with T5 in auto tunnel, he has to cut at some places to be able to fit.

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    Pit Crew Decade Plus User

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    Re: Big Tunnel fitting

    I've got heater matrix in mine with t5 box its tight but she's in and working perfect

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    Pit Crew Forest_rallying's Avatar

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    Re: Big Tunnel fitting

    Quote Originally Posted by xpackboy View Post
    I've got heater matrix in mine with t5 box its tight but she's in and working perfect
    You might have to slightly modify the top of your new big tunnel to allow your heater to fit correctly. You certainly don't want to be without a heater, I have experinced that with a Rally Car and it was no fun on road sections in winter.

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  9. #6
    Racer

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    Re: Big Tunnel fitting

    Fit a kit car heater

  10. #7
    Mechanic Matt75's Avatar

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    Re: Big Tunnel fitting

    Or fit an electric heater. I run a grp 4 tunnel and went that way




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  12. #8
    Bodger

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    Re: Big Tunnel fitting

    I have fabricated my own big tunnel in my mk1 to allow fitment of T5 cosy g/box, I have kept the original heater but just had to remove the plastic deflector off the bottom of the heater and it is stil possible to remove the heater unit, so yes it can be done!!

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  14. #9
    Bodger

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    Re: Big Tunnel fitting

    Many thanks for the replies
    Still work in progress!

    Having spent 4 hrs looking through posts on here I decided to buy the Rally Weld tunnel which happens to be cheaper than the crappy one from Burton Power !

    It has arrived and although I have not fitted it yet it looks much better shaped and holds it size very well. The burton one is just so flimsy and I think has spread like 4 inches wider.
    Will post a up-date when I manage to get into the workshop.

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    Spanner Monkey

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    Re: Big Tunnel fitting

    An better pics of your dash install

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    Spanner Monkey paulmex's Avatar

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    Re: Big Tunnel fitting

    Im also using a T5 and wanted the biggest tunnel I could find so went for one with the radiused edges. But the heater wouldn't fit !!! I thought about the electric rally ones but I had a standard heater kicking about so thought I'd have a go at altering in ?
    I only wanted heat for the screen to demist and I bit of cold air in summer would be a bonus so I cut the bottom off the heater box and it works a treat ,



    Last edited by paulmex; 24-04-2019 at 22:38.

  17. #12
    Bodger

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    Re: Big Tunnel fitting

    Quote Originally Posted by paulmex View Post
    Im also using a T5 and wanted the biggest tunnel I could find so went for one with the radiused edges. But the heater wouldn't fit !!! I thought about the electric rally ones but I had a standard heater kicking about so thought I'd have a go at altering in ?
    I only wanted heat for the screen to demist and I bit of cold air in summer would be a bonus so I cut the bottom off the heater box and it works a treat ,
    Thanks for the photos , i have managed to get the heater back in but had to trim the bottom and move the wiper motor out of the way to slide the heater box back in.

    My car is from SA and they have a different heater box !

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