User Tag List

+ Reply to Thread
Results 1 to 12 of 12

Thread: n a plumbing in a mk2 escort

  1. #1
    Bodger

    Join Date
    May 2016
    Location
    reading
    Age
    53
    Posts
    130
    Thanks
    0
    Thanked 4 Times in 4 Posts

    n a plumbing in a mk2 escort

    off the back of the cossie head the rear temp sender housing. Rather than blanking this off can you run this to the heater matrix then the heater matrix to the water pump.
    Read posts some people run with a heater some don't.
    Also bleeding the system. Havent got the bleed screw type housing on the thermostat. Car came with large alloy rad .
    Any particular way to bleed the system of air as engine is new.
    Cheers murf

  2. #2
    Spanner Monkey

    Join Date
    Apr 2020
    Location
    Essex
    Age
    52
    Posts
    210
    Thanks
    34
    Thanked 9 Times in 9 Posts

    Re: n a plumbing in a mk2 escort

    I wouldn’t blank it off, run it through the heater

  3. #3
    Bodger

    Join Date
    May 2016
    Location
    reading
    Age
    53
    Posts
    130
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: n a plumbing in a mk2 escort

    Quote Originally Posted by murfeey View Post
    off the back of the cossie head the rear temp sender housing. Rather than blanking this off can you run this to the heater matrix then the heater matrix to the water pump.
    Read posts some people run with a heater some don't.
    Also bleeding the system. Havent got the bleed screw type housing on the thermostat. Car came with large alloy rad .
    Any particular way to bleed the system of air as engine is new.
    Cheers murf
    Plumbed the rear hose off the head to the matrix.and then the top.pipe back to the water pump.
    As for getting any air out.filled rad up .and left cap off overnight.is it the case of running the engine now with the cap off till.hot?
    Cheers murf

  4. #4
    Spanner Monkey

    Join Date
    Apr 2020
    Location
    Essex
    Age
    52
    Posts
    210
    Thanks
    34
    Thanked 9 Times in 9 Posts

    Re: n a plumbing in a mk2 escort

    Yes
    Depends how it goes maybe pull the top hose out of the heater matrix just go get any air from there out

  5. #5
    Spanner Monkey Mkdu's Avatar

    Join Date
    Oct 2009
    Location
    Belgium
    Posts
    417
    Thanks
    14
    Thanked 54 Times in 53 Posts

    Re: n a plumbing in a mk2 escort

    I did rear hose off the head to top pipe on heater on my car.
    The problem that is the pipe goes on top of the head cover. I saw some people installing a bleed on that pipe at the higher point.

    my car is LHD, that could be different on RHD car for the heater ?
    Last edited by Mkdu; 26-02-2021 at 07:56.

  6. #6
    Racer Decade Plus User Forest_rallying's Avatar

    Join Date
    Feb 2013
    Location
    Derbyshire
    Posts
    2,438
    Thanks
    92
    Thanked 393 Times in 348 Posts

    Re: n a plumbing in a mk2 escort

    For some unknown reason the NA Cosworth engine seems to like making air in it's cooling system unlike the Pinto engine. We ran many different specification engines in the 90's and had our fair share of water trouble. We discovered they didn't like a conventional cooling system like the Pinto engine did.

    One engine builder I spoke to had a transparent top hose so he could see what was happening with the engine when it was on the dyno. It was always above 6000 RPM when the problems started to arise. To cut a long story short we settled on a swirl pot fitted between the thermostat housing and top hose with the bleed pipe going into the top of a header tank which was higher than the top of the rad. The feed from the header tank was then fed back to the radiator to a union near the bottom hose.

    As for the heater hoses, connect them up as already said. A Mk2 can be a cold place with no heater, I have tried it.

  7. #7
    Spanner Monkey

    Join Date
    Apr 2020
    Location
    Essex
    Age
    52
    Posts
    210
    Thanks
    34
    Thanked 9 Times in 9 Posts

    Re: n a plumbing in a mk2 escort

    Garry is it only NA cosworths that suffer? as there are many turbo cosworths fitted with swirl pots as it seems to be recommended by the tuners, obviously a little easier as Sierra has a header tank fitted as standard so a simple cut in the pipe and return to header

  8. #8
    Racer Decade Plus User

    Join Date
    May 2012
    Location
    Camberley, Surrey
    Posts
    3,237
    Thanks
    5
    Thanked 353 Times in 339 Posts

    Re: n a plumbing in a mk2 escort

    I admit I know nothing about Cossie engines but 'spontaneous' air generation can occur via cavitation in the water pump - as it seems to be high rpm related, this would tend to point me it that. Are the pumps similar or different between cosworth / pinto types ie. could they be swapped? Or maybe change to electric main pump? Air in a cooling system is not good, not only for cooling but also corrosion!

  9. #9
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    56
    Posts
    25,110
    Thanks
    310
    Thanked 2,476 Times in 2,250 Posts

    Re: n a plumbing in a mk2 escort

    yb pumps are supposed to be higher output, but the only turbo yb i ever built used a standard pinto pump and that copied just fine on a race track

  10. #10
    Spanner Monkey

    Join Date
    Apr 2020
    Location
    Essex
    Age
    52
    Posts
    210
    Thanks
    34
    Thanked 9 Times in 9 Posts

    Re: n a plumbing in a mk2 escort

    4x4 pump and thermostat are completely different to 2wd setup maybe they found a way of stopping the air cavitation with this configuration

  11. #11
    Racer Decade Plus User Forest_rallying's Avatar

    Join Date
    Feb 2013
    Location
    Derbyshire
    Posts
    2,438
    Thanks
    92
    Thanked 393 Times in 348 Posts

    Re: n a plumbing in a mk2 escort

    The cylinder heads in question were all 2wd ones. One theory with the heads was there could be hot spots behind the exhaust valve seats in the head causing localised boiling.

    Katana you could be correct there with water pump cavitation, at the time we were using a pressed tin Quinton Hazel water pump which looked like a paddle. We had used it prior to that on the Pinto Engine with no problems . We changed that for a genuine 909 2wd Cosworth GPA water pump which cost a fortune. This item was fitted at the same time has the MK3 Escort header tank which was mounted where the std fuse box was. The GPA water pump has a wider steel impeller instead of the std cast one. The water pump has now been fitted on my Pinto engine.

  12. #12
    Bodger

    Join Date
    May 2016
    Location
    reading
    Age
    53
    Posts
    130
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: n a plumbing in a mk2 escort

    Cheers chaps as I know I've got a brand new pinto water pump where would I source the grp a one from .
    Cheers murf

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts